I recieved from my late grandpa this two Pioneer HPM-150 : r/audio
Pioneer Audiovisual - #PioneerVintageFriday The Pioneer HPM-150 are among the most famous vintage classic speakers. The "UFO" could be shown or hidden by a cover with smoked glass plate. It is a
PIONEER HPM-150 Vintage 1977 4Way Speaker High End RARE 250 W RMS WORK Good Look | eBay
PIONEER HPM-150 Vintage 1977 4Way Speaker High End RARE 250 W RMS WORK Good Look | eBay