K-Array Rumble KU212 – Ultra-Slim Stainless Steel Passive Subwoofer (Black)

Product Overview

The K-Array Rumble KU212 passive subwoofer brings full low-frequency reinforcement to commercial AV installations where cabinet depth is the limiting factor. Only 200 mm (7.9 in) deep, this ultra-slim installation subwoofer combines a 12-inch neodymium woofer with a 12-inch passive radiator to produce 130 dB peak SPL and 700 W rated power — the largest stainless steel model in the Rumble series. Its all-steel enclosure also makes it a weather-resistant outdoor subwoofer for exterior commercial deployment. This is the black finish; a white KU212W version is also available.

Product Description

The KU212 solves a recurring integration problem: rooms that need genuine 12-inch bass output but offer no place to hide a conventional ported cabinet. The passive-radiator design replaces reflex ports entirely, sealing the enclosure against dust, sand, and water while keeping cone excursion linear with minimal residual noise. Construction is stainless steel throughout, so the same cabinet serves climate-controlled boardrooms and exposed exterior installations alike; a marine version with additional anti-corrosion treatment is available on request, and the K-KUIP12 cover adds further water protection. The woofer's double voice coil provides selectable 4-ohm or 16-ohm impedance, letting integrators chain up to four units on a single amplifier channel at 4 ohms for distributed audio coverage. K-Array Kommander amplifiers carry a dedicated KU212 preset that aligns the subwoofer against any K-Array mid-high speaker — Kobra and Python columns for larger rooms, or Vyper and Lyzard satellites for low-profile systems. Wall, pole, truss, and flown mounting are supported through the K-WALL2, K-PMOUNT, K-KCLAMP, and K-FLY2B accessory families. For smaller spaces, see the Rumble KU210; for maximum output, the Rumble KU315.

Key Features

• Ultra-Slim 200 mm Cabinet Depth — The shallow 655 x 330 x 200 mm enclosure mounts against walls, under counters, or along architectural lines where conventional 12-inch subwoofers cannot fit.
• 12-Inch Woofer with 12-Inch Passive Radiator — The sealed radiator-loaded design delivers 35 Hz extension while blocking dust, sand, and water that degrade ported cabinets over time.
• 700 W Rated Power and 130 dB Peak SPL — Output capability covers medium and large commercial spaces despite the discreet form factor.
• Selectable 4/16 Ohm Impedance — The double voice coil lets integrators run up to four units per amplifier channel at 4 ohms for efficient distributed audio deployment.
• All-Stainless-Steel Construction — The corrosion-resistant enclosure withstands outdoor weather, with an optional marine version adding further salt-corrosion treatment.
• 4-Pin Euroblock Connectivity — The included Euroblock connector supports clean loop-through wiring in fixed installations.
• Matched Kommander Amplifier Presets — Dedicated DSP presets align the KU212 with any K-Array mid-high speaker for a complete single-vendor system.
• Full Mounting Accessory Ecosystem — K-WALL2 wall brackets, K-PMOUNT pole adapters, K-KCLAMP truss clamps, and K-FLY2B fly bars cover every installation scenario.
• Black, White, or Custom RAL Finishes — Architectural color matching satisfies design-driven specifications.

Typical Applications

• Auditoriums requiring concealed low-frequency reinforcement
• Houses of worship where bass cabinets must blend into architecture
• Multi-purpose rooms and all-hands rooms with full-range program audio
• Commercial meeting spaces with design-driven aesthetic requirements
• Government spaces with strict placement and durability constraints
• Broadcast studios needing accurate low-end in shallow wall zones

Technical Specifications

Frequently Asked Questions

Which amplifier should drive the Rumble KU212?

The KU212 is passive and requires external amplification rated for its 700 W handling. K-Array Kommander amplifiers are the recommended platform because they include a dedicated KU212 preset that manages the 150 Hz crossover and level alignment against K-Array mid-high speakers.

How many KU212 units can share one amplifier channel?

With the double voice coil set to 16 ohms, up to four KU212 cabinets can run in parallel on a single 4-ohm amplifier channel, simplifying distributed audio system wiring in larger commercial deployments.

Which K-Array satellite speakers pair with the KU212?

Kommander presets match the KU212 to any K-Array mid-high element, including Kobra and Python columns for larger venues and Vyper or Lyzard micro speakers for ultra-discreet installations. Browse companion models in the K-Array collection.

Can the KU212 be installed outdoors?

Yes. The all-stainless-steel sealed enclosure resists weather, and a marine version with additional salt-corrosion treatment is available on request. The K-KUIP12 accessory adds further water protection for exposed installations.

What mounting options exist for fixed installation?

K-Array offers the K-WALL2 wall bracket family, K-PMOUNT pole adapter, K-KCLAMP truss clamps, K-JOINT2B joining hardware, and the K-FLY2B fly bar for suspended arrays.

What warranty applies?

K-Array products carry a 5-year manufacturer warranty, supported by Creation Networks as an authorized dealer with commercial AV system design assistance.