6
B.
INPUTS
There are two (2) female inputs. One accepts a balanced
cable with a male XLR connector; the other accepts a cable
with a single-ended, RCA type male connector. These input
connections are located on the right (facing the back) rear of
the chassis, with the balanced input closest to the side edge.
Between the inputs, there is a switch to select one of two pin
configurations for a balanced cable (i.e., it changes the
phase). The top position is for pin 2” hot” and pin 3 “cold”;
the bottom position is for the reverse (in both cases, pin 1 is
ground). Please refer to Figure 4.
C.
SPEAKER TERMINALS
The M-3000 is equipped with one pair of high-quality speaker
terminals. These terminals are located in the middle of the
rear panel of the M-3000 chassis, with the terminal for the
live connection marked positive “+” on the left, and with the
return connection labeled negative “-”, to the right (facing
the chassis rear). Between the plus and minus terminals is a
switch that provides for either 8 or 4 ohm impedance, as your
speakers may require. The upper position of the switch is for
8 ohm operation; the lower for 4 ohm operation. 8 and 16
ohm terminals are available by special order. The terminals
accept bare wire (not recommended) and spade and banana
type connectors. Please refer to Figure 4.
D.
POWER CONNECTION
Connect the input interconnect and speaker cables
before you insert the power cable into the receptacle at
the left (facing the back) rear of the chassis. The M-
3000 uses a standard three prong male IEC connection
for AC input. You need to use a power cord with a
female three prong IEC connector at one end. Please
refer to Figure 4.
The M-3000 you have purchased is set internally for AC
110/120 volt – 60 HZ operation. There is no way to
change this to another AC setting without return of the
unit to the factory for re-wiring, at the owner’s cost,
including transport both directions.
INITIAL POWER-ON
Once you have your M-3000 in place and all connections have
been made to your source(s) and preamplifier, you are ready
to turn on the power for your M-3000. Before you power up
the M-3000, though, be sure you have:
removed ALL the cushion materials (cardboard and “O”
rings) from inside the tube chimneys/on tubes.
selected the input connection that you want to use, single
ended (RCA) or balanced (XLR), on the switch on the back of
the chassis and have the interconnect firmly attached.
turned on your source(s) and your preamplifier, and turned
the preamplifier’s volume control down to zero or
otherwise muted its output
securely and correctly fastened the speaker cables and
ensured that they are also connected properly to the
speakers
checked that all tubes are snug in their sockets
Turn on the
M-3000
by pushing
in
the
power switch button
located at the
right
of the
front
panel (facing the front of the
unit to the “on” position
(See Figure 5. The “on” position is
with the
button
switch depressed.
Of course, the off position is
the reverse. After about a thirty to forty (30
-
40 second delay
(the soft start, the
M-3000
will be powered on.
OPERATION
When the power is on, the
current meters on the top plate of
the chassis will illuminate.
From this point on,
operation is
straight-forward.
When you are finished listening, turn off
your
M-3000(s monoblock(s first; then,
turn off your preamplifier
and
sources.
If the M-3000’s are in triode mode at turn-off,
they will produce a sound through the speakers as the
amplifier’s relays turn off. Though this sound is harmless to
speakers, some users may prefer not to hear it. To avoid the
sound, simply switch the M-3000’s to pentode mode
prior to
turning them off
(see the “On-the-Fly Triode/Pentode
Switching section below).
In the case of any failure, please contact
Allnic Audio USA
for
assistance.
“ON-THE-FLY” TRIODE/PENTODE SWITCHING
You can use the Triode/Pentode “Mode Selector” button at any
time during operation to switch back and forth from Triode to
Pentode operation. Press the mode selector button down to
have the M-3000 operate in Triode mode; press the button
again so it is in the raised position to have the M-3000 operate
in
Pentode mode (See Figure 5).
