Placement & Ventilation Guidelines; Ac Mains Voltage - Parasound JCM 250 Owner's Manual

Unpacking Your JCM250 & Placement Guidelines
Unpacking Your JCM250
Carefully remove your JCM250 from its shipping carton and locate the enclosed accessories: AC
power cord, a 12V trigger wire for auto turn on, and rack-mounting brackets.
While you are unpacking your JCM250, inspect it thoroughly for possible shipping damage and tell
your Parasound dealer immediately if you find any evidence of shipping damage. Note: Please save
and store both the inner and outer cartons and, most especially, the foam packing inserts to protect
the JCM250 if you must move it or ship it. You may wish to flatten the cardboard cartons to save
room in storage after cutting the taped seams on the bottom flaps.
Placement Guidelines
The JCM250 will be easier to use and will last longer if you follow these simple guidelines:
 The JCM250 should never be placed in a completely enclosed cabinet.
 Place the JCM250 on a surface that will adequately support its substantial weight.
 Use input and output cables that are long enough to leave some slack; that will enable you to
pull the JCM250 out of a cabinet to check or to change connections without inadvertently
disconnecting cables.
 Place your JCM250 where you can route input and output signal cables as far as possible
from any AC cords.
 Where input interconnects must cross AC cords, they should do so only at a 90° right angle.
 Always position the JCM250 horizontally.
 The JCM250 should never be stacked directly above another power amplifier or directly
below another component.
 Do not install the JCM250 in an unventilated equipment cabinet or compartment. Pockets of
stagnant, hot air can build up even in a cabinet with an open front and back.
AC Mains Voltage (115V)
Before Making Any Audio Connections
Always turn off your JCM250 and disconnect the AC cord before making or changing any input,
output, or trigger wire connections. Inserting or removing an input or output cable while the
JCM250 and your preamp are turned on can result in a blast of sound that can damage your
loudspeakers.
AC Power Cord
The AC cord supplied with your JCM250 is a high-quality IEC type cord. Please connect it directly to
an AC wall outlet or power conditioner that is always "live." If possible, plug your JCM250 into the
same AC outlet that your preamplifier is plugged into. If different AC outlets are used for the JCM250
and other components, (including a TV or video projector) the ground potential may be higher or
lower between the outlets, resulting in audible hum.
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