Originally Posted by Sdiver2489
Just curious if anyone has found that calibrating with the sub PEQ before running Audyssey netted much better results than just Audyssey.
If you have some response peaks, due to room position/modes, then using the PEQ to reduce them could help Audyssey to provide a better overall correction.
I base this on my own experience, not with in-built SVS PEQ - but using a MiniDSP with my SB2000. Let me try to explain:-
I found a position within my room that gives a generally flat, extended response from the SB2000, apart from two peaks at approx 45Hz and 55Hz (they actually merge and raise the level between the peaks).
All the other possible positions give large dips and peaks.
I initially ran Audyssey (XT32) on its own. When I measured the corrected response using my calibrated mic and REW it clearly showed that Audyssey only corrected the response ABOVE 45Hz, it totally ignored the frequencies below 45Hz. I believe the two peaks caused Audyssey to calculate the low frequency roll-off as being at 45Hz. It boosted the output above 55Hz in an attempt to produce a smooth response.
Needless to say the results were awful. No bottom end.
I then connected up the MiniDSP and used some PEQ to reduce the two troublesome peaks.
Audyssey was run from scratch again. What a difference. The sub now plays almost flat from 15Hz to 100Hz. Audyssey is now able to interpret the frequency response and apply some useful correction.
So if you've got some nasty peaks, then I would use the PEQ - but don't try to fill in severe dips, as that will just soak up amplifier power.
Independent measurements are required to determine if PEQ is appropriate, but I think it can help.