Audio Database

The

GOTO UNIT SG-17TT/A 115,000yen(one set and February, 1978 or subsequent ones)
125,000yen(one set and May, 1979 or subsequent ones)

Description
 
The horn type tweeter unit which changed and changed the diaphragm into the titanium dome and the Mylar (FRP) edge based on SG-17PS

The horn part is a hyperbolic curve with the hole-was-made structure about the aluminum round bar, and is united with the driver. By this horn, the perfect horn loading started the diaphragm and the air impedance is uniformly applied to all the frequencies.
Moreover, by A type, the horn is changed and the cut-off frequency has become 2.5kHz.

The edgewise volume voice coil which used the aluminum ribbon line is adopted as a voice coil.

The permendur is used for a magnetic circuit.


Rating of a mode
Scheme Horn type tweeter unit
Music power 5W
Impedance 8ohm-16ohm
Sound pressure level 113dB
Frequency characteristic 2.5kHz - 25kHz
The total magnetic flux 350,000maxwell
Flux density 23,000gauss
The optimal crossover 4kHz or more
Gap synopsis Permendur
Horn SG-17 TT:S-2000,Aluminum round bar
SG-17TTA:S-2500
Diaphragm Titanium FRP edge
Dimensions Diameter 125x depth of 150mm