2 REL Strata Subs and Mono amps

@ Vladimir

Yes, I've just checked the Gibraltar G1 manual, and they indeed give on the p. 12 the same advice Al gave to me above (if power amp is balanced ie differential).

What they don't say is what to do in case of having two subs (stereo sub system) and balanced amplifier, as I have... Following strictly their user guide (bottom half of the p. 12), an average audiophile in my position will normally connect even fully balanced amp with two subs, the way REL suggests, and probably damage the amp.

Good that you say that, I thought about it but at the end didn't write anything. I used my REL Storms with mono and stereo amps at different times. The example on pag. 12 (top) of the REL manual is of course for a stereo amplifier; for mono amplifiers, use the pag. 12 (bottom) example and just imagine the gray amplifier divided by a vertical line through the center, so that you have two separate mono amplifiers, a left one and a right one. The potential grounding problem still stands, so it's better to ask Krell or get your dealer to do it.

Zormi, I forgot to add that you should copy the grounding scheme of the pag. 12 (top) example for the (bottom) example, of course. I think the chassis screw grounding will work for Krells, but ask them first just to make sure.

Very insightful thread, for me at least.. Grateful to all of you.

Happy New Year to all, lots of music!

I contacted Audio Research only to be told that someone had already called to get the info. The bottom line is, use the 4 ohm tap as signal and chassis ground are isolated by 10ohms. That should be sufficient. That's the info I received from ARC.