Mackie C300/C300i Owner's Manual - Page 8

SERVICE INFO Warranty Service Poor bass performance 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, including reading through the following Troubleshooting section. Doing so might save you from being deprived of your Mackie loudspeaker. Of all Mackie products returned for service (which is hardly any at all), many are coded "CND" - Could Not Duplicate, which usually means the problem lay somewhere else in the system. These may sound obvious to you, but here are some things you can check: Troubleshooting No sound! • Check the polarity of the connections between the amplifier and the loudspeakers. 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 nonlubricating electrical contact cleaner. • Keep practicing. • 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 connecting 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 amplifier? • 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-ofbalance 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. Repair Service for the C300 is available only from one of our authorized domestic service 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 service, 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 Authorization) 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. 8