Is DEQX a game changer?


Just read a bit and it sure sounds interesting. Does it sound like the best way to upgrade speakers?
ptss
Bruce, the only thing I can add at this point to the good responses that have been provided to your questions is to mention that in contrast to speaker correction, DEQX allows you to perform room correction adjustments on the fly, in real time, by inserting and/or dragging adjustment points on the computer screen while you are looking at the measured frequency response plots on that screen and while you are listening. Which is a neat and I believe pretty much unique feature.

You can also click a button which inverts the room correction curve, then insert and/or drag correction points so that the inverted curve lines up with the most significant peaks and dips in the measured frequency response ("most significant" based on the combination of magnitude and width), then re-invert the correction curve and assess it sonically. Also a neat feature.

In doing that you would of course not want to risk messing up the real .mzd file that is in use. The manual describes a procedure for creating a duplicate file that can be played with, but it seems unnecessarily roundabout. I've found that a simpler procedure is to copy the .mzd file to a different folder, then change its name and copy it back to the original folder. Then double-click its icon to open it with the DEQX software, or else open the DEQX software first and use "file/open."

When you're done you can then re-upload the original file to the DEQX, if you want to.

Best,
-- Al
Just wanted to say that I have used the technique of building a "box" of acoustic panels around a speaker for in room measurements. I have a bunch of Realtraps HF (not the standard kind) I use for this, mostly because they have metal frames and so stay upright and don't mind being transported from place to place unlike regular resin hardened panels which are not fully wrapped on the back side with fabric.
There is a much simpler way to create a duplicate or modified file: open your original file as normal in the software then immediately click 'save as' from 'File' on the menu bar (top LH corner)

When the smaller window appears, simply change the file name and save. It will then create another identical .mzd file in all but name into the same root folder as the original

Provided this file remains open while you modify or add anything, any further mods or saves will apply to this, not the original. My 'working' .mzd file was built up by multiple saves this way and eventually I went back and deleted all the older, no longer needed versions
05-20-15: Bifwynne
...... For example, any thoughts if I were to invest in a pair of Vandies which start out time aligned?

Hi Bifwynne, if you haven't already, you might want to read the following Vandersteen Seven loudspeaker review in the Speaker forum. Looks like a really good review by a user (not a reviewer)

http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1431987937&&&/Vandersteen-Seven-Review
Thanks Bombaywalla. The Vandy 7s are a non-starter for me. Too da*n expensive. Also, my basement/sound room isn't big enough ... not even for the 5As. The Quatro Wood CTs might be an option.

Drewan thinks that the DEQX already time aligned my speakers. If so, any marginal improvement might be theoretical.

My guess is that it might come down to the quality of the drivers. And Paradigm's Signature line uses very good quality innards. The tweeter uses a Be dome and the mid uses a Co/Al alloy cone. Both drivers are quick on the draw.

I might try and arrange a trip this Summer to Verona and check out the Quatros at Johnny's place. He is also an ARC dealer and might be able to match up an ARC Ref amp with the Vandies.

In the meantime, I'm thinking about the sound box idea that Al and Acousticfrontiers mentioned above. It might enable Larry, the DEQXPert, to do a better job with time aligning my speakers.

Btw, you referred to "time alignment" and "time coherence." What is the difference between the two terms?