Question about Infinity Reference 7541a Car Audio Amplifier

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Amp 7541a amp was working fine, Took it out of one

Infinity Amp 7541a, amp was working fine, Took it out of one car to put into another, Hooked it up right but protect light comes on for 5 sec. then goes off and that all it does?

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REMOVE THE RCA INPUTS AND DISCONNECT THE SPEAKERS, THEN POWER THE AMPLIFIER UP WITH THIS NO INPUT, NO SPEAKER LOAD CONDITION. IF IT STILL GOES INTO PROTECTION AND YOU HAVE VERIFIED THAT THE POSITIVE AND ESPECIALLY THE GROUND CONNECTIONS, ALONG WITH THE REMOTE CONNECTIONS ARE 100%, THEN THE AMPLIFIER WILL NEED TO BE SERVICED. KEEP IN MIND, THAT DURING THE INITIAL TURN ON OF THE AMPLIFIER, THEY SOMETIMES WILL ILLUMINATE THE PROTECTION LIGHT WHILE STABILIZING THE POWER SUPPLY AND OUTPUTS, BUT AFTER THAT THEY SHOULD SHOW NORMAL POWER UP. IF YOU GET IT TO POWER UP FINE, THEN RECONNECT THE SPEAKERS AND IF STILL OK, THE RECONNECT THE RCA'S. IF IT IS STILL POWERED UP, THEN START TO TURN UP THE MUSIC. IF IT IS STILL POWERED UP AND NO MUSIC, THEN CHECK THAT YOU DEFINITELY HAVE A PROPER SIGNAL COMING FROM THE RADIO. LET ME KNOW IF YOU NEED FURTHER ASSISTANCE.....V

Posted on Jan 06, 2010

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I have a Infinity7541a amp. I have 7.5 volts dc to the amp. If I disconnect the power to the amp and read it its 12.2. Is something pulling it down in the amp


no. its kinda like a house plug. think of the one on your laptop, on the plug it tells you it needs 240v to power. but it only puts out 12v to power your laptop. the exact same thing is happening with your amp. the amp only needs 7.5 to work but its taking 12.2 to power it. its normal and nothing to worry over

Jul 18, 2012 | Infinity Reference 7541a Car Audio...

1 Answer

I have 4 12s in my car would this amp be good


no for one its a 4 channel amp made for highs mids etc.

now saying that, what kind of subs are they svc or dvc what ohm load and rms wattage each sub can hold or just a model number will do.

Dec 13, 2010 | Infinity Reference 7541a Car Audio...

1 Answer

INFINITY AMP PROTECTION LIGHT FLASHING


Overload maybe. If the amp is run at an improper impedence, the amp will shut down. If you are "CLIPPING" speakers / subwoofers the light will blink to indicate a hard clip . Example: 4ohm/2ohm stable amp with 4 ohm subs wired at 1 ohm.

Jan 28, 2009 | Infinity Reference 7541a Car Audio...

1 Answer

Infinity Reference 7541a protect & Clip lights come on


Hello pianopeter, I have the same amp with the same problem but only when the crossover mode switch on the front channel is set to low pass or high pass. Have'nt fixed that yet cause when I got the amp and put power to it the clip and protect lights would flash back and forth. I turned out to have 2 bad output transistors on the right front channel, I replaced them and amp works great now. Then when I was doing final testing I switched the crossover mode switch to lowpass and your problem occured. I do believe the problem is in the removable board which controls the controls the crossover and input to a point. Try moving the crossover mode switch to flat on both front and rear and let me know if amp works fine that way. I'll be working on this problem soon but would like to know if your problem changes if you move the switch to flat. Please leave me a message as soon as you find out cause this will aid in the process of me fixing problem. I am an electronics tech and buy and fix broken amps all the time so I have a really good knowledge of car amp repair. Once again let me know ASAP, Thanks

Jan 15, 2009 | Infinity Reference 7541a Car Audio...

1 Answer

Amplifier Clips?


trying to draw to much power off the amp, i would say it isnt big enough for the subs you have or the wire (power) for the amp is way to small. car audio has specific requirements exact specs on all of it will make a big difference in the help we can give.

Jan 10, 2009 | Infinity Reference 7541a Car Audio...

1 Answer

Amp not working


Does it do the same thing if you remove the RCA input and disconnect the wires from the speaker terminals of the amp?


Oct 25, 2008 | Infinity Reference 7541a Car Audio...

1 Answer

Channel not working


Get it repaired by a car audio shop, if its expensive get a new amp.

Apr 13, 2008 | Infinity Reference 7541a Car Audio...

2 Answers

Installing a car stereo in my house


You would do best with a 12volt inverter. It will bring the house voltage down to the necessary 12 volts for your car stereo. Best of Luck.

Oct 02, 2007 | Infinity Reference 7541a Car Audio...

2 Answers

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

Aug 04, 2007 | Infinity Reference 7541a Car Audio...

2 Answers

POssibly Blown amp? Please help


disconnect all power cables.make a short between terminals G&P G&R then try amp without any speakers connected.

Jan 06, 2007 | Infinity Reference 7541a Car Audio...

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