Overheating MB Quart OA800.4 kicking into protect mode

[Thescher]

I have a MB Quart OA800.4 wired to 2- 6x9s (Kenwood) & 2-6.5 Kicker wired correctly with 12 ga speaker wire. Power wire is 4ga & have had the amp in numerous locations, one being on the outside of my sub box & it's overheating even without really pushing it. The amp now is in a storage area in the cargo space in the rear of an Exterra. Have 2 12v fans in the area pushing & pulling air across the tops of both amps back there. Got a Boss class D 2400 pushing my factory 8" sub under the seat sub & run in parrellel with a 12" Kicker sub, sitting right next to it running cool as a cucumber! Pushing fan blows in across the MB Quart & pulling fan pulls out across the Boss which is getting the warmer of the air between the 2. Which is really kind of a moot point as I said I have had it on the outside of the sub box & it made no difference. Although at that time I thought I possibly could've had an Ohm mismatch as I spliced into the factory speaker wiring. Not now though. Correct & direct wiring. I did read one review that said those amps run kind of hot. The other thing is I am splicing eight gauge off the 4 Ga to supply power to the boss amp.

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[basswiigee2fix]

sounds like ur running a lower ohm load than amp likes... you got alot going on in there lol...

 

[basswiigee2fix]

i bet the kicker 6.5 and kenwoods arent same ohm load...

 

[michaellane 5,000+ posts]

One speaker per ch. And it should be fine. Also these new onxy line amps arent the dsc line and im sure arent as good

 

[CrossoverOre 10+ year member]

put a dmm to the speakers and see where they are resting. also reference to ground to make sure things arent grounding out. what kind of deck are you running?