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DEQX - TACT - QOL - Thoughts on these?

My two main setup both involve bi-amping with external active crossovers. My first set is for a Sander sound 10b electro static speaker and my second speaker is a pair of celestion SL6000. Both use different active crossovers, the Sander sound 10b uses the Behringer 2496 processor for this task.

Since both my setup already goes through this digital crossover layer, I'm exploring if I can optimize the sound more in this process.

I've been hearing/seeing good things around digital processors such as DEQX, TACT and QOL. They seem to have different focus and different approach to optimizing the sound, but I am unclear as to where these overlap with each other and my existing active cross over and preamp even.

If anyone has insights on these, please share your experience.

Inquiring minds want to know...

Gerald
geraldedison
bhobba's avatar
bhobba
303 posts
 
I would like to present a dissenting view.

I have heard DEQX systems on a few occasions - ho hum. I am looking to hold a GTG down the line comparing it to a SOTA passive - the reports I hear is the passive MURDERS it - but we will see.

I have a QOL and nearly everyone I demoed it to agrees it makes a significant and positive difference. I cant live without one these days.

Thanks
Bill
paulfolbrecht
603 posts
 
One thing that's for sure is that it is highly possible - perhaps even likely - to have a DEQX-based system sound terrible, in multiple ways. Measurement and using the calibration software correctly are everything.
stereo_phile's avatar
stereo_phile
32 posts
 
I second Paulfolbrecht on DEQX HDP-4 unit as I have one. I tried TACT 2.2 XP which was very limited, no linear power supply, and buggy. Tried Accuphase xover, Marchand XM44, and even designed my own passive xovers. None of these even comes close to what DEQX HDP-4 can do. It measures and correct each speaker driver component in a multi way active system. Then you can specify any xover frequency points and slopes from 6db/oct to 300db/oct linear phase or choose Butterworth or Linkwitz-Riley. It can then time align each driver and correct for room response. The SQ has no trace of any digital signature in the resulting analog output and results are just phenomenal. The problem is most people don't know how to use all of its features correctly.
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