LDA MID DiY stereo audio amplifier kit assembly instructions
General assembly advice
DISCLAIMER
It is the builder's sole responsibility to ensure that the equipment produced using this kit complies with the applicable electrical safety regulations in force, e.g. protection against electric shock. Euraudio disclaims all liability for any personal injury, death or damage, expressed or implied, caused by the equipment produced using this kit.
The use of wooden and plastic boxes is not recommended due to the risk of fire. The components supplied in this kit are not checked for flammability rating.
Recommended transformer: See PSSR2Sc assembly instructions.
Assembly instructions of kit components
APBFa/APBMa assembly instructions or DPBsc assembly instructions
MID2/MID2A assembly instructions
Connection scheme
Click below for the connection scheme:
Mark the two LDA17 boards "1" and "2". Do the same for the two ABPF/APBM/DPB boards. Always connect boards marked "1" together and connect boards marked "2" together. Do not mix up connections between boards marked "1" with those marked "2".
List of connections between boards
PSSR2S - LDA17
|
PSSR2S |
LDA17 |
Connection type |
Remarks |
|
J96/J97(+VCC) |
J9(+VCC) |
solder - solder |
wire min. 0,75 mm2 |
|
J100/J104(PGND) |
J13(PGND) |
solder - solder |
wire min. 0,35 mm2 |
|
J101/J105(ZGND) |
J11(ZGND) |
solder - solder |
wire min. 0,35 mm2 |
|
J102/J106(GND) |
J3(GND) |
solder - solder |
wire min. 0,25 mm2 |
|
J98/J99(-VCC) |
J12(-VCC) |
solder - solder |
wire min. 0,75 mm2 |
|
J115(RLYIN1)* J113(RLYIN2)* |
J10(AOUT) |
solder - solder |
wire min. 0,75 mm2 |
* Connect the LDA17 marked "1" to "RLYIN1" and connect the LDA17 marked "2" to "RLYIN2" on the PSSR2S board.
MID2(A) - PSSR2S
|
MID2(A) |
PSSR2S |
Connection type |
Remarks |
|
J86(SV_1) |
J110(+9V), J111(GND) |
connector - solder |
wires min. 0,25 mm2 |
LDA17 - APBF/APBM
|
LDA17 |
APBF/APBM |
Connection type |
Remarks |
|
+ER(J5/J7), -ER(J6/J8) |
J51(ERV) |
solder - connector |
observe +/- polarity; see LDA17 assy instructions |
LDA17 - DPB
|
LDA17 |
DPB |
Connection type |
Remarks |
|
+ER(J5/J7), -ER(J6/J8) |
J52(ERV) |
solder - connector |
observe +/- polarity; see LDA17 assy instructions |
PSSR2S - APBF/APBM
|
PSSR2S |
APBF/APBM |
Connection type |
Remarks |
|
J92(PROT1)** J93(PROT2)** |
J53(PROT) |
connector - connector |
observe polarity when assembling connector |
PSSR2S - DPB
|
PSSR2S |
DPB |
Connection type |
Remarks |
|
J92(PROT1)** J93(PROT2)** |
J54(PROT) |
connector - connector |
observe polarity when assembling connector |
** Connect the ABPF/APBM/DPB marked "1" to "PROT1" and connect the ABPF/APBM/DPB marked "2" to "PROT2" on the PSSR2S board.