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Added an Arc Audio KS 900.6 amp to my boat this past weekend. already have a sony 4 channel running the tower, in boats were running off the head unit so it was time to get more power to those
when I ran the RCAs I noticed that whoever installed the tower speaker amp was using the left front and right rear outputs on the head unit. I reasoned that they may have had better voltage if pulling one side per channel instead of running both on the same channel. I get everything hooked (now running a set of RCAs on both output channels) and the amp starts throwing a short code. will eventually go into permanent protection where I have to use a 12v bulb to drain the amp completely then reinstall positive power lead.
Cleaned up the speaker wires to make sure there weren't any stray copper strands going anywhere causing the code. Then started researching possible issues with this amp. Arc Audio KS 900.6. Seems its very finicky with RCA voltage. It's a microprocessor amp, whatever that means. been out of the mobile audio game for a while....
HU is a Sony cheapo, wouldn't mind replacing it. But I don't want to start throwing $$ at things without a better idea of whats going on. Is there a way to test output voltage of the HU? Got a DMM just not sure how to use it on RCAs.
Also tried splitting channels of the head unit to get to 4 RCAs. no luck there. it will play just fine until I start turning things up, then the short code. any ideas?
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