Vanishing Series In-Ceiling Loudspeakers: The Polk Audio
Vanishing Series 620-RT in-ceiling loudspeaker features a precision-engineered,
minimally flanged design. Polk's exclusive Sheer-Grille protrudes only 7mm from
its surroundings, and installs virtually-flush in your ceiling. Mounting the
speaker is simple with a one-cut, drop-in installation and the rotating cam
stabilizing system. The speaker provides superior high-performance sound from
its 6.5" woofer and aimable 0.75" tweeter with Reflective Room
Infinite Enclosure Design
Dynamic Balance Technology: Laser-imaging technology allows
Polk Audio engineers to see the entire vibrating surface of a driver and tweeter.
This allows the engineers to actually see performance-robbing distortion develop
on the speaker cone. Using this data, they can determine the Dynamic Balance of
their high-tech materials, and alter the geometry and construction of the speaker
to effectively tune out the offending resonance. Exclusive Dynamic Balance Composite
Material Technology delivers sound that is effortlessly clean and clear, even at
lifelike volume levels.
Klippel Optimized Motor Structures: The Klippel Distortion
Analyzer allows Polk engineers to optimize each driver's motor structure, voice
coil alignment and suspension to insure smooth, unimpeded movement even at extreme
listening levels. This is especially important in the shallow depth area afforded
an in-ceiling loudspeaker.
Polymer Composite Woofer: The 620-RT in-ceiling loudspeaker
employs a 6.5" Dynamic Balance polymer composite cone woofer with a rubber
surround for a smooth, consistent frequency response. The driver features a
lightweight, strong composite basket that works in conjunction with Klippel
Optimization to keep moving parts in rigid alignment while further damping
Silk Dome Tweeter: The speaker employs a 0.75" Dynamic
Balance silk polymer composite dome tweeter for crisp, clear imaging. The
high-performance tweeter features a 15° swivel housing, for more direct high
frequency control, excellent off-axis imaging and more placement flexibility.
Timbre-Matched: The Polk Audio Vanishing Series in-ceiling
loudspeakers are timbre-matched to Polk Audio's high-performance RTi bookshelf
and floor-standing loudspeakers. This allows you to match them to an existing
Polk Audio home theater speaker system and enjoy seamless blending from speaker
to speaker. Timbre-matched speaker components will insure the same true response
throughout your system.
Frequency Response: The overall frequency response of the
in-ceiling speaker is 35Hz to 25kHz, and the -3dB frequency response is 52 to
Infinite Enclosure Design
Infinite Baffle Tuning: Infinite Baffle Tuning uses the virtual
enclosure of the in-ceiling space for deep bass response and superior overall sound.
Wafer-Thin Sheer-Grille: The Polk Audio Vanishing Series
in-ceiling speakers feature Polk's exclusive wafer-thin Sheer-Grille, a magnetically
secured grille that protrudes only 7mm from its surroundings. The Sheer-Grille
can be painted to match your décor, making it virtually indistinguishable from
its surroundings. The Sheer-Grille has nearly transparent, ultra-small perfs,
and are acoustically inert, for dynamic, unimpeded sound and more uniform
coverage, even in larger rooms.
Note: When painting the grille, it is
highly recommend that you use a can of spray paint matched
to the color of the surrounding ceiling. Brushes or rollers
should not be used to paint the grille, as this will clog
the perf holes.
Gold-Plated Spring-Loaded Posts: The 620-RT has a pair of
gold-plated spring-loaded binding posts that can accept single banana plugs,
pin connectors, or bare wire up to 12-gauge.
Applications: You can use the Polk Audio Vanishing Series
in-ceiling loudspeaker as in-ceiling rear surrounds to complete an RTi Series
speaker system, or for superior dynamics in practically invisible multi-zone
Rotating Cam System: The speaker utilizes a rotating cam
system to ensure a secure, vibration-free installation. There are six rotating
cams to hold the speaker securely to the ceiling.
Installation: The 620-RT can be installed in new or existing
- Existing Construction: In existing
ceilings, use the included cardboard template for one-cut,
- New Construction: Pre-construction
brackets (sold separately) are available for new-build or
| in-ceiling Dimensions || Model # 620-RT |
| Overall Dimensions ||Frame Diameter: 8.915" |
Grille Diameter: 9.589"
| Cutout Dimensions (using 1/2" drywall) ||Cutout Diameter: 7.904" |
Mounting Depth: 4.1875"