Pioneer PAX-A20
¥ 8,300 (around 1974)
¥ 9,500 (around 1978)
Commentary
A series 2-way coaxial speaker unit.
A 20 cm cone type woofer is used for the low range.
Ferrite magnets are used for the magnetic circuit, and high-compliance cone paper with roll edges, large dampers, and voice coils made of aluminum wire with a wide winding width are used for the vibration system. These measures improve the linearity against amplitude and the distortion at large input.
A wide-angle cellular horn is used for the high frequency band, and the directional characteristics are improved by an equalizer installed in front of the diaphragm.
Model Rating
Type | 20cm2-way coaxial speaker |
Impedance | 8 Ω |
Lowest resonance frequency (fo) | 28 Hz to 42 Hz |
Reproduction frequency characteristic | Fo ~ 20 kHz |
Max Input | 20W |
Rated input | 10W |
Output sound pressure level | 94dB/W/m |
Crossover frequency | 5kHz |
Qo | 0.3(fo:35Hz) |
Total flux | Woofer : 99,000 maxwell Tweeter : 11,000 maxwell |
Magnetic flux density | Woofer : 10,700 gauss Tweeter : 10,500 gauss |
Equivalent mass | 16gr |
Baffle opening | 172 φ mm or 211 φ mm |
External dimensions | Diameter 234 φ x Depth 102 mm |
Weight | 2.75kg |