Pioneer made an HPM150 and an HPM200 also. I'm old, I sold these at the very end of their retail life cycle.
The 40's were a bit more balanced than the 100's, but both could get edgy.... I've never measured the 40's, but the 100's were about 90db sensitivity up to around 1k, then rose 5 or 6 db above that, the mids & highs were quite a bit hotter.... I never got the impression from the 40's that they were that far off.
As far as selling, if they look great, you'll sell them, if you can find someone with a fond memory of these, you'll get a decent price, If not, its another cheap speaker. They manufactured from 1976 to 1979. I sold them in 79
The 40's were a bit more balanced than the 100's, but both could get edgy.... I've never measured the 40's, but the 100's were about 90db sensitivity up to around 1k, then rose 5 or 6 db above that, the mids & highs were quite a bit hotter.... I never got the impression from the 40's that they were that far off.
As far as selling, if they look great, you'll sell them, if you can find someone with a fond memory of these, you'll get a decent price, If not, its another cheap speaker. They manufactured from 1976 to 1979. I sold them in 79