
fenderplucker wrote:Hi Dave,
As far as I can tell the first AC15 that used by Hank from July 1959 to June 1960 was cream, TV front and had the bolt in chassis and 1st circuit version. This used a 12AX7 in the input, not the EF86. These amplifiers were swapped for the two tone 2nd circuit version that did use the EF86 in June 1960. So I'm afraid that your claim about the EF86 does not quite stand up.
I think that the main difference in the EF86 and 12AX7 channels in later AC30's is due to the different tone stacks rather than the valve type. The EF86 channel in the later AC15's and AC30/4's had a flat mid range with maybe some top cut or boost, depending upon the circuit, whereas the top boost channels that used a 12AX7 had a mid range scoop. Interestingly the non top boost AC30/6's also used a 12AX7 but had simple tone controls like the AC15's. They sound more like the AC30/4 but have lower gain and sound a bit duller accordingly.
Finally, some time ago I wired up a two channel test preamp that had an EF86 in one channel and 12AX7 in the other. The gains were very closely matched and there were no tone controls at all. Nobody could tell which was which when I switched between them, lending support to my idea about the greater importance of the tone shaping networks.
Regards,
Paul.
Gary Allen wrote:I heard Knopfler got the desk out of studio 2 (Abbey Road) and still uses it occasionally....gary
roger bayliss wrote:Gary Allen wrote:I heard Knopfler got the desk out of studio 2 (Abbey Road) and still uses it occasionally....gary
From what I understand there are at least 3 REDD 37's around and some REDD 17's and Toe Rag Studios has definetely got the REDD17 which was installed around 2005 I believe. The REDD 51's not sure if there are any of those around. These are the desks that set out the famous sounds that became Abbey Rd as well as the outboard gear like the Fairchild Compressor and extra EQ units employed and designed inhouse by EMI back then.. legendary valve stuff..
I wonder if we could afford to get one of us down to Toe Rag Studio's with say one of the Meazzi's and a decent ef86 Vox and strat and try it on say one of the early tunes see if it's achievablewonder how much they would charge for the studio to do one tune
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Anybody up for it
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