Polk Audio Vanishing Series 90-RT 9" Ceiling Speaker

Features:

• Wafer-Thin Sheer-Grille: 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 nearly transparent, ultra-small perfs, and are acoustically inert, for dynamic, unimpeded sound and more uniform coverage, even in larger rooms.
• Paintable: Painted to match your décor, Vanishing Series built-in speakers are virtually indistinguishable from their surroundings.
• Room Compensation: Reflective surfaces in rooms can make sound brighter and cause image distortion. Engaging the Vanishing reflective room compensation feature (by selecting the low setting) lowers the tweeter level to compensate for reflective surfaces. Vanishing reflective room compensation is a custom audio control that cuts the level only in the 4-5kHz range, exactly where reflectivity destroys sound quality. Outside this narrow 1kHz band, the tweeter retains its detailed and accurate high frequency response, for no loss of realistic musical details.
• Timbre Matched: Vanishing Series RT speakers are timbre-matched to Polk Audio RTi speakers to insure utterly seamless blending from speaker to speaker in systems that combine traditional and built-in speakers.
• Dual Band-Pass Bass Ports: Are highly efficient in small enclosures, they smoothly funnel the angled woofer's low frequencies down around the driver array, eliminating "chuffing," so your small, practically invisible in-ceiling speakers achieve superior full-range blending and broad coverage with surprisingly deep bass.
  
• Easy One-Cut, Drop-In Installation: Puts built-in audio within reach, with Perfect Fit templates, a precision flange, and (available) Pre-Construction Brackets; achieve secure, vibration-free efficiency with a simple turn of the patented Rotating Cam system.
  

Specifications:

• In-Ceiling Speaker
• Recommended Amplifier Power: 10-125 Watts Per Channel
• Total Frequency Response: 30Hz-27kHz
• Electrical 3dB Limit: 43 Hz -25 kHz
• Nominal Impedance: 8 Ohms
• Midrange Diameter: 3-1/4"
• Midrange Type: Dynamic Balance Driver with Mineral-Filled Polypropylene Cone
• Woofer Diameter: 9"
• Woofer Type: Dynamic Balance Woofer with Mineral-Filled Polypropylene Cone
• Tweeter Diameter: 3/4"
• Tweeter Type: Dynamic Balance Silk/Polymer
• Efficiency: 90 dB
• Inputs: Gold-Plated Spring-Loaded Posts
• Mounting Options: Integrated Keyhole Slot for Wall Mounting
• Cut-Out Diameter: 8-3/16"
  
• Mounting Depth: 8-7/8"
  
• Overall Depth: 9-3/8"
  
• Overall Diameter: 9-5/8"
  
• Weight: 4.53 kg
• Warranty: Lifetime