Car amp's stopped working. Putting out a heart beat sound through subs but no bass.
I have a JL Audio e1200 amp powering my two 12" subs.
Recently when driving, the amp cut out at high volume.
I turned the system off and let it cool down for 10 mins.
When I turned the system back on, a heart beat sound immediately started coming from the subs, but no music bass was being made. It is a constant beat, even when the head unit is changing between inputs, or the volume is right down..
All the wiring is intact, I did a continuity check.
When on, all the speaker outputs for the subs have earthed out..
Does anyone know where I can get a circuit diagram for it from?
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Sounds like you are showing too low of an impedance load to the amp. The E1200 is only stable as low as 2 ohms. If your subs are wired to show lower than a 2 ohm load then the amp will go into protection mode as the volume or gains are turned up
what is the impedance of your woofers it will be a number with an Omega symbol. Looks like a horseshoe next to your woofer . Like this JL Audio 10W1v3 8ohm. Please, Please tell me you bought 8 ohm woofers JR?? Because if not, it ain't gunna happen.. If you did buy 8 ohm woofers than wire them in parrellel which means all the +'s together and all the -'s together giving you a final impedance of 2 ohms and your amp will think your a car audio GOD... But if not be ready to smell plastic burning where your amp used to be.... let me know i can walk you thru the wiring but let me know what you have. ok. mark
That amplifier is 900W x 1 @ 2ohms.
If your subs are 4ohm SVC wired Parallel, resulting in a 2 ohm load, each sub will only see 1/2 of the rated power. (450W ea.)
Your gain (sensitivity) setting should be between 75% and 85% to max. You will be fine.