Originally Posted by ifor
Funny how JBL isn't using a SDP-40HD in their Northridge Synthesis theater.
The SDEC inserts between the processor and the amp. Any processor and amp will do for the system. Although I would pick a very good processor and amp all the same.
If the equipment is going into the same room, I was also going to suggest looking at ATI for amp(s) as the JBL units have fans on the front of the units and are loud enough to hear them.
It's true, you can insert another processor, but you'll forego configureable Logic7 and the Phoenix Combicon (or DIN on older models) trigger set up for the amps. Of course, the unit JBL is using in the Eargle Theater is another Harman stablemate with a fancier brand name but the same pedigree: Mark Levinson instead of Lexicon or Synthesis®.
I'm pretty sure you knew that. It's not like they swapped in a McIntosh, Marantz, or something. Now that ATI owns Theta, maybe there will be better synergy there, but a Casablanca III HD would be quite a commitment, and it is a very flexible, pain-in-the-a$$ to set up.
The Synthesis® amps are
ATI-manufatured amps, built to JBL specs. Yes, they do have fans, which if the amps are stacked in a rack or a closet are essential. When there's plenty of space and ventilation, the fans never seem to come on.
For my K2 stereo pair plus S2S subs, I went to the ATI factory near here and bought two ATI 2003 amps right off the line. Two channels of each amp power the HF and LF inputs, and the third channel powers the corresponding sub. Separated from each other and with nothing on top, they run cool to slightly warm, even under hard use. They're great amps. I would not stack them.