Bridgeable / Mono Mode
Bridgeable / Mono Mode tells you whether a stereo or multichannel amplifier can combine channels to drive one loudspeaker with more power. It is a yes/no feature.
Bridging is one way to combine channels. Some amplifiers instead offer parallel-output mono, which joins their outputs for one speaker. Simply feeding the same mono signal to two separate channels does not combine their outputs. A native monoblock already has one channel; this switchable feature does not apply.
Bridgeable / Mono Mode — Power Amp
For a power amplifier, the benefit is more output for one loudspeaker instead of separate stereo outputs. The feature itself tells you no wattage: read the rated power and permitted speaker load, in ohms, for that exact mode.
Do not assume a fixed power increase or carry over the stereo load limit. Follow the manufacturer’s specified input, mode settings and speaker connections; these depend on the amplifier.
Sources
- C 268 owner’s manual: bridge mode and power ratings — NAD Electronics
- CX Series manual: parallel input and bridge modes — QSC
- MC275 stereo and monaural connection diagrams — McIntosh Laboratory
- AHB2: stereo and bridged output specifications — Benchmark Media Systems