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Bose 501 Series II, grille removed, showed angled tweeter array. Far better than their new speakers! | Bose speakers, Vintage speakers, Vintage electronics
Bose 501 Series I Speakers | Audio-Ho-Ho
Bose 501 Speaker review
The Speaker Spotter – Speakers of Craigslist – April 11th, 2014 | RETROVOLTAGE
VINTAGE WOOD BOSE 501 Series IV (Pair) DIRECT / REFLECTING SPEAKERS (Read) | eBay
Bose 501 Speaker review
Bose 501 Series I Speakers | Audio-Ho-Ho
Vintage BOSE 501 Series IV speaker set - NICE ! | Reverb
Bose 501 Direct/Reflecting Speaker System Manual | HiFi Engine
Vintage Bose 501 series II : r/vintageaudio
Bose 501® Series V / Bose 701® Floor-standing speakers at Crutchfield