Alpine Amp Problem

Phat beats and out-of-luck crooks. Again, read the Disclaimer first.

Moderator: The Mod Squad

Alpine Amp Problem

Postby ee904age » Mon Oct 07, 2013 6:40 pm

Not quite car audio, but near enough. I have an Alpine MRV-1505 mounted in a boat running a 12" sub. It's always worked flawlessly until today. It hasn't been used since Easter and today after charging the batteries and powering everything up, the green power light flashes and I get nothing from the sub.

After a bit of googling it seems to be in protection? Where do I start looking for issues? All connections seem fine, since the boat is fibreglass both the positive feed and earth are run off the capstan winch feeds, that are 35mm2 welding cable from the battery in the back to the cabin in front. Battery reads 13.2v at the fish finder so I don't think that's the issue.

I've read that it could be RCA related, could it be that the terminals are corroded inside either head unit or amp? Neither are marine units but they are kept away from any water or salt spray.
90 SW20 Turbo - Project
90 SW20 N/A - Sold
User avatar
Toyspeed Member
Posts: 1388
Joined: Tue Dec 16, 2003 6:27 pm
Location: Wanganui

Postby simonlenihan » Mon Oct 07, 2013 8:18 pm

Try disconnecting the RCA's and speaker wiring and see if that makes a difference.

Have you checked the impedance of the sub at the box and at the amp?

Wouldn't hurt to check voltage at the amp with a meter too.
2011 Toyota Hiace ZL

1994 BMW 740iL e38
User avatar
Toyspeed Member
Posts: 90
Joined: Tue Jun 11, 2002 11:36 am
Location: Wellytown

Return to Car Audio / Security

Who is online

Users browsing this forum: No registered users and 1 guest

Fatal: Not able to open ./cache/data_global.php