Question about Quantum Audio QCA4000D Car Amp

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No matter what i do the qca 4000d quantium audio amp still is getting hot what should i try

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Open it up 1st see if the fan is in working condition if not replace it with a computer fan if not take the fan off and replace the thermopast with artic sliver u can buy it at radio shack for little over 12$ make sure u dont get the thermo past all over and wipe the old thermopast off before applieing the new stuff wait 24hrs for it to dry and harden then it will stop with over heating if thats ur problem u can also use it on your mosfets the pices on the side if i am wrong then correct me but good luck with that :-) hope it helps someone

Posted on Dec 18, 2012

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Posted on Jan 02, 2017

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SOURCE: QCA2000D Car Amp: Bought a Quantium audio QCA2000D cozmic with no in...

the two outside terminals. the farthest negative and the farthest positive

Posted on Aug 02, 2010

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1 Answer

OH error QCA spa High jets work and heat


OH is the overheat code.

Your spa temperature is set above 108, or your thermostat is faulty & not reading correctly.

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Unlock control panel


Press & Hold the JET Button for 6 seconds (Most/Gecko & Hydro-Quip)
or
Hold temperature UP & DOWN together for 6 seconds.
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Balboa 7 button controls, both buttons to the left of the display screen & down temperature.

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I cannot get my brother 4000d threaded correctly


on the brother.com website,, they have downloadable manuals,,,on the home page go to product manuals
& then select home sewing & embroidery & then look for the model number of the machine

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QCA2000D Car Amp: Bought a Quantium audio QCA2000D cozmic with no in...


the two outside terminals. the farthest negative and the farthest positive

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What does FL mean on my hot tub?? water doesnt circulate but is still sort of warm...


FL could be a code for low flow. If you have no circulation this sounds like it. If your pump runs and you have no flow you could have a problem with your pump. Or if you have the tub drained then it could be an air lock, if you open the drain valve till you get water out that should fix that. Also check to be sure the isolation valves are open under the spa. I hope this helps.

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Cut out


rewire the subs-each sub you want in series=8 ohms per sub-then at the amp wire the two 8 ohm subs in parallel which brings the ohms back down to 4 ohms which is optimal for the amp and it shouldnt shut down on you any more-try that-good luck

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1 Answer

Need to pick perfect amp


I suggest to use separate amps to your sub, get a 2 channel amp for your sub and 4 channel amps for your speakers.

Here are my Top 5

  • Lanzar -OPTI4000D
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1 Answer

Ma audio hk 4000d


you have definately blown a output channel, or power supply. Send it in for warranty.

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