Interested to hear what people's impressions are of these. Looks like you can get a solid 95 out of the thing and smoother than usual, albeit high-Q.
F12M-150 Triple Cone - Celestion
F12M-150 Triple Cone - Celestion
It's a guitar speaker for an open back cabinet with a rising top end (+5dB). I doubt it will be good for hifi applications, and probally will only work a bit on an OB with a helper woofer and tweeter for hifi. 12K is to low for hifi, and 60Hz not low enough to have real bass. But feel free to try if you think it can be good.