7
C.
SPEAKER TERMINALS
The M-3000 MK II 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 MK II 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.
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 MK II 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.
The M-3000 MK II you have purchased is set internally for either AC 110/120 volt – 60 HZ, or 220/230 volt – 50 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 MK II 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 MK II. Before you power up the M-3000 MK II, though, be sure
you have:
•
removed ALL the cushion materials (cardboard) from inside the tube chimneys.
(It is optional to leave the
“O” rings on the small tubes; some prefer the sound with the O rings on.)
•
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 MK II 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. 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 MK II will be
powered on. After warm up and application of full plate voltage, not all tubes may bias at the same rate. Allow one
or two minutes for all the tubes to reach full operating specification.
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 MK II(s) monoblock(s) first;
then, turn off your preamplifier and sources.
If the M-3000 MK II’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
