Is DEQX a game changer?

Don't rush to dump your preamp. The DEQX is essentially transparent, so you can use them together if you like what the preamp adds to the sound of your system.

Al,

I will stay tuned. I'm very interested in your finding as I'm sure are many here.

Not to make more work for you, but I would be very interested to understand the effects of DEQX on various speakers of various designs, in a sense as a potential objective way to measure speaker distortion, perhaps on some relative scale.

Thanks for your further comments, gentlemen.

Psag, even if I do end up removing the Classe CP-60 from the system, I don't envision selling it in the foreseeable future. It's much too good a performer, IMO, to be selling it for what I suspect it would bring. (I paid $1350 for it about 6 years ago, when I believe it was something like 8 years old). So I'd keep it as a backup, or possibly use it in a second system.

But regarding keeping it in the system along with the DEQX, my instinct is generally to have as little in the signal path as necessary. Also, as you can tell from the photos in my system description, my setup can't readily accommodate both units physically. But we'll see, of course, how the sonics work out with the DEQX installed in the configuration I described.

Best regards,
-- Al

Al, for the configuration you plan on using you won't need to worry about any manual time alignment as the 3 sets of outputs won't be feeding multiple power amps or subs (which is what they are really designed for). The only graphs you will need to interpret manually will be the in-room measurements at the listening position and that's very easy

That makes your setup much simpler as the HDP-4 will automate correction to speaker drivers driven by one power amp. It will hear your speakers as a single set of frequencies with any passive crossovers included in the signal path and adjust accordingly. You won't use the active crossover facility, just speaker correction to one stereo pair and the potential for room equalisation as you see fit

At a later date you have the opportunity to try all the other features, adding more power amps, speakers without passive crossovers, maybe subs etc. As long as you always measure with the power amps and cables linked to the drivers they will be running, you can even use different brands and wattages of amps for bass-mid-treble and DEQX calibrates and adjusts accordingly. Better to stick to one brand/rating though but it does allow you to adapt the system without needing to purchase 3 new sets of power amps in one hit

Regards Andrew

Hi Guys, I have read several post, but not near all, this may have been addressed. I have no doubt that the DEQX could be a game changer, but it would require Biamping, triamping etc.
The biggest problem in any speaker is the crossover. Coils suck the life out of music. If you are willing to remove your speakers crossovers, run an amp channel on each driver, properly set up the electronic crossover, then adjust time delay and eq to your room, there is no doubt that any of us will have performance that we have only dreamed about.... assuming that the DEQX is clean and does not mess up the sound of the other electronics in the system. Unfortunately for me, this is a product out of my reach... I have found a substitute that I will be trying shortly, it is called Mini-DSP... I have purchased it. It comes in 2 to I believe up to 10 Channels... I have gutted my speakers crossovers, but have decided to do some cabinet work so it will be some time before I get it all up and running... I can't imagine the Mini DSP doing anywhere near the job of the DEQX, but it does have full electronic crossovers, full eq capabilities and full room correction software with a calibrated mic available. I'm excited to give it a try and very curious to see if anyone else has tried this inexpensive product?
Thanks, Tim