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Polk Audio RTi A1 Bookshelf speakers (Black)

Item # 107RTIA1B

Treat yourself to detailed, accurate sound with Polk's compact RTi A1 bookshelf speakers.

Treat yourself to detailed, accurate sound with Polk's compact RTi A1 bookshelf speakers.

5 questions - 10 answers

Item # 107RTIA1B

Shop all Polk Audio Bookshelf Speakers

About the Polk Audio RTi A1

Loren Barstow

Potent bookshelf speakers

Treat yourself to detailed, accurate sound with Polk's compact RTi A1 bookshelf speakers. They feature Polk's exclusive Dynamic Balance® drivers for smooth accurate response. Plus the woofers and tweeters undergo careful laser testing to help identify and eliminate unwanted resonances that can hinder a speaker's performance.

Potent bookshelf speakers

Treat yourself to detailed, accurate sound with Polk's compact RTi A1 bookshelf speakers. They feature Polk's exclusive Dynamic Balance® drivers for smooth accurate response. Plus the woofers and tweeters undergo careful laser testing to help identify and eliminate unwanted resonances that can hinder a speaker's performance.

Thoughtful cabinet design

Cabinet cross-section

The asymmetric cabinet helps fight vibration for clearer sound.

The RTi A1's newly designed asymmetric cabinets help them deliver rich, clear sound by combating vibration and increasing rigidity. You'll enjoy remarkably clean mids and highs for a well-defined soundstage, along with tight bass. Plus, the cabinet's curved edges give the speaker a polished look, enhanced by a real wood veneer finish.

Great for home theater or stereo music setups

The RTi A1s do a great job with stereo music on their own, or you can team them with a powered subwoofer for even better bass. Or use two pairs as your home theater's front and surround speakers for dynamic, detailed movie sound. For larger rooms, the RTi A1s work perfectly as surrounds in combination with RTi tower front speakers.

Recommended center channel speaker: Polk CSi A4.
Recommended surround speakers: Polk RTi A1.

Got wire?

Most speakers don't include any. Learn about choosing and installing speaker wire at the Crutchfield Learning Center.
Shop our selection of speaker wire.


Product highlights:

  • video-shielded
  • bass-reflex (ported) design
  • frequency response 60-26,000 Hz (-3dB)
  • handles 20-125 watts
  • 1" Dynamic Balance silk/polymer tweeter
  • 5-1/4" Dynamic Balance polymer composite woofer
  • PowerPort® technology improves bass response without introducing distortion
  • 8-ohm impedance
  • sensitivity 89 dB
  • 5-way binding post terminals
  • real wood veneer finish
  • 7-3/8"W x 12-1/16"H x 11-11/16"D
  • warranty: 5 years
Priced per pair
  • MFR # AM1175-C

What's in the box:

  • 2 Black bookshelf speakers
  • 2 Self-tapping screws
  • 8 Self-adhesive rubber feet
  • Owner's Manual
  • Template
  • Online registration sheet
  • Polk Audio product brochure

Customer reviews for Polk Audio RTi A1

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5.0 out of 5 stars
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More details on the Polk Audio RTi A1

Stacey B.

Features & specs

Enclosure Bass Reflex
Finish Real wood veneer
Color Black
Tweeter Type Soft-Dome
Tweeter Size (inches) 1
Midrange Size (inches) ---
Woofer Size (inches) 5.25
Woofer Composition Polymer composite
Woofer Surround Butyl rubber
Power Range 20-125
Sensitivity 89 dB
Impedance (Ohms) 8
Frequency Response 60-26k Hz
Connector Type 5-way post
Bi-amp Inputs Yes
Height (inches) 12-1/16
Width (inches) 7-3/8
Depth (inches) 11-11/16
Weight (pounds) 12
Wall-mountable Yes
Bracket Included Keyhole
Recommended Stand Height (inches) 28-36
Parts Warranty 5 Years
Labor Warranty 5 Years
The Polk Audio RTi A1 replaces these items:

Product Research

Driver Technology
Enclosure Design
Mounting Options

Driver Technology

Dynamic Balance: Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response and low distortion.

Polymer Composite Woofers: Each speaker features a 5-1/4" polymer composite woofer for smooth wide-range response with low distortion. For high performance durability, each woofer uses a butyl rubber surround.

Silk/Polymer Tweeters: Each speaker has a 1" silk/polymer dome tweeter that provides clear, detailed highs. Each tweeter features mylar bypass capacitors in the crossovers to extend high frequency response and improve detail and transparency. Each tweeter features low viscosity ferro-fluid cooling with a heat sink on the Neodymium magnet for superior heat dissipation, power handling and reliability.

Frequency Response: The overall frequency response is 50Hz-27kHz and the -3dB frequency response is 60-26kHz.

Enclosure Design

Damped Asymmetric Hex Laminate (DAHLI) Cabinet Design: All-MDF construction with massive asymmetric cabinet bracing ensures a resonance-free enclosure for accurate sound. The asymmetric design is made from a 6-layer laminate with 5 viscous layers to create the optimal shear damping (OSD) system. The elegant styling aside, curved cabinets not only result in a stronger, more rigid and acoustically inert enclosure, but the curved walls also produce less audible coloration from panel resonances.

Power Port Venting System: Each speaker has a forward-firing Power Port venting system built into its front plate for precise deep bass response. This venting system allows air velocity to slow gradually, vastly reducing air turbulence, and delivering greater bass efficiency than conventional ports.

Acoustic Resonance Control (ARC): Internal cabinet resonance can impart a "thick" character to voices. Polk's patented Acoustic Resonance Control port system overcomes this problem. In addition to the Power Port venting system, each speaker has a front-firing port that is tuned to suppress the internal cabinet resonance, resulting in smooth, natural midrange reproduction.

Anti-Diffraction Grilles: The floating anti-diffraction grilles minimize grille diffraction for spacious, 3-dimensional imaging.


Dual 5-Way Binding Posts: Each speaker has two sets of gold-plated 5-way binding posts connected by gold-plated jumpers. Using the dual 5-way binding posts, you can bi-amp or bi-wire the speakers.

Mounting Options

Wall Mounting: The Power Port back plate on each speaker has a keyhole slot, allowing the speaker to be mounted on the wall using the supplied 2-1/2" wood screws.

Magnetically Shielded: The speakers are magnetically shielded, allowing you to place them near your television without distorting the picture.

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Customer Q&A

5 questions already asked

I see a wall-hook on the back of these speakers. Has anyone wall-mounted these speakers using that hook and was there a compromise in bass when doing this?
norman  Nov 25, 2019
4 answers
Being front ported, you dont have to worry about maintaining a distance to the wall.
joseph  Jan 01, 2021
I mounted them from that hook. I don't notice any loss in bass, but I also have a sub. :-)
abdon  Nov 25, 2019
I have not mounted these on wall
arlyn  Nov 25, 2019
I did not wall mount mine , so not sure . Works great on the floor or shelf though
malcolm david  Nov 25, 2019
Just bought these speakers and the discontinued Yamaha RXV 675 7.2 channel online. Can I use a powered subwoofer that was part of a Vizio sound bar to add bass? For now this will be set up as a 2.1 stereo/surround sound configuration. Major upgrade for a newbie.
eric  Mar 15, 2015
1 answer
If the subwoofer has a line input (RCA or Mini) then you should be able to connect it to the receiver. Either directly using the subwoofer level output and line-in or with an adapter from the RCA level output of the receiver to the mini jack in on the subwoofer (again depending on the input). If the subwoofer does not have a line input then it will not work with the receiver.
jeff  Mar 19, 2015 (Staff)
is the 20 to 125 watts RMS value or peak value?
nicholas  Sep 03, 2014
2 answers
I feel it's very much an awesome value. I power these speakers (wall mounted) w onkyo tx-8050. My space is a 900 square foot bottle shop. We run internet radio and play vinyl daily. RTi A1 's sound awesome bass without a sub. For our purposes, perfect. Sometimes we have upwards of 40 ppl in that small space and they still deliver. hope this helps. PC
phillip  Sep 09, 2014
Is RMS or "root mean (average) square value. The rule is that Max or Peak values are are clearly stated in any equipment specs. There is One Peak value not a range of Peak Values. The RTi's are very efficient speakers so they can work well with a low power amp as low a 20 watt in the connected channel. They can work in a high power channel up to 125 watts as well. 125 is the maximum RMS watts recommended for the speakers. It seems these speakers were well tested at different power supplies for a certain time period. I am using then with a Denon AV-E400 185 Max output watts/channel (90 watts RMS/Channel). Sounds great. If 20 t0 125 were peak values, (there can only be ONE peak value) they could'nt hold 90 watts RMS. Hope this can help.
anibal  Sep 05, 2014
raul  Dec 11, 2017
2 answers
I have connected it to my Denon AV Receiver
brian  Dec 11, 2017
I love these speakers. I use them in a music room that is 25x25. I added a powered sub for more off a low end punch. They are well built quality multi tome speakers. Crisp, clean.
robert  Dec 11, 2017

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