Audyssey with multiple, different size subs. - Page 2

You can use it as a "glorified set of tone controls" just like they show on their website:





Craig

FYI, by comparison to the "Ultragraph pro FBQ-3102", the Anti-Mode, 8033S II, has 32 filters between 5-250Hz vs the Behringer which has twelve sliders between 20 - 250Hz.

A few posts ago, I listed 3 measurement systems. Measurements are the *only* tools you can use to optimize a multi-subwoofer system. Anyone who tries to predict your response or to suggest optimal subwoofer locations is, at best, guessing. Got yourself some measurement gear and learn how to use it. That is the *only* viable answer.

Short of that, you can only depend on automated Room Correction systems which might work very well... or... maybe not. Myself, I use Audyssey XT32, but I always check the results afterwards with measurements. I prefer to "Trust, but verify." Thank you Ronald Reagan!

Craig
Edited by craig john - 12/6/12 at 6:05pm

I'm going tag out and let better qualified give their opinion. The best I can do is encourage adding an EQ box like an Anti-Mode, putting together a room analyzer package and doing the sub crawl on the floor to find the best placement locations. Other than that it's time for room treatments as it sounds like your bass is being killed by the acoustics (geometry) of the room.

The Audyssey mics are batch calibrated with a generic calibration file that is proprietary to Audyssey and pre-loaded in the Audyssey software. Without the calibration file, the mic is pretty useless for measurements using any other system. I suppose you could send it out to one of the microphone calibration companies. They could generate a cal file for it which you could load into some other measurement system, but that seems like overkill for a cheap, $3 mic.

OmniMic and XTZ come with a pre-calibrated mic, and the associated calibration file is pre-loaded into their software. That is a big part of what makes them "Plug 'N Play". REW has a method to load a calibration file for any mic, assuming the calibration file is known and available. However, the steepest part of the learning curve for REW is getting the appropriate cal file, figuring out how to load the cal file into the program and verifying it's performance.

Craig

This was the best deal I found on a calibrated microphone.

When you receive the microphone, attached is a small serial number. The buyer logs onto their Dayton's website, enters the microphone's serial number and you download and save the calibrations figures for entry when calibrating your EQ program.

As to learning REW, that's a whole nuther story.

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Edited by BeeMan458 - 12/6/12 at 7:40pm

At least now you know how not to place them. Don't feel bad, probably the most common error when placing subs is to do it as you did. But low frequency sound waves and visual symmetry don't mix. For starters I'd put two in the front corners, aimed at the corners, the other two on each side wall, halfway back in the room, also aimed at the walls, from six to twelve inches away. Which will work better up front versus on the sidewalls is a crapshoot not knowing the frequency response of either.

I love that pic. I'm gonna get me a graphic EQ and instead of the smiley face curve, I'm gonna have the "McKayla is not impressed" face curve.

Yes, I just use my AVR's mic with TrueRTA software.