Electro-Voice Interface:BII
¥ 135,000 (1 unit, around late 1970 s)
Commentary
Interface : A speaker system that uses the same unit as the AII but improves low-frequency playback.
The Interface : BII uses the same speaker unit as the Interface : AII and is housed in a larger enclosure to lower the tuning frequency of the low range radiator and further extend the low range.
A 20 cm cone woofer is installed in the middle and low range, and a 30 cm cone radiator is installed in the low range.
In addition to the passive radiator system in which a 20 cm woofer drives the radiator, Interface : BII achieves excellent low-range playback by having the radiator take over almost all of the lowest sound range.
Two 6-cm tweeters are installed in the high range.
One tweeter is mounted at the front and one at the rear, and a protection circuit with an indicator is added.
The enclosure is hermetically sealed.
SEQ equalizer capable of 6 dB booth is attached.
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Model Rating
| Method | 2-way, 3-speaker, passive radiator system ・ Floor type |
| Unit | Low range : 30 cm cone radiator For Medium Range : 20 cm cone type High Pass : 6cmx2 |
| Frequency characteristic | 26 Hz to 20 kHz 30 Hz to 18 kHz ± 4 dB |
| Output sound pressure level | 92dB/W/m |
| Impedance | 8 Ω |
| Maximum allowable input | 20W (long-term average) 200W (peak) |
| Crossover frequency | 42 Hz (acoustic), 1.5 kHz, 8 kHz |
| External dimensions | Width 406x Height 734x Depth 267 mm |
| Weight | 19.1kg |
| Attachment | SEQ equalizer |