HK Audio LINEAR 5 MKII 118 SUB A - 18" active bass-reflex subwoofer with DSP and network control

HK Audio LINEAR 5 MKII 118 Sub A — 18" active bass-reflex subwoofer with DSP and network control

The HK Audio LINEAR 5 MKII 118 Sub A is an 18" bass-reflex powered subwoofer with a 4" voice coil, designed to deliver powerful, dry and controlled bass in professional PA FOH, band reinforcement, club and event applications. It incorporates a 1000 W RMS (2000 W peak) Class D amplifier and a high-performance DSP with EtherCon network control (Windows / macOS) , offering 10-band parametric EQ, filters, delay and cardioid presets selectable from the panel itself. The DSP Out allows the processed signal to be sent to speakers without a network, facilitating 2.1 and mixed systems. Its birch plywood enclosure, 2 mm metal grille with acoustic foam and acrylic enamel finish guarantee durability on tours and rentals.

Main features

• LF Transducer: 1 × 18" with 4" voice coil for maximum punch and extension.
• Power and dynamics: 1000 W RMS / 2000 W peak (Class D) with max SPL 131 dB (peak) .
• Frequency response: 42 Hz – X-over (±3 dB) / 38 Hz – X-over (–10 dB), defined and deep bass.
• Professional DSP with network control: 10-band parametric EQ, HPF/LPF, polarity, level, delay , limiter, and mute ; 48 kHz sampling rate and < 2 ms latency.
• Built-in filter presets: Front, Cardioid 1:1 vertical, Cardioid 1:1 horizontal, and Remote, selectable on the panel.
• Versatile connectivity: 2 × XLR/TRS combo (In), 2 × XLR (Thru), 1 × XLR ( DSP Out ) and EtherCon RJ45 In/Thru for control and monitoring.
• Simple 2.1 workflow : integrated stereo preamp and processed output for DSP-free tops.
• Touring-grade construction: multi-ply birch enclosure, 2 MultiGrip handles , M20 pole flange and durable black finish.

Product benefits

• Bass with control and range: powerful punch with the ability to configure cardioid arrays without complex measurement.
• Quick integration: ready-made presets, DSP Out for routing processed signals, and centralized remote control via network.
• Live reliability: protection through limiters and electronics optimized for intensive use.
• True versatility: from clubs and bars to medium-sized stages, as a single sub or in multiple stacks.

Use cases

• FOH for live bands, DJs and mobile discos with high SPL demands.
• Bass reinforcement in clubs, venues, and corporate events.
• Cardioid stage configurations with rear spill control.

Frequently Asked Questions

• Does it have digital audio outputs? The subwoofer offers analog inputs/outputs (In/Thru and DSP-processed Out ). Control is digital via EtherCon (it does not carry digital audio).
• How do you create a cardioid array? Select the Cardioid 1:1 Vertical or 1:1 Horizontal preset from the panel and stack/place the subs according to the chosen mode.
• Can I control multiple subs at once? Yes, using the HK Audio DSP CONTROL software (Windows/macOS) connected via an EtherCon network.

Description for projects

18" active bass-reflex subwoofer (4" voice coil); 1000 W RMS / 2000 W peak; max. SPL 131 dB (peak); response 42 Hz–X-over (±3 dB) / 38 Hz–X-over (–10 dB); DSP 48 kHz (<2 ms) with 10-band EQ, HPF/LPF, polarity, level, delay , limiter, mute ; presets Front, Cardioid 1:1 vertical, Cardioid 1:1 horizontal, Remote; 2 × XLR/TRS In, 2 × XLR Thru, 1 × XLR DSP Out; EtherCon RJ45 In/Thru; M20 flange; 55 × 56 × 68.5 cm; 41.6 kg; birch enclosure with 2 mm grille and acoustic foam; black finish.