Vintage audio: vinyl electrophone Riga Akkord. Made in USSR
Electrophones network transistor “Akkord” and “Akkord-201” has been produced by VEF radio plant together with the Radio Engineering PTO, and the Chelyabinsk Radio Plant since 1969 and 1973. The 2nd grade electrophone “Chord” (IIEF-69) consists of the EPO “II-EPU-40 ” with three rotation speeds of the disk 78, 45, 33 rpm, the transistor amplifier and the remote acoustic system, in which one broadband loudstreamer of 4GD-28 is installed.
The electrophone is designed for high -quality reproduction of ordinary and long -playing plates of all formats. The electrophone can be used with a radio receiver and a tape recorder with a small output power or a narrow -band acoustic system to improve quality, as well as sound volume.
The electrophone allows you to listen to the transmission of the broadcasting network, and in combination with the coil or cassette tape recorder, make an entry from the plate to the magnetic tape. The pipe-based soundtrack has a swivel monophonic piezoramramic head of the GZK-661 type, with two corundum needles for long-playing or ordinary records.
Squid sensitivity – 50..100 MV per cm/s, lower boundary of reproducible frequencies 45 Hz, upper 14000 Hz. The electrophone has a volume adjustment and Tembera NF, PF. The nominal output power of the electrophone is 1.5 watts, with a book ~ 3%. The operating frequency strip for sound pressure is 80 … 12000 Hz with unevenness at the edges of the range of 14 dB.
Power supply from an alternating current network. The power consumed from the network during EPU is 25 W, an amplifier of 10 watts. Dimensions of AC 363x270x122 mm, electrophone 392x315x158 mm. The weight of the set is 9 kg.
Since 1973, the PTO ‘Radio Engineering’ and the Chelyabinsk Radio Plant produced the modernized electrophone ” Akkord-201 ” (type II-EF-1M) is distinguished by a new EPU, a loudspeaker in the speaker system and small changes in its external design.
