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


In-Wall Reference Line Source Speaker

Choose Your Finish


Free delivery & 60 day free returns*



From dual 6.5" cast basket drivers


From a pair of 6.5" pressure-coupled
low bass radiators

Simple and

Easy installation in new or
existing construction

Invisible Sound, Uncompromised

Clear Highs and
Deeper Lows

With its combination of aluminum dome tweeter, dual midrange/woofer and dual bass radiators in a low-profile, flush-mount design, the RLS II delivers breathtaking, reference- quality audio. It provides thrilling sound with rich bass, stunning detail, and theater-reference volume levels that rival the best freestanding speakers without the clutter.

Reference-quality Drivers & Radiators
Flagship Loudspeaker Performance

Ultimate In-Wall series speakers are designed with the same driver technologies as our flagship floorstanding speakers, enabling freestanding speaker-level performance from within your ceiling and walls.

1" Aluminum Dome Tweeter

The RLSII 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.

Installation Flexibility

Keep It Simple

Whether new or existing construction, walls or ceilings, residential or commercial, UIW Reference Series loudspeakers feature simple, secure installations. From metal pivoting lock arms to paintable grilles and frames to fully sealed enclosures, Definitive Technology engineers designed speakers that put installation simplicity on equal footing with sound quality.

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 RLSII, you’ll hear loud, accurate, uncolored midrange and tight, powerful bass with no buzzing or sound leakage into walls and ceilings.