Question about Jl Audio 250/1 Car Audio Amplifier

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Jl amp i have a 250/1 monoblock amp. when i hook it up to my jl 10" subs and turn the power or the volume up, it turns the power off for about a second and then the amp comes back on. it seems to trip off like a relay is over heating or something. if the volume is low or the gain is turned way down, it won't shut off. i also tried another amp on this same system and it works fine turned up the whole way.any help would be great.

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The overload protector of your unit it so sinsitive try to cutof the overload relay and then observe 20 min. monitor the allominum heatsink the temp. normal

Posted on Sep 19, 2007


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Shuts off when the volume gets turned up didnt do this wen new

A mono amp usually can handle only two 4 ohm subs. You see when you hook up two subs in parallel it drops the ohms too 2 ohms and 3 in parellal drops it to 1 ohms overheating the amp and cause power failure. Unless you bought a Mono amp thats 1ohm stable. But still I've seen cheap 1 ohm stable amps not last long. Also possible your subs are fried too check them with a multimeter and measure each sub ohms.

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I bought a 500/1 jl audio amp and also a w7 10 sub

if its cutting off and right back on then check your ground and your power wire makes sure both are connected good and none of your fuse's are blown, either that or you got a wire hooked up backwards in the sub.. but my guess is that the sub is hooked up wrong... that sub should be hooked up in a series or in parallel,

ok if your running just one speaker, it should be hooked up like this and 2 speakers are a different way...

this is parallel :pos to pos , neg to neg, then one wire coming from pos on sub to pos on amp then neg on sub to neg on amp but bridge the amp on your amp should be 2 pos and 2 neg in two different channels take the pos off the sub into the pos on 1 channel and then the neg from sub to the neg on the other channel,

this is series : on the sub it will go pos to neg then the other neg and pos will go to the amp, but make sure the pos and neg r on different sides of the sub, dont hook them both to the same coil

if your need more help give me your email and ill send you a pic of how to do it...

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