User manual FENDER 118SC

[. . . ] You see, your sound system is more than just a combination of dials, wires and speakers. It is an integral part of the audio chain and should be treated with special care and attention to detail. At Fender, we know what building quality musical instruments and sound reinforcement equipment is all about. [. . . ] The following polarity convention should be used when making connections to the 118s / 118sc: Polarity Positive (+) Negative (-) Phone Jack Tip Sleeve SpeakonTM 1+ and/or 2+ 1- and/or 2- SETUP SUGGESTIONS The placement of any speaker can dramatically affect its sound. Thus, there are three primary considerations to review when placing subwoofers. The mid/high racks should be as close as possible to the subwoofer so the sound from the subwoofer reaches the audience at the same time as the sound from the mid/high packs. If the subwoofer is placed too far from the mid/high packs, a slight smearing of the lower bass frequencies may occur. While ideal placement for this consideration would involve stacking the mid/high pack on top of the subwoofer, this effect is quite subtle and an obvious effect may not be heard until the separation between the two cabinets is large enough to cause an audible time delay. The second consideration is to try to obtain as much bass as possible from the subwoofer. A subwoofer hanging in free air is referred to as operating in "full space" since the subwoofer is free to radiate in all directions (omnidirectionally). A speaker in the middle of the floor or up in the air with its back against a wall is referred to as operating in "half space". Full space operation will result in about a 3 dB decrease in output as compared to half space. In order to compensate for the decrease in output using a full space configuration, the power amplifier may need to be turned up. Placing a speaker near a large, flat wall and on the floor (quarter space) will boost the bass performance by about 3 dB as compared to half space. The more surfaces the subwoofer is placed against, the fewer the number of subwoofer enclosures are needed to achieve a desired SPL. The third consideration is convenience and the visual aspect of the speaker array. For temporary installations, the subwoofer can be used as a support for a mid/high pack mounted directly on top of the subwoofer. [. . . ] RS 426-A Noise: 400W, for 8 hours Program: 800W Peak: 1600W Nominal Impedance: 8 Weight Height Width (front) Width (rear) Depth 85 lbs. 28. 5" 24. 6" 8. 8" 24. 1" (37 kg) (72. 4 cm) (62. 4 cm) (22. 2 cm) (61. 3 cm) DIMENSIONS WARNING: The length of the useful life of this cabinet will depend in substantial part upon how this cabinet is treated in use. The user of this cabinet must periodically have this cabinet inspected to ensure that continued use has not weakened the cabinet's structure, including the various joints which are fastened with glue and/or screws. [. . . ]