2204 style build

Marshall Amp Discussion

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dcribbs1412
Posts: 1378
Joined: Wed Jun 11, 2008 6:56 pm
Location: Arizona Desert

2204 style build

Post by dcribbs1412 »

A simple 2204 style circuit.
A few TAG inspired mods (Jana)
Single input
A little over 400V B+
SLO style heater wiring
A little hum when dimed, but acceptable.
Not sure if elevating is worth it.


D
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joeboo88
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Joined: Thu Mar 28, 2013 8:51 pm
Location: Way up North

Re: 2204 style build

Post by joeboo88 »

Nice. Can we see the top view?
Bob S
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Location: Up there with the Michiganders

Re: 2204 style build

Post by Bob S »

Nice D - what value resistors did you use at the bias junction?
220k or 150k maybe.
Jana's mods definitely add a lot of tonal options.
Why Aye Man
dcribbs1412
Posts: 1378
Joined: Wed Jun 11, 2008 6:56 pm
Location: Arizona Desert

Re: 2204 style build

Post by dcribbs1412 »

Will upload some more pics
Bob using 100k in bias for now
Biased around 36mA

D
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cbass
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Location: Between Pomona & Bakersfield

Re: 2204 style build

Post by cbass »

Very nice
dcribbs1412
Posts: 1378
Joined: Wed Jun 11, 2008 6:56 pm
Location: Arizona Desert

Re: 2204 style build

Post by dcribbs1412 »

Thanks cbass
pic of topview
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dcribbs1412
Posts: 1378
Joined: Wed Jun 11, 2008 6:56 pm
Location: Arizona Desert

Re: 2204 style build

Post by dcribbs1412 »

Got her in the cab
added a foot-switchable boost using some xtra boards I etched for a upcoming D-style BM build. Also a exhaust fan.
Kinda ended up going steampunkish for whatever reason.

D
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JoeCon
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Re: 2204 style build

Post by JoeCon »

dcribbs

Looks awesome! Great color with that gold plexi front.
Not familiar with the "Jana Mods" could you share those??

Thanks...
In theory, theory is the same as practice. In practice it's different.
dcribbs1412
Posts: 1378
Joined: Wed Jun 11, 2008 6:56 pm
Location: Arizona Desert

Re: 2204 style build

Post by dcribbs1412 »

JoeCon wrote:dcribbs

Looks awesome! Great color with that gold plexi front.
Not familiar with the "Jana Mods" could you share those??

Thanks...
Thanks
Faceplate is actually copper
Mods are lower B+ and filtering with some gain mods.
Jana mods are from this thread
http://ampgarage.com/forum/viewtopic.php?t=18018
Also Roberto and others have some great mods and ideas here
http://ampgarage.com/forum/viewtopic.php?t=28221

D
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