where did I find this?

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beezerboy
Posts: 7
Joined: Mon May 15, 2017 5:56 am

where did I find this?

Post by beezerboy » Fri Dec 01, 2017 8:02 am

like it says... were? I copied it to my computer some time ago but there is no information with it... lost in a computer change I guess. it looks like a really interesting amp & I'm thinkin a 6v6 would be a good next project
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beezerboy
Posts: 7
Joined: Mon May 15, 2017 5:56 am

Re: where did I find this?

Post by beezerboy » Fri Dec 01, 2017 8:08 am

so anyway.... good bad indifferent? changes you would make. suggestions on things like... transformers. anything else?

10thTx
Posts: 1431
Joined: Sat Dec 30, 2006 1:13 am

Re: where did I find this?

Post by 10thTx » Fri Dec 01, 2017 11:17 am

That looks like one of the ExpressSCH editable schematics I drew up some years ago. However, I don't know if that is an actual one I drew or if someone edited one I drew and made that? I have not built that amp, but I think it would be a good design. I have used "one tube reverbs" on a number of amps with success.

I think if you're using 6V6's, I'd consider a PT that is 300-0-300 with 140ma or more. On my Tweed BluezMeister and my Carolina Overdrive Special, I use a Hammond 272FX which is a stand up PT which gave me plenty of room in the chassis. And both builds are cathode biased, so I can simply change between 6V6 and 5881 tubes without re-biasing. I found if I used a 100uf cathode cap on power tubes, that it somewhat emulates a fixed biased tone.

https://www.tubesandmore.com/products/t ... 0-v-172-ma

Then you could use a GZ34 for 300 x 1.3 = 390v on the plates. OR a solid state plug in rectifier for 300 x 1.4 = 420v on plates.

With respect, 10thtx

10thTx
Posts: 1431
Joined: Sat Dec 30, 2006 1:13 am

Re: where did I find this?

Post by 10thTx » Fri Dec 01, 2017 11:28 am

OK, I did find my old copy of that SCH drawing. I would consider these changes IF I were building it. The changes are based on what I learned in my two builds mentioned in the previous post.

I've attached the editable version for you.

With respect, 10thtx
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10thTx
Posts: 1431
Joined: Sat Dec 30, 2006 1:13 am

Re: where did I find this?

Post by 10thTx » Fri Dec 01, 2017 11:39 am

Or you could use an active FX instead of reverb and then use delay or reverb in the FX. The PT and B+ rail are on the 2nd page of the SCH attachment.

With respect, 10thtx
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beezerboy
Posts: 7
Joined: Mon May 15, 2017 5:56 am

Re: where did I find this?

Post by beezerboy » Sat Dec 02, 2017 1:23 am

very nice.... thank you

jam-mill
Posts: 162
Joined: Sun Nov 17, 2013 8:37 pm
Location: San Diego, CA

Re: where did I find this?

Post by jam-mill » Sat Dec 02, 2017 3:51 pm

John 15:12-13

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