Thiel Owners

quick follow up on my previous post regarding CS 3.5 midrange replacement drivers.  Perusing the Madisound website, they have this https://www.madisoundspeakerstore.com/approx-5-midrange/scan-speak-13m-midrange-replacement-speaker/ which is probably closer to the original Scanspeak midrange found on the 3.5s, and it has the custom mounting plate.  The 12W/8524G speaker that I have in my 3.5s will fit, but its a 4 screw mount, as opposed to the 3 screw mount with the flange.  From Madisound website regarding the 10F/8424G replacement...." The specifications and response curve of the 10F/8424G is very close to the original and long discontinued Scan-Speak midranges. PBN Audio uses these as replacements for the 13M/8636 in their legacy speakers and speak glowingly of the results."
There seems to be a significant difference in the curves for these speakers.  I guess the thing that makes the 12W/8524G speaker attractive is a price of @$60 vs $220 for the 10F/8424G.  Unfortunately what I don't have is the curve for the original midrange Scanspeak driver.

bluetone

Thank You for the follow up regarding the 3.5 loudspeaker. Hopefully, you will find  a curve for the original Scanspeak driver.  Good to see you again.  Happy Listening!

Over time I am gradually piecing together bits of information. I hope to eventually find those driver curves, but don't have them yet.

I think I may have found something here. Maybe someone could take a look and see if this could be the original mid for the 3.5, Scanspeak 13M/8640 . Here is a link to the spec sheet, https://www.scan-speak.dk/datasheet/archive/13m-8640-00.pdf
Or, this version, 13M/8636 with kevlar cone as opposed to paper in the 8640 linked above.  http://www.scan-speak.dk/datasheet/archive/13m-8636-00.pdf

Unfortunately I’m at the beginning of my learning curve, so maybe someone could chime in with an informed perspective. Thanks

They were paper cone, not kevlar.