Support and General Use > Hardware
Hardware that DEFINITELY works in car mode?
saratoga:
The e200v1 doesn't directly couple the headphone jack, so its resistant to bad wiring. The newer Sansa players cut off the audio to keep you from burning up the player, but they won't work until you fix the problem.
Crafty:
To drive a speaker coil both + and - voltage are needed to push the diaphragm in and out.
imo, the Clip regulate battery voltage to 3vdc and 1.5vdc. The regulated 1.5vdc becomes the ground. It's a cheap powersupply.
batt regulated 3.0v-------------- +1.5v
regulated 1.5v------------ ground (device output jack)
batt ground --------------------- -1.5v
Some car stereos isolate their power supply and/or aux in....some don't.
USB stick radios start at $80. They may need a playlist maker because some new car stereos don't support playlist......ipod contract maybe.....does anything with the 'i' logo support playlist?
bryguy:
So if I were to take my car into a car audio shop and ask them to fix the ground problem, would they likely be able to fix it, or is this a flaw internal to my stereo? For the record I have a 2005 toyota matrix and an aiwa cdc-z137 (I think, the picture matches after a quick google search).
Any advice on how to phrase my request for a technician to try to fix this would be awesome.
saratoga:
--- Quote from: Crafty on April 05, 2013, 02:38:14 PM ---To drive a speaker coil both + and - voltage are needed to push the diaphragm in and out.
imo, the Clip regulate battery voltage to 3vdc and 1.5vdc. The regulated 1.5vdc becomes the ground. It's a cheap powersupply.
batt regulated 3.0v-------------- +1.5v
regulated 1.5v------------ ground (device output jack)
batt ground --------------------- -1.5v
--- End quote ---
I think you have the right idea about the ground on the stereo, but its not the battery that is the problem here. A battery floats, so by definition it can't impact the ground. And thats why the player will work fine until you plug in the USB adapter and go from battery to the car's power supply. In that case you're not longer floating, and the choice of ground matters a lot.
I guess an isolator or high pass filter would fix this problem.
Crafty:
The problem is when the you plug the Clip into the aux-in and cigaret charger. This can causes a short between the device jack ground and the device battery ground if the car battery and/or car stereo aux-in jack is not isolated. The device's -1.5vdc supply goes to 0vdc and the device can't opperate.
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