[. . . ] For over 50 years, JBL has been involved in every aspect of musical and film recording and reproduction, from live performances to monitoring the recordings you play in your home, car, or office. [. . . ] With the receiver/amplifier still turned off, confirm that its volume control is turned all the way down. If the receiver/amplifier has an A/B speaker switch, set it to correspond to the speaker terminals connected to the SCS110 system. Now, turn on your receiver/ amplifier and select a music source such as a CD player, cassette deck or FM tuner. Turn up the volume control slowly until you hear sound from the speakers. If the sound comes from the right speaker with the balance control to the left, the speaker wires have been reversed during hook-up. Turn the receiver/ amplifier "off" and switch both sets of speaker wires. Dolby Pro Logic*-equipped devices (AV Receivers, Surround Sound processors or decoders, TVs or other sources) include a "test tone" you can use to balance the volume of all the speakers in a surround sound system. Refer to the instructions accompanying your component for selecting the test tone mode and using it to balance speaker levels in your home theater. Troubleshooting If there is no sound from any of the speakers, check the following: · Receiver/amplifier is on and a source is playing. [. . . ] 7/96 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) 1996 JBL, Incorporated. [. . . ]