Brown LE1
The Braun LE1 (loudspeaker unit 1) was the first loudspeaker with an electrostatic functional principle to be offered on the German-speaking market . The technology was licensed by the British Acoustical Manufacturing Co. Ltd./Huntingdon ( QUAD ), which previously brought the ESL57 onto the market.
The external design was done by the designer Dieter Rams .
The market launch took place around 1959, and the license allowed sales only in Germany, Switzerland and Austria. About 500 pairs are said to have been built. The production took place until 1966. Today (2013) loudspeakers are offered again that are built under Rams license.
The inner workings are essentially the same as the ESL57, but there are some differences. While the stators are identical, the transformers and the high-voltage cascade were specially developed by Braun.
The LE1 could be connected to the following Braun tube amplifiers using a 4-core special cable (audio signal and 220 volt supply): CV 11 (from the Studio 2 modular system), CSV13 and CSV60.
One advantage of these loudspeakers is the very transparent sound, singing voices and individual acoustic instruments (e.g. piano or violin) are reproduced very realistically. Relatively weak bass and the pronounced directional effect are disadvantageous.
The loudspeaker system consists of two woofers and one mid-high system with crossover frequencies at 250 and 5000 Hz.
- further data
- Frequency range: 45 - 18,000 Hz +/- 3 dB
- Beam angle: horizontally 70 degrees, vertically 15 - 30 degrees
- Load capacity: 15 watts
- Impedance: Z = 15 ohms
Individual evidence
- ↑ Archive link ( Memento of the original dated November 9, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
