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Polk Audio 80F/X-RT

In-ceiling surround speakers

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  • Polk Audio 80F/X-RT

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  • Polk Audio 80F/X-RT

 

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

by Marshall Chase
Polk Audio

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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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

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Enclosure Type
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In-ceiling
Video Shielded
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No
Tweeter
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Dome
Midrange Size
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---
Woofer Size
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8
Woofer Composition
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Mineral composite poly
Woofer Surround
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Rubber
Power Range (Watts)
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10-100
Sensitivity
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87 dB
Impedance (Ohms)
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8
Frequency Response
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50-25kHz
Connector Type
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Spring post
Bi-Amp Inputs
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No
Parts Warranty
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Lifetime
Labor Warranty
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Lifetime
Product Research
What's in the box?

Download owner's manual

  • 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

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 open the box, verify contents, 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.

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.

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"
 
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Polk Audio 80F/X-RT Reviews

Average Customer Review:

7 people say:

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Filter by rating:
5 out of 5

Ceiling speakers

Written By Trickyt, Cypress, TX on Wednesday, March 05, 2014
Crutchfield Customer Review (What's this?)
 
Wonderful sound and easy to use
Pros:
great sound
Cons:
none
Was this review helpful?    Yes | No
 
4 out of 5

Polk Audio 80F/X-RT

Written By bobby, portland, or on Monday, February 24, 2014
Crutchfield Customer Review (What's this?)
 
We are using these for surround in 5.1 setup alongwith 70 rt for front firing with 550 wi sub. They blow you off as surround.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Great product

Written By Anonymous, Sunrise, fl on Saturday, January 18, 2014
Crutchfield Customer Review (What's this?)
 
Great speaker exceptional quality of sound and the magnet grill system is amaizing
Pros:
Crisp, quality speakers
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Polk Audio 80 f/x-rt

Written By JP, Chula Vista, CA on Monday, December 23, 2013
Crutchfield Customer Review (What's this?)
 
I installed these speakers as my fronts (right and left) and my rears (right and left)! They sound awesome! Very clear sounding and I have not heard any distortion when I crank it up. I am using a Pioneer VSX-30 to run them. I would recommend these speakers! Easy to install with the template, once you pick your positioning and get the holes cut out.
Pros:
Price, easy to install, look good and sound awesome! Delivered on time and well packaged.
Cons:
No cons...They sound great!
1 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Polk Audio 80F/X-RT

Written By DougB, St. George, UT on Thursday, December 05, 2013
Crutchfield Customer Review (What's this?)
 
Absolutely awesome speakers! Using them as rear surround sound in a 5.2 system. Now I need to upgrade the front SS speakers because these blow them away. We have an odd layout and could only fill the rear void with in ceiling speakers. I was worried how the sound would carry down and still sound like rear speakers. These are great, the sound travels well and it's hard to tell they are in the ceiling about 6 feet up from our heads.
Pros:
Install easy, sound great, paintable grills hide them pretty good.
Cons:
None
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Reviews for the Polk Audio 80F/X-RT

Written By Ronald P, Houston Texas on Wednesday, November 20, 2013
Crutchfield Customer Review (What's this?)
 
Great Sound
Pros:
Price
Cons:
none
Was this review helpful?    Yes | No
 
5 out of 5

Polk Audio 80F/X-RT

Written By Erick, Fort Worth, TX on Wednesday, November 28, 2012
Crutchfield Customer Review (What's this?)
 
These speaker are awesome. I am using them for my rear surrounds on my 7.1. 5 star product.
Pros:
Good sound... quality construction... easy install. Arrvived in secure package and in timely manor.
Cons:
Crutchfield had me install backwards with woofer angled towards wall.... polk had me angle to listening area.
7 out of 7 people found this helpful
Was this review helpful?    Yes | No
 

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For a more in-depth review and enhanced detailed information on the Polk Audio 80F/X-RT, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_10780FXRT/Polk-Audio-80F-X-RT.html ).

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