Bi amping Horz / Vert / Parallel / Series ????

I would think using one amp per speaker with one channel for highs and the other for lows would be the way to go. As opposed to one amp driving both lows and the other both the highs. The reasons beings, firstly aside from having monoblocks as a byproduct, is each amp won't have as much draw on the bass, which is where the power is needed and problems creep in. One amp with both its channels doing the bass will be seeing more work at peak power points which could push it to its limits than the former way. And in the former way, I don't think the highs will be messed up if one channel is drawing alot of current for the bass part. I could be wrong. Shouldn't be too hard to experiment though.

Alb, I own Proac Tab 50 Sigs too, and ran them with an Electrocompaniet ECI-3 integrated last year. Nice combo. I've mostly run my speakers biwired, and have never experimented with using two amps. Let us know what works out for you.

Ezmeralda, that is vertical biamping you're describing isn't it? I know there are many threads on this subject, but I get confused now and then. I have read many success stories using the method you describe.

I'm assuming these are stereo amps...Go with one amp on each speaker. You can place the amps as close to the speakers as you want. I ran stereo amps like this on my Magnepan 3.3rs. In the case of the Magnepans (4 ohm impedence) I could not bridge the amps & drive the resulting 2 ohm load. So I went with this "vertical bi-amp" mode. The only reason you would want to run "horizontal bi-amp" mode is if you had 2 different amps - like a tube amp on the tweeters & solid state on the woofers.
You should try to have both of these amps biased by a tech.-it's important in this installation to have them as closely matched as possible.

Daniel

Ya, that's vertical, like daniel also said. They mess me up too, have to stop and think.