Description

The Polk Audio 70-RT Vanishing Series In-Ceiling Speaker is designed to deliver powerful, immersive sound while blending seamlessly into any room. Featuring a 3-way driver array with a 7-inch Dynamic Balance® woofer, a 2.5-inch midrange driver, and a 0.75-inch silk/polymer dome tweeter, this speaker produces crisp highs, well-defined midrange, and deep, distortion-free bass.

The innovative bass venting system ensures smooth airflow, eliminating turbulence and enhancing bass response. The ultra-thin, paintable Sheer-Grille™ magnetically attaches for an almost invisible finish. With a high sensitivity rating of 90 dB and a wide frequency range of 34 Hz – 27,000 Hz, the 70-RT pairs effortlessly with amplifiers, making it ideal for home theaters, surround sound setups, and multi-room audio.

Designed for a seamless fit with Polk’s RTi, Legend, and Reserve series, this in-ceiling speaker supports Dolby Atmos, DTS:X, Auro 3D, and IMAX Enhanced formats. Polk’s patented Rotating Cam system, along with Perfect Fit templates and optional pre-construction brackets, ensures secure, vibration-free installation.

Features:

  • 3-way in-ceiling speaker with premium sound performance
  • 7-inch Dynamic Balance® woofer for deep, impactful bass
  • 2.5-inch midrange driver and 0.75-inch silk/polymer dome tweeter for crisp highs and rich mids
  • Patented bass venting system eliminates distortion for clean, dynamic audio
  • Paintable Wafer-Thin Sheer-Grille™ for a nearly invisible appearance
  • Compatible with Dolby Atmos, DTS:X, Auro 3D, and IMAX Enhanced setups
  • Timbre-matched with Polk’s Legend, Reserve, and RTi series speakers for seamless integration
  • Gold-plated push connectors ensure reliable, high-quality audio transmission
  • Easy installation with Perfect Fit templates and optional PB 50 pre-construction brackets

Specifications:

FeatureSpecification
Brand & Model #Polk Audio 70-RT
OrientationIn-Ceiling
Driver Complement7″ Woofer, 2.5″ Midrange, 0.75″ Tweeter
ShapeRound
Frequency Response34 Hz – 27,000 Hz
Nominal Impedance8 ohms
Sensitivity (1W @ 1m)90 dB
Lower & Upper -3dB Limits48 Hz – 25,000 Hz
Recommended Amp Power10W – 125W
InputsGold-Plated Push Connectors
Grille Dimensions8.13″ Diameter
Speaker Dimensions6.5″ Diameter
Depth8.375″ (21.27 cm)
Accessories IncludedSheer-Grille™ (White, Paintable)
Optional AccessoriesPB 50 Pre-Construction Bracket (Sold Separately)
Carton Dimensions (H x W x D)9.75″ x 11″ x 13″
Weight8.5 lbs (3.86 kg)
WarrantyLifetime Warranty
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