Amp bridging - with a twist

[CraigV]

Amp bridging - with a twist Q??

OK, here’s my idea, crazy though it may be. I have a 5 channel amp, and I’ve been reading all the pros/cons about bridging. But here’s the twist - let’s say I wanted to bridge two of the channels together in this manner: Take one channel output from my preamp (left front) & split it via a “Y” cable to two of the channels, and do the same for the right. On the two speaker outputs for each of the jumpered channels, wire one channel in parallel across the two speaker terminals, positive to positive to the positive on the speaker, negative to negative to the negative speaker input?

Would doing it this way increase the output, or just make a really neat indoor fireworks display?

 

[PENG]

Would doing it this way increase the output, or just make a really neat indoor fireworks display?

If everything is perfect and the two amps have 100% identical characteristics you won't get fireworks but I wouldn't take such a chance.

In theory you could get more output for low impedance loads but not high impedance loads such as 8 ohms and above especially if the load is highly reactive because your maximum output voltage is still limited to that of each amp on its own. In normal bridging mode you would get higher voltage for higher impedance loads.