HK AudioPortable Sub 115A - Active Subwoofer | 15-inch, 1200W Peak, Birch Plywood

1200 watts of peak power from a 15-inch woofer in a birch plywood cabinet—the HK AudioPortable Sub 115A delivers low-end authority that belies its portable form factor. This active subwoofer is built for mobile DJs, bands, and installers who demand serious bass reinforcement without the bulk.

Overview

The PS115A (as it's known in some markets) is a self-powered subwoofer engineered for clarity and punch. Its Class D amplifier provides 600 watts RMS, with 1200 watts peak, driving a high-excursion 15-inch driver. The frequency response extends down to 45 Hz, and with a maximum SPL of 128 dB (half space), it can fill medium to large venues with tight, controlled bass.

What stands out

• High-output 15-inch woofer with 1200W peak power for impactful low end.
• Integrated DSP with two presets (Flat and Boost) for quick tonal shaping.
• Switchable crossover at 110 Hz or 130 Hz for seamless integration with top speakers.
• Rugged birch plywood enclosure with black acrylic enamel finish and metal grille.
• Flexible connectivity: 2 combo XLR/TRS inputs, 2 XLR thru outputs, and 2 XLR mid/high outputs.
• M20 pole mount for easy deployment with satellite speakers.

Technical details

• Speaker type: Active subwoofer
• Woofer size: 15-inch
• Amplifier type: Class D
• Peak power output: 1200 W
• RMS power output: 600 W
• Frequency response (-10 dB): 45 Hz – X-over
• Max SPL (half space): 128 dB
• Inputs: 2x XLR/TRS Combo (balanced)
• Outputs: 2x XLR Thru (balanced), 2x XLR Mid/High Out (balanced)
• Crossover frequency: 110 Hz / 130 Hz (switchable)
• Enclosure material: Birch plywood
• Grille: Metal grille with black acoustic foam
• Pole mount: M20
• Handles: 2x integrated handles
• Protection circuits: RMS limiter, subsonic filter, DC, over-temperature, over-current
• DSP functions: Integrated DSP controller with 2 presets (Flat, Boost)
• Power supply: 100-240 V AC, 50/60 Hz
• Finish: Black acrylic enamel

Our verdict

For professionals who need deep, articulate bass in a portable package, the HK AudioPortable Sub 115A is a formidable choice. Its robust build, powerful amplifier, and flexible DSP make it a reliable foundation for any live sound setup.