HITACHI/Lo-D HS-1400W
¥ 39,800 (1 unit, around 1970)
Commentary
A four way speaker system using the A. S. W. (acoustic super woofer) method.
The ASW has a structure in which the inside of the enclosure is divided into two large parts and a 20 cm cone type unit is contained inside. Sound is output from a port located at the bottom of the enclosure. This structure forms a band-pass filter that selectively passes only a specific frequency range and reproduces only the low frequency range.
The remaining 3-way unit is mounted on the other part of the split.
A 20 cm cone woofer is mounted for the low range and a 12 cm cone squaker is mounted for the middle range.
The H-54H horn type tweeter is installed in the high-frequency range.
The exterior is finished with walnut oil.
Equipped with multi-amplifier terminal.
Model Rating
Method | 4-way, 4-Speaker, ASW System, Floor Type |
Units, etc. | For Ultra Low Band : 20 cm Cone Type For low band : 20 cm cone type For Medium Range : 12 cm cone type For High Range : Horn Type (H-54H) |
Frequency band | 35 Hz to 20 kHz |
Instantaneous maximum input | 20W |
Impedance | 8 Ω |
Output sound pressure level | 98dB/W/50cm |
Crossover frequency | 100 Hz, 1.5 kHz, 5 kHz, 12dB/oct. |
Switching for multi-amplifier | 2 channels : (ASW), (Low / Medium / High) 3 channels : (ASW), (Low), (Medium / High) 4 channels : (ASW), (Low), (Medium), (High) |
External dimensions | Width 438x Height 1,157x Depth 370 mm |
Weight | 28kg |