The DS1387 contains dual horizontally opposed four-inch diameter speakers. The compact enclosure includes a convoluted, flame-retardant, acoustical insert to eliminate standing waves and metallic resonance. Dynasound’s DS1387 sound masking speaker is designed for quick and easy installation under raised access floors and above suspended ceilings. The DS1380 provides uniform dispersion and is well suited for sound masking, paging and music signals. ARCHITECTURAL SPECIFICATIONS Sound masking assembly shall be Dynasound model DS1380. Unit shall contain dual 4-inch diameter loudspeakers, equipped with a 70.7V transformer, rectangular enclosure, acoustical baffle, and suspension eye-bolt. The unit shall be factory assembled, wired and ready for installation. The unit shall include an external tap selector switch with an off position and 1/4, 1/2, 1, 2 and 4 watt power taps clearly identified. Strain relief shall be provided to protect hook-up leads. The enclosure shall measure 6 inches long x 4 inches wide x 4 inches tall. Enclosure shall be internally acoustically dampened. Speaker shall be UL listed to conform to UL1480, UL2043.
Dual horizontally opposed speakers
Internal 70.7 volt transformer with rotary volume control