2241G/H 460 mm (18 in) Low Frequency Transducer

1 2241G/H460 mm ( 18 in )Low FrequencyTransducerProfessional SeriesKey Features:600 W continuous pink noisepower capacity 100 mm (4 in) edgewoundaluminum ribbon voice coil30 Hz-3 kHz response98 dB sensitivity, 1 W, 1 m ( ft)SFG magnet structure with VentedGap Cooling technologyThe JBL 2241G/H low frequencytransducer represents the results ofJBL s latest engineering research inhigh power Transducer design. The2241G/H signifies a major advancein speaker design by incorporatingJBL s patented Vented Gap CoolingTMtechnology in an improved Symmetri-cal Field Geometry (SFG) increase power handling whilereducing power compression, JBLengineers have created a unique,direct voice coil-to-air heat dissipationmethod called Vented Gap process pumps air through themagnetic gap and directly over andaround the voice coil to provideimmediate heat transfer and reductionin operating temperature - a directimprovement in power the use of new computer-aided magnet optimization and analy-sis techniques, JBL engineers wereable to optimize both magnet weight,flux density and field saturationresulting in a kg ( lb)

2 Reductionin overall driver weight and a signifi-cant reduction in harmonic new magnet structure offersmuch of the weight advantage of rareearth magnet structures without theprohibitive cost. Patent #5,042,072. Foreign patents :Nominal Diameter: 460 mm ( 18 in )Rated Impedance: 4 ohms (G)8 ohms (H)Power Capacity1:600 W continuous pink noiseSensitivity2:98 dB SPL, 1 W, 1 m ( ft) Frequency Range3:30 Hz - 3 kHzPower Compression4:at - 10 dB rated power (60 W) dBat - 3 dB rated power (300 W) dBat rated power (600 W) dBDistortions2nd harmonic: 5 harmonic: 5 Recommended Crossover: 800 HzRecommended Enclosure Volume:140-340 1(5-12 ft3)Effective Piston Diameter:397 mm ( in)Maximum Excursion BeforeDamage (p-p):40 mm ( in)Minimum ohms 10% @ 25 C (G), ohms 10% @ 25 C (H)Voice Coil Diameter.

3 100 mm (4 in)Voice Coil Material:Edgewound aluminum ribbonVoice Coil Winding mm ( in)Magnetic Gap mm ( in)Magnetic Assembly kg (15 lb)Bl Factor: N/A(G) N/A(H)Effective Moving Mass: kgPositive voltage on BLACK terminal gives forward diaphragm standard (50-500 Hz).2 Sensitivity is based on a swept 100 Hz to 500 Hz signal for an input of V @ 8 ohms or V @ 4 range is defined as the Frequency extremes where the response is - 10 dB from the rated compression is the sensitivity loss at the specified power, measured from 50 to 500 Hz, after a 5 minuteAES standard (50-500 Hz)

4 Pink noise preconditioning rest at the specified is measured at - 10 dB rated power, from 100-500 HZJBL continually engages in research related to product improvement New materials, production methods, and designrefinements are introduced into existing produce without notice as a routine expression of that philosophy. For thisreason, any current JBL product may differ in some respect from its published description but will always equal or exceedthe original design specifications unless otherwise stated. 2241G/H 460 mm ( 18 in ) Low Frequency TransducerWith increased power handling, special attention waspaid to increased mechanical integrity.

5 A new cone designwhich greatly improves cone strength allows for increasedreliability and longer life. Greater linear excursion formatched power and displacement levels was achieved viaa new surround topology and edge damping 100 mm (4 in) voice coil benefits from a new windingtechnique which offers greater thermal stability withincreased power handling. All elements of the cone, voicecoil and suspension system have been carefully optimizedand controlled to ensure smooth high Frequency most applications, the 2241G/H can provide morelow Frequency response, 3 dB more output and lessdistortion than the 2240G/H, with little or no 2241G/H is ideally suited for use in touring andfixed sound applications where high SPL and deep bassresponse are required.

6 Its low distortion and smoothfrequency response make the 2241G/H suitable forcritical monitoring applications as PARAMETERS6:fs: 35 HzRe: ohms (G) ohms (H)Qts: : : : 310 l( ft3)S,: m2 ( in2)Xmax: mm ( in)Vn: 942 cm3 ( in3)Le: mH (G) mH (H)~~ (Half space)2: (Max)l:600 W continuous pink noiseMOUNTING INFORMATION:Overall Diameter: 464 mm ( 18 in )Bolt Circle Diameter: 441 mm (17 3/8 in)Baffle Cutout DiameterFront Mount: 427 mm (16 13/16 in)Rear Mount: 428 mm (16 55/64 in)Depth7: 191 mm (7% in)Volume Displaced byDriver: ( ft3)Net kg (23 lb)Shipping kg (27 lb)6 Thiele/Small parameters are measured after a 2 hour exercise period using a 600 WAES power test and will reflect the expected long term parameter values once the driverhas been installed and operated for a short period of of at least 76 mm (3 in)

7 Must be provided behind the magnet assembly andthe gap vents to allow sufficient air circulation and proper cooling to take Response and Impedance Curves, EnclosureVolume and Port TuningFREQUENCY IN HzFrequency response contour of the 2241G/H taken in a hemisphericalfree-field environment, a closed box of 280 l(l0 ft3) internal volumeenclosing the rear of the driver. Measured response of a typical pro-duction unit, including all peaks and dips, does not deviate more than2 dB from the above curve. The dotted line represents measured 45degree off-axis response. The dashed curve represents the responsewhen the driver is mounted in a 280 1 (10 ft3) vented enclosure tunedto 30 Hz using a port with an area of 320 cm2 (50 in2) and a length of20 cm (8 in).

8 The impedance magnitude curve is measured in vs. FrequencyDistortion levels raised 20 dB, measured at 60 watts, 1 Professional8500 Balboa Boulevard, PO. Box 2200 Northridge, California 91329 A Harman International CompanySS 2241 G/HCRP 2M12/95