Specifications

Step 3 – Place the flat washer on the outside of the chassis
and then install and tighten the hex nuts with a 1/2” socket.
Step 4 – Locate the output transformer secondary wires (either a
black wire and green wire; black wire and yellow wire; or possibly
even black, yellow, and green wires.). Trim to length and solder the
black wire to the grounding terminal of the jack nearest the power
tube sockets (photo 6.11a).
See appendix “F” for additional output transformer wiring
options
Step 5 – Run the 8 ohm tap wire to the output jacks and trim to length.
Step 6 – Strip (1/4”) and tin this 8 ohm tap wire.
Step 7 – With the 8 ohm tap wire, connect the two positive (tip) terminals of the speaker jacks
together (photo 6.11a).
Step 8 – Do not solder these wires just yet,. There is one more wire to add in a future step
(the yellow wire from the board as seen in photo 6.11a). Proceed to 6.12
Mounting the 9 pin Tube Sockets
Step 1 - Prior to mounting the preamp tube sockets, slightly bend the solder terminals 1 - 3
and 6 – 9 outward, leaving pins 4 and 5 alone for now.
Step 2 – Carefully bend terminals 4 and 5 together. The holes of these
terminals should meet close to flush against each other (photo 6.12a).
Step 3 – To provide a flat surface for the mounting screws, use a pair of
needle nose pliers to carefully bend the edges of the shield near the screw
mounting holes in toward the socket (photo 6.12b, c, and d).
Before installing these sockets into the chassis, choose either traditional
mounting or shock mounting. The
conventional option (6.12.1) is to install the
sockets directly to the chassis with screws.
However, shock mounting the sockets
(6.12.2) with rubber grommets, will greatly
reduce the effects of tube microphonics.
6.12.1 traditional socket installation
Step 1 – Insert the V2 tube socket from the outside of the chassis.
Rotate so that pin 8 of the socket is closest to the chassis edge.
Step 2 – Insert a #6 x 1/4” screw into each mounting hole of the V2
socket. Secure the tube socket with two #6 KEPS nuts tight against
the chassis.
Step 3 – Insert the V1 tube socket from the outside of the chassis and
rotate the socket so that pin 8 of the tube is closest to the chassis
edge (photo 6.12e).
Photo 6.12a
6.12
chassis edge
pin 8
photo 6.12e
Photo 6.11a
16 TubeDepot.com
The terminals of these sockets will break if bent too far. It is recommended to use needle
nose pliers for better control when bending these terminals.
CAUTION
before
after
photo 6.12a
photo 6.12c
photo 6.12d
photo 6.12b
NOTE
Various output transformers are available with this kit.
The wire colors differ between these transformers.
Refer to appendix F and / or the TubeDepot online
resources for appropriate installation instructions.