12
WDPre3 Kit Assembly Instructions
Using a short length of red cable link the OP
+
terminal on the
PCB to the A terminal on the transformer. Similarly link the
OPL
+
terminal on the PCB to the A terminal on the other
transformer. If you use slightly longer lengths of wire than you
might think necessary, you will be able to
“
lift
”
the PCB,
without disconnecting it, should you need to access it at a
later date.
Prepare the heater link cables by twisting approx. 200mm of
Brown and Grey wire together. Solder this pair, along with the
Brown and Grey wires from the Power input AND the Relay Board,
to the HTRL
+
(Brown) and HTRL
-
(Grey) PCB pins, cutting to
length as appropriate. Connect the other end of the heater link
cables to HTR
+
(Brown) and HTR
-
(Grey).
Connect the 300mm Grey and Black wires from the Right Channel
phono plug to the transformer closest to the front panel. Cut
the wires to length and solder the Grey wire to terminal 7 of
the transformer. Solder the Black wire to the CT terminal if you
require a Gain of x6 (recommended), or to the Terminal 18 if you
need a high gain of x12 (for low output sources).
Repeat this process for the Left Channel, connecting the 200mm
wires to the transformer closest to the rear of the chassis.
Fig. 11
Fig. 11
HT Wiring
Fig. 12
Fig. 13
12
WDPre3 Kit Assembly Instructions
Using a short length of red cable link the OP
+
terminal on the
PCB to the A terminal on the transformer. Similarly link the
OPL
+
terminal on the PCB to the A terminal on the other
transformer. If you use slightly longer lengths of wire than you
might think necessary, you will be able to
“
lift
”
the PCB,
without disconnecting it, should you need to access it at a
later date.
Prepare the heater link cables by twisting approx. 200mm of
Brown and Grey wire together. Solder this pair, along with the
Brown and Grey wires from the Power input AND the Relay Board,
to the HTRL
+
(Brown) and HTRL
-
(Grey) PCB pins, cutting to
length as appropriate. Connect the other end of the heater link
cables to HTR
+
(Brown) and HTR
-
(Grey).
Connect the 300mm Grey and Black wires from the Right Channel
phono plug to the transformer closest to the front panel. Cut
the wires to length and solder the Grey wire to terminal 7 of
the transformer. Solder the Black wire to the CT terminal if you
require a Gain of x6 (recommended), or to the Terminal 18 if you
need a high gain of x12 (for low output sources).
Repeat this process for the Left Channel, connecting the 200mm
wires to the transformer closest to the rear of the chassis.
Fig. 11
Fig. 11
HT Wiring
Fig. 12
Fig. 13
