I have a variety of speakers for my '70 SFTR including a set of 70s Rolas and a set of Warehouse G12Cs, which are the wrong impedance (16 instead of 8). I really like the Jensen sound, which the G12C is supposed to replicate. I'm considering buying a 15 year old pair of Jensen C12Ns. Any experience with modern Jensen in Twins? I believe they're OE in the reissues.