Full-range, bandpass, dual-port in-ceiling loudspeaker.
9 5/8" Diameter
Big Sound from Speakers You Won't See, on a Budget
A big speaker that delivers big sound, yet vanishes into your room’s decor. The 90-RT is perfect for use as stealth mains, rears and side surrounds in a high performance home theater, or for bringing dynamic sound to alternate zones from your main stereo listening room.
Vanishing 90-RT Features:
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.
Painted to match your décor, Vanishing Series built-in speakers are virtually indistinguishable from their surroundings.
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.
Vanishing Series RT speakers are timbre-matched to Polk RTi speakers to insure utterly seamless blending from speaker to speaker in systems that combine traditional and built-in speakers.
Dual bandpass bass ports are highly efficient in small enclosures, and smoothly funnels 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.
All Polk products are made using the best materials and the most advanced manufacturing techniques. They pass the industry’s most exhaustive quality tests, including drop testing, extreme signal response and UV & salt exposure testing. Polk loudspeakers are built to perform for a lifetime.
|Diameter||3 1/4" (8.26cm)|
|Type||Dynamic Balance driver with mineral-filled polypropylene cone|
|Type||Dynamic Balance woofer with mineral-filled polypropylene cone|
|Total Frequency Response||30Hz-27kHz|
|Upper -3dB Limit||25 kHz|
|Lower -3dB Limit||43 Hz|
|Nominal Impedance||8 ohms|
|Recommended Amplifier Power||10-125 watts per channel|
|Inputs||Gold-plated spring-loaded posts|
|Cut-Out Diameter||8 3/16" (20.80cm)|
|Overall Diameter||9 5/8" (24.45cm)|
|Mounting Depth (includes 1/2" drywall)||8 7/8" (22.54cm)|
|Pre-Construction Bracket||PB LC60i|
|Overall Depth||9 3/8" (23.81cm)|
|Unit of Measure||each|
|Total Shipping Weight||10.5 pounds|
Specifications, dimensions and features subject to change without notice. For more information call us at 1-800-377-7655 (USA and Canada). Outside of North America call +1 (410) 358-3600.
Want to know more? Want to dig just a little deeper to learn about this product? Here's a list of source material that will give more detail, other perspectives, and answer questions you may have.
Frequently Asked Questions
- Where do in-wall and in-ceiling speakers go?
- Why are my speakers distorting and popping?
- What's the best way to install in-wall or in-ceiling speakers?
- What wire should I get? What gauge?
- How do I choose between all the different home audio speakers?
- What floorstanding speakers match in-wall speakers?
- How long is the warranty on Polk loudspeakers?
- How do I obtain service for my loudspeakers?
- The Challenges of Custom Installation (PDF)
- Are you looking for a Performance Enclosure for your in-wall product?
Works with Vanishing Series 900-LS, 90-RT, 620-RT and TCi Series TC60i, TC620i