Audio Database

The

Lo-D H-70HD 24,000yen(one-set, around the 1973 time)
\35,000 (one-set, around the 1974 time)

Description
 
The horn tweeter which began to delete one at a time from the aluminum round bar, and was made.

The plastic film is adopted as a diaphragm.


Rating of a mode
Form Horn form tweeter
Outer diameter 7.3cm
The diameter of an aperture 6.9cm
Baffle hole 7.4cm
The diameter of a voice coil 1.4cm
Rated input 20W (with the appointed network)
Output sound pressure level 104dB/W/m
Voice coil impedance 8ohms
Play frequency band 2kHz - 20kHz
Cut-off frequency 1.5kHz
fo 2.3kHz
Cross over frequency 3kHz or more
The total magnetic flux 101,000 maxwells
Flux density 11,300 gauss
Depth 15.9cm (17cm with an acoustic lens)
Weight 1.7kg (2.1kg with an acoustic lens mounting frame)
Adjunct Mounting frame
Acoustic lens