Question about JBL Boating
The problem is simple if u were to read the JBL Powered Sub Manual. the JBL has a circuit that shuts down the amp if it detects a battery voltage of 10volts or less. with your two batteries strapped together its detecting the low voltage from your accessory battery rather than the full voltage of the secondary battery. fyi if u were to read the manual it does say to connect the black and red wires directly to your boats battery. id get a volt meter and with the boat and all its accessories running check the output voltage of each battery. which ever battery has over 10v thats where u want the amp hooked up....
Posted on May 14, 2012
If a boat is anything like a car, the amp's negative post should not be connected to the battery, but to the ground of the boat. In a car, the entire chassis is grounded to the negative terminal, so when you run a line from the positive terminal of the battery to the positive post on the amp, and a line from the negative post on the amp to the chassis it is a complete circuit. I highly recommend placing a fuse on the positive line from the battery to the amp. Wiring this way prevents the amp from blowing up your battery, as well as prevents the battery from blowing your amp. Hope it works.
Posted on Jun 25, 2009
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