Left Side Panel
Power Switch
:
Press the power switch to (1) turn the power on. Within 1020 seconds, as the heaters reach
operating temperature the tubes will begin to glow a soft orange light. Press the power switch to (0) to turn the
unit off. As the heaters cool off, the orange glow will slowly disappear.
It is normal for a vacuum tube equipment to run warm if used for prolonged periods. Tubes are
operating at much higher temperature and should not be touched for at least ten minutes after the unit
is turned off to prevent burns. Always place your amplifier away from children and pets to prevent
burns.
Audio signal connection jacks
Use these jacks to connect the audio interconnects from your
components to the amplifier.
Speaker terminals
Your amplifier has two output channels, the Right Output and the Left Output. Each
output channel is designed to handle one speaker. Follow the instructions outlined in the Operating Procedure
for the correct speaker connections.
TUBE REPLACEMENT
Your
EOS
amplifier’s conservative design maximizes tube life. You can expect that your Tungsol KT120 tubes
will last in excess of 2000 hours, while the drive 6N6PEV tubes and 5687 preamplifier tubes should last
approximately 3500 hours. Due to most people’s lack of desire and inability to time every listening session,, we
strongly recommend replacing the output tubes at 2030 months, (depending on your listening habits) and your
signal tubes at every other power tube replacement (every 2436 months). This will ensure that the amplifier
always performs at its best and tube failure will not overstress other parts.
Before you begin tube replacement you should make certain that the unit is turned off and disconnected from
the AC outlet and that the current tubes have cooled down. Allow sufficient time, 30 minutes is plenty, for the
tubes to cool down and the internal capacitors to discharge. Before inserting a new tube, inspect the tube for
cracks and physical damage. Make sure that the pins are straight. If you need to straighten the pins, be very
careful as it may cause the glass envelope to break, causing the tube to lose the vacuum and fail as soon as the
amplifier is powered on, possibly damaging the amplifier as well. Also, make sure to inspect the tube sockets for
cracks and pin inserts. Carefully align the pins with the socket and gently insert the new tube.
Never force a
tube into a socket.
Should you decide to buy replacement tubes from Trafomatic Audio, rest assured that they
were fully tested before the shipment.
Only KT120 power tubes can be used. Regarding the preamplifier and drive tubes, the 6N6P and 5687 tubes
CANNOT
be replaced with other tube such as the ECC81,82, 83, or 88. No other tube types should be used as
this may cause damage to the amplifier, dasmage which is not covered by the warranty.
We do not recommend frequent changes of the tubes, as the sockets are sensitive mechanical parts
and are rated for a relatively small number of insertions
.
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