selkec
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Post by selkec on Feb 25, 2010 23:01:33 GMT -5
I was wondering if anyone here bridges their xpa-2's? If so how does it sound compared to not being bridged? Also is it 1000 watts bridged into 8 ohms or 500 watts?
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Post by strindl on Feb 25, 2010 23:35:02 GMT -5
I've never tried bridging mine...but it should be 1,000 watts into an 8 ohm load bridged. It's 500 per channel in stereo mode at 4 ohms, and bridging the amp cuts the apparent impedence of the speakers attached in half. So that 8 ohm load bridged would be seen by the amp as a 4 ohm load. 500 x's 2 = 1,000.
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Post by movietunes on Feb 26, 2010 17:23:44 GMT -5
Pulled from the detail section: Power output: 250 watts RMS/ channel into 8 ohms, 500 watts RMS/ channel into 4 ohms and 1000 watts RMS bridged
I was under the impression that the 1000 watts is for a 4 ohm load, but if you have an 8 ohm speaker it would be more like 500 watts. Maybe someone with some expertise can jump in?
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selkec
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Post by selkec on Feb 26, 2010 18:51:47 GMT -5
Im pretty sure it used to say 1000 watts bridged at 8 ohms. And not to run it into 4 ohm speakers bridged. Anyways. What is the good and the bad about bridging? I read on another forum that they said bridging any amp is bad and does not sound as good. ANyone have any experience with bridging?
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ntrain42
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Post by ntrain42 on Feb 26, 2010 23:10:39 GMT -5
1000 watts at 8ohms bridged
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Post by Rodrigo on Feb 28, 2010 11:51:28 GMT -5
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Post by pmd918 on Mar 1, 2010 0:07:57 GMT -5
And the manual definitely says NOT to run the XPA-2 bridged into a 4 ohm load.
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selkec
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Post by selkec on Mar 8, 2010 1:22:04 GMT -5
So.... Would these bridged drive my RtiA9's pretty close to the xpa-1's? I heard my speakers can dip to about 6ohms. Will that screw up the amp? Anyone here have experience with bridged xpa-2's? People on the polk site or another site said not to bridge becauswe it doesnt sound as good. Im thinking 2 xpa-2's bridged for lots of power to my power hungry speakers and an xpa-3 for center and surrounds. Any thoughts from all you smart people on here?
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Post by strindl on Mar 8, 2010 1:33:09 GMT -5
So.... Would these bridged drive my RtiA9's pretty close to the xpa-1's? I heard my speakers can dip to about 6ohms. Will that screw up the amp? Anyone here have experience with bridged xpa-2's? People on the polk site or another site said not to bridge becauswe it doesnt sound as good. Im thinking 2 xpa-2's bridged for lots of power to my power hungry speakers and an xpa-3 for center and surrounds. Any thoughts from all you smart people on here? If you don't already have the XPA-2's, you'd be far better off getting a pair of XPA-1's. As I posted earlier, I have never tried my XPA-2 bridged, but the XPA-1 has a much more powerful power supply, is fully balanced and is purposely built as a single channel amp. You would also not have to worry about the resistance of your speakers being too low with the XPA-1's.
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selkec
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Post by selkec on Mar 8, 2010 9:03:12 GMT -5
Yeah I know. I was just looking to try to save a little cash somehow. I know the xpa-1's turn them into a different speaker.
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Post by emokid on Mar 10, 2010 1:39:02 GMT -5
stupid question i guess but : how do i connect the cables for bridge mode ? i checked the online manual for the xpa2 but couldnt find it . do i need to split the in signal , or just connect to any of the two in phono connectors, and how to wire the speaker ? I will be running 3 x xpa2 in bridge for my fronts and 2x upa1 for my surrounds (i know!!! but the xpa1 was out of stock untill god knows when and i want it now )
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BONK
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Post by BONK on Mar 10, 2010 9:42:09 GMT -5
If you're planning ahead , make sure that your pos. and neg. speaker wires are long enough to span the width of the xpa-2 . ......
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Post by emokid on Mar 10, 2010 10:51:27 GMT -5
If you're planning ahead , make sure that your pos. and neg. speaker wires are long enough to span the width of the xpa-2 . ...... see , told you it was a stupid question Thanks for your help ;D
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Post by movietunes on Mar 12, 2010 11:46:20 GMT -5
Emokid- Please let us know how 3 bridged xpa-2's upfront sound in your system, very curious. That's a lot of power... Good luck!
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Storm Angel
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Post by Storm Angel on Jun 4, 2014 20:36:38 GMT -5
2x XPA-2 would be OK in 4 ohm loads in you have bi-ampable speakers (not bridged). That should be able to be done with 4 ohm speakers but I am not sure you will hear a real improvement in SQ over using 1 XPA-2, perhaps a little more controlled at higher volumes perhaps (everyone's situation is different and results are different for everyone). An important thing to consider would be if a very slight (if any) improvement in sound is worth double the money for amplification. Old thread I know but an interesting topic considering I own the XPA-2 already and will probably go the monoblock route for the XPA-1's.
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Post by frenchyfranky on Jun 4, 2014 20:44:05 GMT -5
2x XPA-2 would be OK in 4 ohm loads in you have bi-ampable speakers, one amp to run both L/R mids/highs and the other amp to run the L/R low frequencies. That should be able to be done with 4 ohm speakers but I am not sure you will hear a real improvement in SQ over using 1 XPA-2, perhaps a little more controlled at higher volumes perhaps (everyone's situation is different and results are different for everyone). An important thing to consider would be if a very slight (if any) improvement in sound is worth double the money for amplification. You should try before vertical bi-amp, left high one 1ch and low on the other ch of one XPA-2 and the same for the right speaker on the other XPA-2. By this way you obtain a mono setup with two stereo amp.
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Storm Angel
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Storm Chaser / Nature Photographer.. Avid Audio enthusiast and Cycad collector.
Posts: 132
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Post by Storm Angel on Jun 4, 2014 20:45:31 GMT -5
2x XPA-2 would be OK in 4 ohm loads in you have bi-ampable speakers, one amp to run both L/R mids/highs and the other amp to run the L/R low frequencies. That should be able to be done with 4 ohm speakers but I am not sure you will hear a real improvement in SQ over using 1 XPA-2, perhaps a little more controlled at higher volumes perhaps (everyone's situation is different and results are different for everyone). An important thing to consider would be if a very slight (if any) improvement in sound is worth double the money for amplification. You should try before vertical bi-amp, left high one 1ch and low on the other ch of one XPA-2 and the same for the right speaker on the other XPA-2. By this way you obtain a mono setup with two stereo amp. I was just thinking that after I posted too.
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Post by frenchyfranky on Jun 4, 2014 20:51:07 GMT -5
Have a good time trying and listening your favorite music.
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Post by repeetavx on Jun 5, 2014 0:51:47 GMT -5
You should try before vertical bi-amp, left high one 1ch and low on the other ch of one XPA-2 and the same for the right speaker on the other XPA-2. By this way you obtain a mono setup with two stereo amp. Yup. I heard a definite improvement with vertical bi-amping. Or maybe it was the benefit of short (2 1/2 foot) speaker cables. Either way I had reduced treble glare and better bass definition.
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Post by frenchyfranky on Jun 5, 2014 10:46:48 GMT -5
You should try before vertical bi-amp, left high one 1ch and low on the other ch of one XPA-2 and the same for the right speaker on the other XPA-2. By this way you obtain a mono setup with two stereo amp. Yup. I heard a definite improvement with vertical bi-amping. Or maybe it was the benefit of short (2 1/2 foot) speaker cables. Either way I had reduced treble glare and better bass definition. It's a similar benefit as using 4 monoblock, 2 seperate amp for high and low for each channel. I think that it's the most logical and benefit way to bi-amp, exepted of using 4 monoblock.
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