Question about Cambridge Audio Azur 640A Amplifier

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Protection mode overuse

My problem is whenever i play anything, even on low volume it will just cut out and the red light below where it says protection will flash and i have to turn it of at the mains to get it going again, yet it will do the same 5 minutes later. Anyone got any solutions? cheers.

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  • 319 Answers

Flashing protection LED indicates there is problem with circuit. Have unit serviced

Posted on May 12, 2008

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1 Answer

Protection light came on what cut off


Amp in Protection - Troubleshooting - Basic Car Audio ...

www.bcae1.com/.../troubleshootingbasicsampinprotect.htm
Some simply shut down and the power light will not illuminate when in protect mode. If the power light blinks then goes off, the amp is either going into protect ...

How do I fix my amp it keeps going into protection mode ...

? 2:00
https://www.youtube.com/watch?v=DQ1bdsm6s2c
Apr 24, 2013 - Uploaded by Nathan West
My MTX 600xd amp light won't even come on. ... Red light comes on. ... one.. and some times it goes into protection... once I turn the car off...

Jan 11, 2016 | Car Audio & Video

1 Answer

When raising volume deck cuts-off


Sounds like an overheating issue. Most car receivers have heat sinks at the rear to dissipate heat, but if there is little or no rear clearance for the unit the heat may build up and the unit goes into a self protection mode and shuts down.

Sep 01, 2015 | Car Audio & Video

1 Answer

My NAD C326BEE amp goes into protection mode at moderate volume


The protection only should come on, when the power amplifier has to give more current than it can deliver. (electronic fuse)
If in the music is a lot of subsonic, sound, so low you can't hear and your speakers can't produce, this could cause the problem. Normal CD players will cut of all frequencies beneath 20 Hz, but it could be your PC is giving everything from 1 Hz and above.
I would certainly try to play some music over a CD player and check if that would solve your problem. Not sure if that works, what you could do to suppress the sub sonic in the computer music.

Aug 22, 2012 | NAD C326BEE Amplifier

1 Answer

Jl 1000/1 goes into protective mode with low frequency


Do you have a capacitor????? If not, when its up loud and hitting hard it might be going into protection because of a voltage sag....If it goes below 11.8v they will usually do that.....Get a multi meter and put on the hot and ground of your amp when its playing loud and see what the voltage is dropping to.....If its going below 12v, thats your remedy...gd luck....

May 02, 2012 | Jl Audio 1000/1 Car Audio Amplifier

1 Answer

Well i was driving one day and my subs just whent out so i bought brand new wires and hooked everything up but the power protector light turns red whenever uu turn it up past volume 10 i really do not know...


It sounds like your amp is going into protection. I know it's frustrating, but this is actually a good thing. If you subs you have are drawing too much power and the amp can't keep up, it will shut off instead of melting the board. Usually, the protection mode only last a few seconds. The user normally turns the music down that the protection shuts off and the music plays again. I recommend looking at a larger amp for your subs, if you are going to play them that hard.

Aug 14, 2011 | Car Audio & Video

1 Answer

Everytime i try to play my system at full volume it cuts out then keeps playing and carries on doing this to i turn it to a certain volume


First of all find out the recommended speaker impedance for the receiver. Then find out the impedance of the speakers you are using along with it.
Simple rule is the speaker impedance can be higher but not lower than the recommended value. If it is so the receiver will run hot and if you turn up the volume higher it will run even hotter and then the protection circuit will cut off the Amplifier output to prevent burn out of components. Even if you have one defective speaker this cut off can happen. To confirm defective speaker -- disconnect one speaker at a time and turn on the amplifier and play it at cut off volumes.If by disconnecting one particular speaker the Amplifier does not cut off -- THAT SPEAKER HAS A SHORTED COIL and needs replacement.

Apr 03, 2011 | Philips Audio Players & Recorders

1 Answer

Ill play for about 4-5 minutes and the game will freeze up.


before you play have a fan blowing on it for ten mins. then whenever you play put the fan on low while you play. it worked for me.

Jul 11, 2009 | Microsoft Xbox 360 Console

1 Answer

Amp on "protect" mode


Hi, what you need to do is unplug all the connections to the amp. The amp goes into protection when the circuitry over heats.\
First decrease all your gains to minimal volume.
Connect your 12+V, remote, and ground.
See if the protection light comes on then.
Next plug in your RCA cables.
Check protection light.
Then plug in your subwoofer cables.
See if you are still in protect mode.
Hopefully everything works alright again.
Just slowly increase the gain to see what the cut-off is. Make sure you aren't dropping the ohmage too low on the amplifier. Check manual for correct wiring and such.

Feb 08, 2009 | Phoenix Digital PD-394 Car Amp

2 Answers

My amp stays in protection mode


Does it go into protect in the vehicle if you disconnect the speaker wires from the speaker terminals of the amp?


Nov 29, 2008 | Sony XM-2002GTR Car Audio Amplifier

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