| Components - 2235 H | |
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2235H Low Frequency Loudspeaker: 380mm (15 in) FEATURES:
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The JBL Model 2235H represents the latest developments in low frequency loudspeaker technology. It combines smooth response, extended low frequency bandwidth, and extremely low distortion, making it ideal for custom studio monitors and other critical applications requiring an optimum balance of efficiency and bass response. The 2235H has a low-loss magnetic structure that weighs 8.5 kg (18 5/8 lb) and incorporates JBL's unique Symmetrical Field Geometry (SFG). This design, in combination with the aluminum Flux Stabilizing Ring around the pole piece, reduces second harmonic distortion to inconsequential levels. The 100 mm (4in) diameter voice coil benefits from new adhesive technology and optimized coil-former construction of aluminum, plastic and high temperature paper for increased power capacity. The 19 mm (3/4 in) length of the voice coil allows increased linear excursion capability and the extension of usable frequency response to 20 Hz in equalized alignments and subwoofer applications. Careful choice of suspension elements, taking into account their interaction with the voice coil motion, results in a driver with tight, controlled transient response and complete freedom from dynamic instabilities. The heavy cast aluminum frame resists deformation and improves heat dissipation, and extremely tight manufacturing tolerances contribute to the high performance and linear frequency response. |
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SPECIFICATIONS
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| Nominal Diameter: | 380 mm ( 15 in) |
| Rated Impedance: | 8 ohms |
| Power Capacity: | 300 W continuous program Continuous program power is defined as 3 dB greater than continuous sine wave power and is a conservative expression of the transducer's ability to handle typical speech and music program material |
| Sensitivity: (The sensitivity rating of JBL low frequency loudspeakers is based on a signal Swept from 100Hz to 500 Hz, rather than the conventional 1 kHz single frequency test signal since these drivers are usually used below 800 Hz Therefore, usable sensitivity of the 2202H may be substantially greater than that of loudspeakers with higher published ratings The half-space reference efficiency percentages will give a consistent method for comparison of E series, Professional Series, and competitive loudspeakers in low-frequency applications.) | 93 dB SPL, 1 W. 1 m |
| Frequency Range: | 20 Hz to 2 kHz |
| Highest Recommended Crossover Frequency: | 1000 Hz |
| Recommended Enclosure Volume: | 85-285 L (3-10 ft3) |
| Effective Piston Diameter: | 337 mm ( 13 1/4 in) |
| Maximum Excursion Before Damage: | 22 mm (7/8 in peak to peak) |
| Minimum Impedance: | 7.0 ohms ± 10% @ 25°C |
| Voice Coil Diameter: | 100 mm (4 in) |
| Voice Coil Material: | Edgewound copper ribbon |
| Voice Coil Winding Depth: | 191 mm (3/4 in) |
| Magnetic Gap Depth: | 7.1 mm (0.28 in) |
| Magnetic Assembly Weight: | 8.5kg |
| Flux Density: | 1.2 T ( 12,000 gauss) |
| Bl Factor: | 20.5 N/A |
| Effective Moving Mass: | 0.155 kg Positive voltage on black terminal gives forward diaphragm motion. |
| THIELE - SMALL PARAMETERS: | |
| fs: | 20 Hz |
| Re: | 6.0 ohms |
| Qts: | 0.25 |
| Qms: | 2.5 |
| Qes: | 0.28 |
| Vas: | 460 L ( 16.2 ft3) |
| Sd: | 0.089 m2 ( 138 in2) |
| Xmax: | 8.5 mm (0.33 in) |
| Vd: | 757 cm3 (46 in3) |
| Le: | 1.2 mH |
| no (Half space)2: | 1.3% |
| Pe (Max): | 150 W Continuous sine wave |
| MOUNTING INFORMATION: | |
| Overall Diameter: | 388 mm (15 17/64 in) |
| Bolt Circle Diameter: | 370 mm ( 14 9/16 in) |
| BAFFLE CUTOUT DIAMETER: | |
| Front Mount: | 355 mm (13 31/32 in) |
| Rear Mount: | 343 mm ( 13 1/2 in) |
| Volume Displaced by Driver When Mounted in Enclosure: | 6 L (0.2 ft3) |
| Depth: | 137 mm (5 1/2 in) |
| Net Weight: | 10.1 kg (22 1/4 lb) |
| Shipping Weight: | 11.2 kg (24 3/4 lb) |
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Copyright © 2001 JBL
Professional. |
