I just bought a pr. of amplified speakers,{small} only 30 wattr rms.I am putting these on my bike which is 12dc. The power supply that comes with then is 120vac down to 9vac.I took 1 speaker apart and seen that their was a circute to change it to dc.When I put my meter on the + - It showed 12 vdc,hummm So I unsolder the wires and installed my own wires that would connect to my 12 vdc battary.When I connected the amp. the led light went out and the amp,.shut of. I figured that I blew it out. So I disconnected my wires and connected the wires back like it was.Pluged it into the wall and turned on the amp. and it worked.So i didn't blow it out. I figure that it's running on 9 vdc well I know DC. So all I need is a droping resitor to drop it to 9 vdc. The transformer is 120 vac-9vac 500ma. Thank you very much. John e me at snipped-for-privacy@yahoo.com
Dropping resistor
Nov 18, 2006
6 Replies
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Full moon indeed.
hmmm Did you get the polarity right???
Dave M
MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
address)
Some days you're the dog, some days the hydrant.
Not here it isn't.
What about on the posters' home planets?
Good point.
If the OP connects it *before* the bridge rectifier,the polarity won't matter..just find another plug that fits,and wire it up.
Can your 12V supply on your bike supply 500ma+?
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