Audiovox LXA300 Operation Guide - Page 11

® LXA300 Troubleshooting Problem Amplifier does not operate (power LED not on) when vehicle and radio are on Radio volume needs to be turned up too high for amp to work Radio volume is too sensitive Sound from only one speaker Sound distorted Blows fuses Alternator whine in outputs (vehicle ignition noise) Loud pop in speakers when power is turned on or off Protect light comes on/ amplifier shuts down No output on channels Can't find cause of problem Possible Cause No power to +12V terminal No power to remote wire with radio on Fuse blown Input level control (gain control) adjusted too low Input level control adjusted too high Defective speaker Poor connections to speaker (wire) Speaker wires shorting together RCA input cable defective Input level control adjusted too high Speaker wires shorting together Power wires hooked up incorrectly Speakers blown or defective Radio has poor noise immunity Improper ground connections Remote wire (blue) not properly connected Amp is in thermal protection Faulty speaker connection and/or crossover Low battery voltage Speaker impedance less than 2 ohms per channel Speaker wires not connected to speakers properly Input hooked up incorrectly Corrective Action Repair wire or connections Check connections to radio with test light Check fuse Adjust input level control (gain control) Adjust input level control to lower setting Replace speaker Check connections Separate speaker wires and insulate Replace cable Adjust input level control Separate speaker wires and insulate Check power wire connections Check speakers Disconnect audio inputs to amplifier - if noise disappears then the radio is at fault Make sure radio and amplifier are grounded to the same point Refer to page 4 for proper installation. If radio does not have a power antenna lead and you have connected the remote lead to an ignition source then you may get a "pop" in your speakers. This is not uncommon. You may have to put a switch in line with the remote lead to turn the amp on/off manually. Let amp cool down before attempting to turn back on (some installations may require a fan to keep the amp cool, especially if you are driving subwoofers with the amp) Check speakers and/or crossovers for loose or bad connections Make sure you are getting between 10.8-15.6 volts to the amplifier with a digital multimeter measured at the amplifier If you are using 4 ohm speakers you cannot have more than two speakers wired in parallel per channel Amp will not operate into 2 ohms bridged Refer to pages 5, 6 and 7 for proper installation Contact Jensen Technical Assistance (1-800-323-0221) 11