User manual BOSTON ACOUSTICS RK5

[. . . ] Do you want normal stereo imaging or is good balanced coverage of all the sound more important? an outdoor environment places special demands on a speaker system. You do not have the advantage of an enclosed, defined area. [. . . ] Or they can be wired so both channels are reproduced by each speaker, sacrificing stereo imaging for more even sound distribution of both channels. After the speaker locations have been chosen, you must run wires from the speakers to the amplifier that drives them. That is good enough for runs up to 50 feet or so. For runs of more than 50 feet use heavier 12 gauge wire. If the wire must be run more than 75 feet or if more than speaker channels are used, a high voltage distribution system is recommended. Such systems use a special amplifier that has a "70V" (or in some countries, "100V") output. This allows the relatively small gauge speaker wires to be run over great distances without signal degradation. The RK series speakers have provisions for mounting the transformer inside a cover located on the bottom of the speaker where the wires emerge. It is important that all the speakers in a system are hooked up with similar polarity or "in phase. " The speaker terminals on amplifiers are color coded and marked for polarity ­ typically red is + and black is ­. The RK series models have "pig tail" wire leads that extend from the bottom of the cabinet. The wires are color coded in the usual way ­ red is + and black is ­. The "left" side wire lead has yellow and black wires. All you have to do is make each connection the same way. This is particularly important with the RK6T2 and RK8T2. If they are conected improperly, they will produce almost no sound. The "pig tail" leads from the speakers are connected to the speaker wires with the supplied wire nuts that are filled with sealant. To connect the wires from the amplifier to the lead extending from the RK speaker, strip off /8" to 1/2" of the wire insulation. [. . . ] Even these rugged speakers can be damaged by a modest amplifier if it produces distortion. If you hear a harsh, gritty noise, turn down the volume. Prolonged or repeated operation of your speaker with a distorted signal from the amplifier can cause damage that is not covered by the warranty. [. . . ]