JBL Control 31 2-Way High-Output Indoor/Outdoor Monitor Speaker

Item # JBLCONTROL31 (Part # CONTROL31)
Brand new, USA Warranty
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Item Description:
  • 250 Watt capability plus 150 Watt transformer for 70V or 100V distributed lines
  • Extended bandwidth, extremely smooth frequency response
  • Highly outdoor-capable design with WeatherMax multi-layer grille
  • 110 x 110 degree symmetrical coverage
  • The Control 31 utilizes high-power components, computer optimized horn, and a complex network to achieve smooth, powerful high-fidelity performance, extended bandwidth, and well-controlled defined coverage from a compact loudspeaker. The 250 mm (10 inch) low-frequency driver features a woven fiberglass cone for a high degree of weather capability and pure butyl rubber surround for clean sound quality, a high-temperature fiberglass voice coil former for high sensitivity, high output capability and stable performance under long-term high power working conditions. The optimized cone geometry provides for smooth frequency response and good off-axis performance. A linear suspension spider provides low distortion, while FEA-optimized motor construction produces minimum harmonic distortion. An aluminum coupler ring outside the pole post further reduces distortion and further increases the sensitivity

    Product Highlights:

    250 Watt capability (in 8Ω thru setting), plus 150 Watt transformer for 70V or 100V distributed lines, with 8Ω thru bypass.

    Extended bandwidth, extremely smooth frequency response

    Highly outdoor-capable design with included WeatherMax™ multi-layer grille and optional marine-kit grille for salt-air environments.

    110° x 110° symmetrical coverage.

    Includes InvisiBall® mounting hardware plus ten 6 mm attachment points for suspension and optional U-bracket.

    Included sealed input panel cover and screw-down input terminals for secure connection.

    Product Features:

    The high-output high frequency compression driver features a unique patented design, high temperature polymer diaphragm, and fluid-cooling for high output levels with low distortion.

    The high-frequency waveguide was designed using JBL’s advanced ImageControl™ process for accurate, low-distortion control, with smooth frequency response and excellent sound character throughout the frequency band, over the entire listening area. It’s 110° x 110° symmetrical coverage, provides the same coverage regardless whether the cabinet is installed in vertical or horizontal orientation.

    The field-proven top-quality line distribution transformer, designed for minimal insertion loss and reduced saturation, allows for use on either 70V or 100V distributed speaker lines. In the Thru setting, the 8 ohm impedance allows for the use of up to two speakers on a 4-ohm capable amplifier channel.

    The included InvisiBall mounting method is simple to install, aims easily and provides a high degree of theft deterrence. InvisiBall allows horizontal rotation of up to 41° off-axis and vertical rotation of up to 36° (horn end inward) or 23° (woofer end inward). Attachment points for the optional MTC-30UB (& “-WH” for white) U-bracket allows for compact installation and is particularly useful for low-profile applications.

    Weather resistance has been maximized. The low-frequency driver features a woven fiberglass cone, a pure butyl rubber surround, and the basket is rear loaded into the baffle to minimize exposure. The high-frequency compression driver has a highly weather capable polymer diaphragm. The grille is thermoset composite coated and stands up well to UV as well as humidity. The grille is backed with our WeatherMax™ multi-layer foam and tight-weave screening to help prevent incursion of water. Nickel/zinc rust-resistant terminals ensure a secure input connection. An MTC-PC2 sealed-entrance cover is included to further protect the speaker’s terminals. The white-version cabinets are painted with a UV-resistant finish to resist yellowing due to UV exposure.

    Product Specifications:


    Frequency Range - (-10 dB)1 33 Hz – 19 kHz

    Frequency Response - (±3 dB)1 42 Hz – 14 kHz

    Power Ratings - 250 W (1000 W peak), 2 hrs.

    200 W (800 W peak), 100 hrs.

    Maximum - SPL @ 1m3 116 dB continuous (123 dB peak)

    Nominal Sensitivity - 92 dB

    Coverage Angle - 110° x 110°

    Directivity Factor - (Q) 5.7, averaged 500 Hz to 10 kHz

    Directivity Index - (DI) 7.3 dB, averaged 500 Hz to 10 kHz

    Nominal Impedance - 8 ohms

    Crossover Type - 2nd order low-pass, 2nd order high-pass, plus conjugate shaping circuitry

    Transformer Taps - 70V: 150W, 75W, 38W, 19W

    100V: 150W, 75W, 38W

    Insertion Loss: <0.65 dB at any tap setting

    Thru Setting: 8Ω nominal

    Recommended High-Pass - Protective 40 Hz high-pass (24 dB/oct) for any transformer tap and for 8Ω operation


    Low Frequency - 250 mm (10 in) woven-fiberglass cone with pure butyl rubber surround, 52 mm (2 in) voice coil on high-temperature fiberglass voice coil former, optimized cone geometry, linear suspension spider, FEA-optimized motor construction, aluminum ring on pole piece

    High Frequency - JBL 2414H-C compression driver with 25 mm (1 in) diaphragm and voice coil diameter, high temperature polymer diaphragm, JBL-patented design, fluid-cooled


    Enclosure Material - High impact Polystyrene (HIPS) with 10% glass fill plus patent-pending internal 5 mm foamed polyurethane secondary mold for additional cabinet density

    Grille - Zinc-plated and thermoset-composite coated steel, WeatherMax™ multi-layer foam with tight-weave mesh vapor barrier

    Installation - InvisiBall wall-mounting system included. Ten 6mm attachment points on cabinet for suspending or for optional U-bracket. One 6 mm secondary safety attachment point (for forged shoulder steel eyebolt, not included) on back panel.

    Environmental - IP-55 per IEC529. Exceeds MilSpec 810 for humidity, salt-spray, temperature & UV. Passes MilStd-202F for salt spray. Optional MTC-30MK marine-kit grille increases longevity in highly corrosive environments.

    Termination - Screw-down terminal strip, zinc-plated copper based, nickel-plated metal screws and washers. Accepts up to 9 mm outside 4 mm inside open lugs (#6, #8, or #10 lug), plus bare wire (up to 12 AWG / 2.5 mm2).

    Agency Rating - Transformer is listed per UL1876

    Colors - Black (RAL9004)

    Dimensions - 593 x 372 x 345 mm (23.3 x 14.6 x 13.5 in)

    Weight (each) - 18.8 kg (41.5 lb)

    Shipping Weight (each) - 22.0 kg (48.5 lb)

    Included Accessories - 1 pc MTC-PC2 input panel cover, InvisiBall wall-mounting system, 6 mm x 305 mm InvisiBall hex wrench

    JBL Control 31 2-Way Monitor Speaker
    1 pc MTC-PC2 input panel cover
    InvisiBall wall-mounting system, 6 mm x 305 mm
    InvisiBall hex wrench
    Authorized JBL Dealer Limited Warranty
    This Kit Includes: