Question about Metrik Amplifiers MAX-1202 Car Audio Amplifier

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I get engine noise when i use all 4 channels on my amp. what could cause this?

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Check on radio shack and get a ground loop isolator and that will be solve your problems

Posted on Nov 11, 2010

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I have a ADF-242 that is having sound output problems


If the car was running when testing sub and heard noise this could be engine noise and an inline filter would cure that problem and also have a good ground no more than 15 inches away from the amp.And good metal contact for ground.

Jun 06, 2010 | Audiofonics ADF-242 Car Audio Amplifier

1 Answer

There is a engine noise coming out from my speakers


(1) If you have an ohm meter check from neg terminal of battery to body of your car. It should be below 1 ohm. You should get the same reading between the amp neg terminal and the amp ground point. Check amp ground with the power off and the wire to the negative on the amp temporarily disconnected. Most cars have a braided uninsulated ground strap from the engine to the body or frame. In older cars this can break and it usually causes noise. Run a temp ground wire from the battery neg to the bat neg of your amp, if the noise goes away it's a ground issue for sure.
(2) Make sure the amp is well grounded ! The bolts that anchor the seats to the floor are one of the best ground points I know of.
(3) I've fixed a few amps that had an internal broken connection from the RCA's on the amp where they connect to the circuit board. This often happens from not having the amp bolted down and/or the RCA's getting hit or kicked. This will cause noise in the amp and requires taking the amp apart to fix it.

Apr 02, 2010 | Solid Audio Formula Series F4 4-Channel...

2 Answers

How many watts is this amp


Specifications Power Output: 100 Watts RMS x 2 channels at 4 Ohms ≤ 1% THD+N Signal-to-Noise Ratio: 80 dBA (reference: 1 W output) Additional Power Output: 200 Watts RMS x 2 channels at 2 Ohms ≤ 1% THD+N
400 Watts RMS x 1 channel bridged at 4 Ohms ≤ 1% THD+N THD+N (Distortion): <0.25% (reference: 1 W output) Frequency Response: 20 Hz to 20 kHz (-3dB) Maximum Input Signal: 5V Maximum Sensitivity: 100mV Dimensions: 14.37 x 9.72 x 2.5 (365mm x 247mm x 63.5mm)

Jan 03, 2010 | MTX 4002 Car Audio Amplifier

1 Answer

Pioneer car audio amp GM 6300F (new)


Does your amplifier have a Channel swith which says 2/3/4 channel mode. If so and you are running the amplifier in Bridged mode, try changing the setting to 2 channel or Bridged mode.

Aug 20, 2009 | Pioneer GM-6300F Car Audio Amplifier

1 Answer

Why would i spend a 100 to 120 dollars on a car amp?


any amp will work with any speaker, you just need to make sure it is a mono amp if you are running 1 speaker and a stereo amp wither 2 or 4 channel if you are running 2 or 4 speakers, the ohm rating on the amp should match the speakers also, on the back of the speaker it has the ohm rating, most will be 8 ohm, but you still find some 4 ohm, depending on the speaker if it has a lot of throw (the in and out movement) you may want a higher wattage amp so you get clean sound, it is up to you.... if you are installing lower price amps to you may hear engine wine or noise while car is running so a grounde loop isolator installed on the system will remedy that... also with the amp the directions will tell you the ohm rating of the wire to use, follow that.... and keep the ground short and clean where ever you put it.. try not to go directly off the battery cause you will get a lot of noise... hope this helps..

Jun 23, 2009 | Pyle 2 Channel 4000 Watt High Power MOSFET...

2 Answers

Whinning noise when car is on and AUX is connected to ipod


ENGINE NOISE PLUG ALL YOUR RCA DIRECT TO AMP BYPASS EQ AND SEE WHAT HAPPEN IF THIS STILL HAPPEN CHECK ALL YOUR GROUND AND RCA MAKE SURE YOU HAVE GOOD CONNECTION

Mar 30, 2009 | Boss AVA-1215 5-Band Car Equalizer

2 Answers

Engine noise from Legacy 4000W 2 channel amp


Hi Justin,
Send me the specs. on the speaker ( voice coil impedance), amp, power wire size, and box
As for engine noise ( alternator whine) 99.9 times out of a hundred it's caused by what's called a ground loop, That will take a little trouble shooting on your part. It's no big deal. It will be a step by step process. All you need is two alligator clips or a old RCA cable.and a couple feet of wire. I'll try to get to it this evening,
Oh, and you will have to pull the head unit out of the dash... P

Jun 11, 2008 | Car Audio & Video

2 Answers

Sub woofer freq prob


Without hearing the noise, it's difficult to determine the exact cause. I've seen enclosures do this if the panels were not glued together well.

 

Try connecting the speaker to one channel at a time to see if one particular channel causes the problem.

Oct 12, 2007 | Car Audio & Video

1 Answer

Wiring


if you get a buzz or whine noise that changes on acceleration of the engine,,, for some reason your amp is picking up alternator "noise" the most common cause of this is a corroded/dirty/non bare metal/poor ground connection to the cars chassis form your amp.. recheck your connections and make sure! Another trick is to run the rca cables on the opposite side of the car as the power wire. Also if your rcas have a small wire in the center DO NOT USE IT FOR A REMOTE WIRE!!! it is meant to be grounded on both ends to eliminate noise. Also p.a.c.(pacific accessory corporation) makes a noise filter you can put inline betwen your rca cables and the amp. I have had some sccess with that..

Aug 22, 2007 | iLO XM-MP3-CD Car Stereo

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