AFAIK this isn't SSS #001. AFAIK this is the chassis of a Dumbleland 150W with tremolo, reverb and two 6267 tubes (no filter section). I've attached a picture of what AFAIK is the front of this Dumbleland 150W and a picture of what AFAIK is its chassis on Alexander Dumble's bench.
passfan wrote:If he wants to take credit for sharing he can. I can only post 5 at a time as they are high res.
You took the better pics, Passfan! I'm just happy to have my new amp to play around with a little! Unfortunately I'm in the beginning of a long distance move and won't be building again for many months. I'm trying to squeeze in what little play time I can. I think this is a great thread and hope people continue to share. I, for one, very much appreciate the knowledge being shared and I'm learning a lot from the discussion. Eventually I plan to create my own clean, single channel amp with reverb, hopefully in a smaller footprint, if possible, using one of my spare donor amps. These SSS designs make for a monster sized amp, unfortunately.
vibratoking wrote:Since the genie is partially out of the bottle - SSS #4. No guarantee of accuracy. Some questions may be answered by comparing both.
Well now since I worked with Bill on this schematic I have a right to say that we never intended it to be posted and now I see it's made the rounds and ended up posted here really pisses me off!!..You can't trust anyone!!.. I think I'll take a break from this place for a while..Later!!
Tony
Tony, I have given every piece of information I have ever received to this community. I am sorry you are upset, I feel you have made valid contributions to this community. But splitting this community into those deserving of information, and those not deserving of information, is just what it is on face value, splitting the community.
How many people that have contributed their hard work to validating schematics are on the non inclusion list?
And I would also call out all those "in the know," Nik, Andy, Jelle, Brandon, even Dr Z. How would you measure the balance between what you've taken from this board, versus what you've given?
Not trying to be an asshole, just wondering which people think they gave more than they received, I'm certainly not one.
sonicmojo wrote:
You took the better pics, Passfan! I'm just happy to have my new amp to play around with a little! Unfortunately I'm in the beginning of a long distance move and won't be building again for many months. I'm trying to squeeze in what little play time I can. I think this is a great thread and hope people continue to share. I, for one, very much appreciate the knowledge being shared and I'm learning a lot from the discussion. Eventually I plan to create my own clean, single channel amp with reverb, hopefully in a smaller footprint, if possible, using one of my spare donor amps. These SSS designs make for a monster sized amp, unfortunately.
Sonic, just want to thank you for those hires pics. Bringing a bunch of eyes will no doubt result in variations to suit every need.
Max. thank you again. That must be a monstrously huge chassis for a 150W OT to look that small! From the pic of the amp itself it is obviously pretty large.
Let's see where there is some consensus on the current #002 schematic?
Let's break it down into sections & get some vote that it either looks correct/reasonable ............ or there is an obvious error.
1) FET
2) V1a to V1b including tonestack
3) V1b to V2a which includes the high & low pass filter (and perhaps some
type of local negative feeback?)
4) V2 to V3 including the 1MA Level and passive effects loop (buffer?)
5) Reverb section including insertion points
6) Negative feedback (off LTPI)
7) LTPI into 12BH7 driver to power tubes
8 bias control
9) PT & B+ rail
IF you would PLEASE, (when you respond) list 1 thru 9 and for each section, ......state Yes/OK ...... OR list the section #/number with a suggested correction.
Let's see what we can do to finalize a DRAFT for #002. There has been some great community forum effort, maybe we can finish this out with a working prototype that someone can build?
I'll try to watch the responses and update the schematic with corrections.
With respect, 10thtx
It appears to me that Nick is taking the LNFB from the grid of a triode off V2. Perhaps if sonicmojo has time he could comment on it's effect on the tone. I feel , from playing the amp, that the filters are useable, if not correct and it's a shame that Nick hot glued the caps together . I'd love to see the values but it may have cut down on noise or microphonics. Taken as a whole it would be "Nicks take". Individually it may provide some missing links.
David Root wrote:That must be a monstrously huge chassis for a 150W OT to look that small! From the pic of the amp itself it is obviously pretty large.
AFAIK the dimensions of this 6267 Dumbleland 150W are the usual ones for a Dumbleland 150W with the exception of some early ones which have less width but more depth. Beginning with AFAIK #009 the dimensions of a Dumbleland 150W chassis are AFAIK the same as the dimensions of a SSS 150W chassis and an ODS 150W chassis.
To perhaps give you an even better visual impression of the dimensions of a Dumbleland 150W in relation to a more familiar ODS 100W and a Dumble 2x12" cabinet I've attached a picture from Bill Morgan’s site that shows an ODS 150W on top of a Dumble 2x12" cabinet and this 6267 Dumbleland 150W on top of a Dumble 4x12" cabinet. On the right there's one of the earlier Dumbleland Special 150W amps which have less width but more depth. And on top of the ODS 150W and the 6267 Dumbleland 150W there's a 5th generation "skyline" ODS 100W. As you can see, the ODS 150W and the 6267 Dumbleland 150W have the same width as the long side of a Dumble 2x12" cabinet. If you compare this picture with pictures of one of SRV's SSS 150W amps you'll see that the dimensions of SRV's SSS 150W amps are the same as the dimensions of the 6267 Dumbleland 150W and the ODS 150W on the attached picture.
Tony, I have given every piece of information I have ever received to this community. I am sorry you are upset, I feel you have made valid contributions to this community. But splitting this community into those deserving of information, and those not deserving of information, is just what it is on face value, splitting the community.
I really don't think of it in terms of those deserving of information..That Never enters my mind!!.. I think of of it as honoring the request of others who might not want to have this information posted...Now I am in a tough spot..Get it
Back to the SSS
Tony
" The psychics on my bench is the same as Dumble'"
10thTx wrote:Let's see where there is some consensus on the current #002 schematic?
Let's break it down into sections & get some vote that it either looks correct/reasonable ............ or there is an obvious error.
1) FET
2) V1a to V1b including tonestack
3) V1b to V2a which includes the high & low pass filter (and perhaps some
type of local negative feeback?)
4) V2 to V3 including the 1MA Level and passive effects loop (buffer?)
5) Reverb section including insertion points
6) Negative feedback (off LTPI)
7) LTPI into 12BH7 driver to power tubes
8 bias control
9) PT & B+ rail
IF you would PLEASE, (when you respond) list 1 thru 9 and for each section, ......state Yes/OK ...... OR list the section #/number with a suggested correction.
Let's see what we can do to finalize a DRAFT for #002. There has been some great community forum effort, maybe we can finish this out with a working prototype that someone can build?
I'll try to watch the responses and update the schematic with corrections.
With respect, 10thtx
Compared to the hand drawn schematics I only found:
2) deep switch: the 10k tail is missing;
3) low filter: connection pole to "green" via 270k is missing
Aaron wrote:I've started tracing the Ceriatone SSS.
I'm still working on the filter section, but how does the rest look.
I've left out the Jazz/Rock cause I never use the Jazz and like the mid switch more.
My eyes are like this Gotta go to bed
Aaron
It's interesting that the Ceriatone doesn't have any DC-coupled cathode followers. I was rereading Merlin's discussion of the CF last night, about how it introduces compression and second harmonic distortion, and thought it was responsible for the 'mojo' of the SSS.
Gotta go to bed