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How is a sound system built that works in chapels, churches and similar large rooms, designed to amplify speech? About radio transformers and minimizing losses in transmitting acoustic power signals. The exhibit was donated by a fan of the series, thank you! :) I invite you to support my channel: https://patronite.pl/smialekadam PayPal.Me/smialekadam https://www.paypal.com/paypalme/smial... and to subscribe: https://www.youtube.com/AdamSmialek/?... #Akord40 #Polkat #radiowezeł