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Fan reversal for multiple amplifier installations
In some installations,
it
may be desirable to
mount two or more TC Series amplifiers
one after another in a line. You can reverse
the fan in any amplifier to reverse the
direction of air flow through the tunnel; this
enables you to prevent the warm air from
the first amp from being vented into the
tunnel of the second amp. and so on.
From the factory, the fan pulls air through
the tunnel and exhausts the warm air at the
fan end when music is playing. This
direction of air circulation provides the best
cooling for a TC Series amplifier. Leave
the amplifier(s) that will be driven the
hardest (usually the bass frequencies) in the
factory configuration, and only reverse the
cooling direction on the amplifiers with the
lighter load.
Note:
In the factory configura-
tion, the fan hub label is positioned toward
the outside of the amplifier.
To reverse the direction of the air flow, the
fan itself must be reversed in its mounting
(the fan is electrically controlled, and
simply reversing power to the fan will not
change its direction). Contact any author-
ized Harman Kardon installer or service
I
TC304
screw locations
center to perform the fan reversal, and take
this manual with you.
To reverse the direction of air flow through
the tunnel:
I.
Carefully remove the screws attaching
the fan end cap of the amplifier (see
illustration for location of screws).
2.
Gently remove the end cap just far
enough to allow removal of the fan from
its mounting pins in the end cap. DO
NOT REMOVE THE WIRES.
3.
Flip the fan assembly
180°
so that it faces
in the opposite direction. Make sure the
rubber insulation pads are still in place on
both sides of the fan. The wires are
attached to the circuit board, and the fan
stays with the end cap, so
be
careful not
to stretch or damage the wires.
4.
Replace the end cap assembly and
screws. DO NOT OVERTIGHTEN THE
SCREWS.
TC600 and TC300:
5
large,
1
small RCA
TC304:
5
large,
2
small RCA
34


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