Vintage Speaker Service - First generation 301 Series by Bose. By using direct sound and reflecting sound at the same time Bose tried to simulate a natural spatiality like in a real
Bose 501 Series ii, Vintage Loud Speaker System - Tested | eBay
Stereo Speaker - Support
Vintage BOSE 501 Series IV speaker set - NICE ! | Reverb | Vintage, Bose speakers, Sounds great