Deliver deep, powerful low-end with the Linear 5 MKII 115 Sub A, a compact powered subwoofer engineered for tight, punchy bass and effortless portability. Built for modern live sound demands, it combines precision performance with a space-saving design, making it the perfect foundation for any professional PA setup. Whether on stage, in clubs, or at events, this sub brings controlled, impactful bass that elevates your entire mix without the bulk.

Features 

• Compact active bass reflex subwoofer designed for powerful, controlled low-frequency performance in professional sound systems.
  
• Delivers punchy, defined bass response that remains tight and accurate even at high output levels.
  
• Reaches deep low-end frequencies while maintaining clarity and precision across the entire bass range.
  
• Capable of achieving up to 130 dB peak SPL for strong, room-filling performance.
  
• Extended frequency range down to 44 Hz ensures deep and impactful bass reproduction.
  
• Integrated cardioid presets allow optimized low-frequency control and flexible system configuration.
  
• Supports advanced setup versatility for professional live sound applications and scalable PA systems.
  
• Stereo preamplifier architecture enables simplified 2.1 system integration and routing.
  
• Engineered as a core foundation for LINEAR 5 MK2 setups with uncompromising output and reliability.
  
• Portable design makes transport and deployment easy without sacrificing performance capability.

Specifications 

Concept
Active Subwoofer

Cabinet Principle
Bass Reflex

Performance
Max SPL Average: 127 dB
Max SPL Peak: 130 dB
Frequency Range -6 dB: 44 Hz – X-over
Frequency Range -10 dB: 40 Hz – X-over

Low Frequency Driver
Driver: 1 x 15" cone speaker
Voice Coil: 3"

Amplifier
Type: Class D
Power Output RMS: 600 W
Power Output Peak: 1200 W
Power Consumption: 1 A / 100–240 V nominal (EN 62368-1)

DSP & Processing
Preamplifier: DSP preamplifier
Sample Rate: 48 kHz
Latency: under 2 ms
DSP Functions: Parametric 10-band EQ with variable filter characteristics, low-pass filter, polarity, level, delay, limiter, mute
Remote Software: HK Audio DSP CONTROL (Windows, Mac OS)
Filter Presets: Front, Cardioid 1:1 vertical, Cardioid 1:1 horizontal, Remote

Connectivity
Analog Input: 2 x XLR/jack combo symm.
Analog Output: 2 x XLR symm.
DSP Output: 1 x XLR symm.
Network Input: 1 x Ethercon RJ45
Network Output: 1 x Ethercon RJ45
Digital Audio Transmission: MILAN

Speaker Protection
Protection System: RMS / Peak Limiter
Maximum Input Level: +20 dBu

Cabinet & Build
Cabinet Material: Hybrid (Birch plywood / MDF)
Cabinet Surface: Acrylic enamel
Color: Jet black (RAL 9005)
Front Grille: Steel grille with anticorrosive coating and acoustic foam
Carrying Handles: 2 x HK Audio MultiGrip
Pole Mount: 1 x M20

Dimensions & Weight
Weight: 32.9 kg (72.5 lbs)