Vanishing Series In-Wall Loudspeakers: The Polk Audio
Vanishing Series 625-RT in-wall 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 wall. 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 Compensation control.
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
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
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-wall loudspeaker.
Woofer: The 625-RT in-wall 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 performance-robbing resonances.
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
Reflective Room (Tweeter) Compensation Control: An easily accessible
Reflective Room (Tweeter) Compensation switch allows you to make detailed
adjustments to optimize the sound for any installation. The switch can be used to digitally
compensate for harsh reflective
surfaces. The switch doesn't merely reduce high frequencies, it actually allows you to
"notch-out" a specific area of the spectrum (3500-6000Hz) where room acoustics
most often interfere with performance. The switch has two settings:
- Filter Setting: If your listening room is very reflective, with
smooth sheetrock walls, hardwood floors, and non-cushioned furniture, the
sound will be overly "bright" and unnatural. Selecting the "Filter" setting
compensates for the effect of reflectivity in a hard room. Tweeter
attenuation flattens room response, without hindering higher frequency
response, for warmer, more realistic sound and more accurate imaging.
- Normal Setting: If your room is not reflective, with curtains,
artwork, lots of cushioned furniture and carpeting, sound will be absorbed
by the room, resulting in more realistic reproduction and more accurate
imaging. In this case, select the Normal setting.
Timbre-Matched: The Polk Audio Vanishing Series in-wall 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-wall speaker is 35Hz to 25kHz, and the -3dB frequency
response is 50 to 23kHz.
Infinite Enclosure Design
Infinite Baffle Tuning: Infinite Baffle Tuning uses the
virtual enclosure of the in-wall space for deep bass response and superior
Wafer-Thin Sheer-Grille: The Polk Audio Vanishing Series in-wall
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 wall. Brushes or
rollers should not be used to paint the grille, as this will clog the perf holes.
Gold-Plated Spring-Loaded Posts: The 625-RT has a gold-plated
pair of spring-loaded binding posts that can
accept up to 12-gauge wire, single banana plugs, or pin connectors.
Applications: You can use the Polk Audio Vanishing Series
in-wall loudspeaker as in-wall rear surrounds to complete an RTi Series speaker
system, or for superior dynamics in practically invisible multi-zone music
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 wall.
Installation: The 625-RT can be installed in new or existing
- Existing Construction: In existing walls, use the
included cardboard template for one-cut, drop-in simplicity.
- New Construction: Pre-construction brackets (sold separately) are
available for new-build or open-wall retro-fitting.
|In-Wall Dimensions||Model # 625-RT|
|Overall Dimensions (with grille)||Width = 8.875"|
Height = 14.375"
|Cutout Dimensions||Width = 7.25"|
Height = 12.75"
|Speaker Depth||Depth = 3.5"|
|Mounting Depth (using 1/2"
drywall)||Depth = 3.0"|