DIATONE PW-4011(B)
¥ 80,000 (1 piece, around 1970)
Commentary
40 cm cone type woofer unit adopted for AS-4001, AS-4021, etc.
It has been developed for high-fidelity large speaker systems, especially for bass speakers with high undistorted maximum output sound pressure level.
The only difference between PW 4011 and PW 4011 b is the impedance.
Model Rating
| Method | Cone type woofer unit |
| Aperture | 40cm |
| Impedance | PW-4011 : 32 Ω PW-4011B : 8 Ω |
| Rated input | 40W |
| Low resonance frequency | 30Hz |
| Playback frequency band | 30 Hz to 1000 Hz |
| Output sound pressure level | 102dB/VA (at 50 cm) |
| Effective vibration radius | 17.6cm |
| Equivalent mass of the vibration system | 130gr |
| Equivalent Qo of the vibration system | 0.4 |
| Voice Coil Diameter | 13 cm φ |
| Magnetic flux density | 7000gauss |
| Total flux | 90x104maxwells |
| Permanent magnet | 140 φ x95 φ x50 |
| Baffle opening diameter | 401mm |
| Outer Diameter Dimension | Diameter 450x Depth 200 mm |
| Weight | 25kg |