Digital room correction, any recommendations?

Good ideas, Classicjazz.

1. Let me suggest two options for measurement:
RoomEQ Wizard (freeware) but you must add SLM or mic/preamp
XTZ (not free) but includes all necessary hardware/software

2. Good sources for room treatment materials:
www.realtraps.com
www.gikacoustics.com
www.atsacoustics.com
For DIY information:
www.sensiblesoundsolutions.com
http://forum.studiotips.com/

3. Audyssey works well but even with the Pro version, there is limited control. If you are OK with point-and-shoot, Audyssey is the way to go. Also, JBL and KRK have 2 channel devices which, although different, work similarly.
TacT, Trinnov and JBL Synthesis are much more capable and much more complex.

Lyngdorf Room Perfect but it is not cheap ... I think this is similar or same as the technology licensed to the aforementioned KRK.

Lyngdorf is reported to be easy to use. But it requires A/D and then D/A conversion between preamp and amp, and I don't want to do that. I want to do the correction before conversion to the analog signal.

What about the older P1A and P3 processor & DAC from Perpetual Technologies? Would they work in your situation? I see there are a few available now on A'gon.

1. The PT units are simply not supported any more and had limited applications. (I have a pair if anyone wants them.)
2. All the MCH add-ons will require A/D/A conversions as there is no standard consumer MCH digital communications link.
3. The KRK ERGO is, indeed, based on Lyngdorf and it will accept an S/PDIF input.

Kal