500/5 i have a jl 500/5 amp the yellow low ohms light lights up when nothing is plug in except the 12v power and ground and remote
any advice what dose this mean is it an internal problem or what
thanks
Dustin
yes there is sound on all ch but the lf ch other than that the amp works fineyes there is sound on all ch but the lf ch other than that the amp works fine
AnonymousSep 12, 2008
Mine does the same thing....except no sound.
Mine does the same thing....except no sound.
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I think you might have your remote turn on from your deck to amp hooked up wrong check that out!! I not are you familliar with the mr. butterworth crossover JL developed for that series of amp? Just like its big nrother the 1000x1 class D the built in smart crossover has many built in pretect modes. If your subs are drawing to much power it shuts down if they draw to little of ohms or to many but that 500 is 1 ohm stable so download the crossover settings from JL and go from there
hook up the remote wire ( or make sure its hooked up good) check your ground! ground wire not big enough awg wire and put on bare metal not more than 1 foot away from amp. bad ground will cause this.
Its the power transistors that would be affected by low voltage. It delivered till it finally gave up 'cos the output wattage to be generated at low voltage means more current flowing through the equipment. This high current will adversely affect all small solenoid valves & transistors and IC's. Even failure of one section of any IC is rarely detectable with the naked eye. It has to be thoroughly checked with a multi-meter to assess the damage correctly......sodeep
I would try running the subs in parallel. Pos to Pos Dual Voice, Neg to Neg Dual Voice. Then Run + to + stereo - to - stereo on both channels.
So you have + and - running to one channel and + and - running to the other channel.
Also your LPF filter could be set too high.
1800W peak output at 2 ohms 975W peak output at 4 ohms 600W RMS (continuous) at 2 ohms 325W RMS (continuous) at 4 ohms Variable LP crossover adjustable 35-250Hz 4 AWG power/ground inputs and RCA pass through Low-pass filter Bass boost 0-18dB adjustable remote punch bass EQ Signal-to-noise ratio: >80dB Line-level input
It is going into protect mode for a reason.
Disconnect the subs and turn everything on again. If the light comes on, the problem is internal and will need servicing by a technician.
Disconnect the speaker wires from the amplifier's terminal block. If the low ohm light still comes on with no speaker wires connected, the amplifier will need to be repaired.
If the light no longer comes on, check the speakers and the wiring.
Assuming that you've confirmed that the speaker is in good working order and that the wiring isn't shorted in any way...
There are separate power supplies for the high and low amplifiers. It's possible that the one for the sub output has failed. If that's the case, the output transistors probably failed and that's what damaged the supply.
Generally, I'm willing to help people repair their amps but this is a large, complex amplifier and it should be repaired by a qualified technician.
yes there is sound on all ch but the lf ch other than that the amp works fine
Mine does the same thing....except no sound.
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