300/4-has blown the right front speak 2 times. they covered the first as the installer blew the first. Before they blew the channel comes on but even unblown speaker sound blown,the sound goes away and u can get into the volume TILL -POP- there goes another driver to that channel only. all other sem ok.Do i need to send in for repairs? WHERE Phryo

SOURCE: low ohm light on 500/5 front left channel doesn't work.

The first thing is to meter all the speakers with a volt/ohm meter. They should read somewhere between 2-6 ohms. If they meter good try swapping the RCA's and see if there is any difference. But if both of those check out ok than. Unfortunately it would appear that your amp has a bad output channel. What seems to happen is that when the amp is cycled off and on, off and on etc. the solder on the PCB can get brittle causing problems. The only answer i can offer is to send it to JL to repair or find a good repair shop that works on car audio amps. It's getting harder to find a good tech but they are out there. If you send it to JL they have a set repair rate of $180.00 which covers the return postage while the customer pays the shipping cost getting it there. They do an excellent job and pretty much go thru the whole board and replace not only what is wrong but will also perform any mods or changes since date of manufacture.

Testimonial: "yes I have already sent the unit to JL. it seemed like the fastest and more secure way of fixing this problem. thanks."

SOURCE: amp sends power to sub at low volume. but when

are the sub speakers ok? if ok then u have a problem with the Amp and the output IC's will have to be checked there cud be a problem with the input card in the amp.