Bose 501 Series II, grille removed, showed angled tweeter array. Far better than their new speakers! | Bose speakers, Vintage electronics, Vintage speakers
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Pioneer HPM 110 Vs Bose 501 + Pioneer Urushi C90 M90 on Tony Joe White - YouTube
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Bose - 501 Series V - Högtalarset - Catawiki
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HÖGTALARE, ett par, valnöt, Bose 501, USA, 1977. Övrigt - Modern Teknik & Elektronik - Auctionet