7
so it locks. If you have any questions about doing this, please
contact Audiomentors for assistance.
TUBES AND TUBE BIAS
The T-2000 uses the following tubes:
•
Four (4) x KT150
•
Four (4) x D3a
•
Two (2) x 6485
Because of the individual bias for each KT150, it is not
necessary to use matched KT150 tubes in the T-2000 25
TH
ANNIVERSARY.
You may use any KT150 type tube in the T-2000 25
TH
ANNIVERSARY. Of course, you will have to adjust the bias back
into the area between the two parallel lines of the meter for
a tube when it is replaced.
CAUTION: If you intend to change
KT150’s, ensure that you use the potentiometers to trim
back the bias below (to the left of) the parallel lines on the
meters first.
This will prevent the new pair of KT150’s from
drawing too much current at first turn-on (not an uncommon
characteristic) and tripping the power fuse at the IEC
connection. No harm is done to the original tubes by turning
the bias down, nor is any harm done to the new tubes by
having them biased low to start. Once the new tubes are
installed and the T-2000 25
TH
ANNIVERSARY is on, use the
potentiometers to adjust the bias so the needles for each
meter are again between the two parallel lines on the meter.
If the current meter for one of the unit’s KT150’s has moved
to the left of the parallel lines on the meter face, using an
appropriately bladed screwdriver, adjust the potentiometer
directly in front of that tube’s location by turning it clockwise
until the needle has returned to between the meter’s parallel
lines. If the meter needle has moved to the right of the
parallel lines on the meter face, turn the potentiometer
control counter-clockwise to correct.
As with all tube equipment, changing tubes from one
manufacturer’s to another’s may alter the sonic
characteristics of the equipment.
All consequences of changing or attempting to change tubes
are borne by the user unless by express agreement between
the owner and Audiomentors. Allnic Audio and Audiomentors
are not liable in any way whatsoever for any injury or loss
incurred by the user or for damage to the T2000 25
TH
ANNIVERSARY, any of its parts, or tubes or replacement tubes
resulting from the user changing or attempting to change
tubes
