HK Audio LINEAR 5 MKII 115 Sub A
By HK Audio
The LINEAR 5 MK2 115 Sub A is a compact, high‑performance active bass‑reflex subwoofer designed to deliver punchy, defined low‑frequency reinforcement for professional sound systems. Its 15‑inch woofer provides tight, controlled bass that extends into the lowest registers, forming a solid foundation for LINEAR 5 MK2 full‑range tops. With selectable cardioid presets, stereo preamplifiers for easy 2.1 setups, and a robust birch plywood/MDF enclosure, it is built for demanding live sound, rental, and installation environments.
Key features
| System type | Active bass‑reflex subwoofer |
| Driver | 15" woofer with 3" voice coil |
| Amplifier power | 1200 W Class‑D |
| Max SPL | 130 dB peak |
| Frequency range | 44 Hz – 100 Hz (‑6 dB) |
| DSP functions | 10‑band EQ, LPF, polarity, level, delay, limiter, mute |
| Filter presets | Front, Cardioid 1:1 vertical, Cardioid 1:1 horizontal, Remote |
| Inputs/Outputs | 2× XLR/jack combo, 2× XLR thru, 1× XLR DSP out, Ethernet |
| Cabinet construction | Birch plywood/MDF with steel grille |
| Mounting options | M20 stand flange |
| Dimensions (W×H×D) | 480 × 535 × 675 mm |
| Weight | 32.9 kg |
Overview
The LINEAR 5 MK2 115 Sub A is engineered to deliver dry, precise, and powerful bass performance suitable for a wide range of professional applications. Its compact form factor makes transport and setup easy, while the selectable cardioid modes provide effective rear‑attenuation of low frequencies—ideal for stages, indoor venues, and noise‑sensitive environments. The integrated stereo preamplifiers simplify 2.1 system configurations, allowing quick deployment with full‑range tops. The rugged birch multiplex cabinet and anticorrosive steel grille ensure long‑term durability, even under intensive touring conditions.
Included Accessories
- Power cable
- User documentation
Included Software
- Built‑in DSP with 10‑band EQ and selectable cardioid presets
- Network‑enabled remote control functions (via internal DSP)