Elegy 102 01 stereo. Redesigned column from the inside

A very, very trashy thing a long time ago, back in Soviet times, we had a stereo system. Player + radio "Elegy - 102 stereo". But all this was catapulted by our ancestors a long time ago.

However, columns from this whole affair remain. Perhaps the most survivable technology is the acoustic system. I don't remember it ever being buggy. Well, in short, despite the tenacious acoustics, this Soviet elegy was then produced much better than now, and there is no doubt about it. It is able to pass and withstand even more load than required. These speakers, if I’m not mistaken, are already 28 years old, and they still work without any problems. And they are made superbly. Nowadays you will hardly come across acoustics whose body is made of wood. Although no, of course there are now made of wood, otherwise they would simply produce poor-quality sound, or rather the plastic would ring. But just like this, not only is the wood not hidden under black plastic, as is done now, but it is also varnished. The speaker has 2 speakers. 1 main, responsible for low and high frequencies, 2 purely voice. Their total power is 9 W. But the lower one itself can take on about 16 W of power. At least that's what the instructions say.

Video review

Checking the column from "Elegy 102"

Melody 104-stereo radio block

The Tale of Ivan the Self-Made Man, Empatric Gusli and Loudspeaking Decks

Once upon a time there lived Ivan the self-made man in the glorious city of Kostroma.
And then one day his brother-in-law, his wife’s brother, came to Ivan. He came and said: Oh, you goy, my relative Ivan, help my drop-dead misfortune! I have empatric harps, but they are only audible to me. I can’t, good fellow, invite red girls to a dance party, I can’t stretch my frisky little legs!
And make me, Ivan the self-made man, loud-speaking, actively singing decks!

Ivanushka became thoughtful and became confused. Ivan had speakers from “Elegy 102”. And Ivan had a hot soldering iron, clean hands and cold calculations. There is nothing to do.
Ivan the self-made man said: I will remake for you, brother-in-law, my wife’s brother, my Elegy into actively singing loud-speaking decks. Soon the fairy tale will be told, but not soon the deed will be done!

Ivan took the Basurmansky TDA2030A microcircuit, and hung it in our own way, and in a unipolar way.
Yes, I replaced a couple of droning speakers. Empetrish harps were chained to the entrance of the decks.
So it became like a disco at my brother-in-law’s place.
And Ivanushka the self-made man says: hey, brother-in-law, brother-in-law, my friend, have fun! And when you burn the infidel microcircuit, come again. After all, I have up to a dozen of them!
And I was there, poisoning the board.
The rosin flowed but didn't get into my nose...

(C) 2008 Fairy tale written by Igor Kotov

Idea

One fine day, my wife’s brother (a 14-year-old guy) came to me and said, I want the speakers to play from my MP3 player. I scratched my head and said, okay, it will be.

We began to think about what and how. My gaze fell on the Soviet speakers “Elegy 102”. They look beautiful, sound good, and for MP3 they don’t need anything better.

An autopsy showed that the insides of the speaker are simple: HF - 3GD-3, LF - 6GD-6, HF is fed through a 1 µF capacitor. They decided to replace the LF with 25GDN-3-4, and leave everything else alone.

A simple TDA2030A circuit was chosen as an amplifier

Main characteristics of TDA2030A

Scheme of unipolar connection of TDA2030A in the amplifier

Amplifier parts used

Why these MCs? Because I once bought 15 pieces and now I’m slowly collecting them. Since everything should be played from an mp3 player, it was decided not to bother with the volume control, although it was possible to simply install a variable resistor.

View of the assembled board

Redesigned column from the inside

The finished blocks, as you can see, are located on the sides of the body.

The amplifier is powered by a transformer with one secondary winding of 22V, this is quite enough.

Rear panel

The rear panel turned out to be ascetic - only a connector for the power cable, a switch and a jack for connecting a second speaker.

Personal impressions

What impressions from the work: they play perfectly, there is no background! Which is surprising, because I did not shield the amplifier blocks. Once upon a time, somewhere I read that unipolar activation of this MS kills the sound - don’t believe it until you do it yourself and understand.

A little bit of tar!

But there is always a fly in the ointment - the walls of the housings are too thin (10-12 mm), and at high volumes they begin to ring.

But in general - one evening of work and the active monitors are ready.

Elegy 102 stereo

First class stereo radio Elegy 102 stereo produced since 1981 by Murom RIP.

The radio is made entirely of semiconductor devices, which increases its compactness and reduces power consumption.

Radiola Elegy 102 stereo consists of 4 separate blocks: a radio receiver, a player and 2 loudspeakers (AS).
Blocks can be arranged in the most convenient combination.
The radio receiver operates in the following bands: DV, SV, HF and VHF.
In the VHF range it is possible to receive stereo broadcasts.
The receiver is equipped with a fixed tuning for 3 radio stations in the VHF range.
3-speed ECU is capable of playing mono and stereo records.

Main technical characteristics

Sensitivity, µV in the ranges LW, SW, HF - 150, VHF - 5.
Rated output power in each channel is 2x6 W. Maximum 2x20 W.
Power consumption when receiving 45 W, when playing recordings 55 W.
Audio frequency band in the AM range is 63...4000 Hz, FM - 63...12500 Hz.
Receiver dimensions 624x318x171 mm, player 316x409x170 mm.
Total weight - 30 kg.
Price - 310 rub.