Jbl 2012 h brochure

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c2012H Maximum Output 250 mm Midrange/Mid-Bass Transducer JBL Professional 8500 Balboa Boulevard, P.O. Box 2200 Northridge, California 91329 U.S.A. A Harman International CompanySS 2012H CRP 10M 9/98 TYPICAL RESPONSE and IMPEDANCE CURVES Frequency response contour of the 2012H taken in a hemispherical free-field environment, a closed box of 280 liters (10 ft 3) internal volume enclosing the rear of the driver. Input signal is 2.83V @ 1 meter. Measured response of a typical production unit, including all peaks and dips, does not deviate more than 2 dB from the above curve. The dotted line represents measured 45 degree off-axis response. The dashed curve represents the response when the dri- ver is mounted in a 8.5 liter (0.3 ft 3) enclosure tuned to 75 Hz. The impedance magnitude curve is measured in the 280 liter (10 ft 3) sealed enclosure. DISTORTION vs. FREQUENCY Distortion measurements taken with an input of 15.5V @ 1 meter (30 watts at 8 ohms). Distortion levels shown have been raised by 20 dB. The dashed line shows 2nd harmonic and the dotted line shows the 3rd harmonic. Note lack of 3rd harmonic at high frequencies. JBL continually engages in research related to product improvement. Some materials, production methods and design refinements are introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed the original design specifications unless otherwise stated. Specifications: Nominal Diameter: 250 mm (10 in)Rated Impedance: 8 ohmsPower Capacity 1: 300 W Sensitivity 2: 100 dB SPL, 1 W, 1 m (3.3 ft) Frequency Range 3: 75 Hz - 7 kHz Power Compression4: at -10 dB power (30 W): 0.6 dB at -3 dB power (150 W): 2.0 dB at rated power (300 W): 3.4 dB Distortion 5: 2nd harmonic: <1% 3rd harmonic: <1% Highest Recommended Crossover: 5.5 kHzRecommended Enclosure Volume: 10 - 30 liters (0.35 - 1.05 ft 3) Effective Piston Diameter: 199 mm (7.8 in) Maximum Excursion Before Damage: 16 mm (0.65 in) Minimum Impedance: 7 ohms ± 10% @ 25° CVoice Coil Diameter: 76 mm (3 in)Voice Coil Material: Edgewound Aluminum Ribbon Voice Coil Winding Depth: 20.3 mm (0.8 in) Magnetic Gap Depth: 12.6 mm (0.5 in) Magnetic Assembly Weight:: 7.7 kg (17 lb) Bl Factor: 15.5 tesla meters Flux Density: 1.0 tesla Effective Moving Mass: 30 g Polarity: EIA (Positive voltage to RED terminal gives forward cone motion) THIELE/SMALL PARAMETERS 6:fs: 61 HzRe: 4.7 ohms Qts: .21 Qms:4 Qes: .22 Vas: 31 lSd: 0.031 m 2(48.05 in 2) Xmax (10 % THD): 5 mm (0.20 in) Vd: 155 cm 3(9.46 in 3) Le: N/A (purely resistive at 1 kHz) h0(half-space): 3.1%Pe(Max) 1: 300 W continuous pink noise MOUNTING INFORMATION: Overall Diameter: 237 mm (9.33 in) square 261 mm (10.25 in) round Bolt Circle Diameter: 245 mm (9.63 in) Baffle Cutout Diameter: Front Mount: 229 mm (9.0 in) Rear Mount: 222 mm (8.75 in) Depth: 117 mm (4.6 in) Volume Displaced by Driver: 2.15 liters (0.076 ft 3) Net Weight: 8.6 kg (19 lb) Shipping Weight: 9.1 kg (20 lb) 1AES standard (100 Hz - 1000 Hz pink noise)2Sensitivity is based on a swept 500 - 2500 Hz signal for an input of 2.83 V @ 8 ohms.3Frequency range is defined as the frequency extremes over which the response is -10 dB relative to the rated sensitivity. 4Power compression is the sensitivity loss at the specified power, measured from 100 to 1000 Hz, after a 5 minute AES standard pink noise preconditioning test at the specified power. 5Distortion is measured at -10 dB rated power, from 100 to 500 Hz.6Thiele/Small parameters are measured after 2 hour exercise period using a 300 W AES power test and reflect the expected long-term parameters once the driver has been installed and operated for a short period of time. Impedance (ohms)