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Poor bass performance
• Check the polarity of the connections
between the amplifier and the loud-
speakers. You may have your positive
and negative connections reversed at
one end of one cable.
It hurts when I touch my arm, or my leg,
or even my head!
• You have a broken finger.
Bad sound!
• Is it loud and distorted? Follow the
procedures described in the “Quick
Start” section to verify that the levels
are set properly.
• Are all the connections are secure? It’s a
good idea to periodically clean all
electrical connections with a non-
lubricating electrical contact cleaner.
• Keep practicing.
Repair
Service for the C300 is available only
from one of our authorized domestic ser-
vice stations or at the factory, located in
sunny Woodinville, Washington. Service for
loudspeakers living outside the United
States can be obtained through local dealers
or distributors.
If your Mackie loudspeaker needs ser-
vice, follow these instructions:
1. Review the preceding troubleshooting
suggestions. Please.
2. Call Tech Support at 1-800-258-6883,
7am to 5pm PST, to explain the problem
and request an RA (Return Authoriza-
tion) number. Have your speaker’s
serial number ready. You must have an
RA number before you can obtain
service at the factory or an authorized
service center.
3. Keep this owner’s manual. We don’t
need it to repair the loudspeaker.
SERVICE INFO
Warranty Service
Details concerning Warranty Service are
spelled out on page 11 of this manual.
If you think your loudspeaker has a
problem, please do everything you can to
confirm it before calling for service, includ-
ing reading through the following
Troubleshooting section. Doing so might
save you from being deprived of your
Mackie loudspeaker.
Of all Mackie products returned for ser-
vice (which is hardly any at all), many are
coded “CND” — Could Not Duplicate,
which usually means the problem lay some-
where else in the system. These may sound
obvious to you, but here are some things
you can check:
Troubleshooting
No sound!
• Are the level controls on the mixer or
amplifier turned all the way down?
Follow the procedures in the “Quick
Start” section on page 4 to verify that all
the volume controls in the system are
properly adjusted.
• Is the signal source working (and making
union scale)? Make sure all the connect-
ing cables are in good repair and securely
connected at both ends.
One side is way louder than the other!
• Are the level controls set the same for
both channels on the mixer and ampli-
fier?
• Check the PAN control on the signal
source. It may be turned too far to one
side. If you’re using a stereo signal
source, it may be delivering an out-of-
balance stereo signal.
• Try swapping sides: Switch the speaker
cables coming from the amplifier at the
amplifier end. If the other side is louder
now, the problem is with the amplifier,
the mixer, or the signal source.