Pioneer PAX-30F

Commentary

F-series 30cm2-way coaxial speakers announced after the PAX-20F and PAX-25F.

Both woofer and tweeter have a coaxial structure with a completely independent magnetic circuit and voice coil.

A 30 cm cone type woofer is used for the low range.
A Cross Edge cone has been adopted for the cone part. Cloth is used for the edge part of the cone and a special damping agent is applied to lower the reproduction limit of the low sound range.
The voice coil is made of lightweight aluminum wire and has a wide winding width to minimize non-linear distortion. This ensures that the voice coil receives a constant driving force and reduces distortion.
For the damper, I am going to use the one with large and loose corrugation.

A horn type tweeter is used for the high range.
A diaphragm made of super-heated polyester resin is used for the vibration system.
The horn section uses an aluminum die-cast rectangular opening extrusion horn, which is installed in a vertical position to increase horizontal directivity. The horn opening is offset from the axis of the woofer cone to reduce distortion caused by interference.

Since the high-frequency attenuation characteristic of the woofer is sharp, only a 12dB/oct. network is inserted into the tweeter side.

Light alloy casting is used for the exterior.

Model Rating

Type	30cm2-way coaxial speaker
Input impedance	8 Ω, 16 Ω
Lowest resonance frequency	23 Hz to 32 Hz
Reproduction frequency characteristic	Fo ~ 16 kHz
Max Input	35W
Rated input	25W
Output sound pressure level	102dB/W
Equivalent mass	38g
Qo(fo=27Hz)	0.43
Crossover frequency	2.5kHz
Total flux	Woofer : 194,300 maxwell Tweeter : 25,000 maxwell
Magnetic flux density	Woofer : 9,500 gauss Tweeter : 10,700 gauss
Mounting Hole Dimensions	330 or 280 mm
Baffle opening	296 or 260 mm
External dimensions	Diameter 342x Depth 251 mm
Weight	4kg