Bi-amping B&W 703's

Theoretically monoblock configuration would provide more benefit as each amps power supply is only responsible for producing one speakers bottom octaves- which are the speakers largest demand on the amp.

If you were going to go active, then stereo amps might make sense.

There is no right or wrong answer here, try for yourself- however horizontal biamping as you have descirbed has the least chance of being effective.

Vertical biamping (one amp per speaker) or mono moode on your amps is going to most likely work best. The differentiator being how your amps sound in mono mode versus stereo mode.

Keep in in mind that most amps do not have a mono mode which is what throws a twist into your question.

I dont think that horizontal biamping is worth trying, it just doesnt make any sense.

-Rob

That is briding the amps. I would try unbridged stereo operation 1 amp per speaker.

That should yield a nice improvement.

No- you would use both channels on each amp.

So you have both channels of amp 1 plugged into speaker 1. One channel on the high frequency terminals, the other on the low.

Same thing for speaker 2/ amp 2.

This is called vertical biamping and is typically adventageous because the amps power supply/toroid only needs to drive the low fequency drivers on one speaker.

Just remember to pull the jumpers off each speakers biwire terminals (high freq to low freq bridges) so you dont short out the amp.

Good luck- I really like the way the EC stuff sounds. It seems like a good match for B&W.

-Rob

Yes, you would use a y-adapter on the amp end if your pre does not have two pairs of outputs. I should have mentioned that. Sorry.

Single RCAs come off the pre- terminate into a single female y adapter that splits to dual male RCAs. Repeat on amp/speaker 2.

Radio shack sells decent y adapters. If you like this setup you could spend a little money and get a pair from Audioquest or one of the other better cable manufacturers.