Mysterious sound system. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Speakers
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The Englishman D. Gough made an original acoustic system. The speaker box can be made from planks or 1/2 inch thick plywood (Figure 1).
The top cover of the box can be fixed in the most advantageous position in terms of sound. Sound is emitted by bouncing off the lid of the box, set at a certain angle, through "windows" in the side walls of the box. The speaker system has one loudspeaker with a cone with a diameter of 8 inches (203 mm).
The frequency range reproduced by the loudspeaker is 40-16 Hz. The article states that the acoustic system, as it were, expanded the band of reproducible frequencies, and there was no resonance within the entire sound range. One music lover found a slight resonance in the lower register, which was eliminated by the introduction of a 000x24 inch absorber made of 24 inch glass wool into the box.
A loudspeaker with a cone diameter larger than 8 inches can be used in this system, but in this case, the depth of the box must be increased accordingly.
Author: D. Gof; Publication: N. Bolshakov, rf.atnn.ru
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