Question about Xtant1.1i Series Mono Car Audio Amplifier

1 Answer

No sound out

Alright so I've got a 121m xtant amplifier feeding a 10" sub. It worked until recently. I've checked the rca cables and connections, they're good. The red light is on and no orange or yellow lights are on. I checked the voltage on the power supply and continuity to ground, all good. The confusing part is that when I check the voltage across the speaker outputs I don't get anything on my multimeter (in the mV range). I do get a varying mV voltage across the postive (or negative) terminal with respect to ground...

Not sure what is wrong here, checked the jumpers and everything looks good...

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 143 Answers
Re: No sound out

You should be getting a reading from the speaker terminal if you have it wired properly & the stereo is playing.

if you are testing the DC voltage 'ACROSS' the terminals you will not get a reading.

Test the pos terminal as you did the main feed...Black probe on earth terminal, red on the pos speaker terminal.

If you are getting a reading then try a different sub.

continuity test across the terminals of the sub & push on the cone if the buzzer changes on/off as you push on the cone the voice coil may be burnt? pump the cone up & down it may clean it a bit?

Posted on Dec 15, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Subs and amp sat in my garage for a year. I just

check your subs by connecting them straight from the stereo. If they work then there is an issue with the signal comming from the stereo through the rca cables to your amp, check those. Try another amp if you can with those rca's or test the amp with a friends car, either way try to rule out everything until it points to the problem.

Apr 17, 2010 | PPI PCX-2200 Car Audio Amplifier

1 Answer

MTX Thunder 3401 not responding. Lit but no sound.

turn down music open sub box and put another speaker at wire and check again if work means sub is ok if not check the signal cable, and put there the speaker to try signal

Apr 05, 2010 | MTX Thunder 3401 Car Audio Amplifier

2 Answers

One sub works other doesn't

Disconnect the wire from the speaker and meter it out. check it for a dead short, the meter would read 1..... You can also check the action of the sub by pushing on the center lightly, moving the cone. If it's blown, it will not travel smoothly. If your meter reads ......1 then you've really done it and totally cooked the wire clean thru, thus no resistance. Hope this helps.

Sep 29, 2009 | Xtant A3001 Car Audio Amplifier

1 Answer

Subs dont sound as loud as they did in old car

u can also check where you pluged the rca cables into the head unit make sure there in the right spot

Mar 03, 2009 | Performance Teknique ICBM-779 Car Audio...

1 Answer

Amp is shutting off after 10 min of driving!! please help!!

Does it happen at all volume levels?
What is the gain setting on the sub amp?
Have you checked for 12V @ remote turn on after problem occurs?
Sounds as if the remote turn on relay inside the amplifier is losing signal, or has become damaged. If the protection light does not light up, the problem is not thermal, shorting, or high/low voltage.
The amplifier is in need of repair. This is not an end-user fix. Looking at about $50 to repair.

Thanks for using FixYa- a FixYa rating is appreciated!!

Feb 18, 2009 | Profile BAJA HA700M Car Audio Amplifier

1 Answer

My sub flickers on and off in my truck!!!

could be a number of things loose wires bad ground fuse on its way out or internal problems

Feb 13, 2009 | Profile BAJA HA700M Car Audio Amplifier

1 Answer

RCA cable use

You can plug into the left channel and it will feed both the left and right channels.

To confirm that it's feeding both channels, connect the speaker to one channel at a time. With signal fed into the left channel only, you should get sound when you connect the speaker to either channel.

Apr 18, 2008 | Sony XM-754HX Car Audio Amplifier

1 Answer

Weak output from sub..

The woofer was not demagnetized.

If one signal cable is damaged, it could reduce the signal getting to the amplifier and could reduce the output.

Plug one RCA plug in at a time to confirm that both are working properly. If one is lower or not working, the cable may be defective.

If both work properly, double-check the settings on the head unit (sub-out, bass, crossover frequency...)

Oct 28, 2007 | Alpine MRP-M350 Car Audio Amplifier

1 Answer

Subs will go off the wall with bass, but not in tune with music.

hi, first disconnect the rca input, then switch on headunit and if the amp produces a constant bass thump it then means it has an internal fault. if the amp idles quietly then replace the rca cable, or try connecting the headunit lineout feed directly to the bass amp, in this way you cud find out if your fault is coming from the headunit or the equaliser. cheers

Nov 23, 2006 | MTX Thunder 8302 Car Audio Amplifier

1 Answer

Amp is on, Subwoofer works, but no sound.

here is a short test you can try, remove the rca audio cable from the amp & connect a diskman or toher audio o/p device that you can hook up with the same rca wires, turn on the amp & see if you have sound. you can also remove the speaker wires from the sub & using multi meter read the ohm's of the sub, most subs are 4 ohm. Hope this help locate your problem

Oct 24, 2006 | Pioneer GM-7200M Car Audio Amplifier

Not finding what you are looking for?
Xtant1.1i Series Mono Car Audio Amplifier Logo

145 people viewed this question

Ask a Question

Usually answered in minutes!

Top Xtant Car Amplifiers Experts

Tygh Duval
Tygh Duval

Level 2 Expert

290 Answers

Pablo Gonzalez

Level 3 Expert

733 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Xtant Car Amplifier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides