Calling Rockstah - 1959 HW to 12xxx series spec

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Guitarjb
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by Guitarjb » Sun Dec 06, 2009 11:11 pm

vkaxeman wrote:Thanks for the compliment Axeman! The credit and Thanks really belongs to ROCKSTAH for helping me make this Killer sounding amp! Could not have done it without his help!

The Marshall 1959HW:
v1a 330/820
v1b .68/820
v1a coupling .022
v1b coupling .022
vol1 bright 500p
tone stack 250p/56k
v2a .68/820
tone stack caps .022
Phase Inverter Input cap .022
Output Coupling caps .1
Screens 16u
Mains 32u
V3 PI 16u
Preamp 32u
Presence .1
220k resistor on V2 Pin 2
Mercury 7h Choke
Lar/Mar PPIMV
Georges Dagnall Clone OT
Georges Dual Tap PT on Low Voltage Tap

Using a Marshall SLP reissue 100% stock non-modified amp for the power amp.

PowerBrake and LineOut box just like Rockstah's setup. Greenbacks with 6402 cones.


To get early EVH, I thought Mark/Rockstah settled on using a 2203-type master volume preamp section (i.e with gain and master volume controls) along with the Lar/Mar PPIMV to control overall loudness- that is what he calls his M5 spec, isn't it?

-Joe

planetjimi
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by planetjimi » Mon Dec 07, 2009 11:20 am

vkaxeman wrote:Thanks for the compliment Axeman! The credit and Thanks really belongs to ROCKSTAH for helping me make this Killer sounding amp! Could not have done it without his help!

The Marshall 1959HW:
v1a 330/820
v1b .68/820
v1a coupling .022
v1b coupling .022
vol1 bright 500p
tone stack 250p/56k
v2a .68/820
tone stack caps .022
Phase Inverter Input cap .022
Output Coupling caps .1
Screens 16u
Mains 32u
V3 PI 16u
Preamp 32u
Presence .1
220k resistor on V2 Pin 2
Mercury 7h Choke
Lar/Mar PPIMV
Georges Dagnall Clone OT
Georges Dual Tap PT on Low Voltage Tap

Using a Marshall SLP reissue 100% stock non-modified amp for the power amp.

PowerBrake and LineOut box just like Rockstah's setup. Greenbacks with 6402 cones.
220K on pin 2 v2? What does that do? I thought that was something to do on pin2 v3 to get rid of harsh mids?

vkaxeman
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by vkaxeman » Fri Jan 08, 2010 11:05 pm

If anyone wants a pdf of this entire post complete with pictures that no longer display on the pages since putfile went kuput, go to
http://www.vandelynkross.com/1959HW/PDF ... 20spec.pdf

9 mb file. Will take a bit to download.

If I can find all my original pictures, I will host them somewhere else and update the post.
My first project: 1959HW to 12xxx Courtesy of the Late Great Rockstah a.k.a. Edward Van Abrahamian

boogyman
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by boogyman » Sun Nov 20, 2011 3:16 pm

vkaxeman wrote:If anyone wants a pdf of this entire post complete with pictures that no longer display on the pages since putfile went kuput, go to
http://www.vandelynkross.com/1959HW/PDF ... 20spec.pdf

9 mb file. Will take a bit to download.

If I can find all my original pictures, I will host them somewhere else and update the post.
Thanks for doing this!!! :toast:
Tom

vkaxeman
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by vkaxeman » Mon Nov 21, 2011 11:39 am

Your welcome! Rock On! :vh:
My first project: 1959HW to 12xxx Courtesy of the Late Great Rockstah a.k.a. Edward Van Abrahamian

OdgeUK
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by OdgeUK » Sun Jan 17, 2021 5:46 am

vkaxeman wrote:
Fri Jan 08, 2010 11:05 pm
If anyone wants a pdf of this entire post complete with pictures that no longer display on the pages since putfile went kuput, go to
http://www.vandelynkross.com/1959HW/PDF ... 20spec.pdf

9 mb file. Will take a bit to download.

If I can find all my original pictures, I will host them somewhere else and update the post.
Realise this is 10yrs old but just read most of this thread as part of research into maybe building a 12series spec kit OR buying a used 1959HW and modifying it to Ed-spec. Would you happen to still have that PDF?
73 JMP 1987 w/LarMar
78 JMP 1987
79 2104
Peavey JSX 120
Marshall 1936 G12-65
Gibson LP Custom, Squier CV 50's Strat w/SD '59

vkaxeman
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by vkaxeman » Mon Jan 18, 2021 3:02 am

OdgeUK wrote:
Sun Jan 17, 2021 5:46 am
vkaxeman wrote:
Fri Jan 08, 2010 11:05 pm
If anyone wants a pdf of this entire post complete with pictures that no longer display on the pages since putfile went kuput, go to
http://www.vandelynkross.com/1959HW/PDF ... 20spec.pdf

9 mb file. Will take a bit to download.

If I can find all my original pictures, I will host them somewhere else and update the post.
Realise this is 10yrs old but just read most of this thread as part of research into maybe building a 12series spec kit OR buying a used 1959HW and modifying it to Ed-spec. Would you happen to still have that PDF?
I found the original pdf and uploaded a copy to Google drive. The original pdf goes to page 47. So I also created and uploaded a new pdf of just page 48 and also a new one of just page 49 prior to this post reply.
Original PDF:
https://drive.google.com/file/d/1MJJREr ... sp=sharing
Page 48
https://drive.google.com/file/d/18cQy-8 ... sp=sharing
Page 49
https://drive.google.com/file/d/1lkcXN7 ... sp=sharing

Audio Files:
Looks like all the audio files referenced in the original pdf still exist at SoundClick. But the links in the original post don't take you directly to them. However, the names of the files should help you locate them and they are all located at
https://www.soundclick.com/artist/defau ... tent=songs
My first project: 1959HW to 12xxx Courtesy of the Late Great Rockstah a.k.a. Edward Van Abrahamian

OdgeUK
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by OdgeUK » Mon Jan 18, 2021 3:39 am

Really appreciate this! Thank you!

In hindsight... Would you still mod a 1959HW, or build a 12—series from scratch, with the Ed-spec components?
73 JMP 1987 w/LarMar
78 JMP 1987
79 2104
Peavey JSX 120
Marshall 1936 G12-65
Gibson LP Custom, Squier CV 50's Strat w/SD '59

vkaxeman
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by vkaxeman » Mon Jan 18, 2021 1:23 pm

OdgeUK wrote:
Mon Jan 18, 2021 3:39 am
Really appreciate this! Thank you!

In hindsight... Would you still mod a 1959HW, or build a 12—series from scratch, with the Ed-spec components?
I am guessing you are asking this question seeking advice trying to figure out which way you want to go. To modify an existing amp or to build an amp from scratch? And the answer would depend on what your goals are and how much free time you have to work on amps. If you just want to get an amp as fast as you can with 12 series specs you could:
1. possibly order one from George at MetroAmp if he still builds custom order 12 series amps
2. if George does not build 12 series anymore, possibly order a custom order 12 series amp from Greg Germino or David Bray or someone else that builds point to point 12 series era replicas.
3. buy a Marshall 1959HW or similar (Germino Amp, David Bray, etc..) point to point amp and mod it yourself (if you already know how to work on tube amps safely)
4. buy a used amp someone built using one of George's or Valvestorms 12series or Superlead kits and mod it (if you already know how to work on tube amps safely)

Forgive me if in the following I ask a question or make a statement that implies anything incorrectly about your level of knowledge with tube amps but since I don't know what experience you have with working on tube amps, a question for you. Do you already know what needs to be done to be able to work on an amp safely?

If the answer is "no", then it would be best to have someone else build a 12 series spec amp for you unless it is possible to find a mentor that can teach you or an electronics class, etc. to learn electronics safety before you begin working on amps.

If you already have experience and the answer is "yes you already have experience with and know how to work on tube amps safely", then

If you have the free time to build an amp from scratch it looks like you can still get the parts you need to build a 12 series from scratch from Valvestorm. And the needed Transformers from George at MetroAmp and/or Patrick at Mercury Magnetics and/or ****** and/or Marstan.
http://valvestorm.com/12xxx%20Series
http://valvestorm.com/Transformers#12series
https://store.metropoulos.net/collectio ... ke-1203-80
https://www.mercurymagnetics.com
http://www.merrenaudio.com/marshall_power_transformers
http://www.marstran.com/JTM45-100-JMP10 ... RMERS.html

You would learn more building from scratch vs buying an existing amp and modifying it. That being said you also will have more opportunities/variables for possible issues you have to troubleshoot and workout along the journey of building the amp which can take a lot of your time.

If you don't have a lot of free time but know how to work on amps already and safely, and/or also if it turns out all the parts are not available to build a 12 series from scratch then buying a Marshall 1959HW (or similar point to point amp) and modifying it might be a better option.

You probably already know this but remember when trying to get the "Ed Spec, (a "stock" Superlead amp from that era)" from your amp and get "the tone", "the sound", you will never achieve the exact sound 100% because you will always be missing the key ingredient "Ed and his hands". That being said you can get hints of the magic! Good Luck and Have Fun on your journey!
My first project: 1959HW to 12xxx Courtesy of the Late Great Rockstah a.k.a. Edward Van Abrahamian

OdgeUK
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by OdgeUK » Mon Jan 18, 2021 4:28 pm

.
Last edited by OdgeUK on Thu May 06, 2021 4:39 pm, edited 1 time in total.
73 JMP 1987 w/LarMar
78 JMP 1987
79 2104
Peavey JSX 120
Marshall 1936 G12-65
Gibson LP Custom, Squier CV 50's Strat w/SD '59

OdgeUK
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Just the numbers in order: 7
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Re: Calling Rockstah - 1959 HW to 12xxx series spec

Post by OdgeUK » Mon Jan 18, 2021 4:29 pm

Thanks for the detailed reply. Yes, some amp experience and familiar with working safely, but never built an amp from scratch. My key consideration is cost (although time, as you say, is important and I don't have too much of that either! ). I've daydreamed about owning an 'Ed spec amp' for as long as I can remember and now I've decided I need to make that happen. However, being in the UK, buying from George is going to make any build costs rise, after shipping of heavy items and import duty/tax, so I need to be efficient with my shopping. Building an amp from scratch appeals because I see how many components you changed on your 1959HW, so buying one of those and then changing Transformers / choke / filter caps could be a false economy. However, I guess it's easier for us in the UK to get our hands on a used 1959HW at a decent price (although the one on ebay UK right now is still a whopping £1,200!). Occasionally a metroamp project will turn up on ebay here but they are often priced as much as a used reissue. There is a metroamp project currently on ebay UK that claims to have been built for Dan Hawkins of The Darkness and has Mercury transformers. I really wanted George's heybour C1998 clone in my build though.
73 JMP 1987 w/LarMar
78 JMP 1987
79 2104
Peavey JSX 120
Marshall 1936 G12-65
Gibson LP Custom, Squier CV 50's Strat w/SD '59

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