SKB 3I-1813-7B-C 18" X 13" X 7" Foam Injected Molded Water Tight Mil-Spec Case with Cubed Foam


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Dale #:SKB-3I18137BC

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  • Available in well over 40 configurations, the 3I Series of waterproof cases are the perfect solution for storing and transporting your delicate electronics, A/V equipment, microphones, mixers, cables, computers or percussion and music accessories. Most sizes are available with a variety of interiors to accommodate the needs of the traveling musician. Interior options on most models include cubed foam, layered foam, padded dividers, or an empty interior.

    • Ultra high-strength polypropylene copolymer resin
    • UV, solvent, corrosion and fungus resistant (MIL-STD-810F)
    • Complete gasket seal makes these cases absolutely watertight (MIL-STD-C-4150J)
    • Automatic ambient pressure equalization value (MIL-STD-648C & IP67)
    • Resistant to corrosion and impact damage
    • Continuous molded-in hinge
    • Patent pending trigger release latch system
    • Rubber over-molded cushion grip handle
    • Layers of cubed foam for customization
    • Locking loops to accept a customer supplied lock

    3I Series injection molded waterproof cases are constructed of ultra high-strength polypropylene copolymer resin and feature a gasketed, waterproof and airtight, submersible design (IP67) that is resistant to corrosion and impact damage. Its continuous molded-in hinge, patent pending "trigger release" latch system, comfortable, snap-down rubber over-molded cushion grip handle, secure stacking, and automatic ambient pressure equalization valve (MIL-STD-648C) all contribute to its military grade design.

  • Acoustic Performance
    Frequency Range (–10 dB)38 Hz–360 Hz
    Sensitivity (1W/1m)99 dB SPL
    Max SPL long-term122 dB @ 1m
    Max SPL peak128 dB @ 1m
    Crossover Point180 Hz, 12 dB/octave
    Woofer LoadingBass refl ex
    Input/Output TypeNeutrik Speakon™ and female 1/4-in. TS jack
    Input Impedance (nominal)8 ohms
    Input Impedance (minimum)3.9 ohms @ 110 Hz
    Recommended Lowpass Filter (if using external crossover)150 Hz, 24 dB/octave
    Recommended Amplifi er Power500 watts rms continuous;2000 watts peak
    Low-Frequency Section
    Woofer Diameter18.0 in/457 mm
    Voice Coil Diameter3 in/76 mm
    Diaphragm MaterialCellulose
    Magnet MaterialFerrite
    Construction Features
    Basic DesignBass refl ex
    Material15 mm multi-layered plywood
    FinishBlack paint
    HandlesOne on each side
    GrillePerforated metal with weather-resistant coating
    Physical Properties
    Height 30.0 in/76.2 cm
    Width21.0 in/53.3 cm
    Depth21.0 in/53.3 cm
    Weight81.5 lb/37.0 kg
    Mounting MethodsFloor mount only.
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