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Whether it's high-impact home theater or smooth stereo music performance you're after, Polk's tower speakers deliver. The RTi8 sports Polk's latest-generation Dynamic Balance® drivers for smooth, wide-open response with extremely low distortion — a redesigned 1" silk/polymer dome tweeter provides stellar treble extension, and dual 6-1/2" woofers dish out full, satisfying mids and lows. Add the handsome real wood veneer, and you've got yourself a pair of great-sounding towers that look great, too.

The RTi8 bolsters the bass with Polk's unique Power Port technology; it delivers lifelike bass that you can feel as well as hear. Plus, Polk's ARC (Acoustic Resonance Control) port technology ensures rich, natural mids. Other details include two sets of gold-plated 5-way binding posts for biamping or biwiring and anti-diffraction grilles for a large, open, three-dimensional soundstage with pinpoint-accurate stereo imaging. Adjustable spikes provide stability on both carpeted and hardwood floors.

Recommended center channel speaker: Polk CSi5.
Recommended surround speakers: Polk RTi6 or Polk FXi5.

Product Highlights:

  • video-shielded
  • bass-reflex design
  • frequency response 40-26,000 Hz (-3dB)
  • 8-ohm impedance
  • sensitivity 90 dB
  • handles up to 250 watts
  • dual 5-way binding post terminals
  • real wood veneer
  • 11"W x 41-5/8"H x 15-9/16"D (with stabilizing base)
  • warranty: 5 years
  • Our 60-day money-back guarantee

Floor-standing speakers — still standing tall

Sure, floor-standing tower speakers buck the industry trend toward smaller, visually inconspicuous speakers, but they're hard to beat if great sound is your primary goal. Tower speakers produce powerful sound with excellent bass, making them a great choice for serious music lovers and for folks who want high-impact home theater.

Polk Audio RTi8 Reviews

Average Customer Review:

1 Review

Very FULL sound

Written by: bjcjumper from VA on April 13, 2006

So I decided to upgrade my Sony SS-V130 cubes and SA-W303 sub to some bigger/better speakers. After many hours of research Polk stood out as the speaker of choice. Here's was the planned setup.Front 2: RTi8's; Center: CSi5; Rear 2: RTi4's; and Sub: PSW12. After installing the two RTi8's, I have to say they are serious speakers! They push out a lot of sound, and have an undeniable presence in the room (size wise). The cherry wood is amazingly beautiful and adds that extra "high quality" look to the speakers. I've already said they produce a LOT of sound, but, after 25 days (no joke) of trying to tweak my Yamaha HTR-5890 receiver to make theses speakers sound just perfect, I had to give up. They produce perfect midrange, mediocre to poor bass, and slightly above average highs. These are perfect speakers for anyone looking to have a full "all-around" sound, but plan to buy a subwoofer. What I learned was that my ears like the cube sound much better (Bose type speakers) that's to say I like the highs and upper mids coming from one speaker and the mid-lows and bass coming from another speaker. Again, these are great for giving you the feeling of "all-in-one" sound, but to me that all-in-one sound seemed a little muffled no matter how I tweaked my system. I wanted to hear clearer sounds with crisp distinction between the sounds. If your like me and upgrading from a cube system, be sure to listen to these A LOT before buying them, or make sure to keep your boxes for the 30 day return policy Crutchfield offers (which I did and they were super friendly about it). By the way I used these only for home theater, and if you get them, bi-wire, it makes them sound extra sweet!



Hands-on research

What's in the box?

Download owner's manual

  • Two separate boxes-each box contains:
  • 1 Cherry floor-standing speaker
  • 2 Stabilizer bars
  • 4 Spike feet
  • 4 Machine screws
  • Owner's Manual
  • Online registration sheet

Features and Specs

Enclosure Bass Reflex
Finish Wood veneer
Color Cherry
Tweeter Dome
Tweeter Size (inches) 1
Midrange Size (inches) N/A
Woofer Size (inches) 6.5
Woofer Composition Polymer composite
Woofer Surround Butyl rubber
Built-in Powered Sub No
Video-Shielded Yes
Connector Type Dual 5-way post
Bi-amp Inputs Yes
Parts Warranty 5 Years
Labor Warranty 5 Years
Power Range 20-250
Frequency Response 40-26k Hz
Sensitivity 90 dB
Impedance (Ohms) 8
Amplifier Power ---
Height (inches) ---
Width (inches) ---
Depth (inches) ---
Weight ---

Product Research



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 two 6-1/2" polymer composite woofers 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. The tweeters use a heat sink on the Neodymium magnet for superior heat dissipation, power handling and reliability.

Acoustically Inert Cabinets: Each speaker cabinet features all-MDF construction with extensive internal bracings that virtually eliminate sound-muddying resonance.

Power Port Venting System: Each speaker has a rear-firing Power Port venting system built into its back 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: The 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.

Magnetically Shielded: Each speaker is magnetically shielded, allowing you to place it near your television without distorting the picture.

Adjustable Leveling Spike Feet: The adjustable leveling spike feet mounted on the stabilizer bars provide stability on any type of flooring.


Frequency Response Note: The overall frequency response is 30Hz-27kHz and the -3dB frequency response is 40-26kHz.

Dimension Note: The main body of the speaker is 7.767" wide. The stabilizer bars extend beyond each side of the speaker, giving the speaker an overall width of 10.953".

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.