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JAM Systems SB118-33 Empty Subwoofer Cabinet for 1 x 18" Driver

18mm plywood cabinet, with polyurea heavy duty coating - Includes custom hex grill
Product Code: JMSBOXSB118_33 Brand: JAM Systems Model: SB118-33
JAM Systems SB118-33 Empty Subwoofer Cabinet for 1 x 18 inch Driver
HOT DEAL:
£332.50
£332.50 ex VAT
SRP £358.33
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Quantity Discounts
2-3£350.00 ea.
4-9£341.67 ea.
10+£333.33 ea.
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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 alignment and fitting
  • 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 (pre-linked)
  • 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) ** Wheels not included - available for purchase separately
  • All cabinet fixings use T-nuts and machine screws (no self-tappers)
  • Scratchproof PolyUrea finish for professional durability
Parameter Specification
External Dimensions700mm (H) × 580mm (W) × 580mm (D)
Internal Dimensions664mm (H) × 544mm (W) × 480mm (D)
Total Internal Volume173 litres
Port Dimensions65mm (H) × 544mm (W) × 330mm (D) (2 × 18mm braces)
Port Air Volume~10.9 litres
Total Volume (port + panels)~14.9 litres
Effective Internal Volume (net)~158 litres
Tuning Frequency (Fb)33Hz
Front Baffle Cutout Diameter423mm
Bolt Circle Diameter (BCD)440mm
Drivers for heavy sub bass
(Dance Music, etc)		B&C 18TBW100, Faital Pro 18XL1600, RCF LF18X401, Lavoce SAF184.03
Drivers for punchy, precise bass
(Live Bands)		B&C 18TBX100, Beyma 18Lex1200Fe, Fane Colossus Prime 18XS
Recommended Driver Type18" subwoofer, Fs 32–35Hz, Qts 0.34 -0.39
Weight (incl. grill, handles) 30.3kg
Carton Dimensions800mm (H) x 680mm (W) x 680mm (D)
Shipping Weight35.3kg
Other JAM Systems products similar to JAM Systems SB118-33 Empty Subwoofer Cabinet for 1 x 18" Driver :
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