electronic bridges?

[asmox]

i'm a relative newbling to car audio.. just to get that out of the way :O

anyway, i have a poweracoustik LT960/4.. it has a channel mode select switch that can be set to 2, 3 or 4. i currently have it set to use all 4 channels individually for my interior speakers. however, i want to bridge 1/2 and 3/4.. i figured that setting that channel switch to 2 would electronically bridge the channels. instead, when i set the switch to 2, the only thing that happens is i lose the ability to fade to my rear speakers (when i fade to the rear, sound from all 4 speakers goes out). a friend suggested that i might have my rca cables mixed around.. but i double checked them and everything seems to be in order. am i just wrong about the function of that switch? will i just need to bridge the channels physically?

the only reason i'm really asking is because i can't find the **** manual/wiring diagrams for that amp, and for some reason the poweracoustik site doesn't have the manuals available online.

thanks

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[Hooter 10+ year member]

that is meant to run the amp as a two channel amp, right now you have all 4 speakers hooked up to it. When you have it selected on 2 isntead of 4, only the front RCA's are feeding the whole amp, the two channel mode is meant to have , the two channels on the front to be bridged to one speaker, then the two channels on B to run the other speaker