Polk 70RT In Ceiling 3 Way Loudspeaker

Polk 70RT In Ceiling 3 Way Loudspeaker
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You will receive: 1 Polk 70RT In Ceiling 3 Way Loudspeaker


Vanishing Series
Practically Invisible In-Ceiling & In-Wall Loudspeakers. The new Vanishing Series speakers do just as their name implies: they almost completely disappear, leaving only you and the high performance audio you want, and never interfering with your room design. Use the Vanishing Series loudspeakers to complete a system of traditional loudspeakers (by adding inconspicuous surround channels). Use them all around to design a complete, practically invisible sound system. Use Vanishing loudspeakers to unobtrusively bring music to every room or area of your house.
And because we know that all rooms are different, we’ve included superior audiophile sound customization features so you can easily optimize your Vanishing Series speakers to any installation location. Not only can you aim Vanishing Series tweeters to insure superior off-axis imaging, but you can use the reflective room (tweeter) compensation switch to compensate for reflective rooms, and the wall distance setting toggle to optimize for placement close to walls or corners. Installing virtually-flush in-ceiling & in-wall speakers has never been easier, whether you’re a pro or a confident DIY-er. In existing walls, take advantage of one-cut drop-in installation and the security of our rotating cam stabilizing system. Our precision-engineered design lets you get professional results with no drywall repair.
Practically Invisible Grilles & Minimal Flanges New design! Vanishing Series in-ceiling & in-wall speakers feature our exclusive wafer-thin Sheer-Grille, a magnetically-secured grille. Sheer-Grilles have nearly transparent, ultra-small perfs, and are acoustically inert, for dynamic, unimpeded sound and more uniform coverage, even in larger rooms. Vanishing Series speakers are virtually indistinguishable from their surroundings. (Vanishing Series grilles are metal, and not recommended for installation in high-moisture locations. Choose Polk TCi Series in-ceiling & in-wall loudspeakers.)
High Performance Tweeters Superior imaging and clear, lifelike detail is revealed by superior tweeter technology. Vanishing Series tweeters feature 15° swivel housings, for more direct high frequency control, excellent off-axis imaging and more placement flexibility. The reflective room (tweeter) compensation switch (see individual model specs) can digitally compensate for reflective rooms without hindering high performance.
Patented PowerPort Bass Venting Speakers built into your walls can struggle to reproduce detailed deep bass because they lack enclosures tuned to support those frequencies. Vanishing Series speakers feature our patented PowerPort bass venting system to alleviate “chuffing” resonances, and roll out deep, musical bass that blends smoothly, for more efficient high performance bass than ever before.
Exclusive Audio Customization Controls Easily accessible controls allow you to make advanced audio tweaks to optimize your sound for any installation. Use the reflective room (tweeter) compensation switch to digitally compensate for harsh reflective surfaces. It doesn’t merely reduce high frequencies; it actually allows you to “notch out” a specific area of the spectrum (3500-6000Hz) where room acoustics most often interfere with performance. The wall distance setting toggle allows for maximum placement flexibility with no loss of performance by tailoring the frequency response to compensate for proximity to corners or adjacent walls. This sophisticated technology also allows you to restrict specific midbass frequencies (80-150Hz) that can produce “boominess” in close quarters, while leaving deep musical bass response intact. F/X® surround speaker models feature an additional imaging toggle, giving you more placement flexibility behind or to the sides of your listening position.


  • Broad coverage and dynamic, full-range performance from an extra deep well design with a Cassini oval woofer.
  • Painted to match your décor, Vanishing Series built-in speakers blend in perfectly with their surroundings.
  • Innovative features and patented Polk Audio technology in a discrete, easy-to-install package.

Surprisingly Big Sound

The Vanishing® Series 70-RT features a unique 3-way driver array that produces big, full-range performance from a deceptively small in-ceiling speaker.


The unique, wafer-thin grille is magnetically secured to deliver nearly transparent, ultra-small perfs and dynamic, unimpeded sound.

Power Port

Patented bass venting design smoothly transitions air flow, eliminating turbulence and distortion, for deeper, more efficient bass impact.


Compatible with Polk Audio RTi speakers for seamless blending between traditional and built-in speaker systems.

Reflective Room Compensation

Lower tweeter levels offset reflective surfaces, cutting the level in the exact 4-5kHz band where reflectivity destroys sound quality.

Dual Band-Pass Bass Ports

Smooth funneling for low frequencies around the driver array eliminates “chuffing” for full-range blending, broad coverage and deep bass.

Simple Setup

Perfect Fit templates, a precision flange, (available) pre-construction brackets and the patented Rotating Cam system ensure secure, vibration-free installation.Specifications:

  • Total Pieces: 1
  • Optional Accessories: (1) Pre-Construction Bracket PB SC50
  • Qty Included: 1
  • Availability: US
  • Width: 8.375" (21.27 cm)
  • Depth: 8.375" (21.27 cm)
  • Tweeter: (1) 0.75" (1.91 cm) d (Round) Silk/Polymer Tweeter
  • Midrange: (1) 2.5" (6.35 cm) d (Round) Dynamic Balance Driver with Mineral-Filled Polypropylene Cone
  • Subwoofer: (1) 7" (17.78 cm) d (Round) Dynamic Balance Sub with Mineral-Filled Polypropylene Cone
  • Grille Dimensions: 8.13" (20.65 cm) diameter
  • Shape: Round
  • Total Frequency Response: 34 Hz → 27 kHz
  • Sensitivity (1 watt @ 1 meter): 90 dB
  • Lower and Upper -3dB Limits: 48 Hz → 25 kHz
  • Speaker Inputs: (1) Pair of Heavy Duty, Spring Loaded - Gold-Plated
  • Recommended Amplifier Power Per Channel: 10 watts → 125 watts


  • UPC: 747192120771
  • EAN: 0747192120771
  • SKU: 70RT