[extirpé de] Supravox Heritage (2024)

RM8Kinosh*ta

* Quae sunt narshornis, narshorni *

Messages : 513
Sujets : 4
Inscription : 16/07/2019
enregistré

24/08/2024-22:24:35

Bonsoir italia,

Un correcteur d'impédance RC branché aux bornes du HP, avec un ampli correct, n'a normalement aucune influence sur la courbe de réponse de ce dernier.

Pour modifier la courbe de réponse il faut utiliser un correcteur RLC "parallèle" (ou les 3 composants sont en parallèle, le tout mis en série avec le HP)

crdt.

TOUT · HOMME · CRÉE · SANS · LE · SAVOIR · COMME · IL · RESPIRE · MAIS · L'ARTISTE · SE · SENT · CRÉER · SON · ACTE · ENGAGE · TOUT · SON · ÊTRE · SA · PEINE · BIEN-AIMÉE · LE · FORTIFIE

Paul Valéry

Trouver

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boris

Senior Member

Messages : 572
Sujets : 8
Inscription : 01/12/2021
enregistré

24/08/2024-23:51:47

(24/08/2024-22:24:35)RM8Kinosh*ta a écrit : Bonsoir italia,

Un correcteur d'impédance RC branché aux bornes du HP, avec un ampli correct, n'a normalement aucune influence sur la courbe de réponse de ce dernier.

Pour modifier la courbe de réponse il faut utiliser un correcteur RLC "parallèle" (ou les 3 composants sont en parallèle, le tout mis en série avec le HP)

crdt.

ben si, dans tout les cas tu modifies la courbe SPL du HP unique.

fais la simu avec ce texte.

Cdt.

Trouver

Répondre

RM8Kinosh*ta

* Quae sunt narshornis, narshorni *

Messages : 513
Sujets : 4
Inscription : 16/07/2019
enregistré

25/08/2024-11:08:39 (Modification du message : 25/08/2024-11:38:12 par RM8Kinosh*ta.)

(24/08/2024-23:51:47)boris a écrit : ben si, dans tout les cas tu modifies la courbe SPL du HP unique.

fais la simu avec ce texte.

Code :

* Measurement data measured by REW V5.20.13
* Source: Microphone (5- USB Audio CODEC ), MICROPHONE (Volume principal), R, volume: 0,650
* Format: 512k Log Swept Sine, 1 sweep at -12,0 dBFS with no timing reference
* Dated: 24 août 2023 15:53:39
* REW Settings:
* C-weighting compensation: Off
* Target level: 75.0 dB
* Note: Axe droite prox
* Measurement: août 24
* Smoothing: 1/6 octave
* Frequency Step: 96 ppo
* Start Frequency: 0.3364563 Hz
*
* Freq(Hz) SPL(dB) Phase(degrees)
0.336456 10.044 -179.0101
0.338894 10.033 -178.9991
0.341350 10.020 -178.9844
0.343824 10.003 -178.9662
0.346315 9.983 -178.9449
0.348825 9.961 -178.9209
0.351352 9.938 -178.8946
0.353898 9.912 -178.8662
0.356463 9.885 -178.8361
0.359046 9.857 -178.8045
0.361648 9.828 -178.7714
0.364269 9.799 -178.7371
0.366908 9.768 -178.7017
0.369567 9.738 -178.6652
0.372245 9.706 -178.6277
0.374942 9.675 -178.5891
0.377659 9.643 -178.5496
0.380396 9.611 -178.5092
0.383153 9.578 -178.4677
0.385929 9.545 -178.4252
0.388726 9.512 -178.3817
0.391542 9.479 -178.3372
0.394380 9.445 -178.2917
0.397238 9.411 -178.2450
0.400116 9.377 -178.1972
0.403016 9.343 -178.1483
0.405936 9.308 -178.0982
0.408878 9.273 -178.0469
0.411840 9.238 -177.9943
0.414825 9.203 -177.9404
0.417831 9.167 -177.8852
0.420859 9.131 -177.8286
0.423908 9.095 -177.7706
0.426980 9.058 -177.7111
0.430074 9.022 -177.6501
0.433191 8.985 -177.5875
0.436330 8.947 -177.5234
0.439492 8.910 -177.4575
0.442676 8.872 -177.3900
0.445884 8.834 -177.3206
0.449115 8.796 -177.2495
0.452370 8.757 -177.1764
0.455648 8.718 -177.1014
0.458949 8.679 -177.0244
0.462275 8.640 -176.9453
0.465625 8.600 -176.8641
0.468999 8.560 -176.7806
0.472398 8.520 -176.6948
0.475821 8.479 -176.6066
0.479269 8.438 -176.5160
0.482742 8.397 -176.4229
0.486240 8.355 -176.3271
0.489763 8.314 -176.2286
0.493313 8.272 -176.1273
0.496887 8.229 -176.0231
0.500488 8.186 -175.9159
0.504115 8.143 -175.8056
0.507768 8.100 -175.6921
0.511447 8.056 -175.5753
0.515153 8.012 -175.4550
0.518886 7.968 -175.3312
0.522646 7.924 -175.2037
0.526434 7.879 -175.0724
0.530249 7.833 -174.9371
0.534091 7.788 -174.7978
0.537961 7.742 -174.6543
0.541860 7.696 -174.5064
0.545786 7.649 -174.3539
0.549741 7.602 -174.1969
0.553725 7.555 -174.0349
0.557737 7.508 -173.8679
0.561779 7.460 -173.6957
0.565850 7.411 -173.5182
0.569950 7.363 -173.3351
0.574080 7.314 -173.1462
0.578240 7.264 -172.9513
0.582430 7.215 -172.7503
0.586651 7.165 -172.5428
0.590902 7.114 -172.3288
0.595184 7.064 -172.1078
0.599497 7.013 -171.8798
0.603841 6.961 -171.6443
0.608217 6.909 -171.4013
0.612624 6.857 -171.1504
0.617064 6.805 -170.8913
0.621535 6.752 -170.6236
0.626039 6.699 -170.3472
0.630575 6.645 -170.0617
0.635145 6.592 -169.7667
0.639747 6.538 -169.4619
0.644383 6.484 -169.1468
0.649053 6.430 -168.8211
0.653756 6.375 -168.4842
0.658493 6.321 -168.1357
0.663265 6.267 -167.7751
0.668071 6.212 -167.4017
0.672913 6.158 -167.0149
0.677789 6.104 -166.6141
0.682700 6.050 -166.1986
0.687647 5.995 -165.7677
0.692630 5.941 -165.3206
0.697649 5.886 -164.8566
0.702705 5.830 -164.3750
0.707797 5.774 -163.8750
0.712926 5.718 -163.3559
0.718092 5.661 -162.8170
0.723296 5.603 -162.2574
0.728537 5.545 -161.6764
0.733816 5.486 -161.0733
0.739134 5.427 -160.4474
0.744490 5.367 -159.7978
0.749885 5.306 -159.1238
0.755319 5.245 -158.4246
0.760792 5.183 -157.6995
0.766305 5.121 -156.9478
0.771858 5.059 -156.1687
0.777451 4.996 -155.3614
0.783085 4.934 -154.5255
0.788760 4.871 -153.6601
0.794475 4.808 -152.7647
0.800232 4.746 -151.8388
0.806031 4.684 -150.8819
0.811872 4.622 -149.8936
0.817755 4.560 -148.8737
0.823681 4.499 -147.8219
0.829650 4.439 -146.7381
0.835662 4.379 -145.6225
0.841717 4.321 -144.4752
0.847817 4.264 -143.2966
0.853960 4.208 -142.0874
0.860148 4.153 -140.8483
0.866381 4.100 -139.5802
0.872659 4.048 -138.2843
0.878983 3.999 -136.9620
0.885353 3.951 -135.6150
0.891768 3.906 -134.2451
0.898230 3.863 -132.8545
0.904739 3.823 -131.4453
0.911295 3.786 -130.0201
0.917899 3.752 -128.5816
0.924550 3.721 -127.1326
0.931250 3.694 -125.6760
0.937998 3.670 -124.2149
0.944795 3.651 -122.7522
0.951642 3.636 -121.2910
0.958538 3.625 -119.8342
0.965484 3.620 -118.3848
0.972480 3.619 -116.9453
0.979527 3.624 -115.5181
0.986625 3.635 -114.1054
0.993775 3.652 -112.7092
1.000976 3.676 -111.3311
1.008229 3.705 -109.9723
1.015535 3.742 -108.6342
1.022895 3.786 -107.3177
1.030307 3.836 -106.0238
1.037773 3.894 -104.7532
1.045293 3.959 -103.5070
1.052868 4.032 -102.2858
1.060497 4.111 -101.0906
1.068182 4.198 -99.9221
1.075922 4.291 -98.7811
1.083719 4.391 -97.6682
1.091572 4.497 -96.5839
1.099482 4.609 -95.5286
1.107449 4.727 -94.5028
1.115474 4.850 -93.5065
1.123558 4.979 -92.5399
1.131699 5.112 -91.6030
1.139900 5.250 -90.6955
1.148160 5.392 -89.8173
1.156480 5.537 -88.9680
1.164861 5.686 -88.1473
1.173302 5.837 -87.3546
1.181804 5.990 -86.5893
1.190368 6.145 -85.8510
1.198994 6.302 -85.1389
1.207682 6.459 -84.4524
1.216434 6.617 -83.7908
1.225248 6.774 -83.1534
1.234127 6.931 -82.5394
1.243070 7.087 -81.9481
1.252078 7.241 -81.3787
1.261151 7.393 -80.8307
1.270290 7.542 -80.3032
1.279495 7.689 -79.7956
1.288767 7.833 -79.3073
1.298106 7.973 -78.8376
1.307512 8.110 -78.3860
1.316987 8.244 -77.9521
1.326530 8.373 -77.5352
1.336143 8.499 -77.1351
1.345825 8.622 -76.7512
1.355578 8.742 -76.3833
1.365401 8.858 -76.0310
1.375295 8.972 -75.6938
1.385261 9.084 -75.3714
1.395299 9.193 -75.0633
1.405410 9.301 -74.7689
1.415594 9.406 -74.4876
1.425852 9.510 -74.2190
1.436184 9.612 -73.9623
1.446591 9.712 -73.7169
1.457074 9.810 -73.4821
1.467633 9.907 -73.2572
1.478268 10.002 -73.0414
1.488980 10.095 -72.8341
1.499770 10.186 -72.6344
1.510638 10.275 -72.4417
1.521584 10.362 -72.2553
1.532610 10.448 -72.0744
1.543716 10.531 -71.8985
1.554903 10.612 -71.7267
1.566170 10.690 -71.5584
1.577519 10.766 -71.3932
1.588950 10.840 -71.2305
1.600465 10.911 -71.0697
1.612062 10.980 -70.9106
1.623744 11.045 -70.7528
1.635510 11.108 -70.5961
1.647362 11.169 -70.4405
1.659299 11.226 -70.2860
1.671323 11.280 -70.1327
1.683434 11.330 -69.9807
1.695633 11.378 -69.8302
1.707920 11.422 -69.6813
1.720297 11.463 -69.5341
1.732763 11.501 -69.3885
1.745319 11.535 -69.2440
1.757966 11.566 -69.1003
1.770705 11.593 -68.9568
1.783536 11.616 -68.8127
1.796461 11.637 -68.6669
1.809478 11.653 -68.5185
1.822591 11.666 -68.3662
1.835798 11.676 -68.2087
1.849101 11.681 -68.0448
1.862500 11.684 -67.8729
1.875996 11.682 -67.6915
1.889591 11.677 -67.4991
1.903283 11.669 -67.2942
1.917075 11.656 -67.0751
1.930967 11.640 -66.8404
1.944960 11.619 -66.5886
1.959054 11.595 -66.3183
1.973250 11.566 -66.0280
1.987549 11.533 -65.7166
2.001952 11.495 -65.3829
2.016459 11.452 -65.0259
2.031071 11.404 -64.6443
2.045789 11.350 -64.2371
2.060614 11.292 -63.8031
2.075546 11.228 -63.3407
2.090586 11.158 -62.8483
2.105735 11.084 -62.3240
2.120994 11.006 -61.7653
2.136364 10.923 -61.1698
2.151845 10.836 -60.5346
2.167438 10.747 -59.8565
2.183144 10.655 -59.1321
2.198964 10.562 -58.3576
2.214899 10.468 -57.5290
2.230949 10.374 -56.6421
2.247115 10.280 -55.6924
2.263399 10.188 -54.6754
2.279800 10.098 -53.5862
2.296321 10.011 -52.4200
2.312961 9.927 -51.1720
2.329721 9.847 -49.8371
2.346604 9.771 -48.4107
2.363608 9.698 -46.8884
2.380736 9.630 -45.2660
2.397988 9.566 -43.5401
2.415365 9.507 -41.7079
2.432867 9.453 -39.7677
2.450497 9.405 -37.7193
2.468254 9.363 -35.5637
2.486140 9.329 -33.3039
2.504156 9.304 -30.9449
2.522302 9.290 -28.4937
2.540580 9.286 -25.9598
2.558990 9.296 -23.3545
2.577533 9.321 -20.6912
2.596211 9.363 -17.9850
2.615024 9.422 -15.2519
2.633974 9.501 -12.5088
2.653061 9.600 -9.7725
2.672286 9.721 -7.0591
2.691650 9.863 -4.3841
2.711155 10.026 -1.7611
2.730801 10.210 0.7976
2.750590 10.414 3.2818
2.770522 10.636 5.6832
2.790598 10.874 7.9954
2.810820 11.126 10.2142
2.831188 11.390 12.3369
2.851704 11.664 14.3623
2.872369 11.945 16.2909
2.893183 12.231 18.1242
2.914148 12.521 19.8645
2.935265 12.812 21.5152
2.956535 13.104 23.0798
2.977960 13.395 24.5624
2.999539 13.686 25.9673
3.021275 13.974 27.2989
3.043169 14.260 28.5617
3.065221 14.545 29.7604
3.087432 14.827 30.8996
3.109805 15.108 31.9838
3.132340 15.386 33.0177
3.155038 15.663 34.0057
3.177901 15.937 34.9524
3.200929 16.210 35.8617
3.224124 16.480 36.7376
3.247488 16.747 37.5838
3.271020 17.012 38.4033
3.294724 17.274 39.1990
3.318599 17.533 39.9735
3.342646 17.789 40.7288
3.366868 18.042 41.4667
3.391266 18.292 42.1889
3.415841 18.539 42.8966
3.440593 18.784 43.5913
3.465525 19.026 44.2739
3.490638 19.267 44.9458
3.515932 19.505 45.6078
3.541410 19.743 46.2610
3.567073 19.979 46.9063
3.592921 20.215 47.5442
3.618957 20.450 48.1754
3.645181 20.685 48.8002
3.671596 20.920 49.4188
3.698201 21.155 50.0310
3.725000 21.390 50.6366
3.751993 21.626 51.2352
3.779181 21.862 51.8259
3.806567 22.098 52.4080
3.834151 22.335 52.9806
3.861935 22.573 53.5425
3.889920 22.811 54.0928
3.918108 23.051 54.6305
3.946500 23.291 55.1544
3.975098 23.533 55.6638
4.003903 23.776 56.1577
4.032917 24.020 56.6354
4.062142 24.264 57.0959
4.091578 24.510 57.5383
4.121227 24.757 57.9617
4.151092 25.005 58.3650
4.181172 25.253 58.7470
4.211471 25.502 59.1067
4.241989 25.752 59.4430
4.272728 26.002 59.7550
4.303690 26.252 60.0419
4.334876 26.502 60.3032
4.366288 26.751 60.5386
4.397928 27.001 60.7480
4.429798 27.250 60.9313
4.461898 27.499 61.0884
4.494231 27.747 61.2192
4.526798 27.994 61.3237
4.559601 28.240 61.4018
4.592641 28.485 61.4536
4.625922 28.728 61.4790
4.659443 28.970 61.4784
4.693207 29.210 61.4520
4.727216 29.448 61.4003
4.761472 29.684 61.3238
4.795975 29.918 61.2231
4.830729 30.151 61.0988
4.865735 30.381 60.9515
4.900994 30.609 60.7816
4.936509 30.834 60.5898
4.972281 31.058 60.3764
5.008312 31.279 60.1422
5.044604 31.498 59.8874
5.081159 31.714 59.6128
5.117980 31.928 59.3187
5.155066 32.140 59.0058
5.192422 32.349 58.6743
5.230049 32.556 58.3248
5.267948 32.761 57.9575
5.306121 32.964 57.5727
5.344572 33.165 57.1706
5.383301 33.364 56.7514
5.422310 33.561 56.3151
5.461603 33.756 55.8617
5.501180 33.949 55.3912
5.541043 34.140 54.9033
5.581196 34.330 54.3976
5.621639 34.518 53.8740
5.662376 34.704 53.3319
5.703408 34.889 52.7709
5.744737 35.073 52.1904
5.786366 35.256 51.5899
5.828296 35.437 50.9685
5.870531 35.616 50.3255
5.913071 35.795 49.6599
5.955919 35.972 48.9708
5.999078 36.148 48.2573
6.042550 36.322 47.5184
6.086337 36.496 46.7531
6.130441 36.667 45.9607
6.174865 36.838 45.1401
6.219610 37.007 44.2904
6.264680 37.174 43.4106
6.310076 37.339 42.5000
6.355802 37.502 41.5577
6.401858 37.663 40.5831
6.448249 37.822 39.5756
6.494976 37.979 38.5349
6.542041 38.132 37.4606
6.589447 38.283 36.3527
6.637197 38.431 35.2111
6.685293 38.576 34.0358
6.733737 38.717 32.8272
6.782532 38.854 31.5858
6.831681 38.987 30.3122
6.881186 39.116 29.0074
6.931050 39.241 27.6725
6.981276 39.361 26.3088
7.031865 39.477 24.9178
7.082820 39.587 23.5012
7.134145 39.693 22.0608
7.185842 39.793 20.5987
7.237914 39.888 19.1174
7.290362 39.978 17.6196
7.343191 40.062 16.1081
7.396403 40.141 14.5858
7.450000 40.214 13.0561
7.503986 40.283 11.5223
7.558363 40.346 9.9880
7.613134 40.404 8.4571
7.668302 40.458 6.9336
7.723869 40.508 5.4216
7.779840 40.553 3.9253
7.836215 40.596 2.4487
7.893000 40.636 0.9958
7.950196 40.674 -0.4293
8.007807 40.711 -1.8228
8.065835 40.748 -3.1813
8.124284 40.786 -4.5017
8.183156 40.827 -5.7817
8.242455 40.871 -7.0195
8.302183 40.919 -8.2142
8.362344 40.974 -9.3658
8.422941 41.036 -10.4751
8.483977 41.107 -11.5443
8.545456 41.188 -12.5768
8.607380 41.280 -13.5770
8.669752 41.385 -14.5504
8.732576 41.502 -15.5034
8.795856 41.632 -16.4434
8.859595 41.775 -17.3780
8.923796 41.932 -18.3153
8.988461 42.101 -19.2635
9.053596 42.282 -20.2302
9.119202 42.473 -21.2225
9.185283 42.674 -22.2465
9.251843 42.883 -23.3072
9.318886 43.098 -24.4082
9.386415 43.317 -25.5519
9.454432 43.539 -26.7390
9.522943 43.762 -27.9688
9.591950 43.984 -29.2391
9.661458 44.203 -30.5463
9.731469 44.419 -31.8855
9.801988 44.630 -33.2508
9.873017 44.835 -34.6351
9.944561 45.032 -36.0303
10.016623 45.222 -37.4277
10.089208 45.404 -38.8178
10.162318 45.578 -40.1908
10.235959 45.743 -41.5364
10.310133 45.900 -42.8443
10.384845 46.051 -44.1040
10.460097 46.195 -45.3056
10.535895 46.334 -46.4397
10.612243 46.469 -47.4978
10.689143 46.604 -48.4725
10.766602 46.739 -49.3583
10.844621 46.877 -50.1518
10.923205 47.021 -50.8522
11.002359 47.173 -51.4615
11.082087 47.336 -51.9851
11.162392 47.512 -52.4315
11.243279 47.702 -52.8129
11.324752 47.909 -53.1441
11.406816 48.132 -53.4425
11.489474 48.372 -53.7272
11.572732 48.628 -54.0178
11.656592 48.899 -54.3336
11.741061 49.183 -54.6926
11.826141 49.476 -55.1102
11.911839 49.777 -55.5993
11.998157 50.083 -56.1690
12.085100 50.391 -56.8250
12.172674 50.697 -57.5697
12.260882 51.000 -58.4020
12.349730 51.296 -59.3178
12.439220 51.585 -60.3107
12.529360 51.863 -61.3725
12.620152 52.131 -62.4929
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868.164124 89.540 47.7063
874.455200 89.452 47.6525
880.791870 89.363 47.5977
887.174438 89.269 47.5332
893.603271 89.165 47.4674
900.078674 89.048 47.4268
906.601013 88.915 47.4524
913.170593 88.765 47.5932
919.787781 88.602 47.8981
926.452942 88.428 48.4093
933.166382 88.252 49.1578
939.928467 88.080 50.1610
946.739563 87.920 51.4198
953.600037 87.782 52.9151
960.510193 87.674 54.6030
967.470459 87.600 56.4146
974.481140 87.566 58.2649
981.542603 87.569 60.0680
988.655273 87.608 61.7492
995.819458 87.674 63.2529
1003.035583 87.759 64.5449
1010.304016 87.856 65.6129
1017.625122 87.954 66.4646
1024.999268 88.045 67.1260
1032.426880 88.122 67.6391
1039.908325 88.180 68.0593
1047.443970 88.217 68.4498
1055.034180 88.234 68.8750
1062.679443 88.234 69.3926
1070.380005 88.223 70.0445
1078.136475 88.210 70.8505
1085.949097 88.201 71.8060
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1101.744629 88.217 74.0564
1109.728271 88.248 75.2797
1117.769775 88.294 76.5307
1125.869629 88.354 77.7989
1134.028198 88.427 79.0860
1142.245850 88.513 80.4005
1150.523071 88.615 81.7506
1158.860229 88.735 83.1382
1167.257812 88.875 84.5569
1175.716187 89.039 85.9913
1184.235962 89.227 87.4185
1192.817383 89.441 88.8074
1201.461060 89.680 90.1192
1210.167358 89.943 91.3104
1218.936768 90.225 92.3383
1227.769653 90.522 93.1684
1236.666626 90.827 93.7782
1245.628052 91.135 94.1575
1254.654419 91.439 94.3075
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1272.903809 92.012 93.9660
1282.127808 92.273 93.5173
1291.418579 92.511 92.9241
1300.776733 92.724 92.2237
1310.202759 92.913 91.4551
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1329.260132 93.225 89.8546
1338.892456 93.353 89.0715
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1408.302002 93.962 84.3759
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1449.568237 94.256 82.5392
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1686.898438 93.946 65.8728
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1748.910400 93.135 70.1386
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1800.157349 93.156 76.1600
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1839.575562 93.578 79.2878
1852.905884 93.755 79.8357
1866.332764 93.937 80.1339
1879.856934 94.115 80.2013
1893.479126 94.285 80.0644
1907.200073 94.442 79.7534
1921.020386 94.583 79.3004
1934.940918 94.706 78.7387
1948.962280 94.809 78.1009
1963.085205 94.894 77.4181
1977.310547 94.961 76.7180
1991.638916 95.013 76.0235
2006.071167 95.051 75.3524
2020.608032 95.078 74.7165
2035.250244 95.099 74.1207
2049.998535 95.114 73.5637
2064.853760 95.127 73.0401
2079.816650 95.139 72.5436
2094.887939 95.152 72.0673
2110.068359 95.167 71.6007
2125.358887 95.187 71.1275
2140.760010 95.210 70.6250
2156.272949 95.237 70.0678
2171.898193 95.263 69.4345
2187.636719 95.284 68.7125
2203.489258 95.294 67.9009
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2251.739258 95.218 65.0786
2268.056396 95.145 64.0990
2284.491699 95.047 63.1575
2301.046143 94.923 62.2910
2317.720459 94.776 61.5352
2334.515625 94.609 60.9249
2351.432373 94.425 60.4936
2368.471924 94.230 60.2729
2385.634766 94.029 60.2903
2402.922119 93.831 60.5645
2420.334717 93.644 61.1001
2437.873535 93.478 61.8810
2455.539307 93.343 62.8658
2473.333252 93.245 63.9870
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2527.492432 93.195 67.2799
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2564.255615 93.305 68.6702
2582.837158 93.373 69.0348
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2620.405518 93.488 69.2333
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2677.784912 93.559 68.9496
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2736.420654 93.555 68.9148
2756.250000 93.559 69.0392
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2816.604004 93.651 69.6719
2837.014160 93.719 69.8609
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2899.136475 94.018 69.8038
2920.144775 94.132 69.4816
2941.305420 94.243 68.9922
2962.619385 94.344 68.3484
2984.087646 94.431 67.5757
3005.711670 94.500 66.7064
3027.492188 94.550 65.7748
3049.430664 94.581 64.8130
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3093.785645 94.592 62.9088
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3138.785889 94.549 61.1794
3161.530762 94.515 60.4209
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3207.516113 94.444 59.1318
3230.759033 94.413 58.5844
3254.170410 94.387 58.0850
3277.751465 94.367 57.6225
3301.503418 94.354 57.1893
3325.427490 94.347 56.7820
3349.524902 94.345 56.4012
3373.796875 94.350 56.0487
3398.244873 94.363 55.7254
3422.869873 94.384 55.4291
3447.673340 94.415 55.1541
3472.656494 94.456 54.8929
3497.820801 94.509 54.6384
3523.167480 94.574 54.3847
3548.697754 94.651 54.1253
3574.413086 94.742 53.8508
3600.314697 94.847 53.5477
3626.404053 94.965 53.2000
3652.682373 95.097 52.7912
3679.151123 95.239 52.3081
3705.811768 95.389 51.7435
3732.665527 95.546 51.0990
3759.713867 95.707 50.3832
3786.958252 95.874 49.6066
3814.400146 96.049 48.7734
3842.040771 96.233 47.8760
3869.881836 96.427 46.8929
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3926.170410 96.834 44.5450
3954.621094 97.036 43.1231
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4220.136719 97.599 25.9159
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5433.468262 99.024 31.9865
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5512.500000 99.475 30.3550
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7046.334961 99.785 14.9211
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7411.623535 98.977 15.6621
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7573.916504 98.794 18.6119
7628.800293 98.811 19.6293
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7739.763672 98.950 21.1726
7795.849121 99.055 21.5787
7852.340820 99.173 21.7085
7909.242188 99.292 21.5673
7966.555664 99.405 21.1758
8024.284668 99.508 20.5628
8082.432129 99.595 19.7602
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8259.415039 99.752 16.5085
8319.266602 99.771 15.2206
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8440.273438 99.765 12.4250
8501.435547 99.742 10.9298
8563.040039 99.708 9.3726
8625.091797 99.662 7.7529
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8750.546875 99.532 4.3282
8813.957031 99.444 2.5317
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9270.881836 98.389 -10.2047
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10037.235352 97.324 -33.0932
10109.969727 97.250 -35.9423
10183.230469 97.163 -38.8823
10257.022461 97.061 -41.8921
10331.348633 96.944 -44.9514
10406.213867 96.809 -48.0394
10481.622070 96.653 -51.1345
10557.576172 96.474 -54.2125
10634.081055 96.271 -57.2469
10711.139648 96.039 -60.2068
10788.756836 95.779 -63.0563
10866.936523 95.489 -65.7555
10945.682617 95.170 -68.2625
11025.000000 94.823 -70.5361
11104.891602 94.452 -72.5388
11185.362305 94.060 -74.2390
11266.416016 93.654 -75.6121
11348.056641 93.238 -76.6401
11430.289062 92.818 -77.3107
11513.117188 92.401 -77.6143
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11680.579102 91.601 -77.0884
11765.221680 91.233 -76.2520
11850.477539 90.898 -75.0497
11936.350586 90.608 -73.5265
12022.846680 90.369 -71.7629
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12197.722656 90.065 -67.9930
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12464.818359 89.963 -63.5950
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12737.761719 89.970 -62.0087
12830.064453 89.933 -61.9921
12923.036133 89.860 -62.1272
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13206.013672 89.367 -62.6458
13301.709961 89.103 -62.5625
13398.099609 88.791 -62.1996
13495.187500 88.438 -61.4696
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13790.693359 87.229 -56.3425
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14092.669922 86.066 -46.2871
14194.791016 85.748 -42.1292
14297.652344 85.478 -37.8383
14401.258789 85.256 -33.5994
14505.616211 85.075 -29.5505
14610.729492 84.926 -25.7488
14716.604492 84.798 -22.1658
14823.247070 84.683 -18.7114
14930.662109 84.581 -15.2723
15038.855469 84.493 -11.7489
15147.833008 84.427 -8.0851
15257.600586 84.391 -4.2844
15368.163086 84.395 -0.4105
15479.527344 84.444 3.4273
15591.698242 84.538 7.0994
15704.681641 84.674 10.4816
15818.484375 84.844 13.4744
15933.111328 85.036 16.0117
16048.569336 85.236 18.0631
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16282.001953 85.609 20.7491
16399.988281 85.758 21.4703
16518.830078 85.868 21.8650
16638.533203 85.934 22.0102
16759.103516 85.950 21.9841
16880.546875 85.915 21.8611
17002.871094 85.826 21.7101
17126.080078 85.683 21.5952
17250.183594 85.488 21.5781
17375.185547 85.241 21.7207
17501.093750 84.946 22.0864
17627.914062 84.605 22.7383
17755.652344 84.223 23.7344
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18013.914062 83.366 26.9313
18144.451172 82.906 29.1752
18275.933594 82.437 31.8410
18408.369141 81.969 34.8902
18541.763672 81.511 38.2593
18676.125000 81.068 41.8659
18811.458984 80.649 45.6165
18947.775391 80.260 49.4123
19085.078125 79.905 53.1487
19223.376953 79.592 56.7110
19362.677734 79.327 59.9719
19502.988281 79.115 62.7953
19644.314453 78.958 65.0477
19786.666016 78.855 66.6153
19930.048828 78.805 67.4186

Cdt.

Bonjour Boris,

Pour utiliser un simulateur tel Xsim ou VituiCad de manière fiable, en passif, il faut présenter au logiciel une courbe SPL MAG/PHASE ainsi qu'une mesure d'impédance de type .ZMA valide
(obligatoire).

Il y a une relation intime entre courbe d'impédance électrique et réponse SPL du HP au-dessus de 200 Hz, là où il n'y a plus trop d'influence du type de charge sur la réponse. Utiliser un simulateur sans la courbe d'impédance (et utiliser le placebo " default 8 ohm resistive ") casse cette relation, et ne donnera pas de résultats concluants.

Pour affecter la réponse SPL de manière à la fois audible et visible aux mesures, il faudrait présenter au HP des valeurs de réseau RC compensateur d'impédance particulièrement "tordues", faisant plonger la courbe d'impédance résultante Zmin bien en-dessous du minima donné par le constructeur pour le HP nu (e.g. 2 Ohms)

Cependant, en couplage avec un ampli à tubes d’impédance de sortie relativement élevée, un réseau RC particulièrement bien calculé est nécessaire afin de ne pas obtenir trop de déviation de réponse SPL. Mais si cette dernière est présente, et que ça "arrange" les choses, ça peut être un pansem*nt sur une jambe de bois, et éventuellement améliorer l'écoute ... mais là on est dans les worst case des worst case ... Autant se tenir si possible à distance de ce type d' "artifice"

crdt

TOUT · HOMME · CRÉE · SANS · LE · SAVOIR · COMME · IL · RESPIRE · MAIS · L'ARTISTE · SE · SENT · CRÉER · SON · ACTE · ENGAGE · TOUT · SON · ÊTRE · SA · PEINE · BIEN-AIMÉE · LE · FORTIFIE

Paul Valéry

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italia

autodidacte pro

Messages : 816
Sujets : 92
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25/08/2024-12:26:14 (Modification du message : 25/08/2024-12:42:10 par italia.)

(24/08/2024-22:24:35)RM8Kinosh*ta a écrit : Bonsoir italia,

Un correcteur d'impédance RC branché aux bornes du HP, avec un ampli correct, n'a normalement aucune influence sur la courbe de réponse de ce dernier.

Pour modifier la courbe de réponse il faut utiliser un correcteur RLC "parallèle" (ou les 3 composants sont en parallèle, le tout mis en série avec le HP)

crdt.

bonjour l'arrogance mr hiroshima
tous ces formules et calcules c'est inutile, ca sonne très très bien depuis et c'est fondamentale
inutile chercher midi a 14
moi aussi je croyez faiblement n'ayant pas testé sans, comme votre boule cristal " n'a normalement aucune influence sur la courbe de réponse"
tout faux , c'est pourquoi j'interviens, toucher pour croire , St Thomas
la surprise est l'influence que je croyez minime avant la panne est en effet important
et mes amplis c'est GM70 100TH 304TL en A2 13Kg le transfo sortie.....
la c'est plus que parfait a mes oreilles
les mesures c'est toujours sur des données incomplètes et ou erronée
je compare avec casque HD800 et le réalisme est satisfaisant

https://www.claudiomas.fr/

Site web

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mastro

Le Muy tout prés de Fréjus dans le Var

Messages : 2.458
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enregistré

25/08/2024-12:53:53 (Modification du message : 25/08/2024-13:50:46 par mastro.)

(25/08/2024-12:26:14)italia a écrit :

(24/08/2024-22:24:35)RM8Kinosh*ta a écrit : Bonsoir italia,

Un correcteur d'impédance RC branché aux bornes du HP, avec un ampli correct, n'a normalement aucune influence sur la courbe de réponse de ce dernier.

Pour modifier la courbe de réponse il faut utiliser un correcteur RLC "parallèle" (ou les 3 composants sont en parallèle, le tout mis en série avec le HP)

crdt.

bonjour l'arrogance mr hiroshima
tous ces formules et calcules c'est inutile, ca sonne très très bien depuis et c'est fondamentale
inutile chercher midi a 14H
la surprise est l'influence que je croyez minime avant la panne
la c'est plus que parfait a mes oreilles
les mesures c'est toujours sur des données incomplètes et ou erronée
je compare avec casque HD800 et le réalisme est satisfaisant

.

C'est pas de l'arrogance c'est tout simplement la réalité qui injustement te déplaît...

Un Ampli a tube avec transfo de sortie est très sensible à l'impédance de la charge ,et Ça tu le sais très bien...

C'est pareil pour les filtrages passifs des enceintes multivoies qui ne fonctionnent correctement que sur une courbe impédance de HP corrigée.

Un RC sur un Lb ne sert qu'à corriger sa courbe d'impédance, et on utilise plutôt un rlc pour corriger la courbe de réponse d'un HP ou Lb..

Je connais très bien les blh avec ton fostex depuis 2006 , c'est vraiment très limité comme enceinte avec pleins de défauts audibles qui sont facilement mesurables , globalement j'aime pas sauf le médium qui peut etre assez correct (si bien corrigé) et c'est donc pas du tout comparable avec un casque Hd800..

Subjectivement ta préférence de choix avec ton jugement est a mon avis plutôt très empirique car
rm8 à objectivement totalement raison .

A mon avis plutôt très objectif, le Lb 215 héritage à cône , n'est pas un vrai Lb car techniquement sa courbe de courbe de phase n'est pas à phase minimale , il existe de la distorsion de phase sur la zone du médium -aigu ,j'ai très peu de chance de me planter car il serait alors une très tres tres rare exception ;-)

En plus
Comme tous les Lb il est sûrement très limité dans le grave et dans l'aigu , en fragmentant sûrement bien avant 2khz comme tous les HP a cône de 21cm , en bref très bof à mon avis , et très suffisant pour faire subjectivement l'impasse dans de le cadre d'une enceinte hifi très rigoureuse.

Un Lb bicone est a mon avis une solution d'aigu empirique, en gros comme un emplâtre sur une jambe de bois....

Trouver

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boris

Senior Member

Messages : 572
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25/08/2024-13:28:13 (Modification du message : 25/08/2024-13:33:34 par boris.)

(25/08/2024-11:08:39)RM8Kinosh*ta a écrit :

(24/08/2024-23:51:47)boris a écrit : ben si, dans tout les cas tu modifies la courbe SPL du HP unique.

fais la simu avec ce texte.

Code :

* Measurement data measured by REW V5.20.13
* Source: Microphone (5- USB Audio CODEC ), MICROPHONE (Volume principal), R, volume: 0,650
* Format: 512k Log Swept Sine, 1 sweep at -12,0 dBFS with no timing reference
* Dated: 24 août 2023 15:53:39
* REW Settings:
* C-weighting compensation: Off
* Target level: 75.0 dB
* Note: Axe droite prox
* Measurement: août 24
* Smoothing: 1/6 octave
* Frequency Step: 96 ppo
* Start Frequency: 0.3364563 Hz
*
* Freq(Hz) SPL(dB) Phase(degrees)
0.336456 10.044 -179.0101
0.338894 10.033 -178.9991
0.341350 10.020 -178.9844
0.343824 10.003 -178.9662
0.346315 9.983 -178.9449
0.348825 9.961 -178.9209
0.351352 9.938 -178.8946
0.353898 9.912 -178.8662
0.356463 9.885 -178.8361
0.359046 9.857 -178.8045
0.361648 9.828 -178.7714
0.364269 9.799 -178.7371
0.366908 9.768 -178.7017
0.369567 9.738 -178.6652
0.372245 9.706 -178.6277
0.374942 9.675 -178.5891
0.377659 9.643 -178.5496
0.380396 9.611 -178.5092
0.383153 9.578 -178.4677
0.385929 9.545 -178.4252
0.388726 9.512 -178.3817
0.391542 9.479 -178.3372
0.394380 9.445 -178.2917
0.397238 9.411 -178.2450
0.400116 9.377 -178.1972
0.403016 9.343 -178.1483
0.405936 9.308 -178.0982
0.408878 9.273 -178.0469
0.411840 9.238 -177.9943
0.414825 9.203 -177.9404
0.417831 9.167 -177.8852
0.420859 9.131 -177.8286
0.423908 9.095 -177.7706
0.426980 9.058 -177.7111
0.430074 9.022 -177.6501
0.433191 8.985 -177.5875
0.436330 8.947 -177.5234
0.439492 8.910 -177.4575
0.442676 8.872 -177.3900
0.445884 8.834 -177.3206
0.449115 8.796 -177.2495
0.452370 8.757 -177.1764
0.455648 8.718 -177.1014
0.458949 8.679 -177.0244
0.462275 8.640 -176.9453
0.465625 8.600 -176.8641
0.468999 8.560 -176.7806
0.472398 8.520 -176.6948
0.475821 8.479 -176.6066
0.479269 8.438 -176.5160
0.482742 8.397 -176.4229
0.486240 8.355 -176.3271
0.489763 8.314 -176.2286
0.493313 8.272 -176.1273
0.496887 8.229 -176.0231
0.500488 8.186 -175.9159
0.504115 8.143 -175.8056
0.507768 8.100 -175.6921
0.511447 8.056 -175.5753
0.515153 8.012 -175.4550
0.518886 7.968 -175.3312
0.522646 7.924 -175.2037
0.526434 7.879 -175.0724
0.530249 7.833 -174.9371
0.534091 7.788 -174.7978
0.537961 7.742 -174.6543
0.541860 7.696 -174.5064
0.545786 7.649 -174.3539
0.549741 7.602 -174.1969
0.553725 7.555 -174.0349
0.557737 7.508 -173.8679
0.561779 7.460 -173.6957
0.565850 7.411 -173.5182
0.569950 7.363 -173.3351
0.574080 7.314 -173.1462
0.578240 7.264 -172.9513
0.582430 7.215 -172.7503
0.586651 7.165 -172.5428
0.590902 7.114 -172.3288
0.595184 7.064 -172.1078
0.599497 7.013 -171.8798
0.603841 6.961 -171.6443
0.608217 6.909 -171.4013
0.612624 6.857 -171.1504
0.617064 6.805 -170.8913
0.621535 6.752 -170.6236
0.626039 6.699 -170.3472
0.630575 6.645 -170.0617
0.635145 6.592 -169.7667
0.639747 6.538 -169.4619
0.644383 6.484 -169.1468
0.649053 6.430 -168.8211
0.653756 6.375 -168.4842
0.658493 6.321 -168.1357
0.663265 6.267 -167.7751
0.668071 6.212 -167.4017
0.672913 6.158 -167.0149
0.677789 6.104 -166.6141
0.682700 6.050 -166.1986
0.687647 5.995 -165.7677
0.692630 5.941 -165.3206
0.697649 5.886 -164.8566
0.702705 5.830 -164.3750
0.707797 5.774 -163.8750
0.712926 5.718 -163.3559
0.718092 5.661 -162.8170
0.723296 5.603 -162.2574
0.728537 5.545 -161.6764
0.733816 5.486 -161.0733
0.739134 5.427 -160.4474
0.744490 5.367 -159.7978
0.749885 5.306 -159.1238
0.755319 5.245 -158.4246
0.760792 5.183 -157.6995
0.766305 5.121 -156.9478
0.771858 5.059 -156.1687
0.777451 4.996 -155.3614
0.783085 4.934 -154.5255
0.788760 4.871 -153.6601
0.794475 4.808 -152.7647
0.800232 4.746 -151.8388
0.806031 4.684 -150.8819
0.811872 4.622 -149.8936
0.817755 4.560 -148.8737
0.823681 4.499 -147.8219
0.829650 4.439 -146.7381
0.835662 4.379 -145.6225
0.841717 4.321 -144.4752
0.847817 4.264 -143.2966
0.853960 4.208 -142.0874
0.860148 4.153 -140.8483
0.866381 4.100 -139.5802
0.872659 4.048 -138.2843
0.878983 3.999 -136.9620
0.885353 3.951 -135.6150
0.891768 3.906 -134.2451
0.898230 3.863 -132.8545
0.904739 3.823 -131.4453
0.911295 3.786 -130.0201
0.917899 3.752 -128.5816
0.924550 3.721 -127.1326
0.931250 3.694 -125.6760
0.937998 3.670 -124.2149
0.944795 3.651 -122.7522
0.951642 3.636 -121.2910
0.958538 3.625 -119.8342
0.965484 3.620 -118.3848
0.972480 3.619 -116.9453
0.979527 3.624 -115.5181
0.986625 3.635 -114.1054
0.993775 3.652 -112.7092
1.000976 3.676 -111.3311
1.008229 3.705 -109.9723
1.015535 3.742 -108.6342
1.022895 3.786 -107.3177
1.030307 3.836 -106.0238
1.037773 3.894 -104.7532
1.045293 3.959 -103.5070
1.052868 4.032 -102.2858
1.060497 4.111 -101.0906
1.068182 4.198 -99.9221
1.075922 4.291 -98.7811
1.083719 4.391 -97.6682
1.091572 4.497 -96.5839
1.099482 4.609 -95.5286
1.107449 4.727 -94.5028
1.115474 4.850 -93.5065
1.123558 4.979 -92.5399
1.131699 5.112 -91.6030
1.139900 5.250 -90.6955
1.148160 5.392 -89.8173
1.156480 5.537 -88.9680
1.164861 5.686 -88.1473
1.173302 5.837 -87.3546
1.181804 5.990 -86.5893
1.190368 6.145 -85.8510
1.198994 6.302 -85.1389
1.207682 6.459 -84.4524
1.216434 6.617 -83.7908
1.225248 6.774 -83.1534
1.234127 6.931 -82.5394
1.243070 7.087 -81.9481
1.252078 7.241 -81.3787
1.261151 7.393 -80.8307
1.270290 7.542 -80.3032
1.279495 7.689 -79.7956
1.288767 7.833 -79.3073
1.298106 7.973 -78.8376
1.307512 8.110 -78.3860
1.316987 8.244 -77.9521
1.326530 8.373 -77.5352
1.336143 8.499 -77.1351
1.345825 8.622 -76.7512
1.355578 8.742 -76.3833
1.365401 8.858 -76.0310
1.375295 8.972 -75.6938
1.385261 9.084 -75.3714
1.395299 9.193 -75.0633
1.405410 9.301 -74.7689
1.415594 9.406 -74.4876
1.425852 9.510 -74.2190
1.436184 9.612 -73.9623
1.446591 9.712 -73.7169
1.457074 9.810 -73.4821
1.467633 9.907 -73.2572
1.478268 10.002 -73.0414
1.488980 10.095 -72.8341
1.499770 10.186 -72.6344
1.510638 10.275 -72.4417
1.521584 10.362 -72.2553
1.532610 10.448 -72.0744
1.543716 10.531 -71.8985
1.554903 10.612 -71.7267
1.566170 10.690 -71.5584
1.577519 10.766 -71.3932
1.588950 10.840 -71.2305
1.600465 10.911 -71.0697
1.612062 10.980 -70.9106
1.623744 11.045 -70.7528
1.635510 11.108 -70.5961
1.647362 11.169 -70.4405
1.659299 11.226 -70.2860
1.671323 11.280 -70.1327
1.683434 11.330 -69.9807
1.695633 11.378 -69.8302
1.707920 11.422 -69.6813
1.720297 11.463 -69.5341
1.732763 11.501 -69.3885
1.745319 11.535 -69.2440
1.757966 11.566 -69.1003
1.770705 11.593 -68.9568
1.783536 11.616 -68.8127
1.796461 11.637 -68.6669
1.809478 11.653 -68.5185
1.822591 11.666 -68.3662
1.835798 11.676 -68.2087
1.849101 11.681 -68.0448
1.862500 11.684 -67.8729
1.875996 11.682 -67.6915
1.889591 11.677 -67.4991
1.903283 11.669 -67.2942
1.917075 11.656 -67.0751
1.930967 11.640 -66.8404
1.944960 11.619 -66.5886
1.959054 11.595 -66.3183
1.973250 11.566 -66.0280
1.987549 11.533 -65.7166
2.001952 11.495 -65.3829
2.016459 11.452 -65.0259
2.031071 11.404 -64.6443
2.045789 11.350 -64.2371
2.060614 11.292 -63.8031
2.075546 11.228 -63.3407
2.090586 11.158 -62.8483
2.105735 11.084 -62.3240
2.120994 11.006 -61.7653
2.136364 10.923 -61.1698
2.151845 10.836 -60.5346
2.167438 10.747 -59.8565
2.183144 10.655 -59.1321
2.198964 10.562 -58.3576
2.214899 10.468 -57.5290
2.230949 10.374 -56.6421
2.247115 10.280 -55.6924
2.263399 10.188 -54.6754
2.279800 10.098 -53.5862
2.296321 10.011 -52.4200
2.312961 9.927 -51.1720
2.329721 9.847 -49.8371
2.346604 9.771 -48.4107
2.363608 9.698 -46.8884
2.380736 9.630 -45.2660
2.397988 9.566 -43.5401
2.415365 9.507 -41.7079
2.432867 9.453 -39.7677
2.450497 9.405 -37.7193
2.468254 9.363 -35.5637
2.486140 9.329 -33.3039
2.504156 9.304 -30.9449
2.522302 9.290 -28.4937
2.540580 9.286 -25.9598
2.558990 9.296 -23.3545
2.577533 9.321 -20.6912
2.596211 9.363 -17.9850
2.615024 9.422 -15.2519
2.633974 9.501 -12.5088
2.653061 9.600 -9.7725
2.672286 9.721 -7.0591
2.691650 9.863 -4.3841
2.711155 10.026 -1.7611
2.730801 10.210 0.7976
2.750590 10.414 3.2818
2.770522 10.636 5.6832
2.790598 10.874 7.9954
2.810820 11.126 10.2142
2.831188 11.390 12.3369
2.851704 11.664 14.3623
2.872369 11.945 16.2909
2.893183 12.231 18.1242
2.914148 12.521 19.8645
2.935265 12.812 21.5152
2.956535 13.104 23.0798
2.977960 13.395 24.5624
2.999539 13.686 25.9673
3.021275 13.974 27.2989
3.043169 14.260 28.5617
3.065221 14.545 29.7604
3.087432 14.827 30.8996
3.109805 15.108 31.9838
3.132340 15.386 33.0177
3.155038 15.663 34.0057
3.177901 15.937 34.9524
3.200929 16.210 35.8617
3.224124 16.480 36.7376
3.247488 16.747 37.5838
3.271020 17.012 38.4033
3.294724 17.274 39.1990
3.318599 17.533 39.9735
3.342646 17.789 40.7288
3.366868 18.042 41.4667
3.391266 18.292 42.1889
3.415841 18.539 42.8966
3.440593 18.784 43.5913
3.465525 19.026 44.2739
3.490638 19.267 44.9458
3.515932 19.505 45.6078
3.541410 19.743 46.2610
3.567073 19.979 46.9063
3.592921 20.215 47.5442
3.618957 20.450 48.1754
3.645181 20.685 48.8002
3.671596 20.920 49.4188
3.698201 21.155 50.0310
3.725000 21.390 50.6366
3.751993 21.626 51.2352
3.779181 21.862 51.8259
3.806567 22.098 52.4080
3.834151 22.335 52.9806
3.861935 22.573 53.5425
3.889920 22.811 54.0928
3.918108 23.051 54.6305
3.946500 23.291 55.1544
3.975098 23.533 55.6638
4.003903 23.776 56.1577
4.032917 24.020 56.6354
4.062142 24.264 57.0959
4.091578 24.510 57.5383
4.121227 24.757 57.9617
4.151092 25.005 58.3650
4.181172 25.253 58.7470
4.211471 25.502 59.1067
4.241989 25.752 59.4430
4.272728 26.002 59.7550
4.303690 26.252 60.0419
4.334876 26.502 60.3032
4.366288 26.751 60.5386
4.397928 27.001 60.7480
4.429798 27.250 60.9313
4.461898 27.499 61.0884
4.494231 27.747 61.2192
4.526798 27.994 61.3237
4.559601 28.240 61.4018
4.592641 28.485 61.4536
4.625922 28.728 61.4790
4.659443 28.970 61.4784
4.693207 29.210 61.4520
4.727216 29.448 61.4003
4.761472 29.684 61.3238
4.795975 29.918 61.2231
4.830729 30.151 61.0988
4.865735 30.381 60.9515
4.900994 30.609 60.7816
4.936509 30.834 60.5898
4.972281 31.058 60.3764
5.008312 31.279 60.1422
5.044604 31.498 59.8874
5.081159 31.714 59.6128
5.117980 31.928 59.3187
5.155066 32.140 59.0058
5.192422 32.349 58.6743
5.230049 32.556 58.3248
5.267948 32.761 57.9575
5.306121 32.964 57.5727
5.344572 33.165 57.1706
5.383301 33.364 56.7514
5.422310 33.561 56.3151
5.461603 33.756 55.8617
5.501180 33.949 55.3912
5.541043 34.140 54.9033
5.581196 34.330 54.3976
5.621639 34.518 53.8740
5.662376 34.704 53.3319
5.703408 34.889 52.7709
5.744737 35.073 52.1904
5.786366 35.256 51.5899
5.828296 35.437 50.9685
5.870531 35.616 50.3255
5.913071 35.795 49.6599
5.955919 35.972 48.9708
5.999078 36.148 48.2573
6.042550 36.322 47.5184
6.086337 36.496 46.7531
6.130441 36.667 45.9607
6.174865 36.838 45.1401
6.219610 37.007 44.2904
6.264680 37.174 43.4106
6.310076 37.339 42.5000
6.355802 37.502 41.5577
6.401858 37.663 40.5831
6.448249 37.822 39.5756
6.494976 37.979 38.5349
6.542041 38.132 37.4606
6.589447 38.283 36.3527
6.637197 38.431 35.2111
6.685293 38.576 34.0358
6.733737 38.717 32.8272
6.782532 38.854 31.5858
6.831681 38.987 30.3122
6.881186 39.116 29.0074
6.931050 39.241 27.6725
6.981276 39.361 26.3088
7.031865 39.477 24.9178
7.082820 39.587 23.5012
7.134145 39.693 22.0608
7.185842 39.793 20.5987
7.237914 39.888 19.1174
7.290362 39.978 17.6196
7.343191 40.062 16.1081
7.396403 40.141 14.5858
7.450000 40.214 13.0561
7.503986 40.283 11.5223
7.558363 40.346 9.9880
7.613134 40.404 8.4571
7.668302 40.458 6.9336
7.723869 40.508 5.4216
7.779840 40.553 3.9253
7.836215 40.596 2.4487
7.893000 40.636 0.9958
7.950196 40.674 -0.4293
8.007807 40.711 -1.8228
8.065835 40.748 -3.1813
8.124284 40.786 -4.5017
8.183156 40.827 -5.7817
8.242455 40.871 -7.0195
8.302183 40.919 -8.2142
8.362344 40.974 -9.3658
8.422941 41.036 -10.4751
8.483977 41.107 -11.5443
8.545456 41.188 -12.5768
8.607380 41.280 -13.5770
8.669752 41.385 -14.5504
8.732576 41.502 -15.5034
8.795856 41.632 -16.4434
8.859595 41.775 -17.3780
8.923796 41.932 -18.3153
8.988461 42.101 -19.2635
9.053596 42.282 -20.2302
9.119202 42.473 -21.2225
9.185283 42.674 -22.2465
9.251843 42.883 -23.3072
9.318886 43.098 -24.4082
9.386415 43.317 -25.5519
9.454432 43.539 -26.7390
9.522943 43.762 -27.9688
9.591950 43.984 -29.2391
9.661458 44.203 -30.5463
9.731469 44.419 -31.8855
9.801988 44.630 -33.2508
9.873017 44.835 -34.6351
9.944561 45.032 -36.0303
10.016623 45.222 -37.4277
10.089208 45.404 -38.8178
10.162318 45.578 -40.1908
10.235959 45.743 -41.5364
10.310133 45.900 -42.8443
10.384845 46.051 -44.1040
10.460097 46.195 -45.3056
10.535895 46.334 -46.4397
10.612243 46.469 -47.4978
10.689143 46.604 -48.4725
10.766602 46.739 -49.3583
10.844621 46.877 -50.1518
10.923205 47.021 -50.8522
11.002359 47.173 -51.4615
11.082087 47.336 -51.9851
11.162392 47.512 -52.4315
11.243279 47.702 -52.8129
11.324752 47.909 -53.1441
11.406816 48.132 -53.4425
11.489474 48.372 -53.7272
11.572732 48.628 -54.0178
11.656592 48.899 -54.3336
11.741061 49.183 -54.6926
11.826141 49.476 -55.1102
11.911839 49.777 -55.5993
11.998157 50.083 -56.1690
12.085100 50.391 -56.8250
12.172674 50.697 -57.5697
12.260882 51.000 -58.4020
12.349730 51.296 -59.3178
12.439220 51.585 -60.3107
12.529360 51.863 -61.3725
12.620152 52.131 -62.4929
12.711603 52.387 -63.6611
12.803717 52.630 -64.8653
12.896498 52.861 -66.0935
12.989951 53.079 -67.3337
13.084082 53.285 -68.5743
13.178894 53.480 -69.8047
13.274394 53.665 -71.0149
13.370585 53.842 -72.1965
13.467474 54.011 -73.3427
13.565064 54.174 -74.4483
13.663363 54.334 -75.5103
13.762373 54.492 -76.5278
13.862101 54.649 -77.5019
13.962551 54.807 -78.4358
14.063729 54.966 -79.3346
14.165641 55.129 -80.2047
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981.542603 87.569 60.0680
988.655273 87.608 61.7492
995.819458 87.674 63.2529
1003.035583 87.759 64.5449
1010.304016 87.856 65.6129
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1024.999268 88.045 67.1260
1032.426880 88.122 67.6391
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1101.744629 88.217 74.0564
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1963.085205 94.894 77.4181
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2006.071167 95.051 75.3524
2020.608032 95.078 74.7165
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15038.855469 84.493 -11.7489
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15818.484375 84.844 13.4744
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16518.830078 85.868 21.8650
16638.533203 85.934 22.0102
16759.103516 85.950 21.9841
16880.546875 85.915 21.8611
17002.871094 85.826 21.7101
17126.080078 85.683 21.5952
17250.183594 85.488 21.5781
17375.185547 85.241 21.7207
17501.093750 84.946 22.0864
17627.914062 84.605 22.7383
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18408.369141 81.969 34.8902
18541.763672 81.511 38.2593
18676.125000 81.068 41.8659
18811.458984 80.649 45.6165
18947.775391 80.260 49.4123
19085.078125 79.905 53.1487
19223.376953 79.592 56.7110
19362.677734 79.327 59.9719
19502.988281 79.115 62.7953
19644.314453 78.958 65.0477
19786.666016 78.855 66.6153
19930.048828 78.805 67.4186

Cdt.

Bonjour Boris,

Pour utiliser un simulateur tel Xsim ou VituiCad de manière fiable, en passif, il faut présenter au logiciel une courbe SPL MAG/PHASE ainsi qu'une mesure d'impédance de type .ZMA valide
(obligatoire).

Il y a une relation intime entre courbe d'impédance électrique et réponse SPL du HP au-dessus de 200 Hz, là où il n'y a plus trop d'influence du type de charge sur la réponse. Utiliser un simulateur sans la courbe d'impédance (et utiliser le placebo " default 8 ohm resistive ") casse cette relation, et ne donnera pas de résultats concluants.

Pour affecter la réponse SPL de manière à la fois audible et visible aux mesures, il faudrait présenter au HP des valeurs de réseau RC compensateur d'impédance particulièrement "tordues", faisant plonger la courbe d'impédance résultante Zmin bien en-dessous du minima donné par le constructeur pour le HP nu (e.g. 2 Ohms)

Cependant, en couplage avec un ampli à tubes d’impédance de sortie relativement élevée, un réseau RC particulièrement bien calculé est nécessaire afin de ne pas obtenir trop de déviation de réponse SPL. Mais si cette dernière est présente, et que ça "arrange" les choses, ça peut être un pansem*nt sur une jambe de bois, et éventuellement améliorer l'écoute ... mais là on est dans les worst case des worst case ... Autant se tenir si possible à distance de ce type d' "artifice"

crdt

Salut RM8,

Ne détournes pas mon affirmation par condescendance comme tu sais faire

ZMA ou pas, tu auras le même résultat, à partir du moment où tu intègres un circuit impédant aux bornes du HP, tu modifies SPL et impédance, c'est un fait !!
Quand on rajoute un simple circuit de type RLC aux bornes d'un HP, qu'il soit //, série etc......... tu modifies tout ./

La seule manière de modifier l'impédance sans modifier la courbe SPL du HP est d'intégrer un circuit RLC correcteur d'impédance en amont de ton filtre, c'est tout.

Tu pourras le vérifier sur Virtuix, d'autre part, Virtuix ne simule pas un circuit résistif de 8 ou 4 Ohms mais un circuit impédant de 4 ou 8 Ohms linéaire

L'apport d'une courbe d'impédance (ZMA ou autre) amène plus (+) de précision pour le choix de valeurs des divers composant passif comme résistance, condensateur ou self, c'est tout.

Dans notre cas, on essaie pas d'enculer les mouches mais d'avoir une approche pragmatique vérifiable

@+

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RM8Kinosh*ta

* Quae sunt narshornis, narshorni *

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25/08/2024-15:41:37

(25/08/2024-13:28:13)boris a écrit : Salut RM8,

Ne détournes pas mon affirmation par condescendance comme tu sais faire

ZMA ou pas, tu auras le même résultat

Non pas du tout. Ça se vérifie en 3 secondes ...

(25/08/2024-13:28:13)boris a écrit : La seule manière de modifier l'impédance sans modifier la courbe SPL du HP est d'intégrer un circuit RLC correcteur d'impédance en amont de ton filtre, c'est tout.

Non, le RLC dit correcteur d'impédance n'est pas à placer en amont (avant) du filtre mais en son aval (après), directement aux bornes du HP.

La raison étant que

1°) il doit corriger uniquement l'impédance HP

afin que

2°) le filtre puisse s'appliquer ensuite sur une impédance globale (HP+RLC) préalablement linéarisée.

(25/08/2024-13:28:13)boris a écrit : d'autre part, Virtuix

VituixCAD

(25/08/2024-13:28:13)boris a écrit : ne simule pas un circuit résistif de 8 ou 4 Ohms mais un circuit impédant de 4 ou 8 Ohms linéaire

(25/08/2024-13:28:13)boris a écrit : L'apport d'une courbe d'impédance (ZMA ou autre) amène plus (+) de précision pour le choix de valeurs des divers composant passif comme résistance, condensateur ou self, c'est tout.

Non, désolé. Notions à revoir

crdt

TOUT · HOMME · CRÉE · SANS · LE · SAVOIR · COMME · IL · RESPIRE · MAIS · L'ARTISTE · SE · SENT · CRÉER · SON · ACTE · ENGAGE · TOUT · SON · ÊTRE · SA · PEINE · BIEN-AIMÉE · LE · FORTIFIE

Paul Valéry

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italia

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25/08/2024-16:05:08

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Ragnarsson

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25/08/2024-16:12:07

(25/08/2024-13:28:13)boris a écrit : Virtuix ne simule pas un circuit résistif de 8 ou 4 Ohms mais un circuit impédant de 4 ou 8 Ohms linéaire

Ouh là.

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Ragnarsson

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25/08/2024-16:18:18

(25/08/2024-16:05:08)italia a écrit : bla bla bla xyz-ky+xbs= ???
bla bla bla??? bla bla! xyz bla bla bla
j'ai deja vu des installations pondu avec des logiciels et mathématiciens, ca ne sonne pas ou mal
je voulais juste dire que le petit filtre // est indispensable
et ecrire " n'a normalement aucune influence sur la courbe de réponse"
c'est qua ca? il me prend pour un sourd???
quand j'affirme que c'est indispensable et je suis comblé
je ne m'attendais pas a telle grande arrogance et ignorance
pas besoin d'autre explications
je voulais partager une realité me voila servi!
au diable

Les logiciels et simulateurs il faut savoir s’en servir tout comme il faut savoir mesurer correctement pour pouvoir faire quelque chose avec les mesures.
Ton circuit RC est en parallèle de ton large bande, directement à ses bornes?
Si oui:
Si ton ampli à une impédance de sortie très faible, seule la phase du signal aux bornes du haut parleur sera différente. En HF cela sera non audible.
Par contre si ton ampli a une impédance de sortie importante (par exemple de l’ordre d’un Ohm) alors les différences seront en niveau et en phase et audibles.

Trouver

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