5F6-A 2204 Build

Chris-in-LA

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I got the itch reading the recent build threads and I couldn’t resist. I was thinking about building a 4x10 cab but decided to add a little more money and ordered a Bassman kit from Mojotone, speakers from Weber. Since I already have a number of amps without a master volume and really can’t play them much at home, I decided to build this Bassman with a 2204 front end. These amps can be loud so I decided to experiment. The layout of the 5F6A is not that much different from the 2204 and I like the way that the volume controls work on the 2204. I ordered the kit last Monday and already received the parts, the case arrives by Monday.

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The only thing I don’t like about Mojotone tweed kits is that you have to figure out where to drill the holes for the circuit boards. Once that was done, I mounted the transformers and tube sockets.
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Trouble

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Chris-in-LA

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Do you guys think it matters? Should I wire the heaters in Fender or Marshall style?
 

Trouble

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I don't think it matters my last couple fender builds I used the Marshall style.
 

thetragichero

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either way can work well when done well. my most recent build is a combo of both since the power tubes and phase inverter are close together while the preamp tube is much farther away from them (pentode preamp). i generally base it on how i see the rest of the amp going together
 

Chris-in-LA

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I'd go Fender style throughout.
Ok, Fender style but it looks like it doesn’t really matter. Did a little work on the power section while waiting for this answer. BTW, what is the purpose of that .047 cap on the standby switch?

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adew1

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I've got my popcorn ready too. Looking forward to seeing what you come up with!
 

thetragichero

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cap likely prevents arching, although I'm not sure if I've seen on a standby switch (unless it's pre-rectifier). i use on the mains power switch (i usually don't use a standby switch)
unless it's to ground after the rectifier, i have seen that
 

Chris-in-LA

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cap likely prevents arching, although I'm not sure if I've seen on a standby switch (unless it's pre-rectifier). i use on the mains power switch (i usually don't use a standby switch)
unless it's to ground after the rectifier, i have seen that
Yes, it’s to ground after the rectifier.
 

South Park

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It works like a soft start to me the cap charges up first then goes to the power rail . Some old school stuff you still find . So if you build the cascade input are you going to have the all the inputs or just two 6l6 or el34 power
 

Chris-in-LA

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It works like a soft start to me the cap charges up first then goes to the power rail . Some old school stuff you still find . So if you build the cascade input are you going to have the all the inputs or just two 6l6 or el34 power
Two inputs wired like a 2204 with Cliff jacks.
 

Chris-in-LA

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Finished wiring the preamp section. I had a bunch of Valvestorm wire leftover from some previous builds and couldn’t resist using it. I also had to drill out the input jack holes to fit the Cliff jacks.

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Chris-in-LA

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The board is finished, just need to check all the connections after a good nights sleep. Next step is to wire the heaters and put in the pots.

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