[. . . ] 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. [. . . ] Wiring "out of phase" results in thin sound, weak bass and a poor stereo image. Center Speaker + ­ Receiver Front Left + ­ Center + ­ Front Right ­ + Left Surround + ­ Left Surround + ­ Right Surround ­ + Right Surround + ­ Troubleshooting If there is no sound from the surround speakers, check the following: · Check all wires and connections between receiver/ amplifier and speakers. · Review proper operation of your receiver/amplifier and its surround-sound features. · Make sure the movie or TV show you are watching is recorded in Dolby* Surround. If it is not, check to see if your receiver/amplifier has other surround modes you may use. If there is no sound from the center speaker, check the following: · Make sure that your receiver's Center Channel Mode is in the "normal" or "wide" position. If it is in the "phantom" position, the center speaker will not play. [. . . ] Flix10/20OM A Harman International Company 5 in this owner's manual are in compliance with technical standards: EN 50 081-1/1992 EN 50 082-1/3. 1995 © Steen Michaelsen JBL Europe A/S Birkerød. [. . . ]