Bi-amp VS Mono Blocks

[stevenscoffee]

Hello everyone, 
I have a question regarding Bi-amping.

I have just acquired 2 generation two XPA-2 amps and was wondering how I should connect them to my Martin Logan 60xts using my UMC-200.

Should i run them as mono blocks, one for the right and one for the left or one the woofer and one for the highs and mids.
Or should I run 1 for the right using half the amp for the highs and mids and the other half for the woofers and one amp for the left.

Any input would be awesome!


Thank you

[jhob]

I believe those XPA-2’s are only supposed to be used in monoblock mode with 8ohm speakers. Your speakers are 4ohms. I would just biwire them.

[novisnick]

The XPA-2 should NEVER be used as a monoblock unless the speaker is 8 ohms!

Its not desifor any other load as a monoblock!

Have fun but don’t destroy your gear my friend.

Edit;  link to page with manual for your amp

www.manualslib.com/manual/600348/Emotiva-Gen-2-Xpa-2.html

[repeetavx]

Passive Verticle bi-amping is my choice.

[leonski]

Depends.....and Depends.

I'm using passive Horizontal right now, with plans for mods in the works.

If your pre is located TOO far away, you might end up with standard length speaker wires. And the amps in a central location, but NOT STACKED.
I have one stereo amp behind EACH speaker with very short speaker leads, about 3 feet or so to the speaker.

The problem with Biamp of the XTS60 is the high crossover point. The power breakdown at crossover is probely 70:30 with 70 being below the crossover. So, you'll run the bass amp out of juice well before the HF part.

The BEST thing to do would be to gutt the speaker crossover and connect direct to the amp using something like a MiniDSP between pre and main. And use amps with similar gain and appropriate power ratios. You'll MORE
than make up the difference with the higher powered XPA-2 since the amps will not have to do anything with the out of band input.

They are also fairly high sensitivity, at around 94db which argues against GOBS of power. Using 4 channels of a 5 channel amp might also work, be compact and electrically sane.