I've got a nice set of JBL 2212 alnico woofers sitting around waiting for a purpose. Audibly, they are excellent drivers with smooth sounding FR well into the upper mids. I don't have other specs on them. Any JBL gurus out there with more info on these?
https://audiokarma.org/forums/index.php?threads/jbl-2212-woofer-thiele-small-parameters-help.740485/
They were used in the JBL 4310, the thread above says specs are fairly close to the 2213:
I remember them as a good sounding speaker.
They were used in the JBL 4310, the thread above says specs are fairly close to the 2213:
I remember them as a good sounding speaker.
Thank you guys. They.measure about 30hz Fs. The JBL resources I've found say the 2212 is basically a 123A with alnico motor and the 2213H is a 123A3 with ceramic motor. A Qts of 0.5 is what I vaguely recall. The VCs on both versions are edgewood copper. The Aquaplas coating is yellowed from the surround coating bleeding through. I have extra coating to touch it up, but don't want to push sensitivity down further. I also wanted to verify the alnico magnet health state. Usually the Qts will up with a weaker motor. In the past I've removed hardened surround coatings with Isopropyl and recoated with an aqueous latex solution. These woofers never were repaired to my knowledge.
