7
THE CURRENT METERS
These illuminated meters indicate the current supply to each
of the four KT150 gain tubes in the M-3000. There is one
current meter for each KT120 power tube. There is also a
potentiometer and a fuse for each KT150. (See Figure 6).
When you turn on the M-3000, the needle of each current
meter should be between the two parallel lines on the meter
face. Any error of current supply to or failure of a KT150 tube
is indicated by the needle on the KT150 tube’s respective
meter moving out from between these two parallel lines.
TUBES AND TUBE BIAS
Each M-3000 monoblock uses the following tubes:
Four (4) x KT150
Two (2) E282F
One (1) x 6AK6
Because of the individual bias for each
KT150, it is not
necessary to use
a matched quad
of these power tubes
in the
M-3000.
If the needle
of a current meter for a
KT150
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.
If a meter’s needle drops to the left limit of the meter’s face
during operation, this indicates a failure of the related
KT150
tube. You must turn off the
M-3000
and replace both the fuse
(0.5A, 250V, 20mm glass type
for that tube and the
KT150.
To replace a fuse, using a screwdriver, simply
turn the top
of
the fuse
cap counter clockwise. It will spring out holding
the
fuse. Replace the
fuse,
push
the
fuse
cap down and turn
it
clockwise;
it will lock itself.
If you have any questions about
doing this, please contact
Allnic Audio USA
for assistance.
You may use any
KT150
type tube in the
M-3000. 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.
Please
refer to Figure
6
for tube locations.
All consequences of changing or attempting to change tubes
are borne by the user unless by express agreement between
the owner and
Allnic Audio USA
. Allnic Audio
and
Allnic Audio
USA
are not liable
in any way whatsoever for
any injury
or
loss incurred by the
user or
for
damage to the
M-3000, any of
its parts, or tubes or replacement tubes resulting
from the
user changing or attempting to change tubes.
SPECIFICATIONS
FOR THE ALLNIC AUDIO
M-3000
MK2
KT150
MONOBLOCK POWER AMPLIFIER
Output Power:
Distortion:
20
0w (8Ω load, at 1KHz)
0.17% at 1KHz at 10w
Frequency Response:
20Hz - 20KHz Flat
S/N Ratio:
Damping Factor:
Voltage gain:
Input Impedance:
Input Sensitivity:
Fuses:
Tubes (per chassis):
Dimensions:
Weight:
-80dB (CCIR, 1KHz)
8 at 8Ω load at 1KHz
+24dB
100KΩ (single-ended, unbalanced)
2.0V for rated power
0.5A, 250V, 20mm slow-blow
(KT150’s)
5A, 250V, 20mm slow-blow (IEC
Mains)
KT150 X 4 (power triode)E282F X
2 (second stage drivers)6AK6 X 1
(first stage driver)
(W x D x H) 430mm (16.93 inches) x
430mm (16.93 inches) X 240mm
(9.45 inches)
40Kg (88.2 lbs) net per monoblock.
55Kg (121 lbs) shipping weight per
monoblock.
