I have a pair that are currently unsed. The Carvers and the Maggies made me do it!
Two pairs of HPM-100's recently recaped (what a difference for the better).
What a difference. More detailed, less fatiguing, tighter bass, snappier and a sound stage that has opened fifty feet. Best money spent after the power bill.
You guys are killing me as if I didnt have enough to do now I have to recap my HPM-100s and 2long4u who just scored a pair locally.It might sound like a cop-out, but I firmly believe that anybody who listens to HPM-100's and doesn't like them needs to hear a pair that has been recapped. The difference is not subtle at all. You never hear recapped HPM's described as fatiguing or boomy.
I guess that after twenty-eight years plus, the vast majority of HPM-100 crossovers are cooked. If you've got 100's with original crossovers, get 'em done! You won't believe what you're missing!
According to the schematics that I have, (SWN-158 and SWN-117) they are the same values. However, I would look at the crossover caps/boards and see what is printed on them to be sure (I know the 100/50 crossover boards have the values printed in silk screen).
Well, after posting above I dragged them out of the closet and put them up against my Dahlquist DQ-30s. And...the HPMs will be leaving soon. On half of what I tried, they sounded great, with a deep punchy bass (that didn't sound bloated like some state). On the other half, I couldn't stand the high-end, and I did something I haven't had to do in months, which is to take the tone controls on my pre-amp off of 'cancel'. I think the Dahlquists have spoiled me, and I just don't have room for these even though I still think they are fun speakers. Fun, yes, but I've been ruined I tell you...ruined.:tears: