JBL 2450H/2450J
¥ 195,000 (1 unit, released in 1988)
¥ 181,650 (tax included, 1 unit, around 2007)
Commentary
High frequency compression driver unit with throat diameter of 49 mm.
The 2450H is an 8 Ω model and the 2450J is a 16 Ω model, and only the 2450J was sold only the j was sold.
A phase plug with a coherent wave structure is adopted.
The diaphragm is made of titanium and has a unique diamond surround structure edge to reduce metal fatigue and improve durability.
Neodymium magnet is used for the magnetic circuit.
Model Rating
| Type | Driver unit |
| Throat diameter | 49mm |
| Nominal impedance | 2450H : 8 Ω 2450J : 16 Ω |
| Allowable input (continuous program) | 100W(>500Hz) 150W(>1kHz) |
| Sensitivity (1W, 1m) | 111 dB SPL (2 kHz octave band with Q = 6.3 horn) |
| Frequency range (-10dB) | 500 Hz to 20 kHz |
| Recommended minimum crossover frequency | 500Hz |
| Diaphragm | Φ 100 mm, Pure Titanium |
| Voice coil | Φ 100 mm, Edge Rolled Aluminum / Ribbon |
| Polarity (*) | - |
| Magnetic flux density | 1.9T |
| Dimensions | Diameter 168x Depth 142 mm |
| Weight | 4.8kg |
| * When a positive voltage is applied to the red terminal, the direction in which the cone moves + : front / - : rear | |