One 10 Pioneer HPM-40 60 WOOFER SPEAKER, 25-737A - tested [1102120057] - $24.00 : EdsGoodStuff, it's all good
pioneer hpm 40 Woofer 25-737A Lot of 2 vintage pioneer speaker | eBay
Could use some refurb advice (Pioneer HPM-40) : r/vintageaudio
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