I really like trying out different speakers, and the recent acquisition of a '66 Ampeg Jet presented yet another opportunity. It came with an Eminence GA-SC64 in it. The amp sounds great with that speaker. Nice character and grit. But I am always seeking more clarity, and so I thought I'd try out something else. That something else is a Tomo Fujita signature speaker by Eminence. These are not produced as comparable speakers, but since I've spent some time with the GA-SC64 both in a '76 Deluxe Reverb and now in a '66 Ampeg Jet, and since I've now heard the GA-SC64 and the TF-1250 in the same Ampeg Jet J12D, I figured I might make some notes on what I'm hearing (despite the fact that the TF-1250 is not yet broken in). Here's the GA-SC64 Here's the TF-1250 And now side-by-side: Specs of both here: https://www.eminence.com/pdf/TF_1250.pdf https://www.eminence.com/pdf/GA_SC64.pdf You'll notice the obvious differences between the two: paper dust cap versus felt. Different ribs, going in different directions. Similar doping, but different gasket. Seamed cone versus pressed cone, with different types and thicknesses of paper. And as the specs show, different sized magnets (GA-SC64 is 38 oz, while TF-1250 is 30 oz.), different voice coil diameter (GA-SC64 is 1.75", while TF-1250 is 1.5"). The GA-SC64 is rated at 40W, while the TF-1250 is rated at 50W. In comparison with the GA-SC64, the TF-1250 is leaner and tighter in the bass, and smoother in the midrange and top. While the GA-SC64 has a bit more grit and character, its midrange profile is more like a Celestion Greenback (or the Eminence GB128), it seems, in the top end, but it has lots of bass. The TF-1250 was designed by Tomo Fujita, along with Eminence, to be his modern take on the Jensen C12N, and so far I actually think it does a very good job of that. It has chime and clarity, but it is not shrill or really even bright. I cannot yet comment on its breakup characteristics, as it's not broken in yet. The Eminence GA-SC64 excels at modern breakup. These are both great speakers, but to my ears, I prefer the TF-1250 in this amp (and I'd imagine in others, too). The TF-1250 retains the main spirit of a Jensen C12N, but without the potential at getting shrill, and with the addition of some detailed but smooth upper midrange and some lean, tight bass. From the 1.5" voice coil to the thickness of the paper to the paper dust cap to the seamed cone to the smaller magnet, it seems to me that the TF-1250 is in every way a better "modern" take on the spirit of a vintage Jensen C12N. It's not that the GA-SC64 is a bad speaker; I am simply surprised that so many folks talk about it as a modern take on the C12N. To me, it sounds almost nothing like a C12N. Too much bass, too congested in the midrange, not the "right" frequency in the highs to replicate an old Jensen, and breaks up too well. The point of all this is not to slag on the GA-SC64, which is a great speaker in its own right. It is simply to express how well I think the TF-1250 does at delivering what the GA-SC64 claims to do, according to the advertising ("sound circa 1964"). And one more thing: There was some conflict in some of the initial description of the TF-1250 as a lower efficiency speaker, since the SPL was listed as 101.3 dB. By comparison, the SPL of the Eminence GA-SC64 is given as 100.5 dB. I do not have an SPL meter, but there is no way that the TF-1250 is a 101.3 dB speaker. I have had many efficient speakers by Eminence, from the GA-SC64 to the JS-1250 to the GB128 to the 12" Red Fang alnico. The JS-1250 and the GB128 are loud speakers. I have not compared those to the TF-1250 in the same amp, but this TF-1250 is not as loud. I don't even think it's as loud as the GA-SC64. That's another respect in which it's more vintage-Jensen-like than other modern speakers. So far, I've not yet heard a modern ceramic-magnet speaker that captures the essence of that chime without being shrill as well as the TF-1250 does. After hearing it, I'm surprised there is not more talk about this speaker. It is an excellent speaker, and I hope it garners more attention.