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APPENDIX A: WARRANTY & DISCLAIMERS
DISCLAIMER
QSC Audio Products, Inc. is not liable for any damage to speakers, amplifiers, or any other equipment that
is caused by negligence or improper installation and/or use of the SF-1 Subwoofer Filter.
PRODUCT WARRANTY
QSC Audio Products, Inc. guarantees the SF-1 Subwoofer Filter to be free from defective material and/or
workmanship for a period of three years from date of sale, and will replace defective parts and repair
malfunctioning products under this warranty when the defect occurs under normal installation and use—
provided the unit is returned to our factory via prepaid transportation with proof of purchase (sales receipt).
This warranty provides that examination of the returned product must disclose, in our judgment, a
manufacturing defect. This warranty does not extend to any product which has been subject to misuse,
neglect, accident, improper installation, or where the date code has been removed or defaced.
APPENDIX B: TECHNICAL ASSISTANCE & SERVICE
Servicing your unit requires a trained technician capable of performing the type of service you need. There
are no user serviceable components inside your unit and the danger of electric shock exists. Additionally,
some of the components in your unit are QSC specific parts that require QSC replacements. Comprehen-
sive service manuals for some models are available at QSC.
TECHNICAL ASSISTANCE
If you suspect that your amplifier is defective, check your system configuration and amplifier settings to
determine the origin of the problem. In many cases, incorrect audio interfacing, poor cabling, or other
system level impairments are the cause of problems in audio systems. For technical assistance beyond
the information given in this manual, the QSC Technical Services department may be contacted.
FACTORY SERVICE
In the event that your amplifier does need factory service, you may reach the QSC Technical Services
department for return instructions. A Return Authorization (RA) number must be obtained from the QSC
Technical Services department. QSC may not account for products that are returned without a Return
Authorization number.
Product Return Guidelines
1. Pack the product well for protection during shipment. QSC will provide the factory packaging free of
charge upon request.
2. Include a copy of the sales receipt, your name, return address, phone number, and defect description
with your return correspondence.
3. Call the QSC Technical Services department for a Return Authorization number.
4. Mark the Return Authorization number on the outside of the packaging.
5. Ship the product prepaid to QSC Audio Products. We recommend United Parcel Service (UPS).