What were the 5.25” like? I have a set of these ready to fit, but concerned mid bass could be lacking.It's a really good deal for the performance they offer. The original Alpine replacements were $17 per tweeter from Pac-Parts when the Alpine SPX-13PRO & SPX-17PRO component sets were first released.
I also picked up pairs of the 6.5" and 5.25" SPX-PRO mids from Pac-Parts back then, too. IIRC, they were $54 & $47 each respectively. The complete retail boxed component sets with XOs, grills, and mounting hardware were $699 or $799.
People complained that the 6.5" drivers lacked midbass output. Never understood that claim! At the time I was running them in well-deadened & sealed front door locations with a HPF of 40Hz @ 12dB/octave and they were impressive! The phase plug worked extremely well to dissapate heat. My subwoofer setup was at 30Hz @ 6dB/octave with phase reversed. The 6" mids had excellent midrange response as well.
I still have the 5.25" & 6.5" drivers. I'd love for Erin to test them on the Klippel just to see their performance on paper, but there's really no point as these are no longer available.
But it'd be interesting to see tweeter measurements on this latest eBay batch. I still have the original Alpine tweeters as well, which would be a good comparison.
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