Bass Guitar Amplifier Parts: P1______________1M Linear Potentiometer P2____________100K Log Potentiometer R1_____________68K 1/4W Resistor R2____________470K 1/4W Resistor R3______________2K7 1/4W Resistor R4______________8K2 1/4W Resistor R5____________680R 1/4W Resistor R6____________220K 1/4W Resistor R7_____________39R 1/4W Resistor R8______________2R2 1/4W Resistor R9____________220R 1/4W Resistor R10_____________1R 1/4W Resistor R11___________100R 1/2W Resistor R12_____________1K5 1/4W Resistor C1____________100pF 63V Polystyrene or Ceramic Capacitor C2,C5,C9,C14__100nF 63V Polyester Capacitors C3____________100µF 25V Electrolytic Capacitor C4_____________47µF 25V Electrolytic Capacitor C6______________4n7 63V Polyester Capacitor C7____________470pF 63V Polystyrene or Ceramic Capacitor C8______________2µ2 25V Electrolytic Capacitor C10___________470µF 25V Electrolytic Capacitor C11____________22nF 63V Polyester Capacitor C12__________2200µF 25V Electrolytic Capacitor C13__________1000µF 25V Electrolytic Capacitor D1______________3mm red LED Q1____________BF245 or 2N3819 General-purpose N-Channel FET IC1_________TDA2003 10W Car Radio Audio Amplifier IC SW1,SW2________SPST toggle or slide Switches J1____________6.3mm Mono Jack socket J2____________6.3mm Stereo Jack socket (switched) J3_____________Mini DC Power Socket SPKR__________4 Ohm Car Loudspeaker 100 or 130mm diameter Bass Guitar Amplifier Technical data: Output power (1KHz sinewave): 6W RMS into 4 Ohm at 14.4V supply Sensitivity: 50mV RMS input for full output Frequency response: 25Hz to 20kHz -3dB with the cursor of P1 in center position Total harmonic distortion: 0.05 - 4.5W RMS: 0.15% 6W RMS: 10%