Subs Work Intermittently - Forums at Modded Mustangs
 
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post #1 of 13 Old May 31st, 2013, 07:15 PM Thread Starter
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Subs Work Intermittently

When I turn my car on its a 50/50 chance the subs will be functioning. If they dont work I have to shut the car off and restart it maybe once or twice before they kick in. I havent looked at the brand of amp since I just got the car a few days ago. It looks like a very professional wiring job.. Any ideas? Thanks!
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post #2 of 13 Old May 31st, 2013, 07:40 PM
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Check all your ground wires,and RCA cables

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post #3 of 13 Old May 31st, 2013, 07:55 PM Thread Starter
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Also, when they do work, I can drive for a while and they never shut off or "flicker" over a bump or anything. If that makes any sense.. Ill check my ground and rca's. Dont bash too hard but the rca's are those connectors that plug into the amp correct? Usually color coded or brass?
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post #4 of 13 Old May 31st, 2013, 08:04 PM
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Lol yeah should be red and white

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post #5 of 13 Old May 31st, 2013, 08:30 PM Thread Starter
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Just checked all the wiring and now I cant get it to turn on period after several attempts... Ill post some pics here in a minute
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post #6 of 13 Old May 31st, 2013, 08:49 PM
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Ok

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post #7 of 13 Old May 31st, 2013, 09:04 PM Thread Starter
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Guess it wasnt as professional as they hyped it up to be. Im a noob when it comes to electronics but it seems like the wire that is frayed and only half connected is causing a power issue.
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post #8 of 13 Old May 31st, 2013, 09:10 PM
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Okay....

So the far left screw posts are the subwoofer outputs.... If this is a bridged amp, it should be Positive on the Left output and Negitive on the Right output... Or the other way around Right is positive and Left is Negitive.

The 3rd wire from the left, is the remote wire. Please go take that off and cut it and put a proper connector on it. Then measure if there is 12vs at that post when the head unit is on.

The next black wire is the ground. Again, please put a proper connector on that wire. And see where it is grounding to.

The farthest right wire is the 12V from the battery. It needs a ring terminal aswell. but make sure you take the fuse out of the wire up by the battery, or take it off the battery to put a connector on that wire.

Once you know there is 12Vs at the remote wire and the 12vs from the battery is good, the only other thing that could be bad is the RCAs or the ground. To make sure the ground is good, I always use it as a ground to measure voltage.

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post #9 of 13 Old May 31st, 2013, 09:26 PM
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weight reduction is ur friend.

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post #10 of 13 Old May 31st, 2013, 09:47 PM Thread Starter
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Quote:
Originally Posted by MustangMatt96GT View Post
Okay....

So the far left screw posts are the subwoofer outputs.... If this is a bridged amp, it should be Positive on the Left output and Negitive on the Right output... Or the other way around Right is positive and Left is Negitive.

The 3rd wire from the left, is the remote wire. Please go take that off and cut it and put a proper connector on it. Then measure if there is 12vs at that post when the head unit is on.

The next black wire is the ground. Again, please put a proper connector on that wire. And see where it is grounding to.

The farthest right wire is the 12V from the battery. It needs a ring terminal aswell. but make sure you take the fuse out of the wire up by the battery, or take it off the battery to put a connector on that wire.

Once you know there is 12Vs at the remote wire and the 12vs from the battery is good, the only other thing that could be bad is the RCAs or the ground. To make sure the ground is good, I always use it as a ground to measure voltage.
Good stuff man. Ill have to make a trip to the parts store and get to it! Thank you! Luckily, I have a multimeter laying around here somewhere.

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weight reduction is ur friend.
I know I know... The car came with it and sounds nice when it actually fires up
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post #11 of 13 Old May 31st, 2013, 11:08 PM
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I never was into stereos. I just got into them now that I have another nice daily driver. A single 12 tuned properly in a mustang with the right size box sounds amazing... My daily driver has higher end pioneer speakers all the way around and a 12 inch 1300 watt max sub 400 rms rating, with a matching amp. Thing is not annoying rattle the license late, but sounds awesome with the nice mids and highs coming from the speakers and all base coming from the sub

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post #12 of 13 Old June 26th, 2013, 12:19 AM
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Yea professional is a joke, electrical tape wrapped around the wiring like that? Also most pro's know using a bigger wire for the ground than you do the 12v to prevent speaker whine. Like another user said proper connector ends will go a long way and are safer. If they didn't put a fuse in the line near the battery with that setup you are asking for something back to happen.
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post #13 of 13 Old June 30th, 2013, 02:35 PM Thread Starter
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Originally Posted by maximusneo701 View Post
Yea professional is a joke, electrical tape wrapped around the wiring like that? Also most pro's know using a bigger wire for the ground than you do the 12v to prevent speaker whine. Like another user said proper connector ends will go a long way and are safer. If they didn't put a fuse in the line near the battery with that setup you are asking for something back to happen.
No worries! I have gone through and cleaned everything up with new connectors. Works great every time
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