JBL 2225H/2225J
¥ 72,000 (1 unit, around 1983)
Commentary
A 38 cm cone woofer unit designed for sound reinforcement.
In the 2225H/2225J, the allowable input is improved by improving the damper.
In addition, the corrugation of the cone paper provides smooth attenuation and less distortion on the high-frequency side, so it can be used at relatively high crossover frequencies.
The magnetic circuit uses a low-distortion SFG structure and takes advantage of the high linearity of the 16 mm long voice coil.
Because fo is relatively high, flat low-frequency characteristics can be obtained in a small volume bass reflex enclosure as well as horn loading.
There were 2 types of 2225H, 8 Ω and 16 Ω. The 16 Ω model has a model number of 2225J (2225 hj).
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Model Rating
| Type | 38 cm Cone Woofer |
| Impedance | 2225H : 8 Ω 2225J : 16 Ω |
| Allowable input (continuous program) | 400W |
| Sound pressure level | 97dB/W/m |
| Frequency band | 30 Hz to 2 kHz |
| fo | 40Hz |
| Recommended crossover frequency | 1.2 kHz or less |
| Effective diaphragm diameter | 33.7cm |
| Voice Coil Diameter | 10cm |
| Magnetic flux density | 13,500gauss |
| Bl factor | 20.5T / m |
| Effective mass | 0.100kg |
| Recommended enclosure volume | 84 ~ 285 liters |
| External dimensions | Diameter 388x Depth 133 mm |
| Weight | 10.1kg |
| Thiele-Small Parameters | |
| fs | 40Hz |
| Re | 2225H : 6.3 Ω 2225J : 12.9 Ω |
| Qts | 0.28 |
| Qms | 2.5 |
| Qes | 0.31 |
| Vas | 175L |
| SD | 0.089m2 |
| Xmax | 5mm |
| VD | 445cm2 |
| Le | 2225H:1.1mH 2225J:2.2mH |
| Η0(Half space) | 3.5% |
| Pe(max) (continuous sine wave input) | 200W |
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