JL Audio Amp problem
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=32469
Printed Date: July 09, 2025 at 7:35 PM
Topic: JL Audio Amp problem
Posted By: Stunts
Subject: JL Audio Amp problem
Date Posted: May 20, 2004 at 8:47 PM
I have a JL 300/4 amp i hooked it up and then the low ohm light lights up, and the sound comming out of the speakers is all choppy. does anyone know whats wrong with it? I hooked it up with out rcas and speakres hooked up and its the same.
Replies:
Posted By: thapimpfromchi
Date Posted: May 20, 2004 at 11:40 PM
"I hooked it up with out rcas and speakres hooked up and its the same." can you elaborate on this a little more? im not sure i understand what you are saying.
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1990 Honda Civic HB:
Clarion DXZ545MP H.U.
2- 6.5" Power Acoustik interiors
Diamond Audio 600.1 amp
Diamond Audio 15" M6MKII
Pyramid PB881X 4 CH. Amp
Posted By: Stunts
Date Posted: May 20, 2004 at 11:52 PM
sorry. i thought what might of been causing the problem was my speakers or RCA wires so i disconnected them to see if that was casuing the problem but it wasnt , the low ohm light still stayed lite. what would casue for the low ohm light to light up on the JL amps?
Posted By: chevyman26
Date Posted: May 21, 2004 at 12:07 AM
Did you just buy it or did it work before?
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You'd better get me out of this lord... or else you'll have me to deal with. -- Hunter S. Thompson "F.A.L.I.L.V."
Posted By: Stunts
Date Posted: May 21, 2004 at 2:59 AM
the amp is used this is the 1st time i am hookin it up
Posted By: forbidden
Date Posted: May 21, 2004 at 1:49 PM
Bought on e-bay by chance?
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Top Secret, I can tell you but then my wife will kill me.
Posted By: Stunts
Date Posted: May 21, 2004 at 2:01 PM
forbidden wrote:
Bought on e-bay by chance?
nope
Posted By: kgerry
Date Posted: May 21, 2004 at 2:24 PM
hey, we gotta ask.... e-bay certainly keeps my service dept. busy....... funny thing is... i'm amazed at how many e-bay people come in with a dumb look on their face and say " i cant believe it doesnt work " ------------- Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: thepencil
Date Posted: May 21, 2004 at 2:28 PM
I share you humour kgerry. ------------- Be careful whose advice you buy, but be patient with those who supply it. 
Posted By: Stunts
Date Posted: May 21, 2004 at 2:53 PM
kgerry wrote:
hey, we gotta ask.... e-bay certainly keeps my service dept. busy....... funny thing is... i'm amazed at how many e-bay people come in with a dumb look on their face and say " i cant believe it doesnt work "
cool makes more money for you. anyways i bought 2 JL amps locally a 500/1 and the 300/4 for under 350$ for both. the 500/1 works fine. can anyone point me in the right direction on how i can get the 300/4 workin correctly again.
Posted By: kgerry
Date Posted: May 21, 2004 at 3:02 PM
is there any type of a low impedence switch on the amp? if not and it's giving you this problem running in a no-load situation i would suspect a problem internally in the amp itself......
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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: DYohn
Date Posted: May 21, 2004 at 3:03 PM
If the amp shut down on low ahms (which indicates either the speakers you have connected are too low impedence, are shorted out, or the speaker wires are defective) it will stay in this protection mode until you power cycle the amp. Turn it off, pull the main power fuse from your power cable, disconnect the speakers, re-install the fuse, and turn it back on. If the "low ohm" light is still on, the amp is fried and has probably been either operating beyond its capabilities (clipping) for a long tiome, or it has been physically damaged. It will need repair work. ------------- Support the12volt.com
Posted By: Stunts
Date Posted: May 21, 2004 at 6:48 PM
i reseted it still the same, does anyone know if i could send the amp back to JL for repairs?
Posted By: DYohn
Date Posted: May 21, 2004 at 7:26 PM
Is it under warranty? If so, take it to where you bought it. If it's not under warranty, contact JL at www.jlaudio.com and find an authorized service center in your area. ------------- Support the12volt.com
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