PCB Layout Amplifier 2.1 TDA7377

Schematic of the audio power amplifier with TDA7377 2.1 – Stereo + Subwoofer

Suggested PCB design for audio amplifier 2.1

PCB copper side

PCB Silk

PCB component side

Part	Value
Resistor 1/4W 5%
R1, R3,	2.7K – Red, Violet, Red, Gold
R2	3.3K – Orange, Orange, Red, Gold
R4, R11, R13	47K – Yellow, Violet, Orange, Gold
R5, R12, R15, R19, R20	8.2K – Gray, Red, Red, Gold
R6, R7	1k – Brown, Black, Red, Gold
R8	68K – Blue, Gray, Orange, Gold
R9, R10, R14, R18, R23, R26	10K – Brown, Black, Orange, Gold
R16, R17	22K – Red, Red, Orange, Gold
R21, R23	1.8K – Brown, Gray, Red, Gold
R22, R24	6.8K – Blue, Gray, Red, Gold
P1, P3	47K or 50K – Dual Potentiometer logarithmic
P2	100k – Dual Potentiometer
P4	47K or 50K – Single Potentiometer logarithmic
Capacitors electrolytic
C1	6800µF
C3, C4,C14, C19, C30	10µF
C5, C7, C8, C9, C10	4.7µF
C6, C28, C31	100µF
C22	0.47µF or Polyester
C33, C34	1000µF
Capacitors Polyester and ceramic
C2, C15, C20, C32	100nF (104) – Ceramic or Polyester
C11, C12	100pF (101) – Ceramic
C13	220nF (224) – Polyester
C16, C26, C27	100nF (104) – Polyester
C17, C18	6.8nF (682) – Polyester
C21, C23	4,7nF (472) – Polyester
C24, C25	33nF (333) – Polyester
C29	1nF (102) – Polyester
Semiconductors
B1	Bridge Rectifier FBU8K or equivalent 200V / 2A
IC1	7812 – positive voltage regulator 12 Volts
IC2, IC3	LM4558N or equivalent – Dual Operational Amplifier
IC4	TDA7379 or equivalent – see table in the text
LED1	Red Led 5mm
Connectors
ST1, ST2	Connector 9-way (Optional)
X1	Connector Terminal Block 2 pin – AC
X2	Connector Terminal Block 2 pin – DC Power
X3	Connector Terminal Block 2 pin – Input right channel
X4	Connector Terminal Block 2 pin – Input Left Channel
X5	Connector Terminal Block 2 pin – Audio output Left channel
X6	Connector Terminal Block 2 pin – Audio output Right channel
X7	Connector Terminal Block 2 pin – Audio Output Subwoofer