REL Acoustics Planar PL-1
Subwoofer

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REL Acoustics Planar PL-1 Subwoofer

Precision in a Smaller Form

Planar PL-1 brings true REL performance to smaller and medium-sized rooms where traditional subwoofers often feel intrusive or impractical. Designed to work in close relationship with the wall behind it, PL-1 uses boundary effect coupling to deliver deep, articulate bass from an ultra-thin form that integrates naturally into the living space without taking it over.

Rel Acoustics Planar PL-1 Subwoofer

Deep Bass, Minimal Space

Flexible performance in an ultra-thin form. Traditional subwoofers demand space and careful placement to perform at their best. PL-1 takes a different approach. By working in close relationship with the wall behind it, Planar uses boundary effect coupling to project bass into the room with surprising depth, clarity, and scale. The result is performance that feels far larger than the product itself. Whether mounted directly on-wall or placed close to the wall using the optional Cart, PL-1 adapts easily to a wide range of spaces and systems. In many ways, it’s become the Swiss Army Knife of REL subwoofers—equally effective in music systems, compact theaters, and spaces where traditional subwoofers simply don’t work.

Designed to Fit Naturally

PL-1 was designed for rooms where space matters as much as performance. Its 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 Gloss Piano Black or Gloss White Lacquer, PL-1 can either blend quietly into the room or sit within it more intentionally. Thoughtful details, including recessed controls, concealed cable management, and optional wood grille upgrades, reinforce a design philosophy where performance and presence are carefully balanced.

To help manage the interaction between the cabinet and the wall, Planar 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.

Rel Acoustics Planar PL-1 Subwoofer

Dual Drivers. Dynamic Performance

PL-1 uses twin long-throw 6.5" drivers specially developed from proven REL driver platforms to deliver fast, dynamic bass from an 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 theater systems to life without overwhelming smaller and medium-sized rooms.

Boundary-Coupled Bass

A specially tuned 10" long-stroke passive radiator fires toward the wall behind Planar, using boundary effect coupling to reinforce and expand low-frequency output. With significant excursion and precise tuning, it transforms the wall into part of the acoustic system producing surprising depth and scale from a cabinet only inches thick.

Rel Acoustics Planar PL-1 Subwoofer

Compact Form. Serious Power

PL-1 is powered by a 300-watt Pure Class D amplifier engineered to deliver fast dynamics and exceptional control from an ultra-thin platform. Proven across thousands of REL subwoofers, this latest generation design combines high current delivery with long-term reliability, allowing PL-1 to produce deep, articulate bass with remarkable composure.

Conservatively rated at 300 watts, the amplifier delivers substantially greater real-world output under demanding conditions. The result is effortless performance for both music and theater systems while remaining efficient, cool-running, and dependable over years of use.

Rel Acoustics Planar PL-1 Subwoofer

Wireless Freedom Included

PL-1 includes Airship Direct wireless technology as a fully integrated part of the design.

No external modules.
No visible cable runs.
No complicated setup.

The receiver is built in, pre-paired, and ready to go allowing you to position PL-1 where it performs best without compromising the space.

Just connect power, place it, and listen.

Rel Acoustics Planar PL-1 Subwoofer

Technical Specifications

Type(2) Front-firing active woofers, (1) Rear-firing passive radiator
Active Driver Size & Material(2) 6.5in. (165mm) FibreAlloy cone, long-throw, steel chassis
Passive Radiator Size & Material10in. (250mm) FibreAlloy cone, steel chassis
Low Frequency Extension-6 dB at 31 Hz, in room
Input ConnectorsHIGH-LEVEL Neutrik SpeakOn, LOW-LEVEL RCA, LFE RCA
Output Connectors-
Power Output300 watts (RMS)
Amplifier TypePure Class D
Wireless CapabilityBuilt-in Wireless
Dual Parametric FilterN/A
FinishGloss Piano Black or Gloss White Lacquer

Protection System

Fully Electronic Set SafeYes
D.C. FaultYes
Output ShortYes
Mains Input Voltage100-240 volts selectable
Fuses2.5A for 230V operation, 5A for 120V operation

Supplied Accessories

Mains LeadYes, 90 degree to permit on wall mounting
Neutrik SpeakonYes. 1.5m cable intended for use with AirShip Direct™ transmitter
InterconnectSupplied Accessories: Power adapter, HIGH-LEVEL cable, X2 RCA cable
User ManualYes

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