Question about Infinity Reference 7541a Car Audio Amplifier

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Amp stays on all the time

The amp in my car constantly stays on when the car is off and the keys are not in the ignition. even without the rem wire hooked up the amp still stays on (not even in protect mode) im pretty much at a loss of what the problem could be

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Re: amp stays on all the time

Hi. your amp has an internal power supply fault. problem lies in the remote turn on regulator circuit or with the pulse width modulating circuit.this fault definitely needs to be in technicians hands. cheers

Posted on Aug 05, 2007

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Re: amp stays on all the time

Faulty amp, Nothing to serious try and get it repaired

Posted on Dec 13, 2008

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When I turn car off amp still stays on without keys in ignition

the constant power should be run to the battery. The "turn-on power" should be run to your radio which only comes on by the ignition. If it still comes on then your radio is wired to come on without key. Then you have to check the constant and turn-on wires for it.

Dec 19, 2012 | Orion HCCA-D2400 Car Audio Amplifier

1 Answer

My amp stays on all the time when power is connected, even when rem. power wire is not hooked up

The amplifier is connected battery power so it's always on. It should be connected to a power source that is controlled by the ignition switch, 1.e., hot in START or RUN

Nov 07, 2012 | Lightning Audio Bolt B2.150.2 Car Audio...

1 Answer

I have a California Profile 600 watt amp, I have multimeter and have power all the way to my 10

Power from ignition is setup to turn power On,

Check if +12V is available on "REM" terminal.

Check the speaker wirings , if speaker is connected to the

speaker output of the amp securely.

Oct 21, 2012 | Profile - California: 2 Channel 600W...

2 Answers

Amp want power off

If your Dual Car Amp refuese to switch ON check the following.
+12V wire is not connected or incorrect voltage.
REM wire is not connected or incorrect voltage.
Ground wire is not connected.
Fuse(s) are blown.
If the fuse blows repeatedly, check whether the +ve voltage wire touche the chasis of the vehicle. If it is OK, the fault is with the univt itself. That is, the output of the unit has a short. Check for any output IC failure. OK.

May 11, 2011 | Dual XPA2100 2/1 Channel 300 Watt...

1 Answer

How to installation ? what the Accessories ? thanx

accessories is usually the first position of your ignition key when you turn key from off. no ignition lights should be lit and cigarette lighter should work. this is acc need to connect acc wire of head unit to this circuit. (can pick it up at cigarette lighter ) but if your looking to wire REM wire to acc ---DON"T--- wire it to the blue wire on back of head unit(rem out)or blue with white stripe.

Jun 16, 2010 | Infinity Reference 7541a Car Audio...

1 Answer


what is your REM terminal connected to on the amp? It should be connected to the blue wire on your head unit. If it is not, then that's your problem. It sounds like you may have it connected directly to the battery, which is keeping your amp on all the time. The REM is the turn on signal for your amp.

Mar 18, 2009 | Car Amplifiers

1 Answer

Amp shuts off when switched from radio to cd

your amps rem wire is hooked to the power antenna wire on your head unit and so when you turn off the radio you would nolonger need an antenna so it powers down and would lower the antenna.Depending on the head unit you should have one output for the power antenna and one for the amp rem......If your head unit doesn't have the rem output you can wire it to the switched wire that powers your head unit but keep in mind the amp will stay on while you have the key in acc or run position even if your head unit is off.
hope this helps!

Jan 16, 2009 | Kenwood KAC-9152D Car Audio Amplifier

1 Answer

No sound from subs.

Sounds like you have the Remote turn on hooked to constant 12V instead of a switched power.
The Blue/White wire off the module should go directly to the amplifier remote terminal.
If this has a constant 12V when the key is off, the module is defective and needs to be repaired/returned.

Jan 03, 2009 | Alpine MRP-M350 Car Audio Amplifier

2 Answers


This is simple the memory wire (yellow) is connect incorrectly. It needs 12 volt constant or continously. meaning 12 volts even when the car is off.

Dec 06, 2008 | Sony Xplod XM-554ZR Car Audio Amplifier

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