User manual JBL SC305

[. . . ] 2) On the floor directly in front of the monitor. Place the angled side of the cabinet on the floor so that the speaker grille/baffle is pointing directly at the listener. [. . . ] 3). Center Speaker Blk Red (-) (+) POWER HANDLING Thanks to its high efficiency, the JBL SC305 loudspeaker will produce reasonable volume levels in a room of moderate size with very little amplifier power. However, using a small amplifier to obtain the desired volume listening levels may lead to overdriving the amplifier. This will generate high distortion levels and may cause damage to your loudspeaker. For the best performance, an amplifier should be selected with an output rating that is greater than the maximum power that will be used. This margin of reserve power will ensure that the amplifier will not attempt to deliver more power than its design allows. However, the amplifier's power rating per channel must not exceed the maximum recommended amplifier power for that specific loudspeaker model. Please see the specification section for details. Following these guidelines will provide virtually distortion-free sound reproduction and long loudspeaker life. ·· AV Receiver TROUBLESHOOTING The vast majority of new speaker "malfunctions" end up being traced to connections or switch settings. Check the following tips first, before requesting service. · · Center (-) (+) Fig. 3 The red terminal on the loudspeaker should be connected to the red or (+) center channel connection terminal on the AV receiver or amplifier, and the black to the black or (-). Connecting the loudspeaker in this manner ensures that it will be in phase; that is, work together rather than in opposition to the left and right channel speakers. Connecting loudspeakers out of phase will not damage them, but will result in less bass and poor imaging. Using the controls on your center channel AV receiver/amp, adjust the center channel level (volume) control so that the sound from the center speaker is the same level at your normal listening position, as the sound from the left and right front speakers. No sound at all or very faint sound from the center channel speaker 1. One of the connections between sound source and AV receiver/amp is faulty or has become disconnected. [. . . ] If for some reason this is impractical, in the United States, call 800336-4JBL for your nearest warranty station. Military personnel who purchased from authorized military outlets should return them to a similar outlet or contact: ALA Associates Enterprises 985 Ponce de Leon Avenue Atlanta, GA 30306 Phone: 800-875-4252 FAX: 404-873-3592 If purchased outside the United States, contact your local distributor to make arrangements for repair service. [. . . ]