I started my last ODS-50 build. Transformers used 1202-118 PT 784-139 OPT C1999 Choke
Thank you Jason for the chassis and board set.
Last ODS-50 build
Moderators: pompeiisneaks, Colossal
Last ODS-50 build
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Re: Last ODS-50 build
Looks good! Are those 1W Beyschlag resistors?
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Re: Last ODS-50 build
1W Beyschlag resistors? No 1 watt Piher's 
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dcribbs1412
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Re: Last ODS-50 build
Looks like another great sounding build is coming!
Like to hear how you like the feel/tone with the higher 220uf PA filtering?
Also is this your first with Marshall iron and 34's?
D
Like to hear how you like the feel/tone with the higher 220uf PA filtering?
Also is this your first with Marshall iron and 34's?
D
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norburybrook
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Re: Last ODS-50 build
dcribbs1412 wrote: ↑Tue Mar 27, 2018 5:57 pm Looks like another great sounding build is coming!
Like to hear how you like the feel/tone with the higher 220uf PA filtering?
Also is this your first with Marshall iron and 34's?
D
I've used 220uf on both my #102 50w builds and they both sound great. I did experiment with the last one and use 100uf but in all hoensty I couldn't hear a difference so I swapped them back to the 220 as they matched the other F&T caps on the board
M
Re: Last ODS-50 build
This is my 4th ODS build with EL34's So far my favorite is a 50 watt with KT77's
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Re: Last ODS-50 build
Nice looking build Steve!
Eric
1949 Zenith, Zenith Toggle Recoil, Zenith 55 & 440
1949 Zenith, Zenith Toggle Recoil, Zenith 55 & 440
Re: Last ODS-50 build
Nice build for sure.
The PT and OT look impressive lots of iron there.
Mark
The PT and OT look impressive lots of iron there.
Mark
Re: Last ODS-50 build
Thank you Dr. Eric and Mark. I'm shooting for 471volts B+1 will see the JTM-45 PT in the other build achieved that voltage.
Have a great day, Steve.
Have a great day, Steve.
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dcribbs1412
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Re: Last ODS-50 build
67plexi wrote:Thank you Dr. Eric and Mark. I'm shooting for 471volts B+1 will see the JTM-45 PT in the other build achieved that voltage.
Have a great day, Steve.
Thx for the info
May try a build with Marshall iron
and more filtering
D
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Re: Last ODS-50 build
Well the 1202-118 has only 446 volts B+1 no load 
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Re: Last ODS-50 build
I think I'm loosing it after wiring up the power supply now I have 467 volts B+1 #183 was 465 volts B+1
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dcribbs1412
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Re: Last ODS-50 build
Looking good[emoji3]67plexi wrote:I think I'm loosing it after wiring up the power supply now I have 467 volts B+1 #183 was 465 volts B+1
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Re: Last ODS-50 build
Got my bias voltage adjusted 28 to 44 VDC range it's going slow. Next adjust the FET then wire the controls and so on.
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dcribbs1412
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Re: Last ODS-50 build
Nice work!
Builds going slower here too
D
Builds going slower here too
D