[. . . ] Limited Warranty The Russound WB-1 is fully guaranteed for Five (5) years from the date of purchase against all defects in materials and workmanship. During this period Russound will replace any defective parts and correct any defect in workmanship without charge for either parts or labor. [. . . ] To return for repairs, the unit must be shipped to Russound at the owner's expense, along with a note explaining the nature of the service required. Be sure to pack in a corrugated container with at least 3 inches of resilient material to protect the unit from damage in transit. Russound sells products only through authorized Dealers and Distributors to ensure that customers obtain proper support and service. Any Russound product purchased from an unauthorized dealer or other source, including retailers, mail order sellers and online sellers will not be honored or serviced under existing Russound warranty policy. Any sale of products by an unauthorized source or other manner not authorized by Russound shall void the warranty on the applicable product. WB-1 In-line Impedance Matching Device Instruction Manual 5 Forbes Rd. Newmarket, NH 03857 603. 659. 5170 · Fax 603. 659. 5388 e-mail: tech@russound. com 28-0012 Product Overview The WB-1 is designed to match the impedance of the speakers to the amplifier. Some amplifiers require an 8-ohm to 16-ohm impedance load represented by the speakers. The WB-1 is available by order in a 2x, 4x or 8x impedance-matching configuration. When operating an 8 to 16-ohm amplifier with speakers that represent a 4-ohm or 6-ohm impedance, the amplifier will not operate properly. The WB-1 with a 2x configuration allows the operation of the 4-ohm to 6-ohm speakers with an amplifier that requires an 8-ohm load. [. . . ] Specifications Power Rating: 126 Watts power handling 42 W/ch RMS continuous Terminations: Spring-loaded terminals Wire Size: Up to 12 gauge wire Dimensions: 3 1/4"W x 2 1/4"H x 3 1/4"D (8. 3 x 5. 7 x 8. 3 cm) Weight: 2 lbs. (0. 9 kg) Impedance Matching For 8 Ohm Amplifiers 8 Ohm Pairs 0 1 2 3 4 012345678 - 2X 4X 4X 8X 8X 8X 8X 2X 4X 4X 8X 8X 8X 8X 4X 8X 8X 8X 8X 8X 8X 8X 8X 2 4 Ohm Pairs 3 [. . . ]