How about this - BEHRINGER FBQ2496 F.D.P.

[sabrewulf]

This www.behringer.com/FBQ2496/index.cfm?lang=ENG seems like quite a bit more product for an extra $50.00.
over the $99 DSP1124P. But what would it benefit? 40 vs 24 bands, faster response time (>0.2 sec), higher sampling rate
96kHz vs 46kHz. how would these increases benefit the IB application over the 1124? I have yet to purchase one and am planing to do so soon. (haven't been in a hurry cause my rig sounds so sweet as is) excited to see what the the difference will be when fully calibrated. If anyone has this unit
or someone can please explain the above, I would be grateful. Thanks oh, and great site upgrade Thomas.

[ThomasW]

Unless you want more filters there's little need to buy the more expensive unit to EQ a subwoofer.

[carpenter]

Hey Thomas,

What about the difference in sampling rate? I can hear the insertion of my QSC DSP-30 and it's bothersome. I always wondered if the sampling rate were higher would the unit sound better...

96K vs. 48K. Humph, seems like quite an improvement.

I haven't a clue what this unit sounds like, but I may give it a try.

John

[ThomasW]

I can hear the insertion of my QSC DSP-30 and it's bothersome

When it's EQing a subwoofer?

I've owned the Behringer DSP1100. I currently own a DSP1124P, a FBQ2496, a DEQ2496 and a pair of Symetrix 551 analog parametric EQ's. When Eqing a sub I'm at a loss to hear an audible difference between any of these. There's an obvious difference when EQing my main speakers.

[carpenter]

Point well taken, Thomas.

Here's my situation:

I felt prompted to time align my woofer section on a two-way I'm developing. It's signal came in ahead of the 150hz tractrix horn that drives the top-end (250 to 20K). The tractrix is about 30 inches long. The DSP-30 (a decent pro-audio unit) was inserted as an experiment to see how much affect time delay would have on the system.

I was hoping for very little...

Turns out the ear is sensitive to time alignment (at least mine are) and I appreciated the more exactness of the crossover point (250hz). I noticed less slur in the male vocals. What I didn't appreciate was the lack of sparkle in the bass driver. Yes, I do think there's a bit of shimmer in a bass driver. That's why I don't like the sound of a folded horn; you can't hear the nuance in the bass driver.

John

[ThomasW]

Well you're in the classic catch-22.

Though I lack the knowledge to create such, I know it's possible to time align short distances using analog all-pass networks. I'm not sure if they'd have a similar detrimental effect on SQ.

[carpenter]

A forth order x-over at 250hz offers incidental group delay in the bass. I discovered this using the DSP-30. Those little graphs in their software hold valuable tid-bits of information.

Crossing a JBL 2446 @ 250 hz is a bit of a no-no, but the sound is terrific with this horn. A 4th order network will be mandatory for commercial endeavors--not to mention an L-pad. Ha.

John