Amp overheating . . .
Thread Starter
TECH Fanatic
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From: Murfreesboro TN
Amp overheating . . . I have a JL Audio 300/4 amp mounted back in my spare tire compartment. Now that the hot summer has hit, I'm having problems with this sucker overheating. JL has a feature that once the amp gets a certain temp, it turns off, thakfully enacting its self preservation.
My plans to comabt this are turn the amp to where the cooling fins point to the right(instead of up). The manual says this is more efficient for cooling.
I also want to install a small fan on the unused speaker grill back there by the amp. Does anybody make something like a small computer fan that runs on 12 vots? How should I wire this? The only way I can think is to use a spot on the fuse block and wire it so that it is switched on by turning the key in the ignition.
My plans to comabt this are turn the amp to where the cooling fins point to the right(instead of up). The manual says this is more efficient for cooling.
I also want to install a small fan on the unused speaker grill back there by the amp. Does anybody make something like a small computer fan that runs on 12 vots? How should I wire this? The only way I can think is to use a spot on the fuse block and wire it so that it is switched on by turning the key in the ignition.
i would get a large 12 volt fan like what dj's and some home theater setups have in component cabinets. the pc ones only go up to around 120mm, some are 140mm but its still not the greatest cfm for cooling an amp...
turns out cardomain (which is a non-sponsor but i dont think any of the sponsors sell this) has some http://www.cardomain.com/shoplist~t~12+Volt+Fans
turns out cardomain (which is a non-sponsor but i dont think any of the sponsors sell this) has some http://www.cardomain.com/shoplist~t~12+Volt+Fans
honestly, unless your amps are in a sealed environment, there should be no real need for fans. If your amps are overheating under normal conditions in less than a few hours of normal play, id try to get the amp warrantied instead of making a bandaid. Ive played my polk 4 channel and sub amp for hours on a few trips to LA and had 0 problems, sure the amps were pretty hot, but the protection and thermal LED never turned on.
TECH Apprentice
Joined: Jan 2006
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From: Hampton, VA
off-topic, but how easy was it to fit the aftermarket amp in the stock location back there? i been wanting to do that, but never seen write-ups on it.. was also lookin at the exact same amp u got, so size wuldnt be that big of a deal.
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Thread Starter
TECH Fanatic
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From: Murfreesboro TN
It was kind of tricky to mount back there because you have to stand on your head to work on stuff back there. The worst part was trying to screw the wooden board to the screw holes in the car, you only have a few inches of clearence on the back side of the board. I also put my crossovers back in there.
What type of subs are you going to run??? If you are going to have a huge sub box taking up all the room in your "trunk", I'd mount it somewhere on the box, or on the back of the box.
What type of subs are you going to run??? If you are going to have a huge sub box taking up all the room in your "trunk", I'd mount it somewhere on the box, or on the back of the box.
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Verdad Gallardo TECH Apprentice
Joined: Jan 2006
Posts: 381
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From: Hampton, VA
ill eventually drop a jl 10w-series later on, but for now, im just workin on the speakers. i guess ill worry about the amp rack for both subs when the time comes, but for now, i know it wont be for a long time. just wanna keep my sound system lookin clean and stock-as-possible.
u got any pics of installation? wut board are u talkin about? im gonna take a look at the area today when i get a break from work so i can have a better understanding... but did u just make a board to fit back there?
u got any pics of installation? wut board are u talkin about? im gonna take a look at the area today when i get a break from work so i can have a better understanding... but did u just make a board to fit back there?
You're in a closed space with nowhere for the air to go
particularly. At least you can stir it up some and hope
the body sheet metal passes it on out. If you can
position the fan somewhere that it will actually draw
in outside air that would be better. Digi-Key is one
place to look for 12V DC brushless fans but so are
thrown-away PC carcasses. You could get a cheap
thermostat switch (also from Digi-Key) that runs the
fan only when the amp case gets hot, simplifying
the battery-drain, switched-power problem and
making it not noisy except when you're making big
noise anyway.
particularly. At least you can stir it up some and hope
the body sheet metal passes it on out. If you can
position the fan somewhere that it will actually draw
in outside air that would be better. Digi-Key is one
place to look for 12V DC brushless fans but so are
thrown-away PC carcasses. You could get a cheap
thermostat switch (also from Digi-Key) that runs the
fan only when the amp case gets hot, simplifying
the battery-drain, switched-power problem and
making it not noisy except when you're making big
noise anyway.
