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Polk Audio 70-RT

In-ceiling speaker

Item # 10770RT

This great-sounding speaker hides in plain sight Polk's Vanishing Series 70-RT speakers stand out audibly ...

This great-sounding speaker hides in plain sight Polk's Vanishing Series 70-RT speakers stand out audibly ...

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Item # 10770RT

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$249.99 -$50.00 Price break

$199.99 each

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About the Polk Audio 70-RT

This great-sounding speaker hides in plain sight
Polk's Vanishing Series 70-RT speakers stand out audibly — not visually. Your favorite rooms don't have to be silent any longer just because you can't or don't want to put free-standing speakers there.

This great-sounding speaker hides in plain sight
Polk's Vanishing Series 70-RT speakers stand out audibly — not visually. Your favorite rooms don't have to be silent any longer just because you can't or don't want to put free-standing speakers there.

Polk's clever design yields big bass from a smaller space
Polk ingenuity fills their Vanishing Series speakers to overflowing with clear, full-range sound. Each model has three drivers — a tweeter, a mid-range and a woofer — packed into a smaller than an average space. Dual port bandpass technology ensures that you'll get deeper sound with a diminutive-sized speaker. Their paintable, seamless-profile magnetic grilles make it simple for these speakers to fit perfectly into your surroundings.

Might as well invite the whole speaker family over
Get two 70-RTs to listen to music in the den, or add more for a great sounding home theater. They're also a pretty close sonic match to Polk's renowned free-standing RTi speakers. Any way you choose, you'll get harmonious results.

An optional in-ceiling bracket is recommended for installing the 70-RT speaker in a home with new construction.

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

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Product highlights:

  • sold individually
  • frequency response 48-25,000 Hz (-3dB)
  • three-way speaker design includes:
    • 3/4" silk/polymer dome tweeter
    • 2-1/2" midrange speaker
    • 5" x 7" Dynamic Balance® woofer
  • dual port bandpass enclosure for better bass response
  • selectable tweeter level switch for more flexible speaker placement
  • handles up to 125 watts RMS
  • sensitivity 90 dB
  • 8-ohm impedance
  • paintable Sheer-Grille™ for stealth installation
  • cutout: 6-1/2" diameter
  • mounting depth: 8-1/2"
  • warranty: lifetime
  • Our 60-day money-back guarantee
  • MFR # AW1170-A

What's in the box:

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

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Polk Audio 70-RT reviews

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Awesome Sound

Dennis from Muldoon, TX on 2/23/2019

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I bought these speakers for a new home my wife and I are building. We are probably about 4 months from actually installing them in the new home. For this reason, I hooked everything together to 55" TV and blue ray player to make sure of the working condition of the components. Sound awesome sitting just 4' apart. There is no doubt that this equipment will give us exactly what we were looking for . Thank to Cole for all of the help in putting together this system. Items purchased together: 1 Ea - Denon AVR Model S64OH 1 Ea - Polk Audio In-Wall Dual Center Channel 255C-RT 2 Ea - Polk Audio In-Wall Daul 265-RT (Front R&L) 2 Ea - Polk Audio 6-1/2"; 70-RT (Rear R&L) 1 Ea - Klipsch R-100SW 10" Powered Sub-Woofer

Pros:

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Crutchfield response on

1 of 1 found this helpful

Great speakers

Todd from Denver, CO on 2/11/2019

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We bought two of these for our new home in 2012. I prewired prior to drywall, did my location layout after we moved in, cut the holes in the living room ceiling drywall, and installed the pair in an hour--super easy. Rear surround effects are great and these blend well with our Polk RTi A7s and CSi A6 center up front. These speakers are a great value, but their enclosures do require a lot of room above the drywall--about 8". Could these speakers use a backbox? Maybe, but the back of this pair is open to the attic and I've got zero complaints about their frequency response in the room. Since we really like the living room speaker array, we decided to use the same set up in our newly constructed basement theater space. We have the same RTi A7 and CSi A6 speakers along with a pair of Polk 65-RT speakers for in-wall side surrounds and four 70-RT speakers in the ceiling. That rounds out a 5.2.4 Atmos set up that we have really enjoyed. For this install, I did use the installation kits (plastic straps/ring), but the drywall crew broke both straps at one location and caused a bit of an issue trying to install the one speaker. For the price I would expect something more robust to withstand the abuse it might endure during construction. If I had to do it over again, before drywall I would have checked to make sure I would miss ceiling joists and mounted the speakers without the rings...and saved $100. These are great speakers and a great value!

Pros: Great frequency response and detailed sound Easy to install Paintable magnetic grille Match well with the RTi-series speakers

Cons: Require considerable depth for install

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1 of 1 found this helpful

Polk Audio 70-RT

Crutchfield customer from Sarasota, FL on 1/6/2019

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They crush it!

Pros: Sleek and sexy

Cons: None

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0 of 3 found this helpful

Polk RT 70s

Mark from El Dorado Hls , CA on 12/12/2017

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Polk RT 70s or easy to install saved hundreds by being able to install myself

Pros: Easy to install

Cons: None

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1 of 5 found this helpful

Polk Audio 70-RT

Crutchfield customer from Elk Grove, CA on 6/1/2017

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Easy install and nice sound

Pros:

Cons:

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0 of 3 found this helpful

Nice Ceiling Speakers

Brian from Miami, FL on 4/3/2017

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I researched many in ceiling speakers and after much debate, I ordered four of the 70RT's for my living room. They are used just for music, and they sound great. The 5 X 7 woofer does a great job with mid bass and punches enough deep bass with some volume. I am powering them with an AudioSource AMP-310 and they perform better than I expected. Well worth the money!

Pros: Easy installation, great sound and clean appearance!

Cons: They are over 8" deep, just keep that mind for shallow installations!

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6 of 6 found this helpful

Polk Audio 70-RT

Joe from Germantown, MD on 3/10/2017

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I was a little skeptical of using in-ceiling speakers. After numerous calls to the fabulous Crutchfield team, I landed on 3 of these for the L-C-R i used the 70-RT's for the rear. I haven't had too long to enjoy them for movies. But, for music, they do a really nice job. And they aren't taking up valuable floor space where my wife can put stuff...lol Haven't added the sub yet. Probably in the next few weeks. I'll copy this review into the 70-RT field as well. Thanks Team Crutchfield! great advice as always!!

Pros: great sounding as rear surrounds

Cons: None yet

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3 of 3 found this helpful

Polk Audio 70-RT

Crutchfield customer from Bakersfield, CA on 12/31/2016

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Installed throughout my house and the sound is very good.

Pros:

Cons:

Crutchfield response on

1 of 2 found this helpful

Polk Audio 70-RT

Trenton from Powell, wy on 10/22/2016

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These speakers are great! Very very clean sounding with easy installation. I run these with an older onkyo model and I can't turn them up all the way with out getting blasted out of the room! Very good speakers.

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3 of 3 found this helpful

Movie theater quality

HG from Houston, TX on 8/18/2016

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Great outstanding sound ever, polk hut a home run with this speaker! Not that many affordable 3 way ceiling speakers out there but this one is a must have!

Pros: the sound Is clear as can be and the magnetic screen is very helpful

Cons: It's a little big, needs about 8 inches of clearance in ur ceiling

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5 of 5 found this helpful

Polk Audio 70-RT

B. Black from Hayward, CA on 6/7/2016

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First, I must admit that I am a huge Polk Audio fan. In fact, this is my fifth 5.1 system built using Polk Audio speakers. Since my new home was prewired for in-ceiling speakers, I decided to give the Polk Audio 70-RT speakers a try. Initially, I chose 620-RT, but I decided to step up to the 70-RT because I wanted the clarity that 3-way speakers usually provide. I installed 5 70-RT speakers (LF, Center, RF, LS, and RS) Sunday pairing them with a 10-inch Velodyne subwoofer and a Marantz SR5010 receiver. The system sounds great and my wife loves the near invisibility of the system. Since the speakers have only been installed for a couple days, I only gave them 4/5 stars. I'll update the review after everything is calibrated and broken in.

Pros: crisp highs, in ceiling mount means happy wife, good low end response considering the size and enclosure

Cons: deep mounting depth might be a problem for some

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4 of 4 found this helpful

Overkill for rear surround

jpw from California on 11/29/2015

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I purchased these in spite of advice to use smaller, cheaper speakers for rear surround. I should have heeded the advice. These seem like perfectly fine speakers. Can you resist buying what's appropriate when you could buy fancy? I couldn't. I'll take consolation when watching movie scenes featuring bullets whizzing by. The rest of the time I'll forget they're there.

Pros:

Cons:

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5 of 9 found this helpful

Polk Audio 70RT

HenryN from California on 10/25/2015

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These speakers were easy to install and sound amazing! I love them and they help make my surrounnd system sound terrific.

Pros: Easy install template, great rich sound.

Cons: none

Crutchfield response on

4 of 4 found this helpful

Polk Audio 70-RT

Crutchfield customer from Milwaukee, WI on 3/17/2015

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Easy to install and a great sound for the price.

Pros:

Cons:

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2 of 3 found this helpful

Polk Audio 70-RT

Crutchfield customer from Illinois on 1/7/2015

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Great Sound

Pros:

Cons:

Crutchfield response on

0 of 1 found this helpful

Great sound

Kody from Houston, TX on 3/6/2014

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This a great speaker. I worked with Crutchfield to set up what I needed and it sound awesome. Great highs and mids. I am using with denon avr 887.

Pros: Great speaker at a great price. Easy install comes with templet you need for mounting

Cons: I don't have any cons could not be happier with purchase. Or support. Buyer for life

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2 of 2 found this helpful

Polk Audio 70-RT

bobby from oregon on 2/24/2014

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Awesome clarity love them

Pros:

Cons:

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0 of 1 found this helpful

New media room

Michael B from California on 2/5/2014

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Easy to install and sound great, would highly recommend to others.

Pros: Easy to install, great sounding, used for front and center channel and paired with 80F/X-RT for surround and PSW-111 for bass.

Cons: None

Crutchfield response on

3 of 3 found this helpful

good 3 way speakers

Crutchfield customer from Gilbert on 12/16/2013

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I endorse the 70-RT. it worked properly for my 5+1 config.

Pros:

Cons:

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0 of 0 found this helpful

Great Surrounds

Jeff from Kansas City on 10/10/2013

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Installed four of these about a month ago in the basement ceiling. They are coupled to a Pioneer Elite SC-71 receiver with Polk RTiA7 fronts, a Blackstone TL3 center, and a DSWpro440wi and it sounds fantastic!! The supplied templates made it easy to install and my wife is happy too because the surrounds are out of the way.

Pros: Sounds great, magnetic covers fit perfect

Cons: None so far

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6 of 6 found this helpful

Awesome Sound

JimH from Carmel, IN on 8/18/2013

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Awesome sound. Much better than the Bose AM10 System they replaced.

Pros:

Cons:

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2 of 2 found this helpful

Disappointed

Polk Lover from Missouri on 2/14/2013

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I have been a long time loyal Polk follower and have always been pleased with them, so this is very hard to write. When doing a recent kitchen remodel, I decided to replace the old 'builder grade' 6 1/2" ceiling speakers we had with these Polks. My hope was that I would be so blown away with them that I would replace all of the remaining speakers in the rest of our rooms for our whole house audio system (10 additional speakers). First of all, these were slightly smaller than the previous 6 1/2" speakers so the tabs wouldn't catch. I was able to fabricate a spacer ring to make them work (this may not be any fault of Polk, but do measure your cutout first if replacing existing speakers.) Next, these Polks are DEEP. Yes, I read the specs before ordering and new the dimensions, but I did have to make some accommodations that 'normal' flat-lying ceiling speakers wouldn't have to have. After spending an entire afternoon installing them, I was severely disappointed in the sound. I drive the whole house audio with a high end Denon so I don't believe that the source is the problem. We don't crank the music; we just enjoy nice background music. The 10 year old builder-grade speakers sounded better. They are definitely not worth the $ to finish out the house.

Pros: They do look nice!

Cons: Sound is poor. Deep installation depth. Expensive.

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13 of 24 found this helpful

Polk Audio 70-RT

Brian T from Easthampton ma on 3/21/2012

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Sounds great for the front LF CTR RF surround .

Pros: Clean look.

Cons:

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2 of 5 found this helpful

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More details on the Polk Audio 70-RT

Stacey B.

Features & specs

Features
Quantity in Package Single
Tweeter Dome
Aimable Tweeter No
Woofer Composition Polypropylene
Woofer Surround Rubber
Moisture-resistant No
Connector Type Spring posts
Bi-Amp Inputs No
Built-in Back-box No
Specs
Tweeter Size 0.75
Midrange Size 2.5
Woofer Size 5 x 7
Cutout Size 6.5
Power Range (Watts) 10-125
Sensitivity 90 dB
Impedance (Ohms) 8
Frequency Response 48-25kHz
Parts Warranty Lifetime
Labor Warranty Lifetime

Product Research

Vanishing Series In-Ceiling Loudspeakers: The Polk Audio Vanishing Series 70-RT is a high performance in-ceiling loudspeaker designed to bring high-quality music to any room or transitional space in your home. It's Polk Audio's smallest, most "invisible" full-range in-ceiling speaker. The Polk Audio 70-RT's lightweight polypropylene cone & sensitive silk dome tweeter can be angled for superior off-axis performance. The innovative addition of the woofer driver behind the main speaker adds depth & dynamics to this compact in-ceiling speaker. The in-ceiling speaker's Reflective Room Compensation Switch digitally compensates for "reflective" rooms, giving you placement flexibility.

Driver Technology
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.

Full-Range 3-Way Driver Array: The Vanishing Series 70-RT in-ceiling loudspeaker employs a new innovative patent-pending design from Polk that's like having a full-range, full-size speaker in a small inset lighting fixture. To do this, Polk designed a deep well and mounted a 'Cassini Oval' woofer above & behind the main driver array. By adding a woofer for low frequency response, the midrange & tweeter is freed up to provide more efficient detail. This innovative deep diagonal positioning allows the 70-RT cutout to be just 6.5" in diameter. This full-range 3-way driver array results in the kind of broad coverage and big performance usually achieved only with bigger box speakers. The 70-RT in-ceiling loudspeaker features the following three drivers.

  • Tweeter: One 0.75" Dynamic Balance silk/polymer dome tweeter
  • Midrange: One 2.5" Dynamic Balance mineral filled polypropylene cone.
  • Woofer: One 5"x7"  Dynamic Balance 'Cassini Oval' mineral filled polypropylene woofer.

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 (3,500-6,000Hz) where room acoustics most often interfere with performance. The switch has two settings:

  • Reflective 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 "Reflective" 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 RT in-ceiling loudspeakers have been timbre-matched with Polk's RTi Series loudspeakers. Timbre-matching with the same internal components, and the same lightweight polymer composite cone material, insures utterly 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 34Hz to 27kHz, and the -3dB frequency response is 48 to 25kHz.

Enclosure Design

Dual Bandpass Ports: Bandpass Ports are the way to go when you want high efficiency in small enclosures. The Vanishing Series in-ceiling speaker employs dual Bandpass Bass Ports, smoothly funneling the angled woofer's detailed low-frequencies down around the midrange and tweeter array. The port design eliminates "chuffing", so the small, practically invisible in-ceiling speakers achieve superior full-range blending and broad coverage with surprisingly deep bass.

15° Angled Baffle: A 15° angled baffle allows you to direct the mids & highs for the particular application; simply by rotate the speaker in the desired directions and tighten down the rotating cams.

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 70-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 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 four rotating cams to hold the speaker securely to the ceiling.

Note: There is an eyebolt on the back of the speaker that can be used for an extra measure of installations security.

Installation: The 70-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 (107PB50, sold separately) are available for new-build or open-ceiling retro-fitting.

Dimensions:

In-Ceiling Dimensions Model # 70-RT
Overall Dimensions (with grille) Diameter = 8.125"
Depth = 8.625"
Cutout Dimensions Diameter = 6.5"
Total Mounting Depth Depth = 8.5"
Mounting Depth (using 1/2 drywall) Depth = 8"

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
It was recommended by your Tech experts for surround sound ceiling mount front speakers [ jed  Sep 11, 2018 ]
A
Sales reps recommendatio [ jonathan  Nov 04, 2017 ]
A
Fit unique installation application better than any other speaker I could find. Sale price. Polk Quality. [ Carlos  Apr 27, 2017 ]
A
Sale and reveiws [ Jeffrey  Apr 25, 2017 ]
A
have a Denon ATMOS receiver and want to take advantage for movie watching. Have had great experience with Polk through the years. [ Thomas  Apr 23, 2017 ]
A
I researched many speakers, and these for money will give me the best bang for the buck. The 5 X 7 woofers offer a better, tighter bass response than most 6.5 inch speakers I have heard. I have used Polk in several other houses and have always had great results. [ Brian  Mar 18, 2017 ]
A
I like the sound of the Polk speakers I have installed and I wanted a bit more power than the smaller ceiling speakers. [ Paul  Nov 30, 2016 ]
A
open floor plan in new house so had to go with in ceiling surrounds [ Jeffery  Aug 24, 2016 ]
A
They were on sale [ HECTOR  Aug 10, 2016 ]
A
combination of price point, form factor, quality and reviews [ Kent  Jul 03, 2016 ]
SHOW MORESHOW LESS

3 questions already asked

Q
I have an onkyo AV receiver HT-R550 that I purchased from crutchfield a few years back now and is still running real good. I would like to add ceiling speakers to the system for house music that I can either listen to or rock to. The house isn't huge so I was thinking 1 speaker per room which would position the speakers no more then 20 feet apart from each other. The other thing I would like to do is add a outside speaker to total 4 for the "b" side of the stereo system. Will these polk 70-RT's work well in this configuration?
[ Chris  Dec 17, 2017 ]
1 answer
A
Actually, no; they would not. For single speaker mounts, it's best to use "stereo input" speakers so you'll still get both the left & right channels of audio from the single mounting location. For multi-room distributed audio systems, I highly recommend contacting the Crutchfield A/V Design Group: https://www.crutchfield.com/Institutional/diy.aspx This specially trained group of advisors can help design your multi-room system and recommend the specific components and cabling you'll need to get the performance and capabilities you require in each location.
[ Ryan  Dec 27, 2017 ]  Staff
Q
Do these aim straight down or at a little bit of an angle...in the picture (speaking in ceiling) it looks like the woofer and tweeter have a little bit of an angle?
[ Brownie  Sep 17, 2015 ]
5 answers
A
Yes, these can be slightly angled.
[ Riley  Sep 19, 2015 ]
A
Yes these do aim straight down - there is an angle to the main driver but it is funneled down a tube and projects the sound evenly out of the front of the speaker with the midrange and tweeter - the speaker is well balanced and sounds great. I would suggest you download the user manual and check out the line diagrams on page 4 - it will show you how the speaker is configured.
[ Christopher  Sep 18, 2015 ]
A
They are placed angular behind the face plate aiming down. If you are planning for front three then voice is modular and perfect as per placement. But if placed one or two odd in corners then you would definitely hear better facing down
[ PANKAJ  Sep 18, 2015 ]
A
They have a little bit of an angle.
[ Nathan  Sep 18, 2015 ]
A
They aim straight down once installed. The electronics and rear housing do sit on an angle. They work and sound great in my 5.2.4 Atmos setup.
[ Mark  Sep 18, 2015 ]

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Polk Audio 90-RT
in-ceiling speaker
In stock
9 reviews

$349.99 -$100.00 Price break

$249.99 each
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Bigger speakers for fuller sound

The Polk Audio 90-RT offers these features:
  • 3-1/4" midrange
  • 6" x 9" woofer
  • frequency response: 30-27,000 Hz (-3dB)
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