Polk Audio RT Series In Ceiling Three-Way Loudspeaker - 70-RT

70-RT

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  • 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
  • Timbre-matched to the RTiA Series

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.

Sheer-Grille™

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.

Timbre-Matching

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.

Accessories
Included Accessories(1) Polk’s Wafer-thin Sheer Grille™ - White, Paintable
Optional Accessories (1) PB 50 - Pre-Construction Bracket - Sold Separate
SHIPPING CARTONS
Carton 19.75" (24.77 cm) h x 11" (27.94 cm) w x 13" (33.02 cm) d - 8.5 lbs (3.86 kg)
Warranty
Lifetime WarrantyYes
IN-CEILING SPEAKER
Depth8.375" (21.27 cm)
Driver Complement(1) 0.75" (1.91 cm) d (Round) Silk/Polymer Tweeter - Tweeter (1) 2.5" (6.35 cm) d (Round) Dynamic Balance Driver with Mineral-Filled Polypropylene Cone - Midrange (1) 7" (17.78 cm) d (Round) Dynamic Balance Sub with Mineral-Filled Polypropylene Cone - Subwoofer
Grille Dimensions8.13" (20.65 cm) diameter
IN-CEILING MOUNT
ShapeRound
Dimensions6.5" (16.51 cm) diameter
INPUTS
Speaker Inputs(1) Pair of Push Connectors - Gold-Plated
AUDIO QUALITY
Total Frequency Response34 Hz → 27,000 Hz
Nominal Impedance8 ohms
Sensitivity (1 watt @ 1 meter)90 dB
Lower and Upper -3dB Limits48 Hz → 25 Hz
EXTERNAL AMPLIFIER
Recommended Amplifier Power Per Channel10 watts → 125 watts

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