HK Audio PSUB-115A

A Subwoofer Designed for the HK Audio "PORTABLE SOUND" Ecosystem

The PORTABLE SUB 115 A is part of a series designed to work "naturally" with HK Audio systems intended for mobile performances. The concept is simple: one format, one usage concept, and direct compatibility with the LUNAR, SONAR, and POLAR MK2 ranges. Instead of multiplying settings, you select the appropriate preset and the subwoofer automatically aligns with the chosen speakers, providing a coherent and efficient system foundation.
Within the series, HK Audio offers two complementary approaches: the PORTABLE SUB 115 A for a direct and compact response, and an alternative model more focused on "bass depth." The 115 A is aimed at those who want a solid, clear, and easy-to-control low end while maintaining reasonable size and quick setup.

Who Is It For and What Are Its Uses?

The HK Audio PORTABLE SUB 115 A is designed for musicians, DJs, and service providers/rental companies seeking a subwoofer that is simple to integrate and reliable in real-world conditions. It provides an excellent foundation to reinforce an existing sound system, increase impact on kick drum, bass, synths, or samples, and restore a sense of "size" at events where tops alone quickly reach their low-frequency limits.
Thanks to its stereo preamp oriented towards 2.1 configurations, it fits well into both DJ setups and voice/instrument systems, with a clear connection logic: input, thru, and essential controls within easy reach. For touring gigs, this is precisely what makes the difference: less setup time, fewer uncertainties, and consistent results from one event to another.

Key Features: "Plug & Play" Efficiency, Precise Bass Control

24-bit DSP and Presets: Instant Integration

The heart of the PORTABLE SUB 115 A is its 24-bit DSP, which enables automatic and system-specific adjustment. In practice, the presets dedicated to LUNAR, SONAR, and POLAR MK2 speakers facilitate achieving coherent bass: level, dynamic behavior, and crossover with the tops are designed to work together without a lengthy tuning session.
This digital management also contributes to improved impulse fidelity: the low end remains clearer, more "gripping," and retains a sharper attack. The result: the kick drum stands out with more precision, the bass is more intelligible, and the mix maintains depth even at higher levels.

Powerful Amplification, Fanless Design

With 1,400 W (peak) and up to 131 dB SPL max, the PORTABLE SUB 115 A has the reserves needed to support mobile speakers in demanding contexts. Its fanless design offers a dual advantage: avoiding any noise from a cooling fan while maintaining a performance-oriented architecture. For corporate events, cocktail parties, small stages, or performances where silence between tracks matters, this detail is far from trivial.

Essential Controls to Adapt to the Venue

HK Audio has favored a practical approach: gain control to adjust the level according to the context and source, polarity switch to quickly correct unfavorable interactions with the tops depending on placement, and efficient connectivity with input/thru. All serve a clear goal: letting you focus on the performance, not the technicalities.

Wooden Enclosure, Ergonomic Transport, Refined Aesthetics

The subwoofer features a wooden construction designed for a "drier," better-controlled bass reproduction while remaining roadworthy. The MultiGrip handles ensure safe handling and improve carrying comfort, whether loading, on stage, or during quick setups. Finally, its design matches the aesthetics of the series' speakers, creating a visually cohesive system appreciated in both performances and rentals.
The PORTABLE SUB 115 A is made in Germany and benefits from a 5-year warranty after registration, a reassuring point for regular use and rental fleets seeking a durable solution.

Technical specifications

Category	Installation and services	Transport	2 handles
Type	active subwoofer	Inputs	2 x combo XLR/jack
Insert type	M20	Outputs	link XLR
Peak power	1400 W	Number of inputs	2
Amplification	Active amplified	Color	Black
Bluetooth	No	Power output	700 W
Speaker diameter	15"	Power / type	RMS
DSP	Yes	Weight	32.8 kg
SPL Max / peak	128 dB	Dimensions (mm)	430 x 638 x 565
Speaker structure	MDF

Max SPL	up to 131 dB	Handles	MultiGrip for secure and ergonomic handling
Amplifier power	1,400 W (peak)	Manufacturing	Made in Germany
Design	fanless amplification	Warranty	5 years after registration
Connectivity	input/thru	Series	HK Audio PORTABLE SUB (active models designed to work with LUNAR, SONAR, and POLAR MK2)
Controls	gain control	Model	PORTABLE SUB 115 A (direct and compact approach within the series)
Enclosure	robust wooden construction