Installation; Vacuum Tube Placement; Before Operating The Reference 80S; Tube Cage Installation - Audio Research High Definition Reference 80S User Manual

Installation

Vacuum Tube Placement

Before operating the Reference 80S

Your Reference 80S amplifier is shipped
with the vacuum tubes packed in a
separate foam-lined carton. These must
be unpacked and installed before you
attempt to operate the amplifier. Included
are four matched KT150s and two
matched 6H30 tubes.
Follow the procedure on the next pages
to remove the top cage prior to vacuum
tube installation.
8
H I G H D E F I N I T I O N
V5
V1 V2
Vacuum Tube Installation
Carefully remove each vacuum tube from
its protective foam and match its location
'V' number (written on the base of the
tube) to the'V' number screened next
to each socket on the top plate of the
Reference 80S. Firmly seat each tube in
its matching socket, taking care to align
the key at the base of each KT150 to its
socket hole.
The 6H30 tubes in V5 and V6 are not
keyed, and care must be taken to align
the pins to the sockets. A small flashlight
can assist.
V6
V3 V4