22 Watt Car Subwoofer Amplifier Circuit Diagram
This is a project of 22 Watt Car Subwoofer Amplifier Circuit Diagram. 22W into 4 Ohm power amplifier, Variable Low Pass Frequency: 70 – 150Hz . This unit is intended to be connected to an existing car stereo amplifier, adding the often required extra "punch" to the music by driving a subwoofer. As very low frequencies are omnidirectional, a single amplifier is necessary to drive this dedicated loudspeaker. The power amplifier used is a good and cheap BTL (Bridge Tied Load) 13 pin IC made by Philips (now NXP Semiconductors) requiring a very low parts count and capable of delivering about 22W into a 4 Ohm load at the standard car battery voltage of 14.4V. . 22 Watt Car Subwoofer Amplifier Circuit Diagram 22 Watt Car Subwoofer Amplifier Circuit Diagram Parts: P1_____________10K Log Potentiometer P2_____________22K Dual gang Linear Potentiometer R1,R4___________1K 1/4W Resistors R2,R3,R5,R6____10K 1/4W Resistors R7,R8_________100K 1/4W Resistors R9,R10,R13_____47K 1/4W Resistors ...