The double barrel big gun.

The Mackie S218S Precision Subwoofer anchors a high-performance 18" driver in a tough, 18mm Baltic birch wood enclosure. 2000W of peak power! Mackie gives you Neutrik Speakon and 1/4" TRS inputs with this Precision bass speaker. With its convenient carry handles, good ergonomic design, and durability, the Mackie S218S is also ready to travel.

Mackie S218S Precision Passive Single 18" Subwoofer Pair Features:

High-performance Precision Passive subwoofer with transducer and crossover design by renowned EAW engineering team
Bass-reflex driver enclosure for punchy, precise low-end and compact size
Professional 18mm Baltic birch wood construction with pressure-injected structural resin
Dual carry handles for easy loading and transport
500 watts long-term power handling; 2000 watts peak
Single 18" (457mm) LF driver with incredibly resilient high-temperature voice coil
Built-in low-pass filter eliminates need for external crossover for use with full range signals

Mackie S218S Precision Passive Single 18" Subwoofer Pair Specifications:

Frequency Range ( 10 dB): 38 Hz 360 Hz
Peak Sensitivity: 95.1 dB, 1 W/1 m
Maximum SPL Long-term @ 1m: 122 dB @ 1m
Crossover Points: 180 Hz, 12dB/octave
Input Protection: Low frequency dynamic bass protection, RMS limiting, power supply and amplifier thermal protection.
Basic Design: Bass Reflex
Material: 15 mm multi-layered plywood
Finish: Black Paint
Handles: One on each side
Grille: Perforated metal with weather-resistant coating
Dimensions (H x W x D): 30" x 21" x 21"
Weight: 81.5 lbs.