CM4 Black 4" Ceiling/Panel Speaker 16Ω 100mmThe CM4 is a small 4 low impedance ceiling mount speaker. It is so stylish and discrete that it fits into any interior style or decoration, private or public. This speaker is small but offers good musical and speech quality. The acoustical metal back can improves the sound response and protects against falling debris. This design makes CM4 speaker ideal for use in strip metal or perforated tile ceilings. Those ceilings allow the air that displaced by