Vintage BOSE Speakers Interaudio alpha 3 a3, 15 to 150 watt MADE IN USA, 3-WAY BALANCED, fully tested, sounds AWESOME! for Sale in Los Angeles, CA - OfferUp
Bose Interaudio Alpha A1 Speakers For Sale - US Audio Mart
Speaker test (FM radio) - Interaudio Bose - Syncom tested - model IA 1000 - refoamed - YouTube