JBL Control 31

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Overview

Two-Way High-Output Indoor-Outdoor Monitor Speaker

Key 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 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)
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-fibreglass cone with pure butyl rubber surround, 52 mm (2 in) voice coil on high-temperature fibreglass voice coil former, optimised cone geometry, linear suspension spider, Fea-Optimised motor construction, aluminium 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 mould for additional cabinet density.
Grille	Zinc-plated and thermoset-composite coated steel, WeatherMax™ multi-layer foam with tight-weave mesh vapour barrier.
Installation	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.
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
Colours	Black (RAL9004) or white (-WH, RAL9003)
Dimensions	593 x 372 x 345 mm (23.3 x 14.6 x 13.5 in)
Weight (ea)	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.
Optional Accessories	MTC-30MK Marine-Kit Grille in black or white (-WH), consisting of grille and protective covers for baffle screws. MTC-30CM (&-WH) Ceiling-Mount Adapter for installing speaker down from the ceiling. MTC-30UB (&-WH) U-Bracket