Numark Industries DM1235 - Manual (Page 5)

DM1200/DM1235/DM1285
IMPORTANT INFORMATION...
Please read this entire manual before
connecting the DM1200 to your system.
For optimum performance:
• Always make sure that AC power is OFF while
making any connections.
• Do not use excessively long cables (i.e. over
50ft/14m) Be sure plugs and jacks are tightly
mated. Loose connections can cause hum, noise
or intermittents that could easily damage your
speakers.
• Never use spray cleaners or oils on
the slide controls. Residues cause
excessive dirt build-up and this will
void your warranty. In normal use
slide controls can last for many
years. If they malfunction (usually
because of a dirty or dusty
environment) consult a professional
technician.
• Never attempt to make any adjustments or repairs
other than those described in this manual. Take
the DM1200 to your dealer or to an authorized
Numark Service Center.
A NOTE ON CABLES:
Make the input and output connections with
readily available low-capacitance stereo cables.
Quality cables make a big difference in audio
fidelity and punch. See your Numark dealer or an
electronics or audio specialist store if you are not
sure which cables to purchase.
SYSTEM PRECAUTIONS
• Use appropriate cables throughout your system:
Quality shielded audio cables and terminated
shielded video cables, low-capacitance
preferred. Speaker cables must be 14-gauge
minimum; 12- or 10-gauge is better.
• Reliability will be enhanced through the use of
banana connectors on the speaker wires.
Observe correct speaker wire polarity. If in
doubt, consult your Numark dealer or a qualified
technician.
• Take care to connect only one cable at a time.
Pay attention to the color-coded, labeled Input
and Output jacks.
• ALWAYS remember: “TURN AMPS O N LAST
AND OFF FIRST”. Begin with master faders or
volume controls on minimum and the amplifier
gain/input control(s) down. Wait 8 to 10 seconds
before turning up the volume. This prevents
transients which may cause severe speaker
damage.
• Use restraint when operating controls. Try to
move them slowly. Rapid adjustments could
damage speakers due to amplifier clipping.
• Avoid amplifier “clipping” at all costs: this
occurs when the Red LEDs (usually on the front
panel of most professional power amplifiers)
start flashing. “Clipping” is when the power
amplifier is distorting and working beyond its
limits. Amplifier distortion is THE major cause of
speaker failure.
• To prevent fire or shock hazard, do not expose
the unit to rain or moisture. Never place cans
of beer, soda, glasses of water or anything
w e t on top of the mixer!
Numark - The Leader in DJ Technology
©1998 Industries 5 http://www.numark.com