Hey ive had the same problem for a little while, my entire speaker system wouldn't work unless the passenger side door was open, or i hit it when it was closed, my problem was that the wires were grounding out, just make sure you have neat and clean wire connectons in your doors, and you should be good.
you have a cut wire in the drivers side door wiring, they get opened & closed so much that wires get cut, open the black boot in the door jam & you'll find your cut wire.
A piano keyboard has keys, and a door needs a key to be locked and opened so a piano and door are alike because both have/need keys.
1999-2004, 2.5 inch in dash tweeters, 6X9 in front doors, 6.5 inch in rear doors, the upgraded infinity stereo has a 180 watt amp under the passenger side rear seat. The 6X9 front door speakers are for low frequency (bass), if you replace these with full range 6X9's you will only here bass, unless you tap into the tweeter wires in the dash and wire them into the tweeters on the 6X9's. the factory tweeters in the dash will distort and crack if played to loud, but they sound good at reasonable volume levels.
You probably have a wire in the harness by the door hinges that is almost broken in two.
Unless you want to pull door panels or know how to check speaker polarity, just buy the aftermarket wiring harness. It's about $15 and will save you time and possible complications from wiring something wrong.
when a door is "closed" it can not be opened by pushing or pulling
A door and a valve can be opened and closed.
; Front speakers : Front Door: 6-3/4" ; ; Rear speakers : Rear Door: 6-3/4"
2 front door speakers 2 tweeters in front doors 2 rear door speakers
6x8 Door Speakers (Front & Rear)
The front door speakers on a 2000 Pontiac Grand Am Se are 4x6. The rear deck speakers are 6x9.
the front door and back door speakers are 6" x 8 " speakers
An un-trapped door!
Front door speakers are 5 1/4".
Front door speakers - 6.5 rear speakers - 6x9
WD40
4X6 speakers