The PE604WU is a pendant speaker designed for the installations suspended from a ceiling. A directlyattached 5 m (16.4 ft) hanging wire allows the speaker to be suspended from high ceilings. The PE604WU is driven on both highimpedance (100 V, 70 V and 25 V) and lowimpedance (8 Ω) lines. The input power (impedance) can be easily changed at the upper side of the speaker. The PE604WU is certified to UL 1480 UUMW and ULCS541 standards. Using the supplied GRIPPLE(R) hangers will facilitate the speaker mounting height adjustment.