Wilson MAXX musicallity and sound

Fpooyandeh- have you tried a source other than the Accuphase DP80L/DC81L, and as Flkin points out,do you have any vibration control under you components?

Dcstep- Read your Sumiko Master Set review, but I don't see how you can get good imaging with that huge cabinet between your speakers and a reflective table directly in front of your left speaker.

Dave- Yes, I saw Guidocorona's comments, and I'm sure you're both happy, but I'd love to see before and after a Sumiko Master Set room measurements taken from the listening position.

"I wonder how we'd measure the intermodulation distortion at the listening position, do you have any ideas? This is about way more than frequency response."

Dave- Forget ID measurements, just try to borrow a TacT RCS unit which will measure frequency, pulse response and allow you to EQ the system. They also have a feature call
XTC(see: http://www.ambiophonics.org/Ambiophiles.htm), which should work wonders on a set up like yours.

Dave-

I'm not putting all my focus on EQ. First, I want to know
what the frequency and pulse response look like, and use that info along with listening to position the speakers before applying any room correction.

With your rear ported speakers a foot out from the wall behind them, I doubt you're getting flat bass response.

Dave-

Once again it would be interesting to see the frequency response of your Sumiko Master Set placement measured at your listening position.

With your rear ported speakers a foot off the back wall, I'm
sure moving your speakers fractions of inches will excite room nodes. The manual for your speakers(http://www.sumikoaudio.net/va/manuals/BeethovenManual.pdf) makes this very clear.

Using the TacT system, I have flat bass response down to 20hz using no boost. Speakers are placed to optimize imaging. I have digital EQ and XTC available, so I don't have to suffer with poor recordings.

Dave-

You have no idea how the TacT system works.

You have no idea if my biamp'd system is suffering from IMD, comb filtering or any other artifacts, you've never hear it.

Glad you happy with your sytem, but I'm always amazed that people who claim big improves in their systems, refuse to take any measurement to verify what they're hearing.

Aloha