Everything You Ever Wanted to Know Part II

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

Moderators: pompeiisneaks, Colossal

grtamp
Posts: 346
Joined: Tue Mar 23, 2010 9:37 pm

Re: Everything You Ever Wanted to Know Part II

Post by grtamp »

some ideas for vibrato stage? seems to me without opto-res.

schematic?
CHIP
Posts: 760
Joined: Sat Jan 05, 2008 4:35 am
Location: Down by the river

Re: Everything You Ever Wanted to Know Part II

Post by CHIP »

I guess it's been established that the preamp on this amp seems to be a low plate classic. Does anyone have an opinion or educated guess on what the preamp cap values are? (mid, bass, treb, clean2 coupler, OD couplers, PI, grid.)
I'm considering converting an amp that would be great for slide playing.
groovtubin
Posts: 1105
Joined: Tue Feb 07, 2006 4:52 am

HRM slow????

Post by groovtubin »

odourboy wrote:Marvelous! :D
They musta stole a bad design, mine is fast as a ferrari on the strings!

Jim@Omegaamps
User avatar
boldaslove6789
Posts: 957
Joined: Mon Aug 31, 2009 5:52 pm
Location: Near Dallas, TX

Re: Everything You Ever Wanted to Know Part II

Post by boldaslove6789 »

I attached what I've got thus far (also attached is a Visio File). Still working on it. Will post updates as I make them.
You do not have the required permissions to view the files attached to this post.
User avatar
ToneMerc
Posts: 3480
Joined: Sun Apr 26, 2009 3:55 pm
Location: East Coast

Re: Everything You Ever Wanted to Know Part II

Post by ToneMerc »

Seeing this thread made me pull out the Let's Have a Ball bootleg. I've mentioned to Tony before that I would love to do one of these. Maybe now is the time. Anyone interested in a chassis?

http://www.youtube.com/watch?v=CXKQlCQKtIg

TM
steve_p
Posts: 206
Joined: Tue Jun 14, 2011 12:03 am
Location: Easton, Massachusetts

Re: Everything You Ever Wanted to Know Part II

Post by steve_p »

If there is enough interest, I , can draw up a chassis in solidworks and get a quote.
User avatar
ToneMerc
Posts: 3480
Joined: Sun Apr 26, 2009 3:55 pm
Location: East Coast

Re: Everything You Ever Wanted to Know Part II

Post by ToneMerc »

steve_p wrote:If there is enough interest, I , can draw up a chassis in solidworks and get a quote.
Let's get it done, chk PM

TM
User avatar
boldaslove6789
Posts: 957
Joined: Mon Aug 31, 2009 5:52 pm
Location: Near Dallas, TX

Re: Everything You Ever Wanted to Know Part II

Post by boldaslove6789 »

I might be down for one too. Maybe change the Power supply a bit (and not use can caps :) ). Maybe order a small batch of these Pwr trafo's with an Extra 12v Relay Tap?
User avatar
ToneMerc
Posts: 3480
Joined: Sun Apr 26, 2009 3:55 pm
Location: East Coast

Re: Everything You Ever Wanted to Know Part II

Post by ToneMerc »

boldaslove6789 wrote:I might be down for one too. Maybe change the Power supply a bit (and not use can caps :) ). Maybe order a small batch of these Pwr trafo's with an Extra 12v Relay Tap?
Greg, I was thinking sans the cap cans as well. I also was thinking along the lines of a custom Vibrolux(same as D'lite) PT to maximize space. I haven't looked at my docs, but off the top of my head I think this is close to the last max effort Vibrolux style PT that I ordered from Heyboer. This will easily support 50W and 4-5(loop) preamp tubes.

335-0-50-335@300mA
6.3V@700mA
3.15-0-3.15 @ 5A

Revised this would allow one to try just about any duet of pwr tube, use filament resistors and still offer plenty of current for either style of relay supply.

335-0-50-335@300mA
6.3V@375mA
6.3V @ 5.5A

TM
talbany
Posts: 4679
Joined: Tue Mar 28, 2006 5:03 am
Location: Dumbleland

Re: Everything You Ever Wanted to Know Part II

Post by talbany »

Greg, I was thinking sans the cap cans
I would use one of the JJ multistage cans..These are good sounding caps..
40-20-20-20
Greg If you want it I have the Visio Macro of the JJ somewhere..Layout looks almost as good as one of mine.. :lol: :lol:

Tony
" The psychics on my bench is the same as Dumble'"
User avatar
boldaslove6789
Posts: 957
Joined: Mon Aug 31, 2009 5:52 pm
Location: Near Dallas, TX

Re: Everything You Ever Wanted to Know Part II

Post by boldaslove6789 »

talbany wrote:
Greg, I was thinking sans the cap cans
I would use one of the JJ multistage cans..These are good sounding caps..
40-20-20-20
Greg If you want it I have the Visio Macro of the JJ somewhere..Layout looks almost as good as one of mine.. :lol: :lol:

Tony
I learned from the best :) "Says the young grasshopper"

Sure Tony that'd be great, (E-mail me).

I'll try and finish this layout of the actual amp and then I'll make a revised layout with a more "Modern" Pwr supply.

Anybody have a schematic and/or the Pot Values of the borderline? Gil? Bueler...? :lol: :wink:
User avatar
ToneMerc
Posts: 3480
Joined: Sun Apr 26, 2009 3:55 pm
Location: East Coast

Re: Everything You Ever Wanted to Know Part II

Post by ToneMerc »

Getting a quote on 1-5 pieces of a 022723 style PT

Pri:122V
Sec: 338-0-50-338 @ 300mA
6.3V @ 450mA
6.3V @ 6A

TM
talbany
Posts: 4679
Joined: Tue Mar 28, 2006 5:03 am
Location: Dumbleland

Re: Everything You Ever Wanted to Know Part II

Post by talbany »

Greg Here it is..Let me know if you need anything further.. For starters I would use the low plate classic layout for the stack...I'll look over some more shots of it tonight..

Good Luck young grasshopper..

Tony
You do not have the required permissions to view the files attached to this post.
" The psychics on my bench is the same as Dumble'"
talbany
Posts: 4679
Joined: Tue Mar 28, 2006 5:03 am
Location: Dumbleland

Re: Everything You Ever Wanted to Know Part II

Post by talbany »

Looks to have 1m A Vol input
250k 2-35A treble
100k D Linear Mid
250k 2-35A bass w/1k tail
100k-D Linear drive
100k -D Linear level
? Clerostat speed
250kA 2-35 intensity
1M A Master
1k AB Presence
TS switching as per LP Classic
4.7uf 25v bypass all around
Bassman Iron OPT 4 ohm 4K primary
and is that 200 uf on the plates..Sheesh!! Little over kill
.022 V1B coupler
.047 mid
.1 Bass
Tony
" The psychics on my bench is the same as Dumble'"
User avatar
boldaslove6789
Posts: 957
Joined: Mon Aug 31, 2009 5:52 pm
Location: Near Dallas, TX

Re: Everything You Ever Wanted to Know Part II

Post by boldaslove6789 »

Updates and an insanity check :)
You do not have the required permissions to view the files attached to this post.
Post Reply