REL - Planar PL-1 - Ultra-Thin Subwoofer

REL's breakthrough Planar PL-1 wall-mounting subwoofer for smaller and medium-sized rooms. Dual 6.5" long-throw drivers, 10" boundary-coupled passive radiator, 300W Pure Class D amplifier, built-in Airship Direct wireless, VIMAR vibration isolation and an ultra-thin cabinet for near- or on-wall placement. Available in Black and White, with optional premium wood grille and cart.

Precision in a Smaller Form

Traditional subwoofers often demand significant floor space and careful placement to perform at their best. The REL Planar PL-1 takes a fundamentally different approach. Designed to work in close relationship with the wall behind it, the PL-1 uses boundary effect coupling to produce deep, articulate bass from an ultra-thin form that integrates naturally into smaller and medium-sized rooms.

Whether mounted directly on-wall or placed close to the wall using the optional cart, the PL-1 adapts easily to a wide range of spaces and systems. In many ways, it has become the Swiss Army Knife of REL subwoofers — equally effective in music systems, compact home theatres, unconventional placements, and even specialised applications such as centre-channel bass reinforcement where traditional subwoofers prove difficult to integrate.

Dual Drivers — Dynamic Performance

The PL-1 uses twin long-throw 6.5" drivers specially developed from proven REL driver platforms to deliver fast, dynamic bass from its ultra-thin cabinet. Working together, the dual-driver configuration increases surface area and impact while preserving the speed, articulation and control that define REL performance. The result is deep, engaging bass that brings music and home theatre systems to life without overwhelming smaller and medium-sized rooms.

Boundary-Coupled Bass — 10" Passive Radiator

A specially tuned 10" passive radiator fires toward the wall behind the PL-1, using boundary effect coupling to reinforce and expand low-frequency output. With over 45mm of excursion, the passive radiator works in close relationship with the wall surface to produce surprisingly deep bass and remarkable scale from a cabinet only inches deep. The result is immersive, room-filling performance from a form designed to integrate gracefully into real living spaces — with bass extension reaching -6dB at 31Hz in-room.

300-Watt Pure Class D Amplifier

A 300-watt Pure Class D amplifier powers the PL-1's driver array with the authority and control needed for articulate, dynamic bass reproduction. Class D efficiency means minimal heat generation in an ultra-compact chassis without any compromise to power delivery or sonic performance.

Built-In Airship Direct Wireless

Airship Direct wireless technology is built into the PL-1 as standard — no optional add-on required. This allows the PL-1 to be placed anywhere that makes acoustic sense without the constraint of running a cable from your amplifier or AV receiver. The receiver unit comes pre-installed on the subwoofer, and setup is straightforward.

VIMAR Vibration Isolation

To manage the interaction between the cabinet and the wall surface, the PL-1 incorporates REL's VIMAR (Vibration Isolation Material and Resonance Control) system, integrated into the mounting brackets. VIMAR reduces the transfer of unwanted energy into the wall while preserving the speed and integrity of the bass — the result is cleaner, more controlled low-frequency performance regardless of wall construction.

Designed to Fit Naturally

The PL-1's ultra-thin cabinet, flowing edges and deep lacquer finishes allow it to integrate naturally into smaller and medium-sized living spaces where traditional subwoofers can feel oversized or intrusive. Available in black or white lacquer, it transforms underused wall areas into opportunities for serious low-frequency performance while preserving the openness and flow of the room.

Thoughtful details — recessed controls, concealed cable management, and optional premium wood grille upgrades — reinforce a design philosophy where elegance and functionality exist together naturally.

In the Box

Optional accessories: Planar Cart (for freestanding near-wall placement), Premium Wood Grille

Available Options