K-Array Rumble KU315W – White Ultra-Slim Passive Subwoofer

Product Overview

The K-Array Rumble KU315W is a white ultra-slim passive subwoofer for architectural AV installations where low-frequency hardware must vanish into light interiors and exteriors. Only 250 mm (9.8 in) deep, this low-profile installation subwoofer combines a 15-inch neodymium woofer with two 15-inch passive radiators to produce 137 dB peak SPL and 2000 W rated power at 4 ohms — the most powerful passive model in the Rumble series. Water-resistant, marine-certified construction makes it equally at home as a weather-resistant outdoor subwoofer on terraces, courtyards, and waterfront properties. Prefer dark hardware? The black KU315 version is also available.

Product Description

White walls, light stone, and bright contemporary architecture dominate modern hospitality, worship, and corporate design — and the KU315W's factory white finish lets a high-output subwoofer mount flush against those surfaces without drawing the eye, with the KU315X variant offering custom RAL colors for exact matching. Acoustically the cabinet avoids reflex ports entirely: two 15-inch passive radiators flank the active 15-inch neodymium transducer, keeping cone excursion linear with minimal residual noise inside a sealed enclosure just 250 mm deep. The slim 1230 x 450 mm profile mounts along walls, under stages, or within architectural features that conventional cabinets cannot occupy. Water-resistant polyurea-coated birch plywood construction is certified for marine applications, so a single white cabinet specification serves interior auditoriums and exposed exterior installations alike. A SpeakON NL4 connector (1+/1-) accepts signal from external amplification, and K-Array Kommander amplifiers provide dedicated KU315 presets that balance the subwoofer against any mid-high speaker in the K-Array catalog — including white Kayman and Kobra columns for a fully color-matched system covering 35 Hz to 150 Hz at the low end. For conventional cabinet formats in white, see the Thunder KS2PW I and Thunder KS3PW I.

Key Features

• Architectural White Finish — The factory white cabinet blends into light interiors and exteriors, pairing with white K-Array columns for visually unified systems.
• Ultra-Slim 250 mm Depth — The shallow sealed cabinet mounts against walls, under stages, or within architectural features that standard subwoofers cannot occupy.
• 15-Inch Woofer with Dual 15-Inch Passive Radiators — The radiator-loaded design keeps excursion linear with minimal residual noise, eliminating port turbulence and port-borne weather exposure.
• 2000 W Rated Power at 4 Ohms — The highest-rated passive Rumble subwoofer accepts professional amplification for medium and large-format commercial systems.
• 137 dB Peak SPL — Output capability belies the discreet form factor, covering full-scale venues from a concealed position.
• Weather-Resistant, Marine-Certified Construction — Water-resistant polyurea-coated birch plywood is certified for marine use, supporting outdoor and waterfront deployment.
• Matched Kommander Amplifier Presets — Dedicated DSP presets align the KU315W with any K-Array mid-high speaker for a complete matched installation.
• Custom RAL Available — The KU315X variant finishes box and grille in any RAL color to meet exact architectural specifications.

Typical Applications

• Houses of worship with light interiors needing concealed low-frequency reinforcement
• Auditoriums and performance venues where hardware must match white architecture
• Multi-purpose rooms with limited depth for loudspeaker placement
• Commercial meeting spaces and all-hands rooms requiring discreet full-range audio
• Government spaces and civic venues with strict aesthetic and placement requirements

Technical Specifications

Frequently Asked Questions

Which amplifier should drive the Rumble KU315W?

The KU315W is passive and requires external amplification capable of driving a 4-ohm load at up to 2000 W. K-Array Kommander amplifiers are the recommended choice because they include dedicated KU315 presets that manage crossover and alignment against K-Array mid-high speakers.

Is the white finish suitable for outdoor installation?

Yes. The white finish is applied over water-resistant polyurea-coated birch plywood that is certified for marine applications, so the cabinet handles terraces, courtyards, and waterfront venues when installed per K-Array guidelines.

Why passive radiators instead of ports?

Two 15-inch passive radiators replace reflex openings, keeping transducer excursion linear with minimal residual noise inside a sealed cabinet — enabling the slim 250 mm depth and removing open ports that would admit weather outdoors.

Can the cabinet match a custom interior color?

Yes. Beyond standard white and black, the KU315X variant finishes both box and grille in any RAL color for exact architectural matching.

Which K-Array speakers pair with it?

Kommander presets match the KU315W to any K-Array mid-high element, including white Kayman, Kobra, and Python columns for a color-coordinated system. Browse the K-Array collection for companion products.

What warranty and support are included?

K-Array provides a 5-year manufacturer warranty, and Creation Networks supports the product as an authorized dealer with pre- and post-sale system design assistance.