Originally Posted by toddct
Well that is a little..............ARChaic!
Great information, thanks beast! Quick question, could you run audy like normal (with no miniDSP filters applied, natural room FR), measure with REW, apply miniDSP filters, measure with REW, rinse and repeat until you are looking for the FR you want? Does that make sense? If so, what's the downside?
Absolutely and that particular way I would recommend first as a matter of fact, provided your natural room FR is decent enough that audyssey won't have to correct major issues. If you are +/- 7 or 8dB in the bass region with no correction, perhaps even +/- 10dB, I would likely just let audyssey do its thing first, then come in and apply your own (modest) filters, house curves, LT's, etc. It's easy to see what filters are generally being applied by audyssey if you measure before and after graphs with REW which is easy enough. If you see audyssey boosting some area what appears to be 7-8dB, i'd be careful overlaying much more boost inside your mini than that... maybe even start in the minidsp with cuts only, see how it sounds, then apply VERY modest boosts to any remaining problem areas.
As a rule, I actually don't recommend boosts in general as they all as a product of their design will eat into your headroom. But, and that's a BIG but, some sub systems around here have so much headroom, you've got plenty enough leeway to get away with it. Take my skhorn for example, who's native response is a rolloff from upper bass all the way down. It has such insane amounts of headroom up top that I simply apply a low shelf to bring up the lower bass to flat with the upper bass, so it is a flat response without taking into account any room gain. It is always good practice to start tuning a system with a sub that measures as flat as possible anechoically, just as almost all commercial and ID subs are already tuned. DIY builds for sealed subs need an LT to extend way down to single digits, where ported subs tend to be flatter to their tune as a product of their design. The skhorn is a different animal alltogether so it needs some different initial love just to get started.... Anyways. Just thought I'd share some additional thoughts.