An car subwoofer is added into an car audio system to increase the amount of low end bass. It is often that factory or aftermarket car speakers can't seem to play low bass. This is because they don't have an large enough surface diameter and there are many gaps and holes within the door card that leak air out. If your car subwoofer plays no sound, then hopefully this car audio article will help you. The first thing that you need to check is if your car audio amplifier is powering on. When you turn on the vehicles ignition and power on the headunit, does the power LED come on? If it doesn't you need to troubleshoot why the car amplifier is not powering on in the first place. Check the ground, is the black ground wire connected to an bolt were the area the ring terminal is mounted to an clean bear surface? To ensure your car amplifier has an good ground, it is essential to scrape down any paint around the area. Paint can cause an poor ground for your car amplifier as it blocks conductivity.
The 12 volt red power wire, check the ring terminal is connected firmly onto the positive car terminal on the car battery. Furthermore, inspect the fuse holder. Check the inline fuse your car amplifier on the power wire, does it look burnt? Also, on some car audio amplifiers there is an fuse directly attached onto it. One fuse is to protect the vehicle and the wiring, the other is to protect the car amp from an short circuit. Check both, if any blown fuse is identified then replace with the correct amp fuse. Retest and see if your car amplifier powers on. If still no power, then check the blue remote wire. Without the blue remote wire connected to an correct wire, the car amplifier will fail to turn on. The blue is used as an signal wire, as soon as you turn the radio on it will send an 5 volt signal down the line to the car amplifier to switch on. The purpose of the blue remote wire is to tell the car amplifier to shut off, this prevent having an drained car battery overnight. If you're using an aftermarket radio, such as pioneer, kenwood, alpine or JVC then the blue remote wire can be connected directly to the blue and white amp turn on wire found on the back of the radio wiring ISO harness. If you are using an factory radio with an rca converter, find an appropriate switched circuit from one of fuses found in the fuse box.
If your car amplifier powers on, but there is no sound, then the first thing to check is the RCA cables. Make sure they are connected to the rear output rca plugs found on the back of the radio and ensure that the other end is connected into the input on the car amplifier. This wire is what sends music to your car amplifier and it is critical, without this the car amplifier will not produce any audible sound. Also make sure that the speaker wire inside the subwoofer enclosure box is connected to the terminal on the subwoofer correctly and also leading down to the terminal cup mounted on the wood. Any loose speaker wire connection can cause no sound. Also make sure the gain is not turned down. If still no sound, it could be an blown subwoofer, so obtain an speaker or subwoofer from an friend and test your amp on there sub.
This guide is straight to the point but contains useful car audio troubleshooting to help you fix your car subwoofer with no sound. If you have any questions please feel free to leave an comment and one of our helpful car audio technicians will get back to you.
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