[. . . ] TLX105, TLX121, TLX151, TLX171, TLX181 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. RIGHT LEFT ­ + ­ + ­+ RIGHT ­+ LEFT Speaker Outputs 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. · If more than one pair of main speakers is being used, check the minimum impedance requirements of your receiver/amplifier. [. . . ] Occasional refinements may be made to existing products without notice, but will always meet or exceed original specifications unless otherwise stated. CEL EB RAT I NG 0 YEAR JBL Consumer Products 80 Crossways Park West, Woodbury, NY 11797 8500 Balboa Boulevard, Northridge, CA 91329 1-800-336-4JBL (4525) (USA only) www. jbl. com 1997 JBL, Incorporated. [. . . ]