JAM Systems SB118-33 Empty Subwoofer Cabinet for 1 x 18" Driver
Built for serious bass performance, this 18" subwoofer cabinet combines rugged construction with precise acoustic tuning. Crafted from 18mm high-grade plywood and finished in an extra-tough PolyUrea coating, it’s engineered to withstand years of hard touring and heavy use. Measuring 700mm high × 580mm wide × 580mm deep, the cabinet’s footprint has been carefully chosen — the 580mm width is the magic dimension that allows three cabinets to fit perfectly across the back of a standard panel van, making transport simple and efficient. With a 33Hz tuning frequency, it delivers deep, heavy bass that pairs beautifully with subwoofer drivers around 32–35Hz Fs, giving you extended low-end power with excellent definition. Designed for practicality as well as performance, every detail is built with the professional user in mind.
Key Features
- 18mm high-grade plywood construction
- Custom hex steel grille with acoustic foam backing
- Recessed cage-nut fittings for easy grille removal
- M20 screw-in top hat mount for satellite speakers
- Heavy-duty metal bar handles on each side
- Dual recessed rear connector dish with 2 × Neutrik NL4MP
- Precision-cut interlocking feet/slots for secure stacking
- Port tuning at 33Hz for deep, heavy bass
- Pre-drilled and T-nutted for 4 × standard castors (3151 series)
- All cabinet fixings use T-nuts and machine screws (no self-tappers)
- Scratchproof PolyUrea finish for professional durability
- Pre-drilled bolt holes on rear of cabinet ready to accept castor wheels
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