Created on 01.24.2007 15:14.
Updated 02.28.2020 15:31.
Author: A. Terskov.
For this purpose, two opposite sectors of 90 degrees each are removed from it (see Fig.) The parts to be removed are carefully cut out with a thin sharp scalpel so that no paper flakes and separate threads remain on the cut. Smear the edges of the holes with vibration-absorbing mastic
By this refinement, it is possible to lower the resonant frequency to 60 Hz. All operations are performed through the windows of the diffuser holder for disassembling the head.
The small dimensions of the 20GDS-4-8 head make it possible to use it in small-sized acoustic systems as well. According to a subjective assessment, a two-way acoustic system with a volume of 8 liters, made in the form of a VI, in which, modified by the method described above, a mid-frequency dynamic head 20GDS-4-8 and a high-frequency head 3GDV-1-8 (the old name 2GD-36) are used, quite satisfactorily reproduces both higher and lower sound frequencies.
Obninsk, Kaluga region
- Effrucy M., Reducing the resonant frequency of heads. Radio, 1975, no. 3, p. 35