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Virginia Rocks!
Join Date: Oct 2003
Location: Just outside the beltway
Posts: 8,497
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Help me out with this amp!
Should be and easy one for you guys...
I put in a 2 channel blaupunkt amp amp for the fronts and added some tweeters. Last night (engine off) it didn't come on immediately. Second, third, etc attempts (engine still off) worked well. Today I'm buttoning up the work. No longer comes on line. I have checked the voltages at the terminals: Radio off: Hot/ground 12.39 or so V Ground/trigge: 0 V Radio on: Hot/Ground: about 10.39V Ground/trigger: 8.55 V I thought maybe the battery was dying so I started the car and I get similar Voltages and the amp still won't come on. Amp is wired directly to the battery 20amp fuse, 10 G wire. Amp is under the drivers seat (when I put the seat back in). Any guesses? I can't figure why the voltage would drop with the radio on (and engine on).
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Rosewood 1983 911 SC Targa | Black 1990 944 S2 | White 1980 BMW R65 | Past: Crystal 1986 944 na Guards Red is for the Unoriginal
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07-17-2005, 09:11 AM
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Virginia Rocks!
Join Date: Oct 2003
Location: Just outside the beltway
Posts: 8,497
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More data:
I have narrowed it down to the trigger. It seems I get less than 12v when the trigger is connected. But you need the trigger connected to get the amp to come on. When the trigger is disconnected I have 12V at the amp terminals. I tried jumping the trigger from a different switched power. No dice. But even with an internal fault in the amp I can't figure out why it would drop the voltage at the terminals. 
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Rosewood 1983 911 SC Targa | Black 1990 944 S2 | White 1980 BMW R65 | Past: Crystal 1986 944 na Guards Red is for the Unoriginal
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07-17-2005, 10:07 AM
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Registered
Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
Posts: 10,040
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maybe ther is a short somewhere?
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"A man with his priorities so far out of whack doesn't deserve such a fine automobile." - Ferris Bueller's Day Off |
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07-17-2005, 10:26 AM
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Virginia Rocks!
Join Date: Oct 2003
Location: Just outside the beltway
Posts: 8,497
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Apparently, the answer was a bad ground. 10 Gauge power requires a 10 Gauge ground. Who knew? (Not me anyhow).
Other lesson learned: don't hold sheet metal in your bare hand and try to drill a hole through it. Ouch.
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Rosewood 1983 911 SC Targa | Black 1990 944 S2 | White 1980 BMW R65 | Past: Crystal 1986 944 na Guards Red is for the Unoriginal
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07-17-2005, 01:13 PM
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