SSS #007

[Eges]

So after searching the forum and other sources for hours I was first at the impression that closest to 007 is something like an SSS 002 with Dumbleland PI\power section (12AU7/12BH7 AC coupled driver) until I found with 67Plexi's "SSS 007 Build" now here is where everything gets messy:

Back in 2014 67Plexi "confirmed" the PI to be 12au7/12bh7 ac coupled driver. Talk was about reverb section etc

Then here comes 18 June 2016 the build. It is stated that it is using 3x 12ax7 and 2 12bh7a's with 6550. So I assume it was still basically an SSS preamp + ODR 2 tube Reverb and Dumbleland power section(with 2 12bh7a's for PI). (Actually it can be directly the SVT power section so DC coupled)

But now comes the real interesting stuff 28 Spetember 2016. Plexi67 confirmed he saw gut shots of 007 and had a friend that worked on a later version and said that:

Stevies SSS's are with 8 preamp tubes!

Here is the description V-1 EF86 , V2 EF86 for master(????), V-3 7025 side of 12dw7 for high step filter, v-4 12dw7 7025 side for Low Step Filter, PI is 12ax7 with 12ax7 cathode follower.(and ODR 2 tube reverb ofc)

This raises questions but I think this explains a Silver Aligator with step filters but step filters are somehow using two tubes for recovery? Can someone explain what is the deal with it? How you implement the filters that way...Also we were pretty sure that PI was Dumbleland.....

[And comes 21 February 2017 which claims SSS 150 watts are V-1 EF86, V2 EF86, V-3 EL85, V-4 12DW7 and a single 12au7 PI (Now this is weird, I do believe all the 150 watt Dumble's had pi+driver/follower) now the preamp section's tube count is reduced from 6 to 3!.... how is this gonna work...?]

Anyways I think most accurate info was the 28 Spetember 2016 which specifically mentioned SRV's amps. But how would we come up with a schematic for this any thoughts guys? Am I understanding something wrong?

Here is the best I could come up with the preamp (but step filter recovery is one tube since I have no idea how to make it use 2 tubes)

SSS 007 with one step filter recovery tube.jpg

[Eges]

Now the back of a Blackface of SRV. On this amp 2nd tube next to 6550’s are taller. So it is 12bh7 pi>12au7 driver instead?

[Eges]

So there is one clone that is based on SRV's blackface is in the wilds. https://www.thegearpage.net/board/index ... r.2563859/

I hope whoever buys it can share what it is and help solve the mystery

[dbharris]

No disrespect intended to Brandon, but do we know if this is his take on what might be in that amp (an educated guess) or that he has some specific knowledge (pictures or time inside the SRV chassis)? I'd love to know more about this circuit.

This YouTube video may be interesting if you have not seen it already, in particular Brandon's description of the tubes per each circuit.



-Dan

[Charlie Wilson]

I thought Brandon’s amp was #oo5 which belonged to Eric Johnson then Stephan Bruton and finally Carlos Santana and yes he was in that amp.
CW

[dbharris]

I thought Brandon’s amp was #oo5 which belonged to Eric Johnson then Stephan Bruton and finally Carlos Santana and yes he was in that amp.
CW

Thanks, Charlie. That is what I have heard too.

I was assuming (but open to being corrected) that his SRV version is based on some educated guesses and tweaks to the #005 circuit. Also interesting that he called the SRV circuit in the YouTube description the "Bludoland 150SL voicing" which implies to me it is more like a Dumbleland in circuitry or tube complement than a "standard" SSS.

-Dan

[Charlie Wilson]

I think SRV used a converted Dumbleland (to SSS) for Texas Flood. I got to see that amp in person.
CW

[rccolgan]

Grammatico amps has close ties with Jimmie Vaughan so perhaps see if he was able to get access and to share his findings with the community.

https://grammaticoamps.com/

[Eges]

No disrespect intended to Brandon, but do we know if this is his take on what might be in that amp (an educated guess) or that he has some specific knowledge (pictures or time inside the SRV chassis)? I'd love to know more about this circuit.

This YouTube video may be interesting if you have not seen it already, in particular Brandon's description of the tubes per each circuit.



-Dan

Oh yeah, this one kinda became my guide but I don't even know if "bludoland" and the one on sale are the same.

[WhopperPlate]

I recall Bruce Egnator testifying that when he worked on SRV SSS it was literally an ampeg SVT rebuilt

[timrobertson100]

I recall Bruce Egnator testifying that when he worked on SRV SSS it was literally an ampeg SVT rebuilt

The story is on this thread I think.
https://ampgarage.com/forum/viewtopic.php?t=30133

As I begin inspecting this beast, it became clear that this was an SVT power amp chassis with the Dumble preamp. Not like an SVT, but an actual SVT chassis from an Ampeg amp.

[Roe]

I recall Bruce Egnator testifying that when he worked on SRV SSS it was literally an ampeg SVT rebuilt

The story is on this thread I think.
https://ampgarage.com/forum/viewtopic.php?t=30133

As I begin inspecting this beast, it became clear that this was an SVT power amp chassis with the Dumble preamp. Not like an SVT, but an actual SVT chassis from an Ampeg amp.

yes: "this was an SVT power amp chassis with the Dumble preamp. Not like an SVT, but an actual SVT chassis from an Ampeg amp"

[Eges]

SVT story makes the pi/driver DC coupled but as far as I can understand Dumble did not use dc coupled setup with 12au7/12bh7 combination. Still a big what if to me.

[Roe]

SVT story makes the pi/driver DC coupled but as far as I can understand Dumble did not use dc coupled setup with 12au7/12bh7 combination. Still a big what if to me.

which tubes did he use with the DC coupled driver?

[Eges]

As far as I know either 12ax7/12ax7 or 12ax7/12at7