Electro Voice Interface Alpha
Data
General
- Manufacturer: Electro Voice
- Model: Interface Alpha
- Years of manufacture: ca. 1981-1982
- Manufactured in: Nidau/Switzerland
- Colour: walnut or oak veneer
- Dimensions: 625 x 390 x 210 mm (HxWxD)
- Weight: 14 kg
- Original price approx.: 1950,- DM (pair with equalizer)
Technical data
- Type: 2-way, closed with passive radiator, shelf / floorstanding speaker
- drivers:
- woofer: 1x 305 mm (passive cone).
- midrange / bass driver: 1x 203 mm
Tweeter: 1x Super-Dome 38mm dome with acoustic lens
- Power handling (nominal/music): 25W / 250W max.
- Efficiency:
- Sound pressure:
- 92 dB (1 m/1 W input).
100 dB peak (3.6 W input) 108 dB peak (25 W input) 118 dB Peak (250 W Peak Input)
- Frequency Response:
- 30 - 18,000 Hz (±2.5 dB).
29 - 20,000 Hz (DIN)
- Transition Ranges: 49 Hz (Acoustical) / 1,500 Hz (Electrical).
- Dispersion angle:
- 125 degrees (±30 degrees) at 500 - 8,000 Hz.
75 degrees (at 12,500 Hz)
- Impedance: 8 ohms (nominal) / 5 ohms (min.)
Special Features
- Successor of the Interface A, with new tweeter.
- Difference to the Beta => designed as a shelf speaker, arrangement of the systems in the cabinet
- stand BBR-2, to use the speaker as a floorstanding speaker
- external equaliser (made in Nidau CH-2560) to attenuate the treble: slope 0/-3/-6 dB above 10kHz
- dimensions: 205 x 65 x 155 mm (WxHxD)
- Distortion max. 0.005% (20-20.000 Hz, 1V)
Remarks
- Other models in the same series:
- Electro Voice Interface Beta
- Electro Voice Interface Gamma
- Electro Voice Interface Delta
- European-made Interface Alpha is largely the same as the American-made Interface A series 3.
(power supply of the equalizer however 220V instead of 110/120V)
Pictures
Reports
Tested in German HiFi magazine Stereoplay 5/1981 (one of the four test winners)
Links
- data and pictures at HiFi Studio