Adastra SL6 Specifications Adastra KV5 Ceiling Speaker 5.25" 40W Glass-Aramid Cone Premium 8 Ohm Pro Audio. Adastra KV6 Ceiling Speaker 6.5" 60W Glass-Aramid Cone Premium 8 Ohm Pro Audio. A high-grade ceiling speaker featuring a hi-flex polypropylene cone main driver for extended low frequency response, and a mylar tweeter unit for accurate HF reproduction.
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