converting stereo power amps to mono

As a follow-up to my previous post, I took a look at some front and rear photos of the Sonance 260x3, and I see no bridge-mode switch, or any other indication that it is bridgeable.

Regards,
-- Al

Almarg,
Did you mean feed the same signal (mono) to each channel of a stereo amp? If so, you are correct that the output between the 2 hots will be essentially zero, showing only the channel imbalance....which should be inaudible.
If, however you feed a stereo amp a stereo signal THAN go from hot 2 hot, you will get an output. Back at the 'dawn' of multichannel....QS / SQ matrix and such, I would connect a pair of speakers normally as fronts, and another pair, from hot to hot.....put 'em in the back of the room and instant ambiance. No fine tuning possible, but as proof of principle, it worked. I think that was the principle behind the original 'dyanquad'....the speaker adaptor they sold.

Hi Magfan -- Yes, I was referring to feeding a single channel signal identically into both channels of the amp, because that appears to be what the op was asking. I think he was envisioning using two stereo amps, one per channel in bridged mono mode, to get greater power per channel. My basic point was that you can't do that unless the amp is designed for bridging, which would mean that it is capable of being set to invert phase on one channel.

I do recall the technique you are referring to. I think the adapter you are referring to was a David Hafler thing, and the technique was generally attributed to him. I had no experience with it, though.

Regards,
-- Al

In every case where I have tried two lesser quality amps as opposed to one higher quality amp, the single, better quality amp has outperformed the pair. I would recommend finding an outstanding stereo amp. Get one with vastly higher power, and the presentation will radically change for he better.