Item Name: Power Amplifier Board Parts DC 12V Pure Rear 2.0 Dual-Channel 15W+15W Electronic. Product DescriptionThe new version of the TDA7297 pure post-amplifier board bulk, kit, plus the anti-reverse circuit, effective prevention of chip burnout caused by reverse power supply, component re-layout, lead hole spacing is the standard 3.96mm, easy to direct lead welding or add standard terminals on the board. Contains components such as the finished picture, you need to weld their own Oh.DIY must see: recently there are very few customers said the board has noiseWe analyze the following reasons: 1, with the mains rectifier power supply, 2, do not add potentiometer.Solutions: 1, potentiometer must be added, if not add potentiometer can also be, must use two 47K resistors are connected in parallel to the left and right channel audio input. 2, if the utility buck rectifier power supply, 100uf filter capacitor must be replaced with more than 1000uf (battery power supply do not have to change). Some customers say that the heat is large, most of them do not add a heat sink or use the heat sink is too small, you must add a heat sink, the recommended size of the heat sink 100x30x45mm (LxWxH), the bulk does not include a heat sink.package include:kit*1
