Question about Jl Audio 500/1 Car Audio Amplifier

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Low ohm light wont go off

Ive been running 3 amps in my explorer. 2 500/1's and a 300/4. the 500/1's run two 10w7's sperately. one of my 500/1's low ohm light came last week. so i checked all the wires for compromises and they were fine. so to test i unhooked that amp and put the other 500/1 where the low ohming amp was and it worked fine! i then plugged the low ohming 500/1 into my buddies wiring and the light came on again and wont turn off? can anybody help? ive thought of every type of test and nothing helps! the only thing i can think of is that the amp is in protection mode. please help! thanks


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Pbabin is correct, that would cause resistance to be at or near 0 ohms and the amp would pull a lot of current (if it did not go into protection mode).

Posted on Feb 12, 2008

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It's likely that the output transistors failed in the amplifier and it will need to be repaired.

Posted on Nov 09, 2007


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I looked up the correct way to wire my JL 13.5W7 1.5. Therefore it said to wire it in parrallel. I understand this will put it at .75 ohm. As I start to turn it up it sounds great, very loud but once the...

1000/1v2 Class D Monoblock Subwoofer Amplifier Specifications:

Rated Power:
1000 W RMS @ 1.5 ohm - 4 ohm (11V-14.5V)

THD at Rated Power:
<0.05% @ 4 ohm

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Frequency Response:
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Damping Factor:
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According to the chart your amp is only stable down to 1.5 Ohms, so running at .75 Ohms the noise you are hearing is the amp clipping (running more power than it can handle at low ohms)
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Help me...

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-Andrew Hawkins

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