They work great despite the one tweeter not working. There are scratches and imperfections in the acrylic. One speaker terminals were changed.These are very very heavy. About 1 acrylic is used for the cabinets. These were demo speakers built in the 70s just for hi end audio stores. Therefore, there are not many out there. Speakers do have minor flaws. One wire lead is separated from the tweeter. If you would like, you can listen to them to confirm they are working. I use them daily with a vintage Marantz setup.
If you are not a collector these are not for you. These acrylic hpm's are for the true collector that appreciates how rare they are. I would be keeping them, however my wife keeps telling me they are ugly because she can see through them. Otherwise, they would be my main system for years to come. The item "PIONEER HPM 100 VINTAGE ACRYLIC SPEAKERS SUPER RARE" is in sale since Monday, June 7, 2021.This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers". The seller is "deftech74" and is located in Malone, Florida. This item can't be shipped, the buyer must pick up the item.