Audio Database


A backload horn type speaker system using BETA-8.

The unit uses BETA-8 which is a 20 cm cone type full range unit.

The enclosure uses a CW back-loading horn, which is a rear-loaded horn type with a constant lateral dimension from the throat to the opening of the horn. The horn flares by changing the longitudinal dimension of the cross section.
Cork with beautiful grain is used for wood.

A high adjustment terminal is mounted on the rear terminal.
If you need more treble, you can adjust it by removing the ground wire connecting the high adjustment terminal and negative terminal.

Model Rating
Method 2-way, 2-speaker, CW back-load horn system
・ Floor type
Units Used For All Bands : 20 cm Cone Type (BETA-8)
Impedance 8 Ω
Program source input 30W
Output sound pressure level 100 dB (New JIS)
External dimensions Width 400x Height 880x Depth 400 mm
Weight 30.5kg

BETA-8 rating
Playback frequency band 30 Hz to 20 kHz
Lowest resonance frequency 30 Hz to 45 Hz
Mechanical crossover 6kHz
Output sound pressure level 95dB
Impedance 8 Ω
Effective mass of vibration system 8.5g
Qo 0.5(40Hz)
Magnetic flux density 15,500gauss