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3.2. Power Supply Connection
The power supply for the JC-2 is mounted in a separate chassis to eli-
minate hum pick-up.
Check the voltage the power supply comes a cable with a three
power supply label to be sure they correspond to the voltage of
the power source being used.
From one end of the power supply comes a cable with a three
prong AC plug on the end of it. Connect this end to a wall
outlet, using a ground adapter plug if your wall outlet will
not accept three prongs. From the other end of power
supply comes a cable with a cannon connector on the end of
it. Connect this end to the four-pin male cannon connector
on the rear of the JC-2. This should be done before connecting
the JC-2 to the power amplifier because there is a transient
thump when power is first applied to the unit.
POWER SUPPLY CONNECTOR PIN CONFIGURATION: Pin 1 - ground
Pin 2 - + V
Pin 3 - - V
Pin 4 - no connection
3.3. Rack Mounting
The JC-2 may be mounted in a standard 19" relay rack. (The rubber feet
may be unscrewed if necessary.) 10-32 screw should fit the threads on
most racks. Be sure to use nylon washers when mounting the JC-2 so as
not to scratch the unit.
4. OPERATION
4.1. Description of Controls
INPUT SELECTOR - selects any one of six inputs. AUX., TUNER, TAPE 1,
TAPE 2, and REMOTE PHONO are all high level inputs. PHONO 1 is an RIAA-
equalized low level input. The REMOTE PHONO input is an unequalized
high level input. It is intended for use with phono systems having
their own amplification and equalization, such as the EMT turntable/
cartridge system, or certain of strain gauge cartridge.
INPUT/MONITOR
- switches between the program source at the input selector
or either of two tape monitor inputs. This switch will not affect the
tape outputs. When making copies from one machine to another through the
JC-2, the playback machine should be directed through the input selector
rather than the input/monitor switch. Tape copies can be made in this
manner without degradation of signal because there are no amplifiers
between the input selector and the tape outputs.