How to bridge a 4-channel amp to 2 channels. If you have a 4-channel amp and want to bridge that to 2 channels, you can follow these steps. Identify the amplifier. Identifying the amplifier means finding out if your amp is bridgeable or not. Because otherwise, you will be wasting all your time and may even damage the existing amp with the wrong.. Each channel has its own power output, and the amplifier's total power output is the sum of the individual channel outputs. Understanding this independent channel operation is crucial before attempting to bridge. Furthermore, many 4-channel amplifiers offer bridging capabilities, transforming two channels into a single, more powerful channel.
For example, see the bridged 4 channel amp wiring diagram below. Of course, this 4-channel amp has four terminals with a (+) and (-) for each one. To bridge your amp you have to connect the speaker wires to a (+) and (-) channel. So the (+) speaker lead should go in the (+) terminal in channel 1 of the amp.. Understanding Your 4-Channel Amp. A 4-channel amplifier, as its name suggests, has four channels, each capable of powering a single speaker. However, by bridging two channels together, you combine their power to create a single, more powerful channel. This is ideal for powering a subwoofer or other high-power speaker that demands significant.