2. amps-preamps
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Can any stereo amp be bridged to mono ?

I came across some professional audio pdf's when researching a Yamaha P2200 amp. They state this is easily done ( with their amp ) with a splitter transformer on the input with one side out of phase with the other going into each channel; then connecting the speaker to the 2 positives. Would this work with any amp ?
The pdf is at this address - check section 6 page 17
http://www2.yamaha.co.jp/manual/pdf/pa/english/amp/P2201E.pdf

Your expertise required, expected and I am eternally grateful
drguayo
herman
2,215 posts
 
Yes, it will.
s7horton
1,077 posts
 
In response to the title of your post, no, not any amplifier can be bridged.
sidssp
1,077 posts
 
No. Not any amp can be bridged. It depends on the design. For example, some amps are already internally bridged by design and cannot be bridged again.

If you are interesting in bridging to increase output, please check with the manufacturer.
zorpman
87 posts
 
Yes, but only if the amp uses a common ground.

Also remember that a bridged amp sees 1/2 of the original speaker resistance. If your speakers are 8 ohm the bridged amplifiers only see a 4 ohm load. Make sure your amps are stable at the reduced load.
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