SSS again

Overdrive Special, Steel String Singer, Dumbleland, Odyssey, Winterland, etc. -
Members Only

Moderators: pompeiisneaks, Colossal

User avatar
Bob-I
Posts: 3791
Joined: Thu Feb 02, 2006 10:06 pm
Location: Hillsborough NJ

SSS again

Post by Bob-I »

I have a Peavey Mace, 6-6L6 2x12 combo a friend gave me. I want to build an SSS using it.

I took one of my ODS schematics and added the post PI driver, the filters and pasted in a generic Fender reverb.

Open questions: With more to come I'm sure

1) Driver values?
2) Where to insert the reverb?
3) PS node for driver and reverb
4) Who took my cheeze?

Low resolution file here.
[img:2319:1666]http://www.sweettoothband.com/temp/Mace_SSS_sm.jpg[/img]
High resolution here.
http://www.sweettoothband.com/temp/Mace_SSS.jpg
txbluesboy
Posts: 387
Joined: Mon Apr 02, 2007 3:52 pm
Location: Dallas area
Contact:

Re: SSS again

Post by txbluesboy »

If you are putting an Overdrive section in, as I did,(not true SSS, but a good addition) you might consider doing as I did and alternate between reverb and OD with relays (1 in and 1 out). That way the reverb doesn't spoil the OD tone.
User avatar
Bob-I
Posts: 3791
Joined: Thu Feb 02, 2006 10:06 pm
Location: Hillsborough NJ

Re: SSS again

Post by Bob-I »

txbluesboy wrote:If you are putting an Overdrive section in, as I did,(not true SSS, but a good addition) you might consider doing as I did and alternate between reverb and OD with relays (1 in and 1 out). That way the reverb doesn't spoil the OD tone.
Thx, I hadn't thought of that. I do like reverb on the OD but coming before the OD might be an issue.

I'm still debating the OD, maybe yes, maybe no.
User avatar
Bob-I
Posts: 3791
Joined: Thu Feb 02, 2006 10:06 pm
Location: Hillsborough NJ

Re: SSS again

Post by Bob-I »

Funny that the other SSS threads are many pages long, this one ... :cry:

No comments on the schematic?
User avatar
Structo
Posts: 15446
Joined: Wed Oct 17, 2007 1:01 am
Location: Oregon

Re: SSS again

Post by Structo »

I wish I could help Bob, alas I know nothing about this amp.
Tom

Don't let that smoke out!
User avatar
dobbhill
Posts: 434
Joined: Sat Jan 22, 2005 12:04 am
Location: Louisiana

Re: SSS again

Post by dobbhill »

Just 'cause you asked:
I'd build it without the OD and reverb first, but leaving all options open. Keep it simple and get the basic structure and tone of the SSS the way you want it. Then add the OD and reverb. I am not a fan of "springs", so if it were mine, I'd opt for the built in D'lator instead of 'verb. I think the OD is a good idea, though.
Just a simple redneck's opinion. I'll be watchin'.
D
There are no stupid questions, just stupid people.......
User avatar
glasman
Posts: 1446
Joined: Wed Jan 19, 2005 10:37 pm
Location: Afton, MN (St Croix River Valley)
Contact:

Re: SSS again

Post by glasman »

Very nice on the schematic.

For driver value starting point, take a look at the fender super twin, it uses a 12AT7 for the driver.

I am sure that a number of tubes could be used for the driver. Depends one what the output tubes need for a grid swing to fully tickle them into submission :). 12AT7 is a good choice, wide BW and decent current capability.


A 2400 ohm load p/p tranny with 600V will get a quad of KT88 to near 200W. Someday when I have time, I am going to build a Megoid for myself :).

Gary
Located in the St Croix River Valley- Afton, MN
About 5 miles south of I-94
aka K0GWA, K0 Glas Werks Amplification

www.glaswerks.com
User avatar
crbowman
Posts: 460
Joined: Sun Jul 26, 2009 9:05 pm
Location: Austin, TX
Contact:

Re: SSS again

Post by crbowman »

Bob-I wrote:Funny that the other SSS threads are many pages long, this one ... :cry:

No comments on the schematic?
I think this is the first SSS schematic I've seen that has the step filters. Very Cool Bob. If you don't mind me asking, how did you get this info, and what kind of unsavory services did you have to render??
<i> "I've suffered for my music. Now it's your turn."</i>
User avatar
M Fowler
Posts: 14020
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: SSS again

Post by M Fowler »

Some SSS seem to be using the 12BH7 ampeg section.
User avatar
Bob-I
Posts: 3791
Joined: Thu Feb 02, 2006 10:06 pm
Location: Hillsborough NJ

Re: SSS again

Post by Bob-I »

glasman wrote:Very nice on the schematic.

For driver value starting point, take a look at the fender super twin, it uses a 12AT7 for the driver.

I am sure that a number of tubes could be used for the driver. Depends one what the output tubes need for a grid swing to fully tickle them into submission :). 12AT7 is a good choice, wide BW and decent current capability.


A 2400 ohm load p/p tranny with 600V will get a quad of KT88 to near 200W. Someday when I have time, I am going to build a Megoid for myself :).

Gary
Thx Gary. I'll look at the super twin. I'll be running 6 x 6L6s on this one. Peavey claims 160 watts, plenty for me. 8)
User avatar
Bob-I
Posts: 3791
Joined: Thu Feb 02, 2006 10:06 pm
Location: Hillsborough NJ

Re: SSS again

Post by Bob-I »

crbowman wrote:
Bob-I wrote:I think this is the first SSS schematic I've seen that has the step filters. Very Cool Bob. If you don't mind me asking, how did you get this info, and what kind of unsavory services did you have to render??
I actually searched months ago and found these posted here. I forget who posted them but they look like excellent work. The final will most likely have fewer steps, 7-8.
User avatar
Bob-I
Posts: 3791
Joined: Thu Feb 02, 2006 10:06 pm
Location: Hillsborough NJ

Re: SSS again

Post by Bob-I »

M Fowler wrote:Some SSS seem to be using the 12BH7 ampeg section.

Yes, and I saw an odd post stating that the bias supply needs to be -300VDC. I don't understand that.
User avatar
Structo
Posts: 15446
Joined: Wed Oct 17, 2007 1:01 am
Location: Oregon

Re: SSS again

Post by Structo »

:shock:
Tom

Don't let that smoke out!
User avatar
crbowman
Posts: 460
Joined: Sun Jul 26, 2009 9:05 pm
Location: Austin, TX
Contact:

Re: SSS again

Post by crbowman »

Bob-I wrote:
M Fowler wrote:Some SSS seem to be using the 12BH7 ampeg section.

Yes, and I saw an odd post stating that the bias supply needs to be -300VDC. I don't understand that.
Yow! Seems like you could bias yourself right into utter silence.
I don't get that either.
<i> "I've suffered for my music. Now it's your turn."</i>
User avatar
Bob-I
Posts: 3791
Joined: Thu Feb 02, 2006 10:06 pm
Location: Hillsborough NJ

Re: SSS again

Post by Bob-I »

crbowman wrote:
Bob-I wrote:
M Fowler wrote:Some SSS seem to be using the 12BH7 ampeg section.

Yes, and I saw an odd post stating that the bias supply needs to be -300VDC. I don't understand that.
Yow! Seems like you could bias yourself right into utter silence.
I don't get that either.
I looked over the SVT schematic,I think it may be because the driver is direct coupled with no DC blocking cap. There would be a +DC voltage on the cathode so the -300 is to produce a - potential on the power tube grids.

I'm not really up on why direct coupled would be better than having a cap. :oops:
Post Reply