Built-in sound column Polk Audio 900-LS, 150W, 3-band

The full-range 3-way driver array means you get full-size speaker performance in a built-in!
Extra deep well design with a Cassini oval woofer mounted above and behind the main driver & tweeter array, for broad coverage and dynamic full-range audio performance in a small diameter built-in.
Vanishing® Series built-in speakers feature our exclusive wafer-thin Sheer-Grille, a magnetically-secured grille that protrudes only 7mm from its surroundings. Sheer-Grilles have almost transparent, ultra-small perfs, and are acoustically inert, for dynamic, unimpeded sound and more uniform coverage, even in larger rooms.
Painted to match your décor, Vanishing Series built-in speakers are virtually indistinguishable from their surroundings.

IN-CEILING SPEAKER

• Depth 9.38" (23.83 cm)
• (1) 3.25" (8.26 cm) d (Round) Dynamic Balance driver with aerated polypropylene cone - Midrange
• (1) 6" (15.24 cm) d (Round) Dynamic Balance woofer with mineral-filled polypropylene cone - Subwoofer
• (1) 0.75" (1.91 cm) d (Round) Ring radiator - Tweeter
• Grille Dimensions 9.63" (24.46 cm) diameter

IN-CEILING MOUNT

• Shape Round
• Dimensions 8.19" (20.8 cm) diameter

AUDIO QUALITY

• Total Frequency Response: 28 Hz → 33,000 Hz
• Nominal Impedance: 8 ohms
• Sensitivity (1 watt @ 1 meter): 90 dB
• Lower and Upper -3dB Limits: 40 Hz → 29,000 Hz

EXTERNAL AMPLIFIER

• Recommended Amplifier Power Per Channel: 10 watts → 150 watts

INPUTS

• Audio Inputs
• Speaker Inputs: (1) Pair of Push Connectors - Gold-Plated