Polk 900-LS Full-Range, High Performace, Bandpass, Dual-Port In-Ceiling Loudspeaker Projector screen The slew rate measures how

The slew rate measures how quickly an amplifier can respond to a rapid change of input level

a 1" Terylene Tweeter and (2) 5

The specially designed UniPlate™ backplate and solid pole piece serve as a single heat-absorbing unit to provide excellent thermal management

Mic features polar pattern and frequency response tailored for intelligible vocal reproduction

Polk 900-LS Full-Range, High Performace, Bandpass, Dual-Port In-Ceiling Loudspeaker Projector screen The slew rate measures how900 LS Full Range, High Performace, Bandpass, Dual Port In Ceiling Loudspeaker. Audiophile Performance, Cutting edge Stealth Design Mount your woofer behind your main driver array, and suddenly you're able to extend a speaker's dynamic range into previously unexplored areas! Especially for a built in in ceiling speaker. The 900 LS delivers surpisingly broad coverage and bold, full range audio performance. Big enough to use as stealth mains, stealthy