Pioneer PW-A30
¥ 18,100 (around 1974)
Commentary
A series 30 cm cone shaped woofer.
The cone paper is made of carefully selected fiber material with high Young's modulus and moderate internal loss.
In addition, high compliance type roll edge is adopted for the edge.
Magnetic circuit using large ferrite magnet is adopted.
The voice coil uses a long voice coil with high magnetic efficiency and uniform magnetic flux even at large amplitude.
Model Rating
Type | 30 cm Cone Woofer |
Impedance | 8 Ω |
Lowest resonance frequency (fo) | 20 Hz to 30 Hz |
Reproduction frequency characteristic | Fo ~ 3 kHz |
Max Input | 60W |
Rated input | 30W |
Output sound pressure level | 97dB/W/m |
Crossover frequency | 3 kHz or less |
Qo | 0.3(fo:25Hz) |
Total flux | 180,000maxwell |
Magnetic flux density | 12,000gauss |
Equivalent mass | 46gr |
Baffle opening | 270 φ mm or 310 φ mm |
External dimensions | Diameter 340x Depth 135 mm |
Weight | 6.7kg |