Question about Volfenhag ZX-7180 Car Audio Amplifier

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Amp protection light

Will not go off and speakers are popping

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2 Answers

Yu prolly blew em. to much power

Posted on Sep 11, 2008

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Is the amp well grounded run a wire from amp hosing to metal of car hope it work cheers

Posted on Jan 17, 2008

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2 Answers

My Harmon kardon is stuck in protect mode


Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty. Double check all connections .A thumbs up would be greatly appreciated if this answer is helpful to you. Worth fixing.

Nov 19, 2011 | Harman Kardon Audio Players & Recorders

1 Answer

The Limit Prot LED on my RCF Art-321A speaker remains on upon power up. The speaker also pops upon powering down. What do you think it could be? Thanks


The amp is blown. Some popping on power down is NOT uncommon, but the protect LED means the pwer amp is out of balance which is ******* speakers. Take in for repair.

Aug 05, 2011 | ART 315-a Rcf Art 315a 2-way Proaudiostar

2 Answers

Trying to increase volume on car deck when doing so the amp just shuts off, then amp makes a burning popping sound and smells like something burnt up and 3 sec later amp kicks on and still works, none of...


Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty. Please check impedance on speakers as they coyld be fried as well. A thumbs up would be greatly appreciated if this answer is helpful to you

trying-increase-volume-car-deck-when-otfyjrky3pc2prtgltcdyqtn-3-0.jpg

Oct 03, 2010 | Orion HCCA-D2400 Car Audio Amplifier

2 Answers

MY KICKER ZX 750.1channel amp "FLIP FLOPS" from protected mode(red light) to normal (green light) every 2 seconds.


Are you getting any sound output at all from amplifier?
Is there a popping or banging coming from speaker?
It could possibly be a faulty output mosfet that is ocillating cause DC to leak onto the speaker output causing it to flip into protect.
please advise
thanks,ben

Sep 27, 2010 | Kicker (ZX750.1) Car Audio Amplifier

1 Answer

I have a dual electronics 4 channel amp that goes into protect mode as soon as i throw power to it


unplug all the speaker from amp then power on. if you still have a protect light amp is bad and if you have no protect light continue to hook up each speaker one by one while amp is on till you get a protection light and that speaker would be the source of your problem

Jun 02, 2010 | Dual Car Audio & Video

1 Answer

When I turn the volume up even a little bit, the protect light comes on and stays on


Hiya,

Try disconnecting the speaker cables, then turn it up and see if it protects. If not, then connect one speaker at a time (on very low volume otherwise could pop the amp) and see if you can identify a faulty speaker/channel. Then try a known working speaker on the amp channel that is giving problems (to eliminate a fault with the amp). If the known working speaker also trips the amp, then it is that channel faulty. Hopefully you get away with a bad speaker wire though!!

Best of luck

Jul 15, 2009 | JVC KS-AX4550 Car Audio Amplifier

1 Answer

Protection light


Disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.

Jan 15, 2008 | Volfenhag ZX-7180 Car Audio Amplifier

1 Answer

Green LED comes on then fades out


This is common when the output transistors have failed. The amp powers up and the amp senses a problem and goes into protection mode. Generally, there is a protection LED but not all amps have them. To be sure that the problem is not installation related, check the DC voltage across B+ and ground when the amp tries to power up. If the voltage remains above 11 volts, the problem is almost certainly due to a failed component in the amplifier. Disconnect the signal lines and all speakers (disconnect the wires from the amp terminals) and try to power it up. If it powers up, you could have a defective speaker or defective wiring. If the amp still fails to power up, the amp should be checked by a qualified tech.

Sep 10, 2007 | Crossfire VR402 Car Audio Amplifier

2 Answers

Protection Light On


Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you didn't fry speakers as well. Please check speakers impedance. A thumbs up would be greatly appreciated if this answer is helpful to you

protection-light-otfyjrky3pc2prtgltcdyqtn-3-0.jpg

Nov 26, 2006 | AudioBahn A8000T Car Audio Amplifier

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