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Behringer DEQ2496 HELP

After reading the raves about this product, I finally bought one along with the matching microphone tonite. Put in my system, eager to try room correction. The first 2 attmepts produced some curves that I wasn't crazy about, but seemed plausioble. Now, all it does is push all the bands above 125 all the way to maximum boost, and all the bands below 125 to maximum cut. When displaying the RTA of the pink noise, there is nop more htan a 15 dB range between the highest and lowest levels on the curve (as if that were small!)Also, one of the primary reasons I bought it was for equalizing low frequency room problems, yet it suggests htat anyuthing below 100Hz not be included in the auto EQ.
Does anyone know why it is coming up with such odd equalization curves, even though it is reading the data, which doesn't look so bad? Also, how bad is the product at low frequencies?
honest1
eldartford
4,262 posts
 
I find that the auto EQ works fine for all frequencies, if "fine" means perfectly flat response 2Hz -20KHz (in my system). I have a multichannel system, and two DEQ2496, and I do the front left and right and the surrounds each channel separately. Because my room is not symetrical, and one speaker system (MG1.6 and a subwoofer) is in a corner the EQ curves are quite different. I have a single channel parametric for the center front, and, by comparison it is a big pain you know where. I do run the white noise up to 85 dB or so when I do the auto EQ. After the auto EQ is done, and while the noise is still on you can turn down the volume and see if the frequency response changes. Mine does not.
ecruz
402 posts
 
I just bought one of these and have a couple of usage questions.

When using the Auto EQ function:
-should I only use frequencies above 100hz? I ran it once going down to 20hz and it seemed to work fine. It cut most of the frequencies below 100, except 20hz which it boosted.
-should auto eq (page 2 menu) be set to fast, mid or slow?
-on the page 3 menu, what should "Max" & "Max Span" be set to?
-what setting should I use for noise gain? I set the volume pot on my pre-amp to approx my normal listening level and then set noise gain to -40, again this seemed to work okay.

I was surprised how much clearer everything sounded, especially complex music, after running the Auto Eq function.
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drubin
3,277 posts
 
With most speakers, you are better off not doing any boose ast 20Hz or 25Hz or perhaps even 33Hz. You will be asking your speakers and amp to do too much. At lower frequencies, stick mainly to cuts.
ecruz
402 posts
 
Drubin-
Good point, I didn't even think of that. I have Vandersteen 2ce's and they are suppose to go down to about 28hz.
eldartford
4,262 posts
 
Ecruz...
1. Auto EQ works fine below 80 Hz (regardless of what the manual says).
2. Don't try to get flat response any lower than what your speaker is capable of. If you do you will mostly screw up higher frequencies.
3. I use the "FAST" setting, and after things have pretty much settled out I go to MID or SLOW. However, I find that FAST doesn't actually bounce around any more than MED or SLOW. If you were trying to do auto EQ while various noisy activities were going on (perhaps during setup for a live show) the SLOW setting would help.
4. The Delta MAX, and the MAX SPAN parameters allow you to constrain how much EQ is applied. I leave these wide open so that the DEQ2496 can do the best it can.
5. I adjust the gain so that the sound (as picked up by the mic, is about 85 dB. Where this puts your system's controls depends on your system.
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