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 speakers | Audio equipment, High end audio, Vintage speakers
Pioneer - Hpm 40 – Aux 33 Tours
Pioneer HPM-40 Bass Reflex Type Loudspeaker 1976-79 | Reverb Canada
Pioneer HPM 40 | Reverb
Vintage Pioneer HPM-40 (A Version) Speakers - On Hold Photo #2122039 - US Audio Mart
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Used hpm 40 for Sale | HifiShark.com
PIONEER HPM-40 SERVICE MANUAL Pdf Download | ManualsLib