Dirac Live right-shifted soundstage due to added delay on right channel

[pogo]

Where was the microphone connected?

 

[Sammy135]

On what basis do you claim that:

1) Pink noise does not have enough bandwidth to use for level matching, and

2) Your ears are better for level matching than a calibrated SPL meter?

Pink noise didn't work for me.

Music with dynamic frequency range constantly happening with vocal heavy helped me center the stereo image. I used a phone app, not the most accuracy, as well as a SPL meter capable of A and C weight accurate to the first decimal point - it didn't help.

Regarding ears better than spl, yeah, I think so. Closing my eyes, and dark room, I can point very accurately where the center image is. Then add or subtract trims from left or right accordingly until it was centered. Actually, it's so accurate, I wish my AVR had more granular controls over speaker trim. Lowest amount I can trim is 0.5 dB. I wish it was increments of 0.1 dB, and I can get it centered even better.

 

[Sammy135]

V3.11 has improved the issue but didn't fully resolve it. It may be an issue with the NAD C658 handling of delay compensation and Dirac v3.x

Dang, I am disappointed to hear that.

 

[Bugal1998]

Hi

It's been a few years since I had to run Dirac calibration on my NAD C658 (2.2 setup). Even after repeated attempts (re-measuring), I always end up with a right-shifted soundstage. If I change the balance to -4dB left, the soundstage returns to the center but still sounds off or out of phase.
I did some REW/Umik-1 measurements and it seems the issue isn't a level shift, but a time delay of about 0.7ms in the right channel as per the impulse response.

I've loaded the old Dirac filters (taken for different sets of speakers, and they don't have this issue but don't sound right bass-wise.

What could cause such behavior? I'm on the latest FW and Dirac version.

Thanks

Haven't read the whole thread so these items may have been shared already, but...

1) Microphone is too close to the rear wall or reflective seatbacks
2) One or more speakers too close to sidewalls
3) Clock drift between PC and audio source (Contact Dirac if the issue persists, and don't let them try to pretend they've heard of this. I had this issue and Dirac resolved it with a debugging release and supposedly intgrated it into a full release some years ago, but the issue continues to surface with regularity).

Good luck!

 

[pollock0424]

I have had this issues when I was using Dirac with miniDSP SHD. Always keep an eye on magnitude corrections and time delays once dirac calibration is done.. if something is off then it is a dead giveaway. My solution was to redo the whole calibration process. I bought an Integra DRX-8.4 recently for Dirac and DLBC and I'm less than amused by the whole dirac shindig. I wish that I had saved up that extra monies to buy a second subwoofer and tweaked the delays on the sub to minimize the phase issues at listening position. REW does a good job FWIW with measurements. Also, OCD HiFi Guy does a good job at using opensource software to get the best sound.

 

[PHD]

After two weeks w/o an official reply, Dirac closed my ticket w/o providing a solution. Nice...

Anyway, using the beta version 3.11 and measuring with the 0-deg mic position instead of the 90-deg, has improved the problem but didn't fully eliminate it... And I was actually considering getting Dirac for My Denon X4800H. That has changed of course.

 

[kyuu]

@Flak Maybe you can help the OP out?