Pioneer PW-A20

Commentary

A series 20 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	20 cm Cone Woofer
Impedance	8 Ω
Lowest resonance frequency (fo)	28 Hz to 42 Hz
Reproduction frequency characteristic	Fo ~ 4 kHz
Max Input	20W
Rated input	10W
Output sound pressure level	94dB/W/m
Crossover frequency	4 kHz or less
Qo	0.3(fo:35Hz)
Total flux	99,000maxwell
Magnetic flux density	10,700gauss
Equivalent mass	16gr
Baffle opening	172 φ mm or 211 φ mm
External dimensions	Diameter 234 φ x Depth 102 mm
Weight	2.5kg