[. . . ] Reproduction or publication of the content in any manner, without express permission of the publisher, is prohibited. [. . . ] Be sure that your power amp is turned off before connecting the speakers. Therefore this speaker is intended for indoor use only, use of this product outdoors, in humid conditions, voids all warranties. Cables to be used: You can use readymade cables such as our JB SYSTEMS codes 2-0505 (5m) or 2-0510 (10m) or 2-0525 (25m). Be sure to connect the same colour on each side of the cable to the corresponding contact!If you inverse the conductors, poor sound quality with a lack of low frequencies will be the result. In many cases you can obtain even better results using the SE-100 Sound Processor also crossed at +/-130Hz. NEGATIVE = -1 Attention: when a second speaker is connected, the impedance drops from 8 to 4!However, if your amplifier supports 2 loads, you can connect up to 4 cabinets to each amplifier output. [. . . ] Clean the cabinet with a sponge and some non aggressive soap solution. [. . . ]