HK Audio SONAR 115 SUB D - 15" Active Subwoofer with 24-bit DSP and Cardioid Presets

HK Audio SONAR 115 Sub D — 15" Active Subwoofer with 24-bit DSP and Cardioid Presets

The HK Audio SONAR 115 Sub D is a powered subwoofer designed to authoritatively extend the bass response of SONAR systems and other full-range loudspeakers. It features a 15" bass-reflex enclosure and a 1,500W (peak) Class D amplifier, powered by a 24-bit DSP with LCD display. Controls offer essential functions such as Bass Boost , variable X-Over (60–150 Hz), Polarity , Delay , and dedicated presets ( SONAR , Cardioid Front , and Cardioid Rear ) for quickly and efficiently implementing cardioid setups . A wooden construction with a metal grille and MultiGrip handles ensures transport and stage reliability, while the M20 base makes it easy to mount speaker poles.

Main features

• Powerful and controlled bass : 1 × 15" LF transducer in bass-reflex enclosure with Class D electronics (1,500 W peak).
• 24-bit DSP with LCD : adjust Bass Boost , X-Over (60–150 Hz), Polarity , Delay , display brightness and front LED .
• Easy Cardioid : Cardioid Front and Cardioid Rear presets to reduce rear bass radiation without complex calculations.
• Coverage and level : 36 Hz – X-Over (–10 dB) / 40 Hz – X-Over (–6 dB) response ; max. SPL (measured peak): 125 dB / max. calculated SPL: 128 dB (half-space).
• Connectivity : 2 × XLR/TRS combo (balanced inputs) and 2 × XLR Thru (balanced outputs) for signal distribution.
• Touring joinery : wooden enclosure with MultiGrip handles , wheel preparation and M20 base for post.
• Easy integration : dedicated mode for operation with SONAR Xi tops ; also suitable for bass extension in other systems.

Product benefits

• Fast cardioid implementation with dedicated presets for cleaner stages and less feedback.
• Streamlined workflow thanks to direct panel control with LCD and clear menus.
• Rugged, ergonomic construction for frequent transport, rentals, and mobile events.

Use cases

• Bass reinforcement in mobile PAs and installations with SONAR 110/112/115 Xi or other full-range speakers.
• Events where directivity control is required at low frequencies (cardioid configurations).
• 2.1/2.2 systems with clear track separation and fine X-Over control.

Frequently Asked Questions

• How do you configure cardioid mode? Select Cardioid Front or Cardioid Rear from the DSP menu and arrange the subwoofers according to the diagram in the manual to minimize bass from behind the system.
• What is the adjustable crossover range? From 60 to 150 Hz via the LCD panel.
• What inputs and outputs does it have? 2 × XLR/TRS combo (In) and 2 × balanced XLR Thru (Out).

Description for projects

HK Audio SONAR 115 Sub D active subwoofer; bass-reflex enclosure; LF 1 × 15" ; 1,500 W (peak) ; max. SPL (measured peak) 125 dB / max. calculated SPL 128 dB (half-space); response 40 Hz – X-Over (–6 dB) / 36 Hz – X-Over (–10 dB) ; variable X-Over 60–150 Hz ; 24-bit DSP with LCD (Bass Boost, Polarity, X-Over, Delay, LED, Dim, Reset); 2 × XLR/TRS In and 2 × XLR Thru Out ; M20 base ; wooden enclosure with 2 × MultiGrip , preparation for casters; dimensions 43 × 61.2 × 61.6 cm ; weight 28.4 kg ; black color with metal grille and acoustic foam.