Pioneer PAX-A25
¥ 14,200 (around 1974)
¥ 15,600 (around 1978)
Commentary
A series 2-way coaxial speaker unit.
A 25 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 | 25cm2-way coaxial speaker |
Impedance | 8 Ω |
Lowest resonance frequency (fo) | 23 Hz to 37 Hz |
Reproduction frequency characteristic | Fo ~ 20 kHz |
Max Input | 40W |
Rated input | 20W |
Output sound pressure level | 95dB/W/m |
Crossover frequency | 3.5kHz |
Qo | 0.35(fo:30Hz) |
Total flux | Woofer : 121,000 maxwell Tweeter : 11,000 maxwell |
Magnetic flux density | Woofer : 9,450 gauss Tweeter : 10,500 gauss |
Equivalent mass | 23.5gr |
Baffle opening | 215 φ mm or 263 φ mm |
External dimensions | Diameter 290 φ x Depth 115 mm |
Weight | 3.9kg |