HK LINEAR-SUB-1800-A 1200 Watt 18" Active Subwoofer

The HK LINEAR SUB 1800 A is a powerful 18" active subwoofer built for maximum depth and impact. Delivering thunderous bass down to 38 Hz and up to 132 dB of peak SPL, this sub is the perfect add-on for LINEAR 3 or LINEAR 5 mid/high units, or as a bass extension for ELEMENTS BIG BASE systems. Its road-tough MDF enclosure, Class D amp, and multiple protection circuits make it equally suited for stage or installation use where high output and clean low end are a must.

Features

• 1200W peak Class D amplifier delivers rich, high-output bass
• 18" woofer with 3" voice coil produces tight and deep low-end performance
• Peak SPL of 132 dB and response down to 38 Hz (-10 dB)
• Adjustable crossover frequency: 100 Hz or 120 Hz (24 dB/oct slope)
• Ideal bass companion for LINEAR 3, LINEAR 5, or ELEMENTS BIG BASE systems
• Active protection circuits include thermal, short circuit, subsonic filtering, and peak limiting
• Dual XLR combo inputs with separate thru and mid/high outputs for flexible integration
• M20 threaded pole mount and ergonomic MultiGrip side handles
• Rugged MDF cabinet with black acrylic enamel finish and steel grille
• IEC power connector with V-Lock cord retention for secure use on the road

Specifications

Acoustic Performance
- Max SPL (Avg @ 10% THD): 130 dB (half space, 40 Hz – X-over avg)
- Max SPL (Peak @ 10% THD): 132 dB (half space)
- Frequency Response (±3 dB): 42 Hz – X-over
- Frequency Response (-10 dB): 38 Hz – X-over
- Crossover Frequency: 100 Hz / 120 Hz switchable, 24 dB/oct slope

Power & Electronics
- Amplifier Output: 1200 W Peak
- Amplifier Type: Class D
- Power Consumption: 3 A @ 220–240 V / 6 A @ 100–120 V nominal
- Mains Connector: 1 x IEC with V-Lock cord retainer
- Protection: Undervoltage, thermal, short circuit, overcurrent, subsonic filter (24 dB/oct), peak limiter

Driver
- LF Driver: 1 x 18", 3" voice coil

Audio I/O
- Inputs: 2 x XLR combo (balanced)
- Outputs: 2 x XLR Thru (balanced), 2 x XLR Mid/High Out
- Input Sensitivity: +4 dBu (gain center-notched)

Construction
- Housing: 16 mm MDF
- Finish: Black acrylic enamel
- Grille: 2 mm steel grille with black acoustic foam backing
- Handles: 2 x MultiGrip
- Pole Mount: 1 x M20 threaded insert

Dimensions & Weight
- Dimensions (WxHxD): 51 x 67 x 72 cm (20.08" x 26.38" x 28.35")
- Weight: 42 kg (92.6 lbs)