Bridging is combining two stereo channels into one mono channel. Those are both mono amps. The term you want is "strapping". You can't do that, either, with those amps.
the only time that an amp can be strapped to another amp, is if they are both the same model... and if they are strapable... aint goin to find that on an alpine
the only time that an amp can be strapped to another amp, is if they are both the same model... and if they are strapable... aint goin to find that on an alpine