Marshall 100w tranny

[Frankie]

Will the marshall 100w (OT) tranny work fine with 6l6 tubes?
Or do I need another tranny in my ods if I will use 6l6 instead of el34?

[talbany]

I would use the Fender Twin style OT sounds better w/6L's IMO
Matching primaries..

Tony

[Frankie]

I would use the Fender Twin style OT sounds better w/6L's IMO
Matching primaries..

Tony

Do I need to change the way the tubes are wired in the power part if I change to 6l6 tubes. Or maybe some other changes.
If you have any kind of wiring layout for el 34 and 6l6, please let me know.
I`m building a ODS now and can`t be able to find any correct information on how to wire the el34, or the 6l6. There seam to be some mix between el34 and 6l6 on ceriatone layout. Or am I mistaking here?

[talbany]

I would use the Fender Twin style OT sounds better w/6L's IMO
Matching primaries..

Tony

Do I need to change the way the tubes are wired in the power part if I change to 6l6 tubes. Or maybe some other changes.
If you have any kind of wiring layout for el 34 and 6l6, please let me know.
I`m building a ODS now and can`t be able to find any correct information on how to wire the el34, or the 6l6. There seam to be some mix between el34 and 6l6 on ceriatone layout. Or am I mistaking here?

Frankie
If you plan on trying both 34's 6L's use this layout for the output section as this will accommodate for either... use the same value resistors ie ..1K / 5.1 or no lower than 4.7 for grids on the 34's.. Good Luck!!
Bias tip jacks optional..
Tony

[Structo]

If you wire pins 1 & 8 together then you can run EL34's and 6L6's.
Be aware that EL34's draw more heater current.

I think typically the Marshall amps run 1.75k on the primary.

4 x 6L6 amps typically run 2k on the primaries.

But the 1.75k Marshall would probably work fine with the 6L6's.

That being said, like Tony mentioned, most guys here use the Fender Twin iron, vintage if you can get is supposed to have more m0jo.

[Frankie]

I would use the Fender Twin style OT sounds better w/6L's IMO
Matching primaries..

Tony

Do I need to change the way the tubes are wired in the power part if I change to 6l6 tubes. Or maybe some other changes.
If you have any kind of wiring layout for el 34 and 6l6, please let me know.
I`m building a ODS now and can`t be able to find any correct information on how to wire the el34, or the 6l6. There seam to be some mix between el34 and 6l6 on ceriatone layout. Or am I mistaking here?

Frankie
If you plan on trying both 34's 6L's use this layout for the output section as this will accommodate for either... use the same value resistors ie ..1K / 5.1 or no lower than 4.7 for grids on the 34's.. Good Luck!!
Bias tip jacks optional..
Tony

I have soldered in 3.3 k on the grids, maybe I should change those to 5,1 then. I will try the el 34 first `cause I have soldered in the marshall tranny, and soldered pin 1 and 8 together. What exactly does the grid resistor change if I go from 3.3 k to 5.1 ?
Sorry for a dumb question, but I like to know. Still a learner.

[talbany]

have soldered in 3.3 k on the grids, maybe I should change those to 5,1 then. I will try the el 34 first `cause I have soldered in the marshall tranny, and soldered pin 1 and 8 together. What exactly does the grid resistor change if I go from 3.3 k to 5.1 ?
Sorry for a dumb question, but I like to know. Still a learner.

Grid resistors are there to prevent blocking distortion which is more prone to occur with the 34's due to their design (impedance) so they require a higher value than the 6L's.. Blocking distortion generally occurs at high volumes..The 3.3K may give you enough resistance there to prevent the Blocking distortion from happening at the volumes your running and the 34's your using.. You can try them if their in there just beware if you start to hear a nasty distortion you may need to increase them..

Like Tom says but also the Marshall OPT has a much larger core than the Fender Twin counterpart which saturates faster changes the character or Mojo and feel compression breakup quality and other anomolies associated with core saturation which begins around gig volumes..

Tony

[Frankie]

So far in the building process.

[Frankie]

have soldered in 3.3 k on the grids, maybe I should change those to 5,1 then. I will try the el 34 first `cause I have soldered in the marshall tranny, and soldered pin 1 and 8 together. What exactly does the grid resistor change if I go from 3.3 k to 5.1 ?
Sorry for a dumb question, but I like to know. Still a learner.

Grid resistors are there to prevent blocking distortion which is more prone to occur with the 34's due to their design (impedance) so they require a higher value than the 6L's.. Blocking distortion generally occurs at high volumes..The 3.3K may give you enough resistance there to prevent the Blocking distortion from happening at the volumes your running and the 34's your using.. You can try them if their in there just beware if you start to hear a nasty distortion you may need to increase them..

Like Tom says but also the Marshall OPT has a much larger core than the Fender Twin counterpart which saturates faster changes the character or Mojo and feel compression breakup quality and other anomolies associated with core saturation which begins around gig volumes..

Tony

Thanks! Will do that! :)

F.

[UltraHookedOnPhonix]

Hey Frankie,

Here's ODS #210, it's running 6L6's with a Marshall Plexi OT. Think it belongs to Santana now FWIW.

[IMG:576:431]http://i205.photobucket.com/albums/bb17 ... ODS210.jpg[/img]