Definitive Technology UIW RLS III in-wall Speaker

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Key Features:

  • Single reference in-ceiling/in-wall surround speaker
  • Equipped with two 4.5-inch bass/mid drivers and two 4.5-inch planar pressure-coupled low bass radiators
  • Frequency response: 26Hz – 30kHz
  • Equipped with two 1-inch pure aluminum dome tweeters
  • Outer Flange Size: 7″ W x 25″ H
  • Cut-Out Size: 5-7/8″ W x 3-7/8″ D x 23-1/4″ H
  • Depth from Flange (including drywall thickness): 3-7/8″
  • Weight: 16 lbs.


Download Full Technical Specification

Price Per Pair



Definitive Technology UIW RLS III In-Wall Reference Loudspeaker is an enclosed full range loudspeaker engineered for flush mount in-wall installation. It features a non-resonant sealed medite (a dense wood product) enclosure to deliver the tight, detailed bass and uncolored midrange of audiophile free-standing speakers in every installation. The performance of open back built-in speakers will vary depending on the nature of the wall/ceiling cavity behind the speaker. But Definitive Reference speakers with integrated enclosures sound superb every time. Rotating dogleg clamps make the RLS III easy to install in either new or existing construction and provide secure, non-resonant mounting for ultimate audiophile performance free of vibrations and buzzes.

The enclosure houses a line source array composed of two high definition bass/mid drivers with cast baskets for natural midrange, surrounding a pure aluminum dome tweeter for silky smooth high frequency response, plus two pressure-driven Low Bass radiators for deep powerful low frequency extension.

Use the RLS III as a main Left, Right, Center or Surround Loudspeaker in a “stealth” high performance home theater or multichannel music system. The RLS III is capable of extraordinary sonic performance, comparable to that of even the finest freestanding loudspeakers, yet it remains hidden within your walls and takes up no floor space! Add a Definitive Technology subwoofer, such as one of our IWSubs, for the addition of even more high impact perfectly blended deep bass response.

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Definitive Technology

Technical Specification

Download Full Technical Specification


Technical Specifications

  • Mounting Dimensions
  • Outer Flange Size: 7″ W x 25″ H
  • Cut-Out Size: 5-7/8″ W x 3-7/8″ D x 23-1/4″ H
  • Depth from Flange (including drywall thickness): 3-7/8″
  • Frequency Response: 24 Hz – 30 kHz
  • Drivers:
  • – Two 5-1/4″ bass/mid drivers
  • – Two 5-1/4″ pressure-driven bass radiators
  • – One 1″ pure aluminum dome tweeter
  • Recommended Amplification: 10 – 325 watts per channel
  • Nominal Impedance: Compatible with 4 – 8 ohms
  • Weight: 16 lbs.


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