Re: Old JCM-800 2X12 with G12T-75s...why do I love this cabinet?
On some of the amp forums you can find threads that describe some batches and sets of the early 75s as sounding much like 65s (there are actually several slightly different sounding versions of 65s too), and that there is a noticeable difference between those certain early 75s and late model 75s. The early 75s had a vent in the middle of the magnet that the later ones do not have if that means anything.
Like Jeff B, though, I had a set of 75s dated from 1987 in a 4x12 that I was not fond of. However, in a 2x12 they sounded much better. 4x12s have certain internal phase cancellations that reduce the mids a bit more than 2x12s.
I still have a pair of year 1987 75s that I will sometimes experiment with. I like them for some clean applications or to make a small cab sound bigger. After they aged, they did sound less harsh.
On some of the amp forums you can find threads that describe some batches and sets of the early 75s as sounding much like 65s (there are actually several slightly different sounding versions of 65s too), and that there is a noticeable difference between those certain early 75s and late model 75s. The early 75s had a vent in the middle of the magnet that the later ones do not have if that means anything.
Like Jeff B, though, I had a set of 75s dated from 1987 in a 4x12 that I was not fond of. However, in a 2x12 they sounded much better. 4x12s have certain internal phase cancellations that reduce the mids a bit more than 2x12s.
I still have a pair of year 1987 75s that I will sometimes experiment with. I like them for some clean applications or to make a small cab sound bigger. After they aged, they did sound less harsh.
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