JVC SX-A7B Loudspeaker System
The SX-A7B was a 4-way, 5-speaker system with passive radiator, manufactured by the JVC Corporation. It was a 240-watt (music power) system consisting of 20 cm woofer, 25 mm tweeter, and 33 mm midrange. Each speaker cabinet had a pair of 75 mm cone drivers at the back, so that the sound would reflect off the back wall to enhance the sense of ambience. These speakers also had a self-restoring protector mechanism to prevent damage to the drive units through overload.
Specification
| Model Name | SX-A7B |
| Type | 4-way, 5-speaker, with passive radiator |
| Woofer | 20 cm, cone |
| Midrange | 3.3 cm, soft dome |
| Tweeter | 2.5 cm, soft dome |
| Rear Speakers | 7.5 cm, cone × 2 |
| Passive Radiator | 23.4 cm × 35 cm |
| Power (DIN) | 150-watts |
| Power (Music) | 240-watts |
| Impedance | 6 Ω |
| Sensitivity | 89 dB/W.m |
| Frequency Range | 25 Hz to 23 kHz |
| Crossover Frequencies | Front:(50 Hz, 1.2 kHz, 6.5 kHz) Rear:(4 kHz) |
| Dimensions | 390 mm × 807 mm × 260 mm |
| Mass | 18.5 kg |