very hot amp

[seatslayer 10+ year member]

I have an audiobank amp running two 1000w JBL 12" subs they are bridged as it is a 4ch amp, thing is the amp gets very hot, too hot to touch for longer than 2/3 seconds. I can also smell it, not a burning smell at all but a hot metal smell i dont know if that is good or not as in theory maybe it is drawing the heat away from the components inside but on the other side it might be getting too hot.

I was thinking about making something whereby i buy some small pc fans and set them up to blow air over the amp i need to know if that is really needed or not? And where could i power the fans from, could i power them from the interior boot light?

thanks

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[Hintzyboy 5,000+ posts]

Never heard of audiobank, but it sounds like you have two problems:

1. cheap crappy amp

2. improperly wired subs causing amp to drop below its stable impedence

 

[DD_Dave 10+ year member]

go to Walmart and get a house Box fan and a cheap DC to AC inverter so you can power it...then duct tape the amp to the fan after you hook the fan up...The fan can double as an amp rack //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif it'll help the amp run cooler...//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif the fans are cheap less tham $20.00 you'll probaally want to run it on number 3 in the trunk...or number 2 if its where you can hear it so you don't hear it as easily...It just takes a little rigging but you can remote mount the fan switch to your dash somewhere to control the fan speed...//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[xplicitACTS 10+ year member]

Audiobank is PRe Crossifre I do believe. More than likely you are expecting a 4 channel amplifier to do to much and either runing it at a low ohm or clipping it.

 

[seatslayer 10+ year member]

@ hintzy boy: this is the amp http://www.autostyle.co.za/prodview.php?prod_id=15684&pid=sound&cid=amps&pg=1&showall=1&brandstr=&str=

as you can tell i live in south africa.

and these are the subs: http://www.autostyle.co.za/prodview.php?prod_id=4612&pid=sound&cid=subs&pg=1&showall=1&brandstr=&str=

the subs are obviously bridged.

Please check to see if this setup is compatible, and is it usual for amps to get really hot?

 

[alex5857 10+ year member]

shitty amp.

 

[seatslayer 10+ year member]

Thanks alex thats a very descriptive and informative post but actually has no relevance to my question.

thanks

 

[dumple 5,000+ posts]

Thanks alex thats a very descriptive and informative post but actually has no relevance to my question.
thanks

niiice sick burn

someone said it it maybe that the ohm load that you have you sub at maybe to low for the amp thus causing extreme heat

 

[seatslayer 10+ year member]

How exactly do i calculate the ohm load and know whether mine is correct or not?

 

[dumple 5,000+ posts]

a digital multimeter is your friend . but what are the subs duel 4 single 4 so on

 

[seatslayer 10+ year member]

I posted a link for the amp and subs above which you can see but i found the ohm rating for subs which is Specs: Amplification type: Passive; Input Impedance: 4 Ohm; Sensitivity: 93 dB. from that could you tell if the amp and subs are matched

 

[hoss 5,000+ posts]

nvmd, there was some poasting while i was being slow...

 

[Fusion_FREAK 10+ year member]

Subs can't be bridged. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

They can, however, be wired into a parallel or a series. How did you connect the subs?

Are all four the channels bridgeable? Most 4 channel amps are only bridgeable on 2 channels to make one.

 

[seatslayer 10+ year member]

sorry i mean they are bridged on the amp, the amp has 4 channels and the one sub bridges two channels and the other sub bridges the other two channels. is that what you meant?

 

[01 S 10 10+ year member]

bridge the first two channels to one sub = 4 ohm

Ch. 1 + / Ch. 2 -

bridge channels 3 and 4 to the other sub = 4 ohm

Ch. 3 + / Ch. 4 -

almost all 4 channels can handle that, unless something else is wrong with the amp.