[. . . ] ARC10, ARC30, ARC1000, ARC Center simple set-up guide thank you for choosing JBL. [. . . ] It is important to connect both speakers identically: (+) on the speaker to (+) on the amplifier and (­) on the speaker to (­) on the amplifier. Wiring "out of phase" results in thin sound, weak bass and a poor stereo image. ARC10, ARC30 ARC Center ARC1000 Standard Connection Bi-Wiring The ARC1000`s outer connection panel and internal dividing network are designed so that separate sets of speaker cable can be attached to th e low-frequency transducer and midrange/high-frequency transducer portions of the dividing network. Bi-wiring provides several sonic advantages and considerably more flexibility in power amplifier selection. Remove strapping bars. Single-Stereo Amplifier Dual-Stereo Amplifier Troubleshooting If there is no sound from any of the speakers, check the following: · Receiver/amplifier is on and a source is playing. If there is no sound coming from one speaker, check the following: · Check the "Balance" control on your receiver/amplifier. · Check all wires and connections between receiver/ amplifier and speakers. If the system plays at low volumes but shuts off as volume is increased, check the following: · Check all wires and connections between receiver/ amplifier and speakers. [. . . ] · Check all connections between processor/amplifier and the center speaker. JBL Cons u mer Pro ducts 80 Crossways Park West, Wo o d b u r y, NY 11 797 8500 Balboa Boulevard, No r t h r idge, CA 91329 1-800-336- 4JBL (4525) (USA o n l y ) w w w. [. . . ]