User manual RUSSOUND WCN-12

[. . . ] In applications with amplifiers whose frequency range does extend below 20 Hz, a low-frequency protection circuit is needed to reduce subsonic signals that would otherwise cause amplifier shutdown. The Russound LFP-1 Low Frequency Protection Module is excellent for protecting these amplifiers. The WCN-12 is equipped with a rotary switch, mounted on the top of the printed circuit board, which can be set to the appropriate position based on the number of pairs of speakers connected in the system. [. . . ] If external volume controls are used, connect speaker wire from the appropriate speaker connector on the WCN-12 to the volume control input. 3. Operation All the connected speakers will be driven when the amplifier is operating. To ensure safe operation of the amplifier, an impedance level for the system must be selected using the rotary switch on the WCN-12. The switch must be set based on the following conditions: · If the amplifier and the speakers are both 4 ohms, set the rotary switch to the number of pairs of speakers connected to the WCN-12. · If the amplifier and the speakers are both 8 ohms, set the rotary switch to the number of pairs of speakers connected to the WCN-12. · If the amplifier is 8 ohms and the speakers are 4 ohms, set the rotary switch to TWICE the number of pairs of speakers connected to the WCN-12. · If the amplifier is 4 ohms and the speakers are 8 ohms, set the rotary switch to HALF the number of pairs of speakers connected to the WCN-12. 4. Setting System Volume It is important to properly adjust an impedance-matching system to avoid distortion or DC clipping (DC voltage will be produced from an amplifier that is overworked or that has an improper load). These can cause an amplifier/receiver to go into protection, and can cause autoformers on volume controls to heat up, damaging system components. To set up the system, the amplifier/receiver volume should be at its lowest setting, and the in-wall/selector volume control should be at the highest setting. Slowly adjust the amplifier/receiver volume to a level that is acceptable for the amplifier without clipping. 5. Specifications Power Rating/channel: 200 watts Power Handling 100 watts RMS/channel, continuous 300 watts peak Terminals: Removable modular color-coded snap connectors accept up to 14 gauge wire Impedance: Use with 4 ohm or 8 ohm amplifiers Mount: Standard 19" open frame allows rack or stud mounting Dimensions: 19"W x 3"H x 3"D (48. 3 x 8. 9 x 7. 6 cm) Weight: 5 lb. (2. 3 kg) Speakers Optional ALTx-2sc impedance-matching volume controls L+ L- R- R+ L+ L- R- R+ 1 2 3 4 5 6 AUTOFORMER L+ L- R- R+ 5-8 3-4 2 1 SPEAKER OUTPUT L+ L- R- R+ 9 Russound WCN-12 L+ L- R- R+ AMP INPUT 7 8 9 10 11 12 LFP-1 10-12 INPUT L+ L- R- R+ OUTPUT L+ L- R- R+ RUSSOUND LFP-1 DPA-4. 8 amplifier AP-48 AUDIO AMPLIFIER 4 ZONE -- 8 1 2 3 4 POWER ZONE Connection Diagram for Russound WCN-12 Audio Distribution Board (not to scale) IN IN WCN-12 AUTOFORMER Modular snap connector (detail) Modular Snap Connector Wiring Order WHITE -- L+ (left channel positive) GREEN -- L- (left channel negative) BLACK -- R- (right channel negative) RED -- R+ (right channel positive) CHANNEL AMPLIFIER DPA-4. 8 6. Optional Accessories LFP-1 Low Frequency Protection Circuit ALTx-2sc Impedance matching stereo volume control 7. Warranty The Russound WCN-12 are fully guaranteed for Ten (10) 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. [. . . ] 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 product 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. [. . . ]