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Polk Audio 80F/X-RT

In-ceiling surround speakers

16 Reviews | 5 questions - 13 answers

Item # 10780FXRT

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Was: $299.99

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Overview

Our take on the Polk Audio 80F/X-RT

Hear your movies come alive
Your favorite film soundtracks materialize with the crack of gunfire from behind, or the patter of footsteps across the room. While the Polk 80F/X-RT surround speakers fill your home theater with vibrant sound effects, they virtually vanish into the ceiling. These stealthy speakers are designed specifically to produce an enveloping rear soundstage, each one equipped with dual 3/4" silk/polymer tweeters and an 8" woofer. High-quality construction keeps the drivers in rigid alignment, and practically eliminates muddying resonance. These speakers are voice-matched to Polk's renowned RTi series of free-standing speakers, as well as the rest of the in-wall and in-ceiling RT Vanishing series.

Hear your movies come alive
Your favorite film soundtracks materialize with the crack of gunfire from behind, or the patter of footsteps across the room. While the Polk 80F/X-RT surround speakers fill your home theater with vibrant sound effects, they virtually vanish into the ceiling. These stealthy speakers are designed specifically to produce an enveloping rear soundstage, each one equipped with dual 3/4" silk/polymer tweeters and an 8" woofer. High-quality construction keeps the drivers in rigid alignment, and practically eliminates muddying resonance. These speakers are voice-matched to Polk's renowned RTi series of free-standing speakers, as well as the rest of the in-wall and in-ceiling RT Vanishing series.

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Shop our selection of in-wall speaker wire.

They sound great. Seem to be built really well, easy to install. Really produce a great sound in our room along with our other Polk front speaker.

Alex, Utah

What's in the Box:

  • 2 Round in-ceiling surround speakers (separate left and right speakers)
  • 2 White metal grilles
  • Mounting template
  • Owner's Manual
  • Sheer-Grille Painting instructions
  • Online Registration Card
  • Polk Audio product brochure

Product Highlights:

  • frequency response 50-25,000 Hz (-3dB)
  • dual 3/4" silk/polymer dome tweeters
  • 8" Dynamic Balance® woofer
  • handles up to 100 watts
  • sensitivity 87 dB
  • 8-ohm impedance
  • wall distance switch for flexible mounting
  • paintable Sheer-Grille™ for stealth installation
  • cutout: 11-1/8" diameter
  • mounting depth: 4-3/4"
  • warranty: lifetime
  • Our 60-day money-back guarantee
Reviews

Polk Audio 80F/X-RT Reviews

Average Customer Review(s):

(16 Reviews)
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Details

Hands-on research

Features and Specs

Quantity in Package Pair
Tweeter Dome
Midrange Size ---
Woofer Size 8
Cutout Size 9.375
Woofer Composition Mineral composite poly
Woofer Surround Rubber
Power Range (Watts) 10-100
Sensitivity 87 dB
Impedance (Ohms) 8
Frequency Response 50-25kHz
Connector Type Spring post
Bi-Amp Inputs No
Enclosure Type In-ceiling
Parts Warranty Lifetime
Labor Warranty Lifetime

Product Research

Vanishing Series In-Ceiling Surround Speakers: The Polk Audio Vanishing Series 80F/X-RT in-ceiling surround speakers feature 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 speakers is simple with a one-cut, drop-in installation and the rotating cam stabilizing system. The speakers provide superior high-performance sound from their 8" woofers and dual 0.75" tweeters. There are two speakers, one left and one right, included in the box.

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-wall loudspeaker.

Woofer: The 80F/X-RT in-ceiling surround speakers employ an 8" Dynamic Balance mineral composite polypropylene 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 speakers employ two 0.75" Dynamic Balance silk polymer composite dome tweeters for crisp, clear imaging. The tweeters are angled so that they are firing away from each other for a more diffuse soundfield.

Wall Distance Switch: These in-ceiling speakers perform better when placed more than 2' away from side walls. If mounting limitations prevent mounting at 2' feet or more from the side wall, the close proximity of the wall can cause increased response between 50 and 200 Hz. This can make the speakers sound "boomy." To prevent this, the speakers have a "Wall Distance" switch that allows you to indicate the distance from the wall at less than 2' (< 2') or more than 2' (> 2'). The switch flattens the response to eliminate "boominess" without sacrificing deep bass response.

Timbre-Matched: The Polk Audio Vanishing Series in-ceiling surround speakers 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 speakers is 35Hz to 27kHz, and the -3dB frequency response is 50 to 25kHz.

Infinite Enclosure Design

Infinite Baffle Tuning: Infinite Baffle Tuning uses the virtual enclosure of the in-wall 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 or wall. Brushes or rollers should not be used to paint the grille, as this will clog the perf holes.

Connections

Gold-Plated Spring-Loaded Posts: Each 80F/X-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.

Mounting Options

Applications: You can use the Polk Audio Vanishing Series in-ceiling surround speakers for the rear channels in a 5.1- or 7.1-channel surround configuration. In a 5.1-channel system, the speakers should be mounted to the sides of the seating positions. When two additional in-ceiling speakers are installed, they should be mounted at the back of the room.

Note: Because of how the tweeters are angled and configured, the 80F/X-RT is not well suited as an in-ceiling Dolby Atmos or DTS:X speaker

Left/Right Orientation: The 80F/X-RT speakers have a left/right orientation, and each is clearly marked on the serial number label.

Rotating Cam System: The speaker utilizes a rotating cam system to ensure a secure, vibration-free installation. There are four rotating cams to hold the speaker securely to the ceiling.

Installation: The 80F/X-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-wall retro-fitting.

Dimensions:

In-Ceiling Dimensions Model # 80F/X-RT
Overall Dimensions (with grille) Diameter = 11.125"
Cutout Dimensions Diameter = 9.375"
Product Depth Depth = 5.25"
Mounting Depth (using 1/2" drywall) Depth = 4.75"

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.

Accessories
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Installed these outside ceiling of patio as well as family room sound is tremendous [ Chris  Jun 13, 2017 ]
Best overall price for good product with good reviews. Will be used as height speakers for Dolby Atmos. [ Michael  May 22, 2017 ]
Good reviews, description is what I needed. Good experience with Polk speakers in the past. [ Jeff  Apr 24, 2017 ]
Customer Reviews and price. [ John  Feb 10, 2017 ]
match my 265rt & 255c-rt's [ jason  Oct 23, 2016 ]
seems perfect for rear sound effects, along with 3 front 90rt [ EDGAR  Jul 18, 2016 ]
good value and matched with the other RT series in ceiling speakers I chose. [ Francesco Del  Apr 25, 2016 ]
I chose these for a couple reasons. The first being I am a Polk Audio fan. I have had a few different speaker systems and soundbars and have always been impressed with the sound quality. Secondly the fact that the speakers are angled. Rather than emitting the sound straight down, it can be deflected towards the prime seating/viewing area. [ Ian  Apr 13, 2016 ]
Great speakers for mounting in the ceiling [ Elizabeth  Dec 29, 2015 ]

5 questions already asked

Wall cavity is "box". Amazing speakers [ Christopher  Mar 24, 2017 ]
I did not use a backbox - only the Polk ceiling mount brackets. [ j  Mar 23, 2017 ]
You can use it as is. Its a great speakers [ yochai  Mar 23, 2017 ]
Tibor, I bought a pair of Polk 80F/X-RT to serve as my rear speakers and set op a 5.1 system. The Polk speakers were a great pair and they really compliment my audio system. The highs are crystal clear, midrange is good and the lows are great. Overall I'd have to say I'm most impressed by the highs. I was watching Saving Private Ryan the other night. All I can say I felt like I was with those guys during the opening scene with bullets hitting the tank traps. You can't go wrong with Polk. These are great speakers at a good price. w/r, Robert [ Robert  Mar 23, 2017 ]
Hello Peter, All I can tell you is the pair of 80fx/rt speakers work VERY well with my Polk Mains (RTiA9's). The 80's balance out the mains very well and I don't think you would be disappointed at all. By the way, what make/Model are your mains? Robert [ Robert  Jan 26, 2017 ]
Dude those polks rock !!! I have it on a denon receiver and I can crank it all the way up without a single distortion !!! My breaker trips before it gets to loud :( I had one mess up and crutchfield replaced it no questions asked. It depends on what ohm load th Bose pushes out and wattage . Compare it to the Polk . All I know is I really love those speakers as they sound grea [ MICHEAL  Nov 22, 2016 ]
the rt should be fine with your set up i have the a 7's same center better frequency responds using the 80 f/x [ ALVIN  May 03, 2015 ]
Thanks guys for the reply. That was really helpful. [ Sridhar  Nov 05, 2014 ]
Yes. They are good speakers and they can be used in stereo too. [ JEFF  Nov 05, 2014 ]
Suggest you direct your question to Polk Audio directly. They are very responsive to direct customer inquiries. These are nice speakers. They are great for music as well as surround sound. [ DAVID  Nov 03, 2014 ]
I have the 80R/X-RT set up as rear surrounds in my living room that opens to the kitchen. I have the MC-80's in the kitchen. However, we do also listen to music in 7 channel stereo, where these act as normal speakers. In my opinion, the 80R/X-RT speakers sound better. Of course they are more expensive. [ ALLEN  Nov 03, 2014 ]
We have our Polk Audion 80F/X-RT Speakers installed in very close to our kitchen. Our house layout is open, so the living, dining, kitchen, den areas are one contiguous space with no walls. These particular speakers are engineered to play crystal clear acoustics, for example with the 80F/X-RT you can hear a pin drop. They would work well in the kitchen, where you would not want overwhelming "bass booming" or a focus on low frequency sound. When installing the speaker you can control the direction where the sound is "aimed" (similar to most Polk speakers). After making your connections to the speakers and lightly fastening the compression connectors to hold them in your ceiling, turn on your audio and rotate the speakers until the sound is to your liking and then securely tighten the compression fittings to hold the speaker firmly in place. The bottom line is Polk Audio is a superior product and extremely durable. The entire speaker is corrosion proof, including the cone. These speakers will last forever and we would never again purchase any other brand speaker except Polk Audio. [ KEMPS M  Nov 02, 2014 ]
These speakers can be used where there is no surround sound wiring, basically they would just be used for audio sound such as from a radio. These are really exceptional speakers and will make any audio signal sound better. [ DOUGLAS  Nov 02, 2014 ]
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