Question about Jensen Power 900.1 Power Series Class Ab Monoblock Power Car Amplifier/amp

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Overheating overheats as its used to the point it kicks the amp and subs off until it cools down enough to come back on its wired to 2 10 inch rockwell frostgate subs duel voice coils wired at 2 ohms each

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Posted on Jan 02, 2017

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Duncan
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SOURCE: Car Audio System Drwing too much power with 2 different Amps

A dual voice coil speaker can be wired to be a 2 ohm speaker or an 8 ohm speaker depending on whether you wire it in series (8 ohm) or parallel (2 ohm). When you bridge your amp then the two channels will share the load from your speaker. If the speaker is wired as 8 ohm then each channel of the amp is driving a 4 ohm load which is fine. If you are bridged into a 2 ohm speaker then each channel will be driving a 1 ohm load, which is a very very heavy load. Is your amp designed to drive a 1 ohm load? If not then that would explain why you are having a problem.

Posted on Sep 14, 2007

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jcameo7270
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SOURCE: I got these subs given to me brand new from my dad

Ok..If each coil is say 4 ohms and you wire them in parallel you will obtain 2 ohms...in series you will obtain 8 ohms...remember..series resistors add together and parallel resistors(of the same value) divide...so if you were to wire all 4 voice coils in parallel, then you would obtain 1 ohm...or, if you were to series all 4 voice coils then you would obtain 16 ohms...a lot of amps are not stable down to two ohms..the way we did it old school was to parallel each speakers voice coils to obtain 2 ohms..and then we would series the 2 speakers in the box to obtain the 4 ohm load needed by the amp

Posted on Jan 07, 2011

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Are you sure you getting enough power to push everything. I have seen when the voltage is too low coming in, the amps will shut down so they don't overheat. Once they've cooled off and the volume level is lowered they will kick in again. Low voltage and a heavy draw will create massive amounts of heat.

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At idling speed an engine does build up a lot of heat and the cooling fan will kick in. In slow moving traffic or traffic jams the temperature gauge can touch the red - particularly on hot days. The reason it cools down when you start moving is because of the air flow through the radiator.

Presumably there are no leaks from the cooling system otherwise you would have mentioned it. In normal circumstances the fan will not be running as you are driving at speed, as the air-flow through the radiator is sufficient to cool things. The fan only kicks in to get rid of excess heat - and this usually occurs at idling speed or after you have parked the car.

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Is your car overheating in normal driving conditions or just at idle speed? Overheating in normal driving conditions can be caused by things like a failing water pump, blocked radiator, collapsed hose, faulty thermostat or, in the worst case scenario, cylinder head problems.

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You could just have a simple idling bias or dc balance alighnment thats needs attention. Always take care of the smaller problems before they grow as this problem could grow to where it pops your outputs , your speakers or the drivers. Try this before sending it in. 480-967-3565 Good Luck

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