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Post by abstamaria on May 29, 2014 15:46:14 GMT
Pardon my ignorance, but was the EF86 valve in any of the amps that Hank used?
Many thanks,
Andy
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Post by somebodyelseuk on May 29, 2014 16:09:00 GMT
Early AC15s, I think. maybe even AC30s. I think the Matchless DC30 might have a channel with 'em, as well. I've a feeling Vox and a lot of others stopped using tehm back then, because they're prone to microphonics and not very reliable... but I might be confusing them with another type?
Cheers, Julian
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Post by Charlie Hall on May 29, 2014 18:41:21 GMT
Hi Andy,
Yes, Julian has it about right. To be more precise, and on more than one Vox model, one channel had the EF86, the other channel did not. Between just the first two versions of the AC15, one had the EF86 for the tremolo channel (where tremolo was fitted), the other had the EF86 for the main channel, and I think the AC30/4 is the same. I believe any early Vox model that had a brilliance switch has the EF86 in that channel.
Regards,
Charlie
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Post by abstamaria on May 30, 2014 0:13:14 GMT
Thanks, Julian, Charlie. Would Apache have been recorded with an AC15 with the EF86 channel?
Andy
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Post by erikMAMS on May 30, 2014 7:27:52 GMT
Hank presumably got his first AC15 (with the 12AX7 preamp) in late '59. It seems to have been replaced with the two-tone second version AC15 (EF86 preamp) by the summer of 1960. There's a pic from Abbey Road studios, which is said to be from the recording of Quatermassters Stores (the same date at which Apache was recorded), showing 2 (Bruce and Hank) two-tone AC15 amps in action.
No hard evidences - but probably as close as we can get.
Erik
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Post by abstamaria on May 30, 2014 11:43:22 GMT
Many,many thanks,Erik.
Andy
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Post by Charlie Hall on May 30, 2014 14:44:25 GMT
Hi Andy,
I worked on one of the two tone models (not in its original cabinet though) and did not hear much difference between the two channels. That one did not have tremolo. Some of them did, apparently. Both channels sounded very good, and not as thin as with the later model that was used with the brilliance switch on, although the cut control was almost certainly used in that case to balance the tone.
We probably will never know whether the EF86 was used on Apache. From what I heard in that one amp, it didn't sound much different either way.
Regards,
Charlie
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Post by abstamaria on May 30, 2014 15:08:29 GMT
Many thanks, Charlie. I have the highest respect for you and appreciate your taking the time to explain. All this detailed interest must be a source of constant wonderment to Hank.
Best regards,
Andy
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Post by philc on Jun 2, 2014 7:12:12 GMT
My AC30H2 has both top boost and EF86 channels, just as a matter of interest, here's a clip from the manual.
Phil
BRILLIANCE SWITCH
This is based on the original tone altering control from the original AC15 which basically was Off
or had a massive bass cut function (which by its nature made the sound “brilliant”, but no bass).
We felt that the two original positions were too extreme, so we have expanded this to have three
positions, the new position being like the early AC30 “TREBLE” amps. So the function now is: -
OFF = flat response, 1 = treble (new position), 2 = brilliance (original circuit)
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Post by rogerbayliss on Jun 13, 2014 13:46:27 GMT
The brilliance switch on the Vox Heritage series is not quite the same as the early Vox brilliance circuits. I had mine altered by a good friend who changed the capacitor / resistor values to closer match the brilliance circuit of the early ef86 channels. I think this means the top cut is used a bit more as well since the mod. So unless you have this mod done you would typically need less top cut on to get the early sounds.
I also had the tone circuit of the top boost channel adapted to better match the early 60s AC30/6 on mine as well.
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