AVS Forum Special Member
Join Date: Aug 2002
Location: Aurora, IL, USA
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I can't really say about the artifacts you're asking me about; quite honestly, I'm unsure what the "sound" of those artifacts are.
Here's what I can describe: when the TEQ was complete with the optimization the sound was neutral, no real "sound" per-se. Now at that point, I didn't particularly care for the lack of bass- however from the midbass-up I didn't notice anything out of the ordinary. The sound was smooth, uneventful-really.
After Dirac the Datasat sounded very class-A like. Not to a point of sounding distorted like tube gear (that noticeably warm sound) but like a slightly softened version of what I heard with the TEQ- I attributed that more to the Datasat vs. ADA sound differences (DACs probably).
I hope you can glean what you're after from that info. If you can perhaps ask me some leading questions, I may be able to provide better info.
Roger: I'll generally keep the pink noise live under slow response (keeps a continuous average of the RTA rolling) Try to cut only, as much as possible, low Q , and I generally try to leave everything above 1.5k alone if I can. I don't mind trying to be aggressive with bass, but as the frequency increases I try to do as little as possible. Main L,R speakers I'll try to leave alone completely ,and if the Center channel is not an identical speaker- then I'm more inclined to EQ to make the FR match as closely as possible.
I use the 1/48th octave display to show me as much info as possible, by adjusting to 1/24 or even 1/12 I'll get a shot of what the trend in FR is.
As far as EQ is concerned, I'd say I work like this: EQ as absolutely as little as possible the L,R mains (have to be of high quality with good response to begin with), EQ center to match (if necessary), EQ surrounds to match as much as possible. Subs- DSP as much as possible to make it right. I'll get the response as flat as I can first, then adjust level to blend with the mains.
I tend to listen to music mostly to get the bass level right (Rob Wasserman Duets, among others). When I set Compression/Limiters for subs I'll use "the attack on hometree" scene in Avatar because of the severe amount of energy below 20hz in that scene (the ADA allows me to have only the subs active).