I recently bought a 1987 Vert with Premium Sound with fader back in November. Since then I've been replacing various things that the previous owner had neglected for years......Timing belt, fuel pumps, relays, etc....My next thing on my fix-it list is the stereo.
The problem: Only left side speakers work well (and the front is about twice as loud as the rear). To hear the right side speakers at all I have to turn the balance all the way to the right.
L -------C-----*-R
The * is where I have to put my balance if I want equal sound. I don't actually do that, I just have been suffering with the functioning speakers I have so far.
I suspect either the 20+ year old head unit or the almost 30 year old factory amp is causing the issue, but I just want to double check on some of the wiring at the back of the head unit.
Head unit is aftermarket. Pioneer KEH-2200QR cassette deck. Likely installed in the early 90's. I pulled it out and there was a delightful rats nest of non-uniform length wires. I cleaned it up as best I could.
Amp is factory, not bypassed. I have two brown/black wires coming from the dash, one thicker than the other.
I cut the fader out and wired up all the positive speaker connections to rule that out as a possible culprit. The speaker positive colors in the Amp Bypass thread were the same as in my car so that was easy.
Here's the really interesting part - there are three solid black wires on the back of the head unit and two solid red wires. The previous owner has the two solid red wires connected to the Violet/White in the dash. Two of the black wires are in a pin spot that might make them seem like speaker negatives (there are only two other speaker negative wires on the HU harness) and each have one of the black/brown wires connected to them. The other black wire is at the other end of the harness, is about 4 inches long and bolted directly to the head unit cage.
Could the way this is wired be affecting the left/right balance of the stereo? I am thinking that the black/brown wires should also be bolted to the cage?
Sorry if any of my writing is confusing.....
Please halp!
- Joe
The problem: Only left side speakers work well (and the front is about twice as loud as the rear). To hear the right side speakers at all I have to turn the balance all the way to the right.
L -------C-----*-R
The * is where I have to put my balance if I want equal sound. I don't actually do that, I just have been suffering with the functioning speakers I have so far.
I suspect either the 20+ year old head unit or the almost 30 year old factory amp is causing the issue, but I just want to double check on some of the wiring at the back of the head unit.
Head unit is aftermarket. Pioneer KEH-2200QR cassette deck. Likely installed in the early 90's. I pulled it out and there was a delightful rats nest of non-uniform length wires. I cleaned it up as best I could.
Amp is factory, not bypassed. I have two brown/black wires coming from the dash, one thicker than the other.
I cut the fader out and wired up all the positive speaker connections to rule that out as a possible culprit. The speaker positive colors in the Amp Bypass thread were the same as in my car so that was easy.
Here's the really interesting part - there are three solid black wires on the back of the head unit and two solid red wires. The previous owner has the two solid red wires connected to the Violet/White in the dash. Two of the black wires are in a pin spot that might make them seem like speaker negatives (there are only two other speaker negative wires on the HU harness) and each have one of the black/brown wires connected to them. The other black wire is at the other end of the harness, is about 4 inches long and bolted directly to the head unit cage.
Could the way this is wired be affecting the left/right balance of the stereo? I am thinking that the black/brown wires should also be bolted to the cage?
Sorry if any of my writing is confusing.....
Please halp!
- Joe
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