8
Bad sound!
• Is it loud and distorted? Follow the pro ce dures
described in the “Quick Start” section to verify
that the levels are set properly.
• Are all the connections secure? It’s a good
idea to periodically clean all electrical con nec -
tions with a non-lu bri cat ing electrical contact
cleaner.
• Keep practicing.
Repair
Service for the C300z is available at a factory-
authorized service center. Service for Mackie
products living outside the Unit ed States can be
ob tained through lo cal deal ers or dis trib u tors.
If your Mackie loudspeaker needs ser vice, fol-
low these instructions:
1. Review the pre ced ing trou ble shoot ing sug ges -
tions. Please.
2. Call Tech Support at 1-800-898-3211, 7 am to
5 pm PST, to explain the prob lem and obtain a
Service Request Number. Have your speaker’s
serial number ready.
You must have a Service
Request Num ber before you can obtain fac-
tory-authorized service.
3. Keep this owner’s manual. We don’t need it to
repair the loudspeaker.
4. Pack the loudspeaker in its original pack age,
including protective wrap, endcaps and box.
This is very im por tant. Do not use styrofoam
peanuts!
Mackie is not re spon si ble for any
damage that occurs due to non-factory pack-
ag ing.
5. Include a legible note stating your name, ship-
ping address (no P.O. boxes), daytime phone
number, Service Request Number, and a
detailed de scrip tion of the prob lem, in clud ing
how we can duplicate it.
6. Write the Service Request Number in
BIG
on top of the box. Products sent to us
without the Service Request Number will be
refused.
7. Tech Support will tell you where to ship the
loudspeaker for repair. We suggest insurance
for all forms of cartage.
8. We’ll try to fi x the loudspeaker with in three to
fi ve busi ness days. Ask Tech Sup port for the
latest turn around times when you call for your
Service Request Number. The loudspeaker
must be packaged in its original packing box,
and must have the Service Request Number
on the box. Once it is repaired, we'll ship it
SERVICE INFO
Warranty Service
Details concerning Warranty Service are
spelled out on page 11 of this manual.
If you think your loud speak er has a prob lem,
please do ev ery thing you can to con fi rm it before
calling for ser vice, in clud ing reading through
the fol low ing Trou ble shoot ing section. Doing so
might save you from being de prived of your Mack-
ie loud speak er.
Of all Mackie products returned for ser vice
(which is hardly any at all), many are coded
“CND” — Could Not Du pli cate, which usually
means the problem lay some where else in the sys-
tem. 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 am-
pli fi er turned all the way down? Follow the
pro ce dures in the “Quick Start” section on
page 4 to verify that all the vol ume controls in
the system are properly ad just ed.
• Is the signal source working (and making union
scale)? Make sure all the con nect ing cables are
in good repair and se cure ly con nect ed 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 am pli fi er?
• Check the PAN control on the sig nal source. It
may be turned too far to one side. If you’re us-
ing a stereo signal source, it may be de liv er ing
an out-of-bal ance stereo signal.
• Try swapping sides: Switch the speaker cables
coming from the amplifi er at the am pli fi er end.
If the other side is louder now, the problem
is with the amplifi er, the mixer, or the signal
source.
Poor bass performance
• Check the polarity of the connections between
the amplifi er and the loud speak ers. You may
have your positive and neg a tive connections
re versed at one end of one cable.
It hurts when I touch my arm, or my leg, or even
my head!
• You have a broken fi nger.