Quote:
brucek wrote:
 That's certainly not how I would do it.
I would run the Audyssey first and let it take its best shot.
Then I would clean up with EQ....
brucek |
I don't think you can make a blanket statement like that as it depends on what your raw response is and what your goals are. IMO there are 2 good reasons to run the EQ first (both of which apply in my case).
1) If you have some particularly savage peaks then you will almost certainly get a better response from audyssey if you tame them with an external EQ device first as Audyssey has limited filter resolution and it can only cut so far. Therefore it makes perfect sense to remove such peaks freeing up it's horsepower to focus on other issues more effectively.
2) if you want to implement a house curve; Audyssey is designed to deliver a reference curve and there is nothing you can do about it. If you EQ flat --> audyssey --> EQ house curve then you can have audyssey do it's thing as well as designing your own house curve.
I also find that audyssey can do some induce some odd shapes to the response low down, I've seen some curious cuts around 18-20Hz that exacerbate the hump in the response around the tuning frequency. By EQing flat you can avoid this sort of issue.
What I would say is that you need to understand your room response before you do this, you can't just take 1 reading and then EQ against it. Instead you ideally need to take readings from the same positions as you give to audyssey then EQ the averaged result. In practice you may find you don't need to take all 8 readings, so in my case it is sufficient to take readings across 3 positions & I only use the BFD below about 60Hz as the room interactions become more complex above that point and I'm wondering into mains territory which I leave to audyssey. Whereas <60Hz my response is dominated by a slight hump around the tuning frequency (12Hz), a big big peak at the room length mode (which the sofa sits across so response is v v similar in all 3 seating positions) at 37Hz and a variety of responses at the room width mode around 50-55Hz. In reality I therefore EQ flat through a combination of a higher subsonic filter + BFD cuts, then run audyssey (and it demonstrates that it understood my intentions by performing measurable changes about ~55Hz or so) and then re-EQing (slightly lower subsonic filter + slightly smaller cuts).
Cheers
Matt