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Xo vision hooked up in 2001 Altima. Everything works, even amp green light on with no protect, but no sound from subs

Posted by Woody Barringer on

  • Woody Barringer Oct 11, 2019

    Only 1 subwoofer output so have y connector attached to rca

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brian williams

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Try another rca output on stereo

Posted on Oct 10, 2019

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Anonymous

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SOURCE: jl 500/1 no sound, green light

This is an indication that the MOSFETs are ok but the driver stages may have a problem. Get a schematic find the pre-amp stages and test the voltages levels there as compared to the schematic. I do believe that you will find the problem in the pre-driver pre-amp atages.

Posted on Sep 06, 2007

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Anonymous

  • 3 Answers

SOURCE: XO Vision Xod1911

I think i had the same problem... I think the mute is on on your system...go into setup and down to default and reset everything...if your sound comes back then the problem lies within the back. You would have to un-attach the brown cord (tel-mute), After that it should work. This is the problem i had and this was the fix for me. Hopei helped

Posted on Jan 06, 2008

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I have checked all connections to my amp battery,head unit,remote or trigger wire,fuses,power cable,rca leads,ground wire,amp has a green led light on it indicating if it works ok,red if it`s not,light...

Your amp could be in protection mode! Sometimes turning up to high or wires touching will put in protection mode! It will have to be unplugged for a day or two to drain all power out of the memory. Leave accessorie/ignition wire hooked up, just not power and ground wiring. It should reset itself.
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I have all the wires running right but for some reason my amp is not picking up or pushing my subs. could the rca jacks be messed up on the stereo?

According to the specs for the xo 1945- the output is; 50W x 4 Max Power Output , and I do not see a pre amp output listed. So I think to connect subs, you will need a separate AMP.
The way this works; the rear speaker wires from the xo 1945 hook into the Add-on amp, for example a 4 channel amp. In a 4 channel amp, the rear speakers come off two of the channels of the add-on, and the subs come off the other two channels. There is also the option of bridging two channels for more output power to ONE sub.
You did not mention what size sub(s) you were thinking of adding, but keep in mind that the ox 1945 puts 50 watts MAX per channel. So, if you add two 12" subs and a 1500 watt amp to drive them, your total sound is going to be very uneven.
If you go on line and look up auto audio or amps, you'll get a good idea of all the Sub and amp options that are available.... Hope this helps.
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No sound

You need to buy an amp adapter. SCOSCHE OEA4 4-Channel Adjustable Factory Amplifier Int. 23 bucks on ebay. You most likely have a factory amp in your car and the head unit's speaker output wires are already amped. the factory amp can't understand the audio signal.

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Red light

something is shorted in the circuit, or your subs. unhook the subs first and try it again, if it is still in protect then it is most likely the output transistors.
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You will need to show it to a service technician as it seems the output section has blown so it remains in protect mode. One reason (could be) that the input to the amp was high and may have been clipping for some time before the amp decided it could take it no more
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XO Vision Xod1911

I think i had the same problem... I think the mute is on on your system...go into setup and down to default and reset everything...if your sound comes back then the problem lies within the back. You would have to un-attach the brown cord (tel-mute), After that it should work. This is the problem i had and this was the fix for me. Hopei helped
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Car audio

hi, your amp seems to be getting power but the cables might be wrong so it's not getting enough power. the light on the amp should be green if everything is going well. are you sure the cables are suitable for your amp?
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Amp not working

1. Did you witness this amp ever working if not then you may have a blown amp. Hook up the speakers, get a portable player with a head phone jack get one of those cables with a headphone plug on one end and RCA's on the other plug the portable player into the amp and hit play. If sound comes out then your problems are elsewhere. If not I'm afraid your amp is probably toast. If the OHM rating of the speakers are too low for the amp then the amp will go into protect. This will be indicated by the protect LED lighting up or the power led changing color from say green to red.
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