arficus

Just did my first recones - couple of Jensen P15LL. The surround/suspension on these all paper aftermarket cones seem substantially stiffer than OEM. I know they will break in (and I have been pumping them with ~50hz for a while), but even with this I think they will be overly stiff. Anyone have any suggestion for loosening them up? Like a chemical that very mildly degrades cellulose?

Any sonic differences between older and current production. Considering possibility of using one of each. Older one has push terminals (vs solder tabs) and judging from packaging is likely circa 1980s? I have seen posts showing some differences in frequency response between different iterations of these, but this was up past 6khz, and I'll likely be crossing around 4khz. So, wondering if they'll sound different otherwise...

Yes, thank you.

Well, that's the first time I've seen someone opine that the atlas actually sounds superior to 250-X. This is the type of opinion I was seeking before ordering. Can't always get what I want...

Glad to hear that. It seems several people around here have toyed with this driver, and while I have read some opinions declaring it not a great candidate for K55 replacement due to freq response, I haven't read anyone decrying its overall sound - fairly remarkable for a $35 driver. I'll check in with my impression in a few days.

I gambled and ordered a pair of JBL 250-X (only $75). Guess I'll try the Atlas if they don't please me. Thanks.

Oops, I just commented about that above - yes, I'm active. And thanks for the diaphragm suggestion, I'll look into that.

That's what I'm here asking advice about - which driver to use for mids. I have 5-6 amps powering drivers and fairly flexible xovers to work with, so I think I could get any impedance to work.

Why? Because of a desire to keep them original or because you believe the Jensen's sound better? I know the Jensen RP302 tweeters in these things command much respect, but have never seen glowing reports re the mids. Either way I'm quite reticent to buy drivers for which diaphragms aren't available. Inspection of my failed one reveals dry rot was at least partly to blame for its failure. These are all very old drivers at this point.

From website: "(Out of stock. New stock expected perhaps March 2021. Blame this crazy virus.)"

Please forgive the non-specific Klipsch question, but my online searching seems to indicate that you folks might be the only ones that have the experience to help... I have Jensen Imperial corner horns, ca 1950's, originally crossed at 600Hz and 4kHz. I blew a mid (diaphragms no longer available) and thought it might be improvement to try larger horn. I bought Altec 511B and Great Plains Audio 909A (altec clone), but it was readily apparent this combo was severely lacking below 1kHz. On a different forum I was told that 1" ferrite altec drivers are not loaded properly by 511s and are generally only good for 1.2kHz. Can't currently afford vintage alnico altec, so here I am, looking for relatively inexpensive alternative. PD-5VH and D250-X seem like obvious options? The only place I could find discussion of the former is here, and there seems to be a fair amount re latter as well. The main complaints I've seen here about D250-X is its lack of extension to 6k. I'm aiming far lower. So, I'm wondering: 1) Aside from its better frequency response, is the Atlas a clearly better sounding driver? (If not I'd be happy to save $225 w/JBL's) 2) Is there another possibly better option I'm overlooking? Thanks