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High Frequency Speaker Soviet-made 3GD-31, 5 GDV-1-8 . Revision and Repair of Vintage Acoustics Stock Photo - Image of panel, driver: 181940828
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Krasnodar, Russia - March 25, 2020: New speakers in a wooden case of a vintage speaker system. Repair of acoustic dynamics, ration soldering wire on t Stock Photo - Alamy
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