User guide

6
Installation
Installation of Vacuum Tubes
Before operating the SP20...
This unit has been shipped with the vacuum tubes installed in protective
foam in a separate box packed inside the shipping carton. Remove the
tubes carefully from the protective foam. Using a phillips-head screwdriver
to loosen the fastening screws, remove the top cover and set aside.
After removing the top cover and the vacuum tubes packed in protective
foam, see the accompanying illustrated sheet for instructions on installing
the tubes for your SP20 in their proper locations in the power supply and
audio chassis. Note that the numbers written on each tube correspond to
a ‘V’ number printed on the circuit board next to each tube socket. Insert
each tube rmly, carefully aligning the tube pins with the corresponding
socket holes.
Line
Stage
Phono
Stage
V1
V3
V2
V4
CHANNEL
R L