3e audio A5 - Page 6

5
Operaons
1. Connect the passive speaker to the speaker output terminal (please ensure the priority is correct).
2. Connect the audio source to the RCA or XLR(TRS) input.
3. Connect the power supply (MUST within product specicaon range).
4. select the RCA/XLR mode for desired input source.
5. Turn the volume knob clockwise to adjust to the appropriate volume.
Note:
● It is STRONG suggest connect power supply cable before power on the device.
● It is suggested to select Bypass/Volume or Gain switch rst before power on the unit, either there
is slightly pop during switching between two posions.
● product will auto power on when power supply is on.
Op-amp replacement procedure
1. Operaon MUST in power o mode.
2. Op-amp working voltage should meet 36V(+/-18V) maximum,34V Minimum.
3. Idenfy the op-amp to be replace and check the electrical parameter is within spec (for example
working voltage,2 channel, footprint, etc.).
4. Use tweezer to carefully pluck out the original op-amp, then install new op-amp and keep the
orientaon is the same (there is Pin 1 mark on the PCB).
5. MUST double check the op-amp is correctly installed before power on again.
6. Below op-amp are suggested list for replacement. (may add more in the future)
P/N
Manufacturer
P/N
Manufacturer
OPA1612
Ti
MUSES02
JRC
OPA1656
Ti
MUSES8920
JRC
OPA1602
Ti
NJM4580
JRC
OPA2134
Ti
NJM4556
JRC
NE5532P
Ti
NJM2068
JRC
LME49720
Ti
OP249
ADI
LM4562
Ti
AD827
ADI
7. Op-amp supply voltage equal or lower 30V, a dedicated seng(J30) is MUST to set supply voltage to
30V, refer to below picture.