User Manual

5
MTC 2381
IMPORTANT: Before you operate your MTC, first check carefully whether the
local voltage setting corresponds to the switch setting on the rear panel!
If not, and the voltage is in one way or another, incorrect, you will either experi-
ence an immediate fuse burn through (if the setting is lower than the supplied
power) or, if the power is 110-120 V at a 220-240 V input switch setting, the
MTC will simply not function correctly.
Moreover, make sure you remove the plug from your MTC before changing this
switch setting!
Always turn volume down or mute your speakers when connecting or
repatching audio cables to avoid damage to your speakers and ears.
It makes good sense to think about where you place the MTC before connec-
ting it. It should be positioned so that you can easily reach it, but there are
other considerations. Try not to place it near heat sources or in direct sunlight,
and avoid exposure to excessive vibrations, dust, heat, cold or moisture. It
should also be kept away from transformers, motors, power amplifiers and
digital processors. In addition, please:
• Do not open the case. You may risk electric shock and damage to your equip-
ment.
• Leave repairs and maintenance to a qualified service technician. Should
foreign objects fall inside the case, contact your authorized dealer or support
person.
• To avoid electric shock or fire hazards, do not expose your unit to rain or
moisture.
• In case of lightning, unplug the unit. Always unplug the cable by pulling on
the plug only; never pull on the cable.
• Never force a switch or knob.
• Use a soft, lint-free cloth to clean the case, if necessary together with an
acid-free cleaning oil. Avoid cleaning agents as they may damage the unit.
The MTC’s power supply was carefully engineered to provide clean and consis-
tent current – an important prerequisite for excellent audio. Built around a
toroidal transformer, the power supply generates a minimal electromagnetic
field with no hum or mechanical noise. The output side is filtered by an RC
circuit to extract noise and hums inherent in commercial AC power.
All audio-related components are fed by two separate voltage regulators to
minimize disturbance from other components.
An AC power cord is included for connection to the standard 3-prong IEC
connector. The transformer, power cord and IEC connector are VDE, UL and
CSA approved. The AC fuse is rated at 315 mA for 220/240 V and 630 mA for
110/120 V.
Before you begin
Power Supply
220-240V~50Hz
Fuse: 315 mA
110-120V~60Hz
Fuse: 630 mA
Voltage Setting / Fuse Rating