Build Complete-Quad 6V6 Early Doo Doo Brown Style

[ToneMerc]

Here's the new build in progress; kind of a spin on what little is known about of #004 with some ODD vibe tossed in. In the spirit of the early vibe, I going with a traditional style PS instead of the precision styled PS.

4th Gen Transitional classic tone stack
Adj trigger funky OD network
2N3823 FET
Heyboer Marshall 50W M6 iron
Heyboer PT- around 405V on the plates
Quad 6V6:Tung Sol RI
JJ's V1-V3, V=12AT7

Main board mocked up for parts fitment, values subject to change. Nearly all of the chassis exterior wiring in done.

TM

[LeftyStrat]

I'll definitely be following this, I've been wanting to do a quad 6v6 build for some time.

[ToneMerc]

I'll definitely be following this, I've been wanting to do a quad 6v6 build for some time.

You might be interested in this 6V6 thread as well.

https://tubeamparchive.com/viewtopic.ph ... hlight=45w

TM

[dcribbs1412]

Looks really cool TM
Man you have some nice parts in your builds...
500k OD trimmer?...

Darin

[ToneMerc]

Looks really cool TM
Man you have some nice parts in your builds...
500k OD trimmer?...

Darin

I would have been cool looking if I would have went with my first plan and used chocolate paxolin.

Thanks Darin I'm just the NOS parts junkman and I like to use period correct parts when I can find them. For me, it mainly keeps the whole process interesting and I do believe that it makes a difference.

It's a 1M, but I've even debated about using a pot in it's place. From my earlier 2G build I wondered how would this OD network would behave if it had a bit more or a bit less gain. Also, I guess I'm still going to have the FET level adjustable via a small knob at the rear as well.

TM

[dcribbs1412]

Looks really cool TM
Man you have some nice parts in your builds...
500k OD trimmer?...

Darin

I would have been cool looking if I would have went with my first plan and used chocolate paxolin.

Thanks Darin I'm just the NOS parts junkman and I like to use period correct parts when I can find them. For me, it mainly keeps the whole process interesting and I do believe that it makes a difference.

It's a 1M, but I've even debated about using a pot in it's place. From my earlier 2G build I wondered how would this OD network would behave if it had a bit more or a bit less gain. Also, I guess I'm still going to have the FET level adjustable via a small knob at the rear as well.

TM

Someday I hope to do a build with a decent amount of NOS parts.

Great ideas...should cover a lot of adjustments.There's a 2/3G build in my future...would love to here what you think of your OD additions with different trimmer settings...
On my current build(in progress) I'm trying the FET on a relay...using a 10KL pot in the FET jack...


Darin

[Structo]

Yep, those are some tasty innards.

I'd love to build one of each but no dice.

So I will live vicariously through your builds.

[David Root]

TM, I love the period correct parts! I don't have enough CDE brown blobs to do a #004 but I do have some ARCO-EM which I believe are similar construction (difilms).

The schematic dwgs of #004 I have don't identify the PI entrance cap value. How did you arrive at .005uF?

[ToneMerc]

TM, I love the period correct parts! I don't have enough CDE brown blobs to do a #004 but I do have some ARCO-EM which I believe are similar construction (difilms).

The schematic dwgs of #004 I have don't identify the PI entrance cap value. How did you arrive at .005uF?

David if the are the same ElectroMotive caps as the PI couplers above they are paper/poly like the early Sprague 6PS.

That .005 value is from the Overdrive Deluxe that's in the files section. I debated about whether to attempt the starve switch and since it appears that the power schematic section was incomplete, I went with what I know. Now by the time that everything is soldered up, all the plates may be 100K and values of the PI values may match the drawings.

TM

[amplifiednation]

So you've decided against the starve switch?

[David Root]

Dumble did. He didn't use it much after the early ones.

TM, that makes sense on the .005 PI entrance. So max signal headroom thru the PI.

[ToneMerc]

Just about done minus completing the NFB circuit and mounting the PT.

TM

[Structo]

Is this layout close to what you built?

[ToneMerc]

Not really, take #004 basic topology and spin it this way:

1. Adjustable 2nd Gen OD network
2. Low PI plates
3. 4th Gen classic tone stack
4. Piher CF on cathodes like seen in the Overdrive Deluxe

TM

[amplifiednation]

Build pics look awesome TM, your builds kick some serious butt. I would love to spend a couple hours in your jam room. The clothes will be ready very soon...