JBL 4645B
Price unknown (1 unit, around 1999)
Commentary
This is a sub-woofer system for theaters that has been certified by THX.
The unit is equipped with 46 cm cone type woofer.
This unit uses Super-Bent Gap (SVG) and Symmetric Field Geometry (SFG) achieve high sensitivity and high sound quality while maintaining low distortion.
Model Rating
| Method | 1-Way, 1-Speaker, Bass Reflex System, Floor Type |
| Units Used | For low band : 46 cm cone type |
| Frequency range (-10dB) | 18 Hz ~ (no EQ) |
| Frequency Response (± 3 db) | 22 hz ~ (with EQ) |
| Allowable input | 800W(IEC) |
| Sensitivity (1W, 1m) | 97dB SPL |
| Nominal impedance | 8 Ω |
| Recommended crossover frequency | 80 Hz to 120 Hz |
| External dimensions | Width 674x Height 1,010x Depth 450 mm |
| Weight | 63kg |