I have a nitro amp 2500watts hooked up to a stock radio and 2 12's 1200watts each...when I turn my car on there is a humming sound coming from my subs. at this point my radio is turned off. when I turn my radio on the humming stops but the bass remote also turns off. how can I have my bass remote and radion be on at the same time?
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ok..well theres a lot of question in there, lemme take a shot at it.
the hi/low switch explained: the hi/low switch tells the amp what signal voltage is being delivered to the amp...hi-power (4-15volts) or low-power(micro-volts). Your aftermarket head unit had what are called pre-outs (or preAmp outs) meaning the source signal (your music) is not amplified before being delivered to the amplifier...sooo...your amplifier setting for your aftermarket radio would be 'low' to tell the amp that the music source being sent to it is low-voltage.
Typically a manufacturers radio will not have pre-outs, they will be amplified by the radios internal amp to anywhere from 4volts on up, and you need to tell your jl audio amp that the source music being supplied is 'hi' voltage.
soo...of course...if you are sending 10volts to the amplifier and tell it that your sending micro-volts (low setting) your amp will over-amplify the signal and thus the overwhelming bass you experienced.
Fused 12 volt power wire from the battery connects to +12V at the amp. Chassis ground wire connects to gnd at the amp. Switched 12 volt power wire (accessory) (remote turn on from after market radio) connects to rmt at the amp.
The 'remote' terminal is powered by a lead that is normally connected off the head unit...if it has this feature...the head unit, if a good quality one' will have a blue wire that will turn on the amp, by providing a signal to it.........if not, you can bypasss this
do you have the right size ground wire, relative to your power wire?
If your ground is smaller when you turn it up there is alot of power it needs an exit and if the wire is too small it travels elsewhere maybe your rca, causing your amp to protect.
there has to be sumthn hooked up wrong bc i have had same problem with my 12' subs but it was simply a matter of my rca jacks but sense you have checked them try rewiring the speakers if that does not work then your rca module may be burned out within the amp..iso then check the amp by taking the cover off and making sure nuthn is burned on the inside.or if any wires are loose or touching.