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Thread: Alpine MRV T707 blowing fuses like crazy |
    
New member Username: Xxxsoilworkxxx
Post Number: 1
Registered: Dec-04
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| Posted on Saturday, December 11, 2004 - 10:09 pm: |
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OK, i just got a system from my friend a few days ago and everything was fine until i decided to wire my subs in parallel instead of series. I dropped my resistance down to 1 ohm, drawing about 900 watts of powere (so ive been told) to my subs. Everything was all great until tonight, i was driving around and i blew both fuses on my amplifier...nothing really bothered me until i went and bought some fuses and they blew the second i turned my radio on. Thinking it might have been the way the subs were wired i re wired them in series, the way they were before, and tried it again...blew my fuses again. Then i tried each individual sub, and both times they blew the fuses. can anyone tell me what they might think it is? |
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Gold Member Username: Glasswolf
NorthWest,
Michigan
USA
Post Number: 6322
Registered: Dec-03
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| Posted on Sunday, December 12, 2004 - 01:39 am: |
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well, the subs sound to be ok. good job testing those out.
sounds like the amp may have been damaged.
is it a 1 ohm stable amp? If it's not rated for 1 ohm, and it doesn't have internal protection, it may have incurred thermal damage.
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New member Username: Xxxsoilworkxxx
Post Number: 2
Registered: Dec-04
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| Posted on Sunday, December 12, 2004 - 04:45 am: |
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it is a 1 ohm stable amp....i believe its 900W X 1 @ 1ohm...but,...just to be sure i re wired them to be at 4 ohms and it still blew the fuses...im beginning to think it might be the capacitor i installed so in the morning i will take the cap out of the circuit and see what happens then. |
Gold Member Username: Glasswolf
NorthWest,
Michigan
USA
Post Number: 6356
Registered: Dec-03
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| Posted on Sunday, December 12, 2004 - 03:52 pm: |
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let me know the results.
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Silver Member Username: Oleg
Santa Monica,
CA
USA
Post Number: 142
Registered: Nov-04
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| Posted on Sunday, December 12, 2004 - 11:35 pm: |
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I don't think removing the capacitor will change anything. What brand is this 900W @ 1ohm amp though? That may be the key |
Silver Member Username: Fryguy
Nova Scotia
Canada
Post Number: 403
Registered: Jun-04
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| Posted on Monday, December 13, 2004 - 12:10 am: |
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If it’s a faulty capacitor (the plates will short) it can cause a fuse to pop but it will pop the fuse before the amp not on the amp.
Note: I have seen large electrolytic capacitors blow up and shoot across the room! When they were wired wrong they gas and build up pressure. When they blow up they are very loud! |
Gold Member Username: Glasswolf
NorthWest,
Michigan
USA
Post Number: 6391
Registered: Dec-03
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| Posted on Monday, December 13, 2004 - 05:36 pm: |
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and the installers are very dumb.
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Silver Member Username: Fryguy
Nova Scotia
Canada
Post Number: 428
Registered: Jun-04
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| Posted on Monday, December 13, 2004 - 08:33 pm: |
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When doing production runs of circuit boards it happens. Sometimes it’s not caught by inspection before testing/calibration. Then it happens to explode shortly after power up by the technician (like myself). |
