HK Audio PORTABLE SUB 118 A Active 18-Inch Subwoofer

HK Audio PORTABLE SUB 118 A Active 18-Inch Subwoofer

The HK Audio PORTABLE SUB 118 A Active 18-Inch Subwoofer delivers extended low-end response for portable PA systems that need maximum bass performance. It combines an 18" woofer, 1400W peak Class D amplification, 131 dB peak SPL, 24-bit DSP, and preset-based tuning for flexible professional sound reinforcement.

Designed for DJs, live performers, rental providers, and production crews, this active subwoofer adds deeper bass to LUNAR, POLAR, SONAR, and general PA setups. Use the HK Audio PORTABLE SUB 118 A for dance floors, live events, mobile sound systems, and 2.1 speaker configurations that need stronger low-frequency output.

A stereo preamp, selectable filter presets, polarity switching, gain control, and limiter protection help the sub integrate cleanly without complex setup. The bass reflex MDF cabinet, M20 pole mount, MultiGrip handles, steel grille, and German manufacturing make it a durable subwoofer for demanding portable audio applications.

Portable 18-Inch Active Subwoofer Features

• 18" Low-Frequency Driver: Delivers extended bass response and added punch for high-impact live sound applications.
• 1400W Peak Power: Class D amplification provides strong low-frequency output for mobile PA and event production systems.
• 131 dB Peak SPL: Produces powerful sound pressure for larger portable setups and bass-heavy program material.
• Preset-Based Integration: LUNAR, SONAR, POLAR, and General LPF 100 Hz presets adapt the subwoofer to different systems.
• Integrated Stereo Preamp: Supports 2.1 system configurations with flexible left and right signal routing.
• Flexible Connections: Dual XLR/jack combo inputs and dual XLR Thru outputs simplify integration with speakers and mixers.
• Gain and Polarity Control: Adjustable gain and 0°/180° polarity switching help tune bass response in the room.
• Road-Ready Cabinet: MDF construction, acrylic enamel finish, MultiGrip handles, and steel grille support professional transport.

Technical Specifications

• Product Type: Active subwoofer
• Brand: HK Audio
• Model: PORTABLE SUB 118 A
• Concept: Active subwoofer
• Cabinet Principle: Bass reflex
• Maximum SPL Peak: 131 dB
• Maximum SPL Measurement: 1 x subwoofer at 1 m, 10% THD, half space
• Crossover Frequency: 100 Hz / 80 Hz depending on preset
• Frequency Range -6 dB: 35 Hz - X-Over
• Frequency Range -10 dB: 31 Hz - X-Over
• Low-Frequency Driver: 1 x 18" woofer with 3" voice coil
• Crossover: X-Over with 24 dB/oct.
• Power Supply Connection: 1 x IEC connector
• Analog Input: 2 x balanced XLR/jack combo inputs
• Analog Output: 2 x balanced XLR Thru outputs
• Preamplifier: Stereo preamp
• DSP Processing: 24-bit DSP for optimized performance and impulse response
• Power Amplifier: Class D, biamped
• Power Amplifier Output RMS: 700 W
• Power Amplifier Output Peak: 1400 W
• Power Consumption: 0.5 A / 220-240 V AC at 1/8 output power; 0.9 A / 100-120 V AC at 1/8 output power
• Maximum Input Level: 20 dBu
• Speaker Protection: Subsonic filter, peak limiter, and RMS limiter
• Sample Rate: 48 kHz
• Latency: 2 ms - 3.3 ms depending on preset
• Filter Presets: LUNAR, SONAR, POLAR, General LPF 100 Hz
• Compatible Systems: HK Audio LUNAR, POLAR, POLAR MK2, and SONAR systems
• Controls: Gain control, preset selector, 0°/180° polarity switch, limit indicator, power switch
• Cabinet Features and Rigging: 1 x M20 pole mount
• Carrying Handles: 2 x MultiGrip handles
• Cabinet Material: MDF
• Cabinet Surface: Acrylic enamel
• Color: Jet black, RAL 9005
• Front Grille: Steel front grille backed with acoustic foam
• Dimensions: 20.08" x 24.19" x 27.66" (W x H x D)
• Weight: 86.65 lbs
• Compatible Accessory: Protective Cover PORTABLE SUB 118 A
• Country of Manufacture: Germany
• Warranty: 5-year manufacturer’s warranty upon registration