VAC PA90 User Manual
Page 4
4
UNPACKING
Each amplifier and power supply chassis is packed in double box cartons for the greatest
possible protection during shipping. Included in the power amplifier carton are vacuum tubes,
a power cable for attachment to the PS90 Power Supply, and a separate grounding strap
which must be attached to the PS90 for safety. Tubes are packed individually to prevent
damage, and must be fitted to the PA90 Power Amplifier before installation can proceed.
Each tube socket is covered by a small round sticker. On this sticker is a number that
corresponds to a numbered sticker on each tube. Fit each tube into the matching socket, first
removing
the sticker from the PA90 and the tube. The bias levels for the output tubes have
been factory set, but should be checked during the installation procedure.
DO NOT CONNECT TWO PA90 POWER AMPLIFIERS TO A SINGLE PS90 POWER SUPPLY.