Originally Posted by dRwOOD73
As a noob (to the AVS site anyway), I'm almost afraid to ask this question.. but what the hey.. what kind of signal processing did you have to deploy to accomplish such a flat response?? EQ, DSP, feedback destroyer?? Or all the above??
I've been looking into equalizers on the net/ craigs list to see if I can find a deal for my futuere HT.. it will probably be more for lower frequency duties, so I don't want to go overboard.. anyway, you should have more success taming that pesky 25hz in your new room..
I have 16 channels of DSP:
1 BFD (2-ch)
1 DEQ (2-ch)
1 DCX (6-ch)
1 iTech (2-ch)
2 XTI (2-ch)
For a total of 16.
Note: All my subwoofers are sealed. My room has acoustical treatments and I have many subs, so that goes a long ways to smoothing the response all by itself.
So I have 16 HPF/LPF's, 12 phase, 12 delays, and somewhere around ~300 EQ filters available (I don't use most of them), most of those are parametric, roughly 20 are dynamic.
However, because of how I have them and the amps connected (stereo-bass in series) that is reduced down to 6x2 i.e 10 discrete and 1x2 coupled.
But of those 12, only 10 DSP channels are actually used (as of 2013).
To make that 2012-graph, I only had 4 DSP channels activated, of the 12.
2 on 4 mid-woofers, and 2 on 4 sub-woofers.
The other 5 subwoofers had no EQ applied.
But all 9 subs and 4 mid-woofs had overlapping XO's applied (FYI).
My BFD and DEQ are in pass-thru mode, I only use them for XLR conversion and continuous graphical RTA display.
So they aren't doing anything to the signal, FYI.
The DCX and Crowns do all the heavy work.
Of those 4 DSP channels, I used pretty much all of the filters available (~24) for the bass region (mostly) from 20hz and above (all the way to 700hz).
I didn't have to use that many filters, but the capacity was there, so I thought I'd put them to use.