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Unless this was a really poorly designed tweeter, would be quite unusual for both to go bad at the same time. Even with prior abuse, tweeters usually burn out instead of "going bad".
Yes the specs are way off. Surprised anyone would suggest these as drop in replacements. Even with close specs, swapping different tweeters will always be a complete crap shoot. Are stock tweeters available?
But, hey, if you can return the Peerless tweeters, what have you got to lose? Sounds like a fun way to spend a few hours.
Thanks so much for the responses, especially the crapshoot analogy! Yes, multiple posts saying this particular PSB series prone to tweeter problems/failure so I’m guessing that may be the case with this pair. Parts arrive tomorrow, I’ll try contacting PSB if I strike out. I’ve decided to be happy that I can still hear the difference at my age (65) no matter the outcome. Thanks again.
My replacement tweeter had the same DC resistance, same impedance at 1kHz, same efficiency and the same build (short horn), but result was strange. I verified phase using small battery and magnifying glass. New tweeter had more pronounced very high frequencies, but there was suck-out at lower treble. I tried them in opposite phase, just in case, and suddenly everything is fine. They sound little louder and cleaner and that was my objective. I've done it before to Paradigm Studio 60 and I failed in spite of extensive changes to xover . It is not as simple as it seems and perhaps in your case it is just dried ferrofluid, if speakers are over 10 years old (or less if played very loud). You can find ferrofluid at Parts Express, but have to be very careful separating voice coil. Best to find somebody who does it.