Andysu
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- #221
direct frequency response monitored on THX 3417 amp return .
strange it has high level of infersonic with no doubt low pass filter in the B-chain , but where in my B-chain ?
1 i would have check Denon 8500h SW connected directly to the computer REW
2 i would have to check Denon 8500h SW connected to Sony SDDS D3000 to computer REW
3 i would have to check Denon 8500h SW connected to Sony SDDS D3000 connected to Behringer FBQ2496 to computer REW
4 i would have to check Denon 8500h SW connected to Sony SDDS D3000 connected to Behringer FBQ2496 connected to DCX2496 connected to computer REW
5 i would have to check Denon 8500h SW connected to Sony SDDS D3000 connected to Behringer FBQ2496 connected to Behringer DCX2496 connected (back to THX 3417 )
6 i would have to check computer REW connected to Behringer NX3000 connected safely to THX 3417 (otherwise the amp would destroy the computer) and the test the REW
7 i would have test each part of the gear used in the B-chain one at a time . i would have to run so many tests to see which part of the B-chain gear has a low frequency filter roll off , not a big deal only hours/days of testing .
8 i would have to test Behringer RX1202FX to see if in any way it has filter frequency low pass filter ?
otherwise i see no issue with the REW frequency sweep directly to amplifier measured with THX 3417 . if i can see it then it must be real ?
strange it has high level of infersonic with no doubt low pass filter in the B-chain , but where in my B-chain ?
2 i would have to check Denon 8500h SW connected to Sony SDDS D3000 to computer REW
3 i would have to check Denon 8500h SW connected to Sony SDDS D3000 connected to Behringer FBQ2496 to computer REW
4 i would have to check Denon 8500h SW connected to Sony SDDS D3000 connected to Behringer FBQ2496 connected to DCX2496 connected to computer REW
5 i would have to check Denon 8500h SW connected to Sony SDDS D3000 connected to Behringer FBQ2496 connected to Behringer DCX2496 connected (back to THX 3417 )
6 i would have to check computer REW connected to Behringer NX3000 connected safely to THX 3417 (otherwise the amp would destroy the computer) and the test the REW
7 i would have test each part of the gear used in the B-chain one at a time . i would have to run so many tests to see which part of the B-chain gear has a low frequency filter roll off , not a big deal only hours/days of testing .
8 i would have to test Behringer RX1202FX to see if in any way it has filter frequency low pass filter ?
otherwise i see no issue with the REW frequency sweep directly to amplifier measured with THX 3417 . if i can see it then it must be real ?