Question about Hifonics XX-Zeus Car Audio Amplifier

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Car AMP from subs making noise and only from AMP

When car stero is on or off the amp from subs make a low wine noise. It will go away if I like push or tap the amp itself...

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ou may have damage to the circuit board in the amplifier. If it is a whining sound it could be coming through the subs without you realizing it. Are your RCA cables and power cables separated from each other by at least 18 inches?

Posted on Nov 21, 2014

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  • Master
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There may be a cracked solder joint on the main PCB.
also - check the wiring.
There should be no noise if the radio is off.
When it's on - remove the RCA cables... and see if the noise persists.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

Posted on Dec 11, 2009

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1 Answer

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

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I have a few problems. i have 2 amps and 4 subs. first problem is when i connect one amp to my speakers it just hisses and crackles. this never happened before. when i turn up the gain to try and get...


The first amp, sounds like there is straight power going through the gain instead of it being limited. The second amp...hook the other subs up to it and see if it sounds ok. If so, then the subs are messed up. If it sounds the same, make sure the subs are connected correctly.

Oct 21, 2009 | Car Audio & Video

1 Answer

Amp wire pushin to much base out of car speakers and not to subs


Umm.. subs are usually meant for bass. do you mean amp power wire? if you just want to be able to hear the mid's and highs better just turn the bass down either on the equalizer on your amp or on your cd player.

Jun 27, 2009 | 1996 Ford Thunderbird LX

2 Answers

Noise in my car amp.


sounds like you have a bad ground going to your rca's. try running a wire from ground to the shield of your rcas and see if the noise goes away.

Apr 19, 2009 | Rockford Fosgate Power 1050S Car Audio...

1 Answer

Jl audio 500/1 amp low ohm light at high volume


I would try running the subs in parallel. Pos to Pos Dual Voice, Neg to Neg Dual Voice. Then Run + to + stereo - to - stereo on both channels.
So you have + and - running to one channel and + and - running to the other channel.
Also your LPF filter could be set too high.

Feb 07, 2009 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

Problem with amp?


Give that new sub a chance to "break in". New speakers require a few hours of use before the voice coil(s) and spider break in and began operating at their best performance. Is the box within the operating specs of the sub? Is this a ported box; if so you will here some turbulance type noise from the port. What type of distortion are you hearing? Alternator noise(dentist drill like sound) would only be noticable through a sub at lower volumes due to the frequency response of a sub. Is the amps lowpass crossover turned on?

Mar 08, 2008 | Sony Xplod XM-1652Z Car Audio Amplifier

1 Answer

Kenwwood amp will not turn on


u need a capacitor and a new battery. the capacitor stores reserve power to power the sub and ur old battery isn't producing enough juice for the amp so get a new one

Jan 09, 2008 | Kenwood KAC-9152D Car Audio Amplifier

3 Answers

12w3v2 Started making distorted bass noise at low volume


Connect each speaker coil one at a time to a square 9 volt battery and watch for the cone to move.

Also try hooking another speaker to your amp just to make sure the noise isn't in the amp.

You can use a 9 volt battery to test wire polarity also. Hook up the + wire of the speaker to the + terminal of the battery and the - speaker to the - battery terminal. If the speaker moved UP or OUT then the wiring is correct. If it moved IN or DOWN then the + and - wires are backwards on the speaker.

Also if you have two or more speakers hooked together test all the same way while they are hooked to each other. ALL of the speakers need to move in the same direction at the same time.

Clipping causes more speaker damage than anything. "Dirty Power" can happen in good quality amps too. The gain control is to match the voltage between the headunit and the amp. It is NOT a volume or boost knob. If you overdrive the first stage of the amp and then clip it damage will occur to the amp and speakers at some point.

Hope this helps.

Jan 04, 2008 | Jl Audio 12W3 Car Subwoofer

1 Answer

Car Sub JL 12w3 low sound


So I am assuming that you have just setup/wired this up recently? Have you had this working before?
You can have a look at the gain control on the amp & see if this have been set really low. This will help if the signal coming from your stereo is weak. The other thing I would suggest is to make sure that the amp can actually push this sub. I know what the specs say:

  • 1 channel audio amplifier
  • 1 x 350W RMS @ 1.0% THD
  • ThermalThrote full-on power assurance
  • 2 ohms stable (non-bridged mode only)
  • RCA type inputs
  • 0.3-6.0 VRMS input capability
  • Continuously variable High-Pass & Low Pass 50-250 Hz
  • Continuously variable Bass Boost settings (0 tp +12dB)
  • Frequency responce: 10-30,000 Hz
  • S/N >104 dBA at full power @ 0.1% THD
  • >80 dBA at 1W/1M
  • Remote gain control, mounting hardware & screws included
but I don't believe most of these. Many manufacturers embellish what their products can actually do! With the bigger more established brands such as JL Audio you will have no problems, their products have been tried & tested so much on the competition circuit.

Dec 15, 2007 | Jl Audio 12W3 Car Subwoofer

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