Pioneer HPM-40 Loudspeaker - On Demand PDF Download | English
vintage pioneer speakers HPM 40 | eBay
Found these first gen pioneer hpm 40's for free on craigslist. They look pretty good after cleaning, and all they need are new surrounds and possibly a new tweeter (one of the
Pioneer HPM-40 Bass Reflex Type Loudspeaker Manual | HiFi Engine