Definitive Technology UIW RLS III

Placement is hardly an issue with the RLS III full-range loudspeaker. Its extraordinary performance is perfect for left, right, center, or surround applications in home theaters or multichannel music systems.

  • Detailed Presence
  • Deep Bass
  • Simple and Secure


1″ Aluminum Dome Tweeter

The RLSIII aluminum dome tweeter delivers a clear, precise high frequency response. Their ultralight, rigid construction enables them to play significantly higher frequencies than we can hear, providing effortless, distortion-free highs within and beyond the audible range.


Dynamic Midrange/Woofer

Most in-wall speakers lack the larger driver area of floorstanding speakers. The RLSIII’s 5.25″ midrange/woofer drivers match butyl rubber surrounds with rigid polypropylene cones in cast baskets to provide a much greater cone excursion than other comparably-sized drivers. The result is superior midrange and bass performance, wrapped in a compact, stealthy package.


Passive Bass Radiators

Each RLSIII includes twin 5.25″ passive bass radiators. Passive radiators create more bass than comparably sized sealed or ported designs. The extra surface area moves more air, resulting in bigger and deeper low end that works beautifully on its own or mates seamlessly with subwoofers at a variety of crossover points.


Fully Enclosed for powerful sound where you want it

UIW Reference Series loudspeakers are fully enclosed and sealed with dense, acoustically inert, anti-resonant, anti-vibration Medite® wood. With the RLSIII, you’ll hear loud, accurate, uncolored midrange and tight, powerful bass with no buzzing or sound leakage into walls and ceilings.

Carton 1 ; Weight241.3 x 762 x 228.6mm (9.5″ x 30″ x 9″) ;
7.26kg (16 lbs)
In-Wall Speaker
Qty Included1
Weight6.58kg (14.5 lbs)
A/V Receiver Crossover SettingsSmall (40Hz)
Audio Inputs
Speaker Inputs1x Pair of Heavy Duty, Spring Loaded – Gold Plated
Total Frequency Response24 Hz → 30,000 Hz
Nominal Impedance8 ohms
Max Sensitivity (1W @ 1m)92dB
Dimensions (W x H)149.4 x 603.3mm (5.88″ x 23.75″)
Clearance Required for Mounting Dogs (add to each side of cutout)22.4mm (0.88″)