Polk Audio 255C-RT In-wall center channel speaker


Product highlights:

  • frequency response 50-25,000 Hz (-3dB)
  • 1″ swivel-mount silk/polymer dome tweeter
  • dual 5-1/4″ Dynamic Balance® woofers
  • handles up to 150 watts
  • sensitivity 90 dB
  • 8-ohm impedance
  • PowerPort® technology for punchier bass
  • tweeter level switch for custom sound
  • paintable Sheer-Grille™ for stealth installation
  • cutout: 13-1/8″W x 7-5/8″H
  • mounting depth: 3-3/8″
  • warranty: lifetime



Discreetly anchor the on-screen action with this Polk Audio Vanishing Series RT 255CRT center-channel speaker that offers in-wall mounting for a seamless appearance. Dual woofers, a dome tweeter and PowerPort bass venting deliver lifelike sound.


Handles up to 150W power per channel

For robust and controlled audio that is crisp and clear.

Dual 5.25″ woofers

Feature Dynamic Balance construction with a mineral-composite polypropylene cone and rubber surround for vibrant sound.

One 1″ Dynamic Balance silk/polymer composite dome tweeter

Positioned in a 15° swivel housing for direct high-frequency control, optimal off-axis imaging and flexible placement options.

In-wall mounting

Creates outstanding sound quality in rooms where space is at a premium.

Vanishing reflective room compensation

Lowers the tweeter level to compensate for reflective surfaces to ensure optimal audio quality within the 4-5kHz range.

Vanishing wall-distance toggle switch

Adjusts the crossover to flatten response without sacrificing deep bass response to retain lifelike sound and offer flexible placement options.

PowerPort bass venting

Helps move air smoothly from the port to your listening area to boost low-frequency response for well-blended, booming lows.

Gold-plated spring-loaded posts

Offer simple, secure connectivity.


Magnetically attaches to the speaker and protrudes only 7mm to provide a sleek, seamless appearance. The grille is paintable to let you match your décor.

7.63″ x 13.13″ mounting cutout dimensions

Mounting depth: 3.38″ (including 0.5″ drywall).

30Hz – 27kHz frequency response

For faithful sound reproduction.

8 ohms impedance

Conducts power through the speaker.

What’s Included

  • Vanishing Series RT 5.25″ In-Wall Center-Channel Speaker


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