Quote:
MakeFlat wrote:
 I'll comment on the blue curve. Your result is consistent with my REW runs for the Stereo Mode on the Denon 1604. There is one difference: In the Direct Mode, the SUB response appears to roll off at 8Hz on my 1604's SUB output. So I guess Denon changed the design. Why they decided to roll off Stereo at 40Hz on the Denon 160x, it stumps me 
Also, on my REW runs, in Stereo Mode, the mains and sub appear to be quite a bit lower in level when compared to all other modes: PL2, 5 Ch, Direct. The level is consistent with what you find on the sub's level. |
You're right. I just redid the DIRECT and STEREO measurements with speakers set to SMALL, and the DIRECT line is identical to the green plot(I've changed the previous post to add these changes).
So it seems that with speakers set to SMALL and in STEREO mode the SUB channel is seriously attenuated, yet setting the speakers to LARGE gives you full output on the SUB channel(and the LFE+MAIN feature makes no difference), to me this is backwards.
It seems to be only the STEREO mode when speakers are set to SMALL that cuts the SUB channel output. I ran a sweep with the crossover set to 120Hz and comparing both it looks like there is a subsonic filter engaged in this mode around 40Hz or so(as you suggested)
But the question is why, If you tell the receiver your mains are small and you have a sub, why is it cutting off the sub channel like this ONLY in stereo mode, really doesn't make sense
cheers
