Electro Voice Interface Beta
Contents
Data[edit]
General
- Manufacturer: Electro Voice
- Model: Interface Beta
- Years of manufacture: ca. 1981-1982
- Manufactured in: Nidau/Switzerland
- Colour: walnut or oak veneer
- Dimensions: 775 x 405 x 280 mm (WxHxD)
- Weight: 19 kg
- Original price approx.: 2800,- DM (pair with equalizer)
Technical data
- Type: 2-way, closed with passive radiator, floorstanding speaker
- drivers:
- woofer: 1x 305 mm (passive membrane)
- midrange / bass driver: 1x 203 mm
Tweeter: 1x Super-Dome 38mm dome with acoustic lens
- Power handling (nominal/music): 25W / 250W
- 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 - 18000 Hz (±2.5 dB).
26 - 20000 Hz (DIN)
- Transition Ranges: 42 Hz (Acoustical) / 1500 Hz (Electrical)
- Coverage angle:
- 125 degrees (±30 degrees) at 500 - 8000 Hz.
75 degrees (at 12500 Hz)
- Impedance: 8 Ohm (nominal) / 5 Ohm (min.)
Special Features
- external equalizer to attenuate the treble radiation: slope 0/-3/-6 dB starting at 10kHz
- successor of the Interface B, with new tweeter
- difference to the Alpha => integrated stand, arrangement of the systems in the cabinet
- external equalizer CH-2560 to influence the treble filter slope (0/-3/-6 dB from 10kHz)
- dimensions: 205 x 65 x 155 mm (WxHxD).
- distortion max. 0.005% (20-20000 Hz, 1V)
Remarks[edit]
Other models of the same series:
Interface Beta, manufactured in Europe, is largely the same as Interface B series 3, manufactured in America. (power supply of the equalizer however 220V instead of 110/120V)
Pictures[edit]
Reports[edit]
- Tested in German HiFi magazine Stereoplay issue 6/1982