Ill start with my install story line, last year, I hooked a carputer up to a audio control 2sx (active crossover) now I didn’t put the setting on unbalanced (this could be the problem?) and then directly hooked it up to my Alpine MRV-F545, ch ¾ are subs (2 ohm load) and ch ½ went to a set of focal’s using passive crossovers.

Now the MRV-F545 has a input of 0.5v - 4v I believe, and I had the audio control unit was pretty much at full (I believe this would yield an output around 7-8 volts,) Im not sure what the gains were set to on the amp itself. So the amp blew and I sent it away to alpine, just got it back and I don’t want to make the same mistake twice.

I’m basically wondering if the audio control unit did this to my amp (the install was clean Alpine CAP, 1 gauge wiring, all the best grounding)

 

Do you have channels 3 and 4 bridged mono with a 2 ohm load? I doubt your Alpine is rated for that...

 

no way you can bridge channels 3 & 4 to a 2 ohm load on that amp...

 

you can not run a 2 ohm bridge load on the 2 channels. make sure that the amp can take 7-8 volt wich i believe the alpine wont all you are doing is clipping the amp if the signal is too high. the crossover had nothing to do with your problem.

 

my friend still has my box and manual and according to him the manual says ch 3/4 bridged are indeed 2ohm stable, anyone know FORSURE?