LDA 53M_np DiY mono audio amplifier kit assembly instructions

General assembly advice

Recommended transformer: See PSSR350c or PSS701c/PSS702c assembly instructions.

Assembly instructions of kit components

LDA172hc assembly instructions

PSSR350c assembly instructions or PSS701c/PSS702c assembly instructions

APBFa/APBMa assembly instructions

MIB12mc assembly instructions

List of connections between boards

PSSR350 - LDA172

PSSR350	LDA172	Connection type	Remarks
J93(+VCC)	J9(+VCC)	solder - solder	cable min. 0,75 mm^2
J94(PGND)	J13(PGND)	solder - solder	cable min. 0,35 mm^2
J95(ZGND)	J11(ZGND)	solder - solder	cable min. 0,35 mm^2
J96(GND)	J3(GND)	solder - solder	cable min. 0,25 mm^2
J97(-VCC)	J12(-VCC)	solder - solder	cable min. 0,75 mm^2
J102(AOUT)	J10(AOUT)	solder - solder	cable min. 0,75 mm^2

PSS701/PSS702 - LDA172

PSS701	LDA172	Connection type	Remarks
J94(+VCC)	J9(+VCC)	solder - solder	cable min. 0,75 mm^2
J96(PGND)	J13(PGND)	solder - solder	cable min. 0,35 mm^2
J97(ZGND)	J11(ZGND)	solder - solder	cable min. 0,35 mm^2
J98(GND)	J3(GND)	solder - solder	cable min. 0,25 mm^2
J95(-VCC)	J12(-VCC)	solder - solder	cable min. 0,75 mm^2
J102(RLYIN)	J10(AOUT)	solder - solder	cable min. 0,75 mm^2

MIB12 - PSSR350/PSS701/PSS702

MIB12	PSSR350/PSS701	Connection type	Remarks
J84/J85	J103(12VDC)	solder - connector	cables min. 0,25 mm^2

LDA172 - APBF/APBM

LDA172	APBF/APBM	Connection type	Remarks
+ER(J5/J7), -ER(J6/J8)	J51(ERV)	solder - connector	observe +/- polarity; see LDA172 assy instructions

PSSR350/PSS701/PSS702 - APBF/APBM

PSSR350/PSS701	APBF/APBM	Connection type	Remarks
J92(PROT)	J53(PROT)	connector - connector	observe polarity when assembling connector

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