Polk Audio 620-RT

In-ceiling speaker

Outlet: Open Box

Item #: 107620RT

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9 Reviews

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Your home theater proposal got the "green light" but free-standing surround speakers were given the kibosh by a major stakeholder. Don't despair. Grab a pair of the Polk Audio 620-RT speakers. They install discreetly overhead, so you can keep your surround sound speakers out of sight or add music to rooms where conventional speakers just won't cut it.

Great quality + a vanishing profile = consensus
The 620-RT speakers uses a 6-1/2" woofer and a 3/4" pivoting silk-polymer dome tweeter for outstanding lifelike sound. Polk's patented port design delivers full range so you'll sacrifice nothing but an obtrusive outline. Paintable magnetic speaker grilles fit flush in the ceiling. The only time you'll be aware of these 'RTs is when you hear the whoosh of a jet engine overhead or shouts from behind you from a favorite film soundtrack.

Might as well invite the whole family over
Complete your system with other members of Polk's Vanishing RT series of speakers. You may also want to peruse their renowned, sonically matching RTi speakers. Build a home theater that will thrill and delight for years to come.

An optional in-wall bracket is recommended for installing the 620-RT speaker in a home with new construction.

Got wire?
Most speakers don't include any. Learn more about in-wall wiring at the Crutchfield Learning Center.
Shop our selection of in-wall speaker wire.

Product Highlights:

  • sold individually
  • frequency response 52-23,000 Hz (-3dB)
  • 3/4" pivoting silk/polymer dome tweeter
  • 6-1/2" Dynamic Balance® woofer
  • Infinite Baffle Tuning for improved bass response
  • handles up to 100 watts
  • sensitivity 89 dB
  • 8-ohm impedance
  • paintable Sheer-Grille™ for stealth installation
  • cutout: 8-3/16" diameter
  • mounting depth: 4-1/4"
  • lifetime warranty

Hands-on research

What's in the box?

Download owner's manual

  • Round in-ceiling speaker
  • White metal grille
  • Mounting template
  • Owner's Manual
  • Sheer-Grille Painting instructions
  • Online Registration Card
  • Polk Audio product brochure

Features and Specs

Enclosure Type In-ceiling
Video Shielded No
Tweeter Dome
Midrange Size N/A
Woofer Size 6.5
Woofer Composition Polymer composite
Woofer Surround Rubber
Power Range (Watts) 10-100
Sensitivity 89 dB
Impedance (Ohms) 8
Frequency Response 52-23kHz
Connector Type Spring posts
Bi-Amp Inputs No
Parts Warranty Lifetime
Labor Warranty Lifetime

Product Research

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 Compensation control.

Driver Technology
Infinite Enclosure Design
Connections
Mounting Options

Driver Technology

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 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 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 23kHz.

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.

Connections

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.

Mounting Options

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 music systems.

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 construction:

  • Existing Construction: In existing ceilings, 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-ceiling retro-fitting.

Dimensions:

in-ceiling Dimensions Model # 620-RT
Overall Dimensions Frame Diameter: 8.915"
Grille Diameter: 9.589"
Mounting Depth: 4.6875"
Cutout Dimensions (using 1/2" drywall) Cutout Diameter: 7.904"
Mounting Depth: 4.1875"

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Polk Audio 620-RT Reviews

Average Customer Review:

9 reviews
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Very nice

Written By Craig, Philadelphia on Wednesday, March 04, 2015

Crutchfield Customer Review (What's this?)

First, I have been researching for months, cause I wanted the best sound for the price.. Well that time paid off.. I purchased 4 of these with a 255c-rt as the center (all inceiling). Bass was actually impressive. But if you want full effect, get a woofer.. It's clear, warm and detailed.. And it doesn't break the bank... Highly revommrndec

Pros: Easy installation Aimable tweeter

Cons: Non. Go buy them

Polk Audio 620-RT

Written By Nehro, Sin City on Monday, December 01, 2014

Crutchfield Customer Review (What's this?)

Very Good speakers as I expected. The installation instructions and provided template were very precise. The installation went well and I actually enjoyed the process. I would say you need to be a little handy to get thing right with no hiccups. Sound quality is good and in line with price of the product. Quality wise and appearance is very good. Time will tell how reliable the speaker is.

Pros: Installation, quality and sound.

Cons: none.

Good sound

Written By Ryan, Salina KS on Saturday, October 18, 2014

Crutchfield Customer Review (What's this?)

These are good general purpose speakers. They are not top of the line but a great sound for the price

Pros: crispness

Cons: bass is minimal

Great Speakers

Written By DonP, Lebanon, PA on Monday, June 09, 2014

Crutchfield Customer Review (What's this?)

Bought them for our home theater and am quite satisfied with the sound. I would recommend them to others.

620 rt

Written By Pete, NY on Monday, April 14, 2014

Crutchfield Customer Review (What's this?)

For the price they are great fills the kitchen very well

Pros: Great sound compared to high end price speakers

Cons: None

Great sound

Written By Ben I, Central Florida on Saturday, December 21, 2013

Crutchfield Customer Review (What's this?)

I installed speakers in ceiling sound is great and look is wonderful, speakers do vanish.

Pros: Sound is so much better than last speakers, Home theather has come to life.

Cons: I installed these myself, I do not recommend a beginner doing it.

Solid speaker

Written By SurroundSound, Portland, OR on Tuesday, December 17, 2013

Crutchfield Customer Review (What's this?)

We purchased the 620-RT for front right/left/center speakers use in a pre-wired room. The 620-RT is simple to install and the sound output is clean. The construction of the speaker itself is solid and an obvious step up from the cheaper RC60i's. We are using these for both music and theater and are very pleased with the performance. The magnetic "grill" cover makes for a nice low profile (flat) look too.

Pros: Solid construction of cones and magnets, easy install in ceiling and nice wire attachment posts, magnetic cover "grill"

Nice quality sound, easy install

Written By SK, Honolulu, HI on Saturday, November 16, 2013

Crutchfield Customer Review (What's this?)

I have bought two sets of these and the sound is great for small to mid-size rooms. Nice clean look and easy install. I have installed these both with and without the optional mounting brackets. The brackets are really only needed to show your drywall guys where to cut the holes, they do not help much for actual installation.

Pros: Great sound quality for the price Easy install Clean look

Cons: None

Polk ceiling speakers

Written By Ricardo R., Miami, FL on Monday, November 11, 2013

Crutchfield Customer Review (What's this?)

Great sound, it blends perfectly with the ceiling, much better surround result than I had before.

Get everything you’ll need to enjoy your new Polk Audio 620-RT

UL-listed speaker wire is designed to be run through walls and is building code compliant. Most speakers don't include speaker wire.
Use special hardware to give your speakers a sturdy and professional looking installation.
Set the volume level in your remote location without going back and forth from room to room.
A speaker selector will let you control multiple pairs of speakers from a single location.
Have your speakers installed by qualified professionals.
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