Behringer DEQ2496

[Liver]

Quote:

Originally Posted by flecom i love my DEQ2496... i am planning on modifying it quite a bit sooner or later, swap out the AKM dac for a newer AKM dac with better specs and dosent require output caps i eq my headphones first with the ECM8000 measurement mic and then tweak it a bit when its done... then make a different profile for each one of my headphones

how did you EQ your headphones with the ECM8000? Er, I mean exactly how did you do that?

 

[kramer5150]

edit... oops...NM

 

[jimholt]

Quote:

Originally Posted by thomaspf One thing to remember when using the EQ2496 is clipping. If you only attenuate certain frequencies you will be fine. If you raise frequencies you might clip the signal and you might put a lot of strain on your amp. An acoustic 0 in your room can not be corrected with an equalizer but you amp will still run at its limits. In my room besides some isolated room modes the biggest problem turned out to be the greatly varying reverb times between low and high frequencies. I found 0.4s almost down to 500Hz but then 1.2s at 30Hz. Initially I made the mistake to measure a steady state signal like pink noise which at the Microphne builds up to be the sum of the direct arrival and the reverberant field. When equalizing this I had to turn the bass down quite a bit but the tonal balance was not right and the whole system sounded slow. I bought some Tube Traps and 6" Bass trap panels and that has cearly made a big diferene to the positive. I am still remeasuring and can't comment on the final outcome yet but one key point is to optimize the equalization for the direct arrival only. Unfortunately this turns out to be rather tricky and I am still struggling with the details. There are some good articles on this topic on REG's web site www.regonaudio.com and once in a while this topic gets discussed in great technical detail on his forum. Cheers Thomas

There was no clipping just beautiful sound to die for. Has i wrote earlier a big bass hump was removed and some high peaks lowered. Switching back to source which can be done from the unit resulted in the music sounding compressed and shut in. Jim.

 

[Steve999]

I use a DEQ2496 in my headphone rig. I love it. I start with third-party measurements of headphone frequency response as a baseline and tweak by ear over the course of several weeks until I am satsified.

 

[thomaspf]

Quote:

I use a DEQ2496 in my headphone rig. I love it. I start with third-party measurements of headphone frequency response as a baseline and tweak by ear over the course of several weeks until I am satsified.

What is your target frequency response for a headhpone.

This is very different from a free field speaker in front of you and the response is not supposed to be flat.

When you go by ear what do you compare it to?

Cheers

Thomas

 

[Steve999]

I check the response graphs at headroom, and I have a friend who has taken close measurements of a couple of headphones I have. I use those as a baseline, and try to make conservative adjustments toward a flat response.

As you allude to, frequency response measurements of headphones are fraught with peril. So after I get my baseline I adjust by ear so that the vast majority of recordings sound pleasing to me. It's not too scientific but I learn a lot and really enjoy the sound I am getting. It usually takes some number of weeks of trial and error until I don't worry about it any more and I'm fully satisfied with the sound.

Quote:

Originally Posted by thomaspf What is your target frequency response for a headhpone. This is very different from a free field speaker in front of you and the response is not supposed to be flat. When you go by ear what do you compare it to? Cheers Thomas