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  #1  
Old 09-01-2018, 01:42 PM
harlowe harlowe is offline
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Default rear speaker issues

So I have a 2002 extended cab, aftermarket radio for a year, aftermarket rear speakers with adapter plugs so no taping to the speakers since december, but still stock up front. A week ago I lost the rear speakers, just driving and they cut out. I went through and retaped my radio connections, replaced every fuse that says audio or radio and still nothing- anyone have any ideas?
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Last edited by harlowe; 09-01-2018 at 02:32 PM.
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  #2  
Old 09-01-2018, 11:38 PM
Undrstm8ed Undrstm8ed is offline
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Default Re: rear speaker issues

so did the display and front speakers still work?

If so, WHY in the world would you think its a fuse? [sigh]...


So if I am under correct assumption and the radio and the front speakers still work, we'll cut out the middleman problem by disconnecting one of the front speakers and both rear speakers. Watch your connections so you dont ground anything out and with just finger-connections [hold the wires] touch positive to positive and negative to negative.

Speaker work? Rear output of radio may be blown or an incorrect load may be applied [Wrong wiring (parallel vs a series connection) causing a thermal shut down, internal issue, inexpensive radio and QC got you a years worth of value.

Speaker not work? Possible a disconnection behind radio (may be resolved with first step), possible other mechanical interference, wire pulled out at speaker cone / terminal / connection points.

2nd form of speaker checking DVOM or if unavailable.. a AA or AAA battery will be able to "Burp" the speaker in at least one direction in which you would have to switch battery polarity to get the other direction if there is a cap, coil, both, or a Crossover attached.

if you have no power to the head unit then we'll have to consider other concern points.

let us know
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Last edited by Undrstm8ed; 09-02-2018 at 12:04 AM.
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  #3  
Old 09-02-2018, 02:27 AM
harlowe harlowe is offline
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Default Re: rear speaker issues

I originally pulled the fuses to the radio to check for corrosion, saw that one truck fuse was labeled as audio and GEM radio, and another as just audio so I assumed that the fuse for GEM and audio was the front speakers and radio to lessen the load on the 7.5 amp fuse.

so you're saying that the entire issue may lie in the headunit itself? it's functioning correctly to the front, when I was checking the wires I was sure to tape so it shouldn't be possible to short out, about an of tape going past the connection in both directions

I've got a volt meter somewhere to see that my next step was going to be to check adaptor wires to speakers for power, however if the problem is inside of the radio that probably won't show as getting power?


Quote:
Originally Posted by Undrstm8ed View Post
so did the display and front speakers still work?

If so, WHY in the world would you think its a fuse? [sigh]...


So if I am under correct assumption and the radio and the front speakers still work, we'll cut out the middleman problem by disconnecting one of the front speakers and both rear speakers. Watch your connections so you dont ground anything out and with just finger-connections [hold the wires] touch positive to positive and negative to negative.

Speaker work? Rear output of radio may be blown or an incorrect load may be applied [Wrong wiring (parallel vs a series connection) causing a thermal shut down, internal issue, inexpensive radio and QC got you a years worth of value.

Speaker not work? Possible a disconnection behind radio (may be resolved with first step), possible other mechanical interference, wire pulled out at speaker cone / terminal / connection points.

2nd form of speaker checking DVOM or if unavailable.. a AA or AAA battery will be able to "Burp" the speaker in at least one direction in which you would have to switch battery polarity to get the other direction if there is a cap, coil, both, or a Crossover attached.

if you have no power to the head unit then we'll have to consider other concern points.

let us know
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2002 Ranger Edge
Ex-cab, step side
4.0L V6, 4x4
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  #4  
Old 09-02-2018, 07:43 PM
Undrstm8ed Undrstm8ed is offline
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Default Re: rear speaker issues

Quote:
Originally Posted by harlowe View Post
I originally pulled the fuses to the radio to check for corrosion, saw that one truck fuse was labeled as audio and GEM radio, and another as just audio so I assumed that the fuse for GEM and audio was the front speakers and radio to lessen the load on the 7.5 amp fuse.
I's be willing to bet one for radio is just that, the audio radio. The GEM may have some feature running through it that maybe talked to the radio as a latching relay when Key/Off, until a door opened originally but should be separate otherwise.

And to be honest... look at an 25x4 amplifier and then look at any aftermarket radio and ask yourself why the heat sink is 4 times the size for the same power? lol, the 7.5a fuse can handle all the current draw.

Quote:
Originally Posted by harlowe View Post
so you're saying that the entire issue may lie in the headunit itself? it's functioning correctly to the front, when I was checking the wires I was sure to tape so it shouldn't be possible to short out, about an of tape going past the connection in both directions
Could be a blown rear channels.. I think you have a few more things to check before we fully concern ourselves that the head unit fully took a crap on you.

And well depending on how secure the wires were twisted pair, you might be discouraged but happy to find a wire or two got tugged on and its just a simple connection issue. And not to insult you, but you did check to make sure the fader was in the center for the most part correct?

Quote:
Originally Posted by harlowe View Post
I've got a volt meter somewhere to see that my next step was going to be to check adaptor wires to speakers for power, however if the problem is inside of the radio that probably won't show as getting power?
well just check for Ohms or continuity.. if you cant read either there's a broken wire or burned up voice coil.
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  #5  
Old 09-03-2018, 10:04 AM
harlowe harlowe is offline
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Default Re: rear speaker issues

The fader was one of my first stops in my list because my girlfriends monster of a younger sister loves to push every button she can find and is regularly in my truck, thanks in advance for the info though

Quote:
Originally Posted by Undrstm8ed View Post
And well depending on how secure the wires were twisted pair, you might be discouraged but happy to find a wire or two got tugged on and its just a simple connection issue. And not to insult you, but you did check to make sure the fader was in the center for the most part correct?
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