10,000 circuit

astor 1 · Post by **astor 1** » Wed Mar 12, 2014 6:59 am

hello guys I'm new to the site, my name is and I am writing from Italy astor 1
I wanted to ask you which circuit and 'one of the series 10000?, and perhaps equal to 45 100
except filters? thanks

neikeel · Post by **neikeel** » Wed Mar 12, 2014 8:22 am

astor 1 wrote:hello guys I'm new to the site, my name is and I am writing from Italy astor 1
I wanted to ask you which circuit and 'one of the series 10000?, and perhaps equal to 45 100
except filters? thanks

Welcome astor 1

Your question sounds as if you want a specific answer but I am not sure I understand it,exactly. The first 10000 series amps were actually 45/100s just used EL34 OT and slightly lower voltages made in early 67. They morphed from dual rectifier to single rectifier and slightly higher filtering by the end of 67. The preamp of early 45/100 (the KT66 ones) had single 16uF filter can, later ones dual 32uF (although the Dickinson/Hendrix one was modded to the later set up). Have I answered?

astor 1 · Post by **astor 1** » Wed Mar 12, 2014 7:20 pm

was referring to the values of the turret board (resistors, capacitors) as values and 'equal to 45/100?
thanks

astor 1 · Post by **astor 1** » Wed Mar 12, 2014 7:22 pm

or where I can find a layout of the 10,000 series?

Roe · Post by **Roe** » Wed Mar 12, 2014 10:26 pm

You could be clearer when asking. There is no single layout that all 10.000 series amps use. the preamp board is basically like jtm45(/100)

astor 1 · Post by **astor 1** » Thu Mar 13, 2014 12:06 am

and the rest, what are the differences compared to the 45/100? for example (tone stack capacitors, v2a, v2b catothe resistor, resistor normally mix cha, cha bright resistors, capacitors, etc. ........... v1a chatode) sorry for my bad English

Roe · Post by **Roe** » Thu Mar 13, 2014 12:55 am

470k mix resistors were introduced in 67, and the dual filter cans for v1 and v2 were introduced slightly earlier

astor 1 · Post by **astor 1** » Thu Mar 13, 2014 1:06 am

the rest of the values and 'equal to jtm45/100?

astor 1 · Post by **astor 1** » Thu Mar 13, 2014 2:25 am

to explain better, I would build a 10,000 67 and I do not know 'that seguire.c layout' and 'someone who can' tell me where to find it, or where to find the values of the components?

neikeel · Post by **neikeel** » Thu Mar 13, 2014 2:46 am

As Roe said the spec differs from early 67 to late 67.

Here is a preamp board of KT66 equipped JTM45/100, filter caps are x7 32uF:
http://amparchives.com/album/Marshall/1 ... _5347.html

Here is my early 67 JTM45/100 with EL34 trannies as stock, dual rectifier, 8 filtercaps, only difference between this is the dual preamp can on my amp - all the rest is the same as the KT66 amp:
http://amparchives.com/album/Marshall/1 ... es/15.html

Here is a mid 67 amp, still dual rectifier and 8 filter caps. This has 470k mixers:
http://amparchives.com/album/Marshall/1 ... /5f_3.html

One of the last 67 (contimued into 68):
http://amparchives.com/album/Marshall/1 ... /b5_3.html
This now has two preamp dopping resistors (the series 8k2 resistors next to the bias), 47k NFB and a different filter cap board.

Which one do you want to build?

astor 1 · Post by **astor 1** » Thu Mar 13, 2014 5:26 am

One of the last 67 (contimued into 68):
http://amparchives.com/album/Marshall/1 ... /b5_3.html
This now has two preamp dopping resistors (the series 8k2 resistors next to the bias), 47k NFB and a different filter cap board.
I would like to build this version lead (jtm black flag series 10,000)
the other layouts are the 45/100, not JTM Black Flag true?

neikeel · Post by **neikeel** » Thu Mar 13, 2014 9:01 am

astor 1 wrote:One of the last 67 (contimued into 68):
http://amparchives.com/album/Marshall/1 ... /b5_3.html
This now has two preamp dopping resistors (the series 8k2 resistors next to the bias), 47k NFB and a different filter cap board.
I would like to build this version lead (jtm black flag series 10,000)
the other layouts are the 45/100, not JTM Black Flag true?

Not quite true, Black Flags are usually dual rectifier and single dropping resistor between PI and screens nodes, with 2" Drake OT and Drake PT.
The one you show is JMP spec with Dagnall transformers. The one you show is a US amp and is one of the very last shared cathode lead amps and it is missing its bright cap on vol 1 pot. As such is SB spec. Slightly more agressive than the Drake OT amps.

astor 1 · Post by **astor 1** » Sat Mar 15, 2014 2:31 am

what kind of diodes can be used in this circuit, the UF4007, UF5408 or?

neikeel · Post by **neikeel** » Sat Mar 15, 2014 4:00 am

astor 1 wrote:what kind of diodes can be used in this circuit, the UF4007, UF5408 or?

Either wil work fine, you can use NF4007 or NF5408, I like the UF5408 (fast quiet and high current rating).

astor 1 · Post by **astor 1** » Sat Mar 15, 2014 6:23 am

One of the last 67 (contimued into 68):
http://amparchives.com/album/Marshall/1 ... /b5_3.html
regarding Screens Filter can use either 100uF or 32uf true?
and then I see a capacitor as close to cathode resistor and 'its value?, and I have to use it' cause you do not see on other models

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