what does bridging an amplifier do
1 Bridging an amp cuts the resistance load (measured in ohms) in half, which can cause it to overheat. 2  Be sure to check your manual (or the manufacturerâs website) to see whether or not your amp can function at half the ohms it currently uses. 3  If your amp does not claim to be able to bridge, don't do it.
Amp Bridging: Amplifiers which support Bridging allow you to team up two channels to increase the power. You connect the +ve from the speaker to the +ve on Channel 1, and the-ve from the speaker to the-ve on Channel 2.