Axiom Home Page Forums General Discussion Technical Questions What to do with EP600 for Audyssey calibration?

The timing is frequency-dependent. You can do a time domain analysis and use the second moment about the mean. Personally, I skipped all that and did it by ear giving me ample time to consume my beer .

Terz,

I have always added six feet to my sub's actual distance, but I'll give three feet a try as Jake suggests (he's the sub guru). I originally recomended that you leave it as is because if you go making several changes at once, you'll end up chasing your tale. Make small changes, and only one at a time.

I've been playing around with the manual EQ set up and think I have it set up about as good as it can be, but I've been tweaking things slowly, and keeping track of what the sonic differences have been.

If this is all that's holding them back, I don't see why it hasn't made it into a receiver yet, especially at the higher end. And you'd think they'd make dedicated hardware specifically for that task. I admit I know nothing, but to me, it seems like it has to be that the software isn't mature enough, not the hardware. Otherwise, I don't see how we couldn't see very advanced room correction within 5 years. Assuming the software needs the fastest processor there is currently, there's no way it couldn't be cheap enough to implement in that timeframe.

Correcting room acoustical issues electronically is a very complex undertaking requiring sophisticated software and dedicated fast hardware . Doing proper measurements alone takes a massive amount of processing time because it involves running iterations of sweeps and adjustments. More calculations are required for the bass frequencies because of the nature of long wavelengths in the room.

The few programs that come close to doing it properly are the Audessey PRO which is very expensive and can be connected to a PC and takes a while to run; or Room EW which is free software used with a notebook. All the Audessey eq programs liscenced for receivers are ineffectual watered down versions with simplified algorythms designed to run just a few iterations, make computations then recommendations made on simplyfing assumptions. Those simplified rules rarely correspond with your unique room acoustical requirements.

That's why I always say that based on current technology in receivers, there is no way such a program can do as good a job as someone with a RS metre and a measurement tape. Perhaps one day they will as the technology gets better and the cost of processing falls but don't hold your breath anytime soon.

Sorry to bother. What is a bypass switch? My sub doesn't have the bypass switch. It only have two knobs, the gain control and crossover freq. control. Right now I have my sub gain knob set at 12 o'clock and sub crossover control know all the way up to 130Hz. Sub crossover control know all the way is the same as the bypass switch ON.

It is the crossover switch. It's highest setting is "bypass".

Thanks Eflardeau. Got it. This I will leave my crossover to the highest setting.