Amp Protection Mode with Battery


New member
Username: Joanmvf

Post Number: 1
Registered: Aug-14
Hello everyone,

I have in my car two amp, A kicker 1500.1 and a kicker 850.4, before 2 days ago I used to have a kicker 850.2 and the kicker 850.4. So, I just replaced the 850.2 for the 1500.1.

I didn't add anything else, same wired, same everything. But my problem is when I start the radio with engine off only battery, the 1500.1 goes on protection mode. But if I start the car engine the 1500.1 start like no problem.

I did a voltage test to the amp, while the engine is off, and my voltage is 12.7v, with engine on 14.3v.

I did all the test to verify what's going on. I plugged only the 1500.1 amp to the positive, ground and remote, not speakers or RCA, and it keeps doing the same.

Any idea??.

Gold Member
Username: Joe1234

Post Number: 1969
Registered: May-09
The test is positive an remote to positive line and ground to chassis.

I would recheck your ground to chassis bolting and your lines and battery. Also the final load from the subs to be withing the amp's spec.

Also you can't really run a 1500W RMS amp on stock electrical nicely.
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