problems with alpine amp

[BeAlLsTaR13 10+ year member]

well ive got an alpine mrp-m450 amplifier here, and it doesnt feel like putting out any power..

amp turns on and everything, it has sufficient voltage to run.. 14.2-14.4 volts.. should be enough

now the thing is it just wont put out ANY power. i had it hooked up to a type-e, worked fine got a new amp for the sub and decided to run speakers off of it, didnt work.. on the side theres a place for a harness to hook up speakers, tried that didnt work used the direct output terminals got nothing at all, took out the DMM changed to AC voltage placed the proper leads on each terminal and it read 00.0 volts, so this told me it wasnt putting out any power..

so i took off the back of the amp to check out the guts, ive been examining it for bout 20 mins or so now and dont find anything disconnected or blown or anything

anyone know what it could be?

oh and the amp is 2 ohm stable, we had 2 type-e subs hooked up to it and sometimes it would shut off, cut out like an amp would that was trying to push out power to a lower ohm load its not cabale of doing, each sub is 4.2 ohm coils (SVC) wired in parallel and it gave us a 2.4 ohm load final impendance it would cut out at high volumes, hooked up 1 type-e and worked fine..

what could the problem be

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[BeAlLsTaR13 10+ year member]

anyone?

 

[BeAlLsTaR13 10+ year member]

anyone?

 

[BeAlLsTaR13 10+ year member]

ttt

 

[BeAlLsTaR13 10+ year member]

Ttt

 

[AllenH427 10+ year member]

I have an F550, I'm sure you already know this, but it's worth a shot telling you. Change the filter settings to off. Also, make sure your preouts in the back of the headunit are for channels 1234, not subs.

 

[BeAlLsTaR13 10+ year member]

it doesnt have filter settings on it, and its a mono amp..

it worked fine until we took it out it was pushing 1 type-e with no problems, with the second it went out at high volume as a result from too low of impendance, which isnt normal because its 2 ohm stable and thats what we were feeding it...

now it just wont put out any power, in his car, or my car. so it isnt a voltage issue... it has 1 set terminals for a sub, but on the other side is an attachment for a wire harness for a pair of speakers, LF+ LF- RF+ RF- and it plugs into the amp. speaker outs dont get power to them, and the sub terminal doesnt get any output power, i checked with a DMM

 

[AllenH427 10+ year member]

Ahh, ok. I thought I read the F450 at first which is the 4 channel, which is what I was talking about.