• 6.5″ (165mm) high-performance shallow subwoofer
• 100Hz LP 12dB/Octave filter network crossover
• Patented SWS design maximizes excursion in shallow mount applications
• Ribbed and inverted poly cone with light-moving mass eliminates break-up distortion
• High roll pressed foam surround with propagating spider allows for extreme excursion
• High temperature voice coil with heat-sink attachment
• Shallow mounting design to reduce mounting depth by over 60%
• Push-type spring-loaded terminals
• Easy-to-use Turn-N-Lock installation mechanism
• Egeless and paintable round and square grilles included
• RK-C6 Rough-In Kit ready
• Protected by multiple U.S. patents

• Power Handling: 150 Watts MAX
• Frequency Response: 30Hz–1kHz
• Voice Coil Diameter: 1″ (25mm)
• Impedance (Ohms): 8
• Sensitivity: 86.7dB 1W/1M
• Overall Diameter: 8.75″ (223mm)
• Cutout Diameter: 7.75″ (196mm)
• Mounting Depth: 3.38″ (85.9mm)
• Weight: 2.46 lb (1.12 kg)

• (1) SUB6 in-wall subwoofer
• (2) Speaker grilles
• (1) Cutout template
• (1) Product manual

The core value proposition of the SUB6 lies in its ability to deliver impressive, deep bass from a shallow enclosure that fits easily within standard wall cavities, effectively disappearing behind a paintable grille. This feature makes the SUB6 an excellent choice for both new construction projects, where audio can be planned from the start, and for retrofitting existing spaces to discreetly enhance audio capabilities.

The SUB6 addresses the challenge of balancing the demand for powerful low frequencies with the desire for invisible technology integration. It provides custom installers and homeowners with an appealing solution that meets both performance and aesthetic goals. The design of the SUB6 acknowledges that modern luxury often resides in what is heard rather than what is seen, offering a way to achieve immersive sound without compromising interior design.

The enabling force behind the SUB6’s remarkable performance-to-size ratio is Earthquake Sound’s patented Shallow Woofer System (SWS) technology. This innovation fundamentally rethinks driver construction to overcome the depth limitations inherent in conventional speaker designs. SWS achieves its shallow profile by ingeniously relocating the flexible suspension components – the cone surround and the spider – to the side of the driver assembly. This allows the motor structure (the magnet and voice coil assembly) to be elevated, significantly reducing the overall mounting depth required for the speaker.

Crucially, this reduction in depth does not come at the expense of performance; rather, the SWS design simultaneously enhances the driver’s excursion capability, allowing it to move more air, which is fundamental to reproducing low-frequency sound waves, especially from a smaller cone area. This patented technology allows the SUB6 to achieve twice the excursion of conventional speakers requiring the same mounting depth. This increased excursion capability, facilitated by a lightweight inverted cone design, is integral to the SWS approach in generating substantial bass from such a compact, shallow unit.

The primary objective of the SUB6 is to integrate flawlessly into standard home construction, becoming an invisible source of powerful bass. The SWS technology is instrumental in achieving this, enabling an exceptionally shallow mounting depth of just 3.38 inches (85.9mm). This minimal depth is crucial because it allows the SUB6 to be installed directly into standard 2×4 stud walls or ceiling joists without requiring costly custom framing, deep cavities, or specialized construction techniques. This compatibility opens up installation possibilities in a vast majority of residential settings.

Streamlining the installation process for custom integrators, the SUB6 features the Turn-N-Lock mounting mechanism. This system is designed for fast, safe, and secure mounting; installers position the subwoofer in the cutout and tighten the integrated dog-ear clamps to firmly secure the unit to the drywall or mounting surface. Connection is also simplified via push-type, spring-loaded speaker terminals that easily accept standard speaker wire.

For new construction projects, the SUB6 is compatible with the RK-C6 Rough-In Kit (sold separately). This kit allows installers to pre-wire and reserve the precise mounting location during the framing stage, before drywall is installed. This significantly simplifies the final installation of the subwoofer after construction is complete, ensuring accurate placement and efficient workflow.

Aesthetically, the SUB6 is designed for maximum versatility and minimal visual impact. It features an edgeless grille design, where the grille frame is extremely thin, allowing it to sit nearly flush with the wall or ceiling surface for a clean, modern appearance. Recognizing diverse design preferences, both a round and a square edgeless grille are included with each SUB6 so you can choose the shape that best complements existing light fixtures, vents, or room geometry. Both grilles come in a standard white finish but are fully paintable, allowing for perfect color matching to the surrounding wall or ceiling, which further enhances their visual blending ability. The grilles are also specified as being rust-resistant, ensuring long-term durability even in potentially humid environments.

Collectively, these features demonstrate a design philosophy that is deeply attuned to the practical needs and workflow of professional custom audio and video installers. The aim was to make the integration of high-performance bass not only possible in standard construction but also efficient, predictable, and aesthetically seamless.

Beyond its discreet integration, the SUB6 is engineered to deliver a significant enhancement to the listening experience. Its specified frequency response extends down to 30Hz to reproduce genuine low frequency information that adds weight, impact, and realism to both music and movie soundtracks. While the response extends up to 1kHz, an integrated 100Hz low-pass crossover ensures that, in practice, the subwoofer focuses its energy on the non-directional bass frequencies below that point. The SWS technology, with its emphasis on high excursion, aims to provide accurate and dynamic bass reproduction, avoiding the compromises often associated with shallow-mount designs.

The SUB6 is ideally suited for applications where traditional boxed subwoofers are impractical or undesirable. In home theater systems, it can effectively reproduce the low frequency effects, adding visceral impact to action scenes without occupying floor space. In multi-room or distributed audio setups, multiple SUB6 units can be strategically placed to provide localized bass reinforcement in different zones, ensuring a full-range listening experience throughout the home. Its primary value lies in scenarios demanding a completely hidden audio solution or where floor space is at a premium.