JBL TM620
¥ 50,000 (1 unit, around 1990)
Commentary
A 2-way in-vehicle speaker system.
Uses low-distortion SFG magnetic circuit and edge-wise wound voice coil.
Polypropylene cone is used for the low range, and pure titanium diaphragm is used for the high range.
Model Rating
| Method | 2-way in-vehicle speaker unit |
| Impedance | 4 Ω |
| Frequency characteristic | 50 Hz to 27 kHz |
| Allowable input | 80W |
| Output sound pressure level | 91dB |
| Aperture | 160mm |