Jchandler1980
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- Jan 29, 2022
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- 44
I wonder how the front door speakers could be out of phase with the dash with the understanding that they are wired in parallel. ???I used to work in a stereo shop. I installed window tint and custom stereo systems including impedance matching amplifiers, speakers, and head units for the best sound for the money. Even with that experience, this is the most confusing stereo system I've ever messed with. For everybody else looking for a TLDR, here you go:
I upgraded my four 6 x 9 speakers in my doors. I intentionally did not upgrade the speakers in the dash because I've read about the phase matching issues others have had.
I wired all four 6 x 9 speakers in accordance with the factory wiring diagram (+ to +, - to -). I had a horrible drone sound in the cab caused by the ANC as others have discussed (and they just sounded like **** overall). All 4 were OUT of phase (+ showed up on screen) with the dash speakers when checked with the "Speaker Pop" app (best $5 you could spend for this IMO).
The 3.5" dash speakers were both inverted in phase (- shows up on screen). I have to assume they knew what they were doing from the factory which is why they were wired inverted/reversed.
I wired all 6 speakers inverted/reversed and then verified they were all in phase with each other using the Speaker Pop app (all speakers showed "-" on the screen). After doing this, all drone issues caused by the ANC went away and the speakers sounded nice and clear with the amount of bass I was expecting.
Why they would produce a diagram indicating "positive" but want you to hook it to the "negative" will never make sense to me. Engineers just gotta engineer sometimes.
I'm just sharing my experience in hopes it will save somebody else some time.