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Post by laurie on May 26, 2009 12:24:05 GMT
Hi Charlie,
Thanks again on KCP Marvin amp. It seems like the AC-30 config with the 4 x EL84? But I am sure it is a great amp.
I just come back from trip and I will try the G2 again.
Cheers laurie
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Post by Charlie Hall on May 26, 2009 13:55:24 GMT
Hi Laurie, Yes, the output stage of the KCP is based on the AC30, but with a couple of tricks thrown in, one for the master volume design, the other to make the amp run cooler. The preamp design for channel 1 was not based on Vox and was designed to be more versatile, but can have a similar sound. Channel 2 was the early Vox EF86 design, more or less, but did not have a brilliance switch. Regards, Charlie
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Post by 26rednef on Feb 19, 2010 15:57:16 GMT
Hi there. I could not stop my fingers from writing when I saw you guys talking about EF86. My experience of this is, the EF86 produces a softer sound then a ECC83 / 12XA7, it is very hard to describe the different it just is there and what it is is difficult to say. I have built Amps with both types, I prefer EF86, to me it sounds more musical then 12AX7 / ECC83 especially when it is hard driven. That can be one part of That Sound a other part can be the use of speakers Goodmans Audiom 60 or Rola Celestion Blue speaker they sounds a lot different.
Kind Regards 26rednef
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Post by Charlie Hall on Feb 19, 2010 17:07:37 GMT
Hi 26rednef, The EF86 has much higher gain than a triode like the ECC83, so the EF86 has less headroom. The way it overloads is different and I think that is what makes it sound softer. Pentodes like the EF86 also have different transfer characteristics ie. the way they distort, than triodes. Regards, Charlie
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Post by 26rednef on Feb 19, 2010 18:18:34 GMT
Hi Charlie.
Yes there are lot of things that differ between a triode and a pentod from signal point of view. The pentod make the life easier for the Amp designer, it simplifies the preamp down to one tube step in most cases as in VOX AC15/EF86, witch also will have a positive impact on the sound, less components in the signal path with negative influences on the sound, fewer trade offs to make and so on. The problem with it back then was it couldn't take the tough environment in a Guitar Amp it braked down to often, it had to be changed to the more robust ECC83/12AX7. In my opinion from the musical point of view a degradation .......... uuups.
Kind Regards, 26rednef
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Post by pinot on Mar 4, 2010 13:35:58 GMT
Does anyone know where I can buy this book? I googled and found many opinions but no shop to buy it.
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Post by didier on Mar 5, 2010 21:42:59 GMT
Does anyone know where I can buy this book? I googled and found many opinions but no shop to buy it. Which book are you reffering to ? Didier
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Post by Charlie Hall on Mar 5, 2010 23:16:26 GMT
I think That Sound by Roberto Pistolesi. Regards, Charlie
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Post by pinot on Mar 6, 2010 18:29:32 GMT
Yes I am looking for the book: "That Sound" by Roberto Pistolesi
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Post by peterbower on Mar 6, 2010 21:00:41 GMT
Hi Just as info. The book 'That Sound' written by Roberto also came with a CD. Roberto had recorded a few tracks with his Gretsch which he claimed Hank had with his Gretsch, Apache being his favourite claim. It was done for the listener to make a comparison.
The CD is interesting to listen to and a few people have said no way did Hank use a Gretsch on those tracks, but others have said, not sure. I make no 'public' judgement.
Peter
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Post by 26rednef on Mar 7, 2010 11:22:54 GMT
Hi there. I don't know if this is old "news" for you. The article can be found in "PIPELINE Magazine" [# 46 (1999)] and the bock is referenced in Shadsfax, #28/2000, the bock "THAT SOUND" was offed for sale by Leo's Den. I don't know if it is still on the market. Kind Regards, 26rednef
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Post by pinot on Mar 8, 2010 19:33:27 GMT
Hi, I got the feedback from some possible shops that this book is not available anymore.
Is there anyone who owns this book and would sell it to me??
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Post by 26rednef on Mar 8, 2010 21:34:18 GMT
Hi.
I don't have the book, but I have Pistolesi's PIPILINE article and can mail it to you.
Kind Regards, 26rednef
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Post by abstamaria on Aug 3, 2011 14:06:27 GMT
I printed this thread a year ago and came across the material today. I reread it and recommend it highly. The discussions are very instructive.
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Post by inosense on Nov 18, 2017 17:52:55 GMT
Hi Didier, I read with interest your original post "Hank Marvin did own a Gretsch Country Gentleman, you can see it on stage as a spare guitar on some photos.". We believe this is the guitar you're referring to. We believe Hank sold it to a guitar shop in Central London in 1972 where it was bought by the current owner. There are more details here: www.alturnertivemusic.com/my-1959-gretsch/
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