One thing I did not see mentioned in any of the responses is that whenever an amp is bridged, the load impedance it sees is halved and it is called upon to deliver twice the current. This means a nominal 8Ω load is seen as 4Ω by the amp, and a nominal 4Ω load is seen as 2Ω.
Not all amps, actually few, can operate in bridged mode into such low impedances without being adversely affected. Just something to be taken into consideration when thinking of operating amps in bridged mode.
Not all amps, actually few, can operate in bridged mode into such low impedances without being adversely affected. Just something to be taken into consideration when thinking of operating amps in bridged mode.