Radio receiver `` Amethyst ''.
Tube radios.DomesticThe radio receiver "Amethyst" in 1958 was developed at the Riga State Electrotechnical Plant "VEF". The top-class radio receiver "Amethyst" is similar in design and electrical circuit to the radio "Kristall" of the same plant. The difference is in the case, the absence of EPU and in the used acoustic system. The acoustic system of the radio receiver consists of two low-frequency loudspeakers 4GD-1, installed on the left side of the front panel and connected in series, a mid-range loudspeaker 3GD-7, installed on the right side of the front panel, a high-frequency loudspeaker type VGD-1, also installed on the front panel in the middle and two loudspeakers VGD-1 or 1GD-9, installed on the side walls of the box, reproducing medium and high frequencies. In terms of characteristics, in addition to the range of reproducible frequencies, the receiver coincides with the characteristics of the radio. The range of reproducible frequencies of the radio receiver when receiving VHF-FM programs is 75 ... 15000 Hz.