Question about Nitro BMW-486 Car Audio Amplifier

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Same problem i have a 486 bridge green light before now red.

I have a 486 play loud and sound better than my punch p8002 ,but after 3 weeks ,while playing low the amp red light came on and never came off other amp works well ,what do you think the problem is i do not want to give this amp up what can i do

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  • 58 Answers

IF THE RED PROTECTION LIGHT STAYS ON MAINLY MEANS THAT ITS BLOWN, I HAD THE SAME PROBLEM BUT MY PROTECT LICHT DIDNT COME ON, IF U HAVE A WARRNETY ON U CAN USE.

Posted on Jun 18, 2009

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Posted on Jan 02, 2017

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My amp turns on good but after a while of too much bass causes a ugly sound too loud what could it be? Can it be repaired?


If you have over driven the amp by playing it real loud with the bass control turned up, it is very possible that you have toasted the output stages of amp.
Every time you boost a tone control by 3 db you have doubled the output power at that frequency. So if you are "coasting" along at a nominal 75 watts, the moment you boost the bass by 3 db the amp has to put out 150 watts at that low frequency.. Go to +6db and now the poor amp has to kick out 300 watts! And so on.

Rule of thumb - you never use your tone controls at very loud levels. Tone controls are there to compensate for the poor frequency response of the human ear at low volume levels - the Fletcher Munsen effect. At low volumes our hearing with the lows and high frequencies so when you play something at low volume you boost up the bass and treble to compensate for poor hearing. At loud volumes our ears respond properly.

Sep 12, 2015 | Car Audio & Video

1 Answer

Low volume on radio, I replaced the amplifier with an used one, but the problem still present. All channels are Ok.


When you tried play a cd and you got low volume with amp, 1. Try find a original cd and plays it see if the sound loud or low if it's still low you need lenses disc cleaner, to clean your decks lense.

Oct 15, 2013 | 2004 Acura TL

1 Answer

Peavey Valveking head strange feedback.


Sounds like one of your tubes going bad and becoming microphonic...


Google "Microphonic Tube" for additional info.

Oct 25, 2012 | Peavey Valveking Vk100 Guitar Head

1 Answer

What does a red light for powerline activity mean?


It indicates your line quality for the Homeplug - Green: Best, Amber: Better, Red: Good


Details here http://www.zyxel.com/uk/en/products_services/pla_401_series.shtml

Jul 16, 2012 | Zyxel PLA-401 v3 - Bridge - Ethernet, Fast...

1 Answer

Can you bridge the vega 124 or just use 1 channel on a punch 400x4


Here are the important concerns:
The power rating of the speaker(400W) should be 25% HIGHER than the maximum output of the amplifier BRIDGED. (Amp bridged output 200W - OK!)
The amplifier will get twice as warm running the speaker when loud.
The impedance of the speaker can be no less than 4 ohms when the amplifier is bridged. (Yes, this speaker is 4 ohms - OK!)
Your punch amp is capable of running TWO Cerwin Vega 124s, bridged.

Apr 02, 2010 | Cerwin Vega 124 Car Subwoofer

1 Answer

I play my music on low and it has bass wen i turn the radio up it starts hiting only certain bass notes the lowest dont hit hard it starts sounding weird???? i have it hooked to a audiobahn aw1206t...


sounds like you have some wires crossed. check your radio setting and make sure that the subs are only playing bass and no trebble. buy some new rcas

Mar 10, 2010 | Nitro BMW-486 Car Audio Amplifier

1 Answer

My nitro bmw-486 amp plays but want put out loud sound


I have the same exact amp. And my friend has the smaller 1600 watt amp, and this happened to his. Basically, just start from scratch. Unhook every single wire, and rewire it. If that doesn't work, look at the side of it, and there are a few knobs that you can adjust using a philips head screwdriver. Try adjusting the bass boost knob.

Jan 13, 2010 | Nitro BMW-486 Car Audio Amplifier

3 Answers

Red thermal light on


well id say you have cooked your amp and or subs they can only take beatings for so long. show it no mercy it gives it back,does amp smell do subs smell borrow amp see if subs are ok if so it will be your amp.new one .keep the gain down??

Jun 11, 2009 | Rockford Fosgate Punch P550.2 2-Channel...

1 Answer

Power is on ,but no light on the radio or sound


It would help to know specifics like models and if they ever worked correctly.

How long and how loudly are you playing it before all this happens?

Does the receiver feel unusually warm when it dies? If so, is there proper ventilation around the unit so it can cool itself?

What light on the radio goes off?

What light on the subwoofer are we talking about? Do you know what it means? It could be telling us that it has lost signal, not surprising if the receiver quits.

Better clues will lead to better answers.

Apr 24, 2009 | Audio Players & Recorders

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