6g6-B Normal Channel

[dannyreckless]

Hello, This is my first post and a total newb builder.
My name is Dan and I am from the PNW.

I considering building a Bassman like amp.
This would be my first amp build.
I know should probably start on like a champ or something similar.

But, I would really like to only build the Normal channel of the 6g6-b.
So not an exact clone of the amp.
My goal is to do it as cost effectively as I can, using what ever used parts I can.

I have been scrounging all the forums I can find via good and making a doc of all the useful and interesting.

SO, I am curious if any you fine folks could help me with editing the schematic/ layout to remove the bass channel and what ever it is I wouldn't need because of said removal?

Also curios if any of you who have built a 6g6B style amp might have a shopping list of all the parts you needed for the build?

Thank you all

[sluckey]

Here's the modified schematic/layout. You should do the parts list yourself. It's a good way to become familiar with the amp.

[dannyreckless]

Wow! You guys really work fast.

Thank you for taking the time to do that.

I plan on going the turret board route.

[ToneMerc]

You should do the parts list yourself. It's a good way to become familiar with the amp.

I agree and here's a source for the 350K/70K tapped treble pot.

https://taweber.powweb.com/store/350k.jpg

TM

[dannyreckless]

I agree as well.

This will be a great learning experience and I really look forward to this community.

[dannyreckless]

Do you guys think I could fit it in a frontman 25r chassis?

I saw in another thread someone build both channels into a slightly larger SS bass chassis.

[sliberty]

I don't know the dimensions of the Frontman, but I've built the Bass channel of the 6G6-B into a Blues Junior chassis, so you could use that for comparison. But plan carefully. The bottom edge of the chassis can get a little tight with 4 tubes, an output jack, a fuse and an A/C wire.

By the way, have you played through a 6G6-B? The Normal channel is nice, but the Bass channel is really special if you like overdrive. Not trying to convince you to change your mind, but want to make sure that you know what you are getting.

[dannyreckless]

I don't know the dimensions of the Frontman, but I've built the Bass channel of the 6G6-B into a Blues Junior chassis, so you could use that for comparison. But plan carefully. The bottom edge of the chassis can get a little tight with 4 tubes, an output jack, a fuse and an A/C wire.

By the way, have you played through a 6G6-B? The Normal channel is nice, but the Bass channel is really special if you like overdrive. Not trying to convince you to change your mind, but want to make sure that you know what you are getting.

Thank you for the visual. Do you have a build thread for your Bassman?

I stumbled upon a youtube video of a guy who had built the normal channel into Blues JR.

Personally I have not played a 6g6-b. But I am a big fan of Setzer and his tone. I know there are a ton of other variables there (His playing, pickups, guitar, super long curly chord, and Space echo.)

I am after that sparkling beautiful clean of that channel.
I have a Sovtek mig 100 that gets a nice overdrive that I really like.

[sliberty]

No build thread, sorry, although you may find something about a nagging hum that I have not yet solved.

If you are after the Setzer sound, you are on the right track. I built the bass channel because I was after something more aggressive.

[CHIP]

No build thread, sorry, although you may find something about a nagging hum that I have not yet solved.

If you are after the Setzer sound, you are on the right track. I built the bass channel because I was after something more aggressive.

Did you build a modified bass channel or the stock one according to original schematic?

[sliberty]

Stock. I simply connected the mixing resistor on the normal channel side to ground, effectively creating a voltage divider.

[sliberty]

I also recently built a AA864 Bass channel only amp. In this case, I did make a few small mods. I included a bright switch, which would normally only exist on the normal channel of that amp. I also changed what the deep switch does internally, as I didn't like the scooped effect. And very importantly, I removed a few of the "oscillation-stoppers" as they were choking off all of the highs in the amp. Finally, I added a pre-PI MV as a short term measure, thinking I might go with a VVR, or a post-PI MV eventually. But I actually like the pre-PI MV, so for now it will stay.

Bassman amps are cool

[xtian]

Hey, Steve, that 6g6b bass channel is very interesting, with the cathode follower, tone stack with only bass pot, then gain, then treble pot. Can you describe the tone?

[sliberty]

The bass channel of a 6G6 is a rock monster. Turn it up, and it gets VERY aggressive. Enters into Marshall territory rather than just a little edgy overdrive like most Fenders. Really cool, if you like that sort of thing (which I do).

[xtian]

Ah, yup. Yuppers.