Tip & How-To about Car Audio & Video

Car amplifier troubleshooting

No output:

  • Confirm that all terminal strip connections are firmly connected.
  • Check in-line and built-in fuses. Both +12V and RMT terminals must have +12V to chassis ground.
  • Confirm that signal source ( Car Radio/Deck, EQ, X-over etc) is connected and is supplying output signal.
To confirm that Amplifier is working, connect an RCA patch card to LEFT& RIGHT low-level inputs of Amplifier only ( Do not connect the other end of the patch card).Briefly tap the center pin of each ( disconnected) RCA plug on the other (disconnected) end with your finger. This should produce a noise (feedback) in the speakers.

If this tip in anyway helped you please do not forget to rate it, thanks.

Posted by on

Car Audio & Video Logo

Related Topics:

Related Questions:

1 Answer

Help with 12v Frontier timer

This is Intermatic PB series timer module adapted for various applications, often low-voltage AC and DC loads. Copy following links for specific wiring diagrams:
Timer can be wired for numerous applications.
Power is connected to terminals 1 and 2, jumper wire is connected from terminal 1 to terminal 3.
Load wires connect to either terminal 4-5, and to terminal 2.
For loads greater than amp rating, use timer to control contactor. Add line fuse to protect timer from overampping.

May 04, 2013 | Hardware & Accessories

1 Answer

battery is fulling charge, altantor is new, but have no power what could be wrong

Check battery terminal posts are clean and firmly attached,
Check +12v supply fusible link (and/or in line maxi fuse) is not blown,
Check battery ground and chassis ground connections are in good order.

Oct 07, 2009 | 2000 Chevrolet Blazer

1 Answer

system is completely dead, won't start, won't even crank over

1) Check your battery condition. Ensure it is charged and serviceable,
2) Check battery terminals are clean and firmly attached - not corroded.
3) Check battery ground connection is intact and firmly attached to frame earth.
4) Check +12V cable is properly connected to starter motor,
5) Check condition of 'fusible link' or master power fuse,
6) Check 12V power is available at the main power distribution / fuse panel.

Aug 03, 2009 | 2007 Saturn Aura XR Sedan

1 Answer

no power no sound

this may be because there is no signal going to the RMT terminal on the amplifier. try connecting a +12v line, this line tells the amp to turn on. it is normaly connected to the header unit of the car so that it will turn on the amp when the unit is powered on.

Dec 27, 2008 | Boss C550 Car Audio Amplifier

1 Answer

trying to hook my amp up in my car, I already have everything but the main power supply which is the wire to the battery.I was wondering how would i do that the right way?

the car amp needs to be wired using a +12 power, ground, and +12v signal (rmt) cables.  the +12 volt cable needs to be connected from the posative terminal of the car battery to a fuse (the right size should be written on the amp somewhere) then to the +12v on the amp. the ground cable needs to be connected to the negative terminal of your car battery. the RMT is the more complicated one, this needs to be connected to the header unit or the ignition switch. if you look in the instructions for your header unit (the unict where you insert CD's or tapes etc) this should explain whewre exactly to connect this cable. or you can connect it to the terminal on the ignition switch which becomes live only when you turn the key, should be the third one in. this line basicly tells your amp to turn itself on when it recieves a 12v current. you can also wire it up to a manual switch directly from the battery by connecting another cable to the posative terminal of the battery then to a switch then to the RMT terminal of the amp.

Dec 27, 2008 | Scosche Industries EFX Amplifier Wiring...

Not finding what you are looking for?

623 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4944 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers


Level 3 Expert

79865 Answers

Are you a Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions