xpa-2 bridged

[repeetavx]

I've thought about what I would have done had I not started out with an XPA-2. With four XPA-100'S I would only have 720 Volt/Amps per speaker instead of the 1200 Volt/Amps per speaker that I have with the vertically biamped XPA-2s. Also the XPA-100s only have 6 output devices per channel compared to the 12 output devices for the XPA-2, which improves output impedance and damping factor.

I've also heard that bridging the XPA-2 degrades the S/N Ratio, output impedance, and damping factor. So if you want more than 300 watts per channel, you would have to buy four XPA-1s .

Or four XPR-1s!!!

I'll never do it, but I've mused about vertical biamping with XPR-2s.

Let's see:
Two XPA-2s = $1798
Four XPA-100s = $1796
Four XPA-1s = $4396
Four XPR-1s = $6796
Two XPR-2s = $3598

Actually, compared to the competition, those are great deals.

[leonski]

I'm currently running a Pair-O-Parasound A-23 of 200x2 EACH @4ohms with my Maggies. One amp sits behind each speaker. Is that vertical or horizontal? List price around 2000$. Each amp has a1000va transformer and enough PS to provide over 1.5db headroom.
I had considered 4x 1L amps but was running out of OUTLETS! At the 'Four XPA-1' level of 4400$, I could have got the 2x more powerful A21 of 400x2 @4.

[repeetavx]

If each channel drives a different set of speaker inputs, then it's vertical biamping. If your amp is bridged, then it is a bridged monoblock. If your just using one channel, then it is a monoblock.

[leonski]

NO BRIDGING……EVER. at least for ME. speakers are 4ohm to begin with.

Each stereo amp drives one speaker. one channel the bass, the other the mid/treble.

It is working out Very Well, indeed.

[zerafa]

i have each spa-2 powering a single speaker / bi-amped. i like it.

My plan is to play around with different options when i replace the UMC-1, as i have a big job to pull my cabinet out from the wall. (its not really strong enough to move with 300 lbs of amps sitting in it.) Which will be sometime this summer, one way or another.