JBL Control 31 Two-Way High-Output Indoor-Outdoor Monitor Speaker

About: JBL Control 31 Two-Way High-Output Indoor-Outdoor Monitor Speaker

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.

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.

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.

Available in black or white (-WH), the cabinet will accept a variety of paints to match any décor.

Features

• Components:
  • 250 mm (10 in) woven fiberglass cone LF driver with 52 mm (2 in) voicecoil.
  • High-output 2414H-C compression driver with 25 mm (1 in) exit, unique (patented) design and high-temperature polymer diaphragm.
• 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.

Specifications

• Frequency Range (-10dB) -  33Hz – 19kHz
• Frequency Response (±3 dB) -  42Hz – 14kHz
• Power Ratings -  250 W (1000 W peak), 2 hrs. 200 W (800 W peak), 100 hrs.
• Maximum SPL (1m) -  116 dB continuous (123 dB peak)
• 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
• 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
• Drivers
  • LF: 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.
  • HF: 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 -  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.
• Mounting hardware -  InvisiBall wall-mounting system included. Ten 6 mm 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.
• Outdoor Capability -  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.
• Input Connectors -  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).
• Safety Agency -  Transformer is listed per UL1876
• Colors -  Black (RAL9004) or white (-WH, RAL9003)
• Dimensions (H x W x D) -  593 x 372 x 345 mm (23.3 x 14.6 x 13.5 in)
• Net Weight (each) -  18.8 kg (41.5lb)
• Shipping Weight -  (ea) 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