Strange issue with L7 and alpine amp

335R1 · 04-19-2010, 09:15 PM

I had rockford fosgate prime amp 2 months and it worked fine. Then all of sudden the amp would intermittenly shut off. Bass would start cutting out when it's about to hit. Order a new rockford amp last week and same thing happened. Just installed the Alpine amp today and something strange is happening. With the trunk open, the sub works fine. With the trunk closed, i'd get a continuous feed. A constant signal. The sub would just rumble nonstop. What gives?

fdriller9 · 04-19-2010, 09:35 PM

How is it setup? Are you using a loc? I had a problem where bass would cut out randomly. I found out it was loose ground.

335R1 · 04-19-2010, 10:50 PM

my younger brother is a certified installer and even this has him stuped. He used a LOC, tested the ground and all connections. They all looked fine. I have constant power now. The problem now is the sub would rumble non stop with the trunk closed.

Lee Rambler · 04-20-2010, 07:29 AM

grounding issue of the loc itself - it may be common ground internally. try a different brand loc.

335R1 · 04-20-2010, 08:50 PM

Went through three loc. It's just starting to get ridiculous.

Lee Rambler · 04-21-2010, 07:02 AM

do your underseats cut out as well?

04-19-2010, 09:15 PM	#1
335R1 Private First Class 34 Rep 108 Posts Drives: F30 335i Join Date: Dec 2009 Location: Connecticut iTrader: (0)	Strange issue with L7 and alpine amp I had rockford fosgate prime amp 2 months and it worked fine. Then all of sudden the amp would intermittenly shut off. Bass would start cutting out when it's about to hit. Order a new rockford amp last week and same thing happened. Just installed the Alpine amp today and something strange is happening. With the trunk open, the sub works fine. With the trunk closed, i'd get a continuous feed. A constant signal. The sub would just rumble nonstop. What gives?
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04-19-2010, 09:35 PM	#2
fdriller9 Banned 260 Rep 7,089 Posts Drives: '06 AW 330xi Join Date: Mar 2009 Location: North Jersey/Philly/NYC iTrader: (4) Garage List 2006 330xi [6.44]	How is it setup? Are you using a loc? I had a problem where bass would cut out randomly. I found out it was loose ground.
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04-19-2010, 10:50 PM	#3
335R1 Private First Class 34 Rep 108 Posts Drives: F30 335i Join Date: Dec 2009 Location: Connecticut iTrader: (0)	my younger brother is a certified installer and even this has him stuped. He used a LOC, tested the ground and all connections. They all looked fine. I have constant power now. The problem now is the sub would rumble non stop with the trunk closed.
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04-20-2010, 07:29 AM	#4
Lee Rambler Captain 17 Rep 605 Posts Drives: 07 e92 335 6mt, 04 e53 x5 4.4 Join Date: Mar 2007 Location: PA iTrader: (0)	grounding issue of the loc itself - it may be common ground internally. try a different brand loc.
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04-20-2010, 08:50 PM	#5
335R1 Private First Class 34 Rep 108 Posts Drives: F30 335i Join Date: Dec 2009 Location: Connecticut iTrader: (0)	Went through three loc. It's just starting to get ridiculous.
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04-21-2010, 07:02 AM	#6
Lee Rambler Captain 17 Rep 605 Posts Drives: 07 e92 335 6mt, 04 e53 x5 4.4 Join Date: Mar 2007 Location: PA iTrader: (0)	do your underseats cut out as well?
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