Originally Posted by stefanop
Ok, in an SDP75 can I perform a calibration like in a normal processor? Mic + cable + analysis in different location, all automated? with M2 as LCR too? Or do I have to enter specific and, to me unknown, data for X-Over, roll-off....
Not everything is automated. Curt Hoyt from Trinnov and I fine tuned the crossovers per speaker, and blend with subwoofers per speaker. Not too hard to do once you understand how it works, but not anything like Audyssey or ARC either. However, the flexibility of this thing is off the charts.
I was able to set crossovers at 50 hz for the L&R M2s (based on the measurements), 80 hz for the center M2 (again, based on measurements), then blend those with front and rear subs. I set the LSR708i rear and side surrounds to 80 hz, then the ceiling Revel C763Ls to 140 hz. Here's where it gets cool: since setting a crossover at 140 hz means that the bass sent to the subwoofer could possibly be localized to the subs. So here is what we did - we sent everything below 140 hz for the front height speakers to the front subs, and everything below 140 hz for the rear heights to the rear subs. That way the directionality of the height information is maintained
You can also weigh the various measurements in the room and save presets that favor particular seating positions. For example, you can set a preset that favors the main listening position, or just the front row, or the rear row, or both - you get the idea. You can also examine each measurement and eliminate those that could possibly throw the averaqing way off. With 29 presets, you can cover just about every scenario you can imagine.
But the rest of it - mic, cable, analysis in multiple locations - yes, it's pretty much like other processors out there. It sets delays, distances, etc all automatically. And the EQ itself is all automated, except for the crossover settings I mentioned. You also need to "draw" your room in the initial setup, but that's easy to do and fun
I just posted this about it in my speaker shootout thread:
As Dr. Toole says, it's not nearly as simple as running something like ARC or Audyssey - you really have to know what you're doing.
On the positive side, it's really encouraging to me that the SDP75 mic WILL be available for those who DO know what they are doing to perform their own calibrations. That said, while the SDP75 is a tweaker's dream, it's certainly not plug and play if you want to get the most out of it. When I did my setup, I was able to call on Curt Hoyt of Trinnov to help walk me through the various options over the phone. The best part about it was that he could log in to my SDP75 from off site and "drive" whenever he needed to, and I could watch his moves in real time. Curt was patient, thorough, and really helped me understand everything that was going on.
I'm going to write much more about the SDP75 here soon, probably in the Synthesis thread (I will post a link here). Let me just get this out of the way - for anyone considering getting one of these and attempting their own calibration, the $150 per hour Curt charges for off-site calibration help is absolutely worth it.