Help With Tube Placement

[cowardm]

So I have a Lynch box with EL34Ls and I'm debating on where to put the preamp tubes.

1) Which makes a bigger difference the preamp tubes in the modules or the preamp tubes in the actual amp?

2) Where do you think I should put them and in what positions (between the amp and 2 modules that's 7 different positions). I have a JF modded Blackface (more Fendery, cleaner) and a JF modded SL+ (DSL type, loads of gain with a bass and mid switch installed).

My tubes:
2 JJ ECC83S 12AX7
2 Sovtek 12AX7WA (I'm not crazy about these and have heard others feel the same, so I'd just as soon not use them at all)
2 Tung Sol 12AX7
1 Electro-Harmonix 12AT7EH
1 Ruby 12AX7A with an HG (high gain?) label on it
1 Mesa 12AX7A

Here's what I was thinking:

Blackface - I like thick cleans
V1 - EH 12AT7
V2 - Tungsol 12AX7

SL+ - I like thick high gain (not very 80s though, more modern)
V1 - Ruby 12AX7A
V2 - Mesa 12AX7A

LB - I want clean cleans and high gain distortions, so I wouldn't say put a high gain tube in V1 or a particularly clean tube here either.
I want to put the remaining Tungsol 12AX7 and the 2 remaining JCC ECC83S in there. Any suggestions on order?

Does this all seem like it would sound good or does someone else have another opinion?

 

[Shinozoku]

Stick that Tung Sol in the Amp's V1, and use the 12AT7 and a JJ in the Blackface. That sounds like a good setup for the SL+ for now. The biggest improvement you can really make, is probably a 5751 or a high quality 12AT7 in the Phase Inverter. Makes a HUGE difference.

 

[cowardm]

A 5751 or 12AT7 in the actual amps phase inverter? That would surely lower the gain on the SL+. I'm fine with less gain if it sounds THAT much better, but does it really?

 

[kylendm]

No, it hardly lowers the gain but it tonally adds a lot to your amp. Its in the PI of the amp itself not the module. It will also cut down on a lot of feedback you may be getting. I got one in mine and i love it. I also play a lot of metal/hardcore/death metal/jazz(a lot of jazz ). The you will hardly notice the difference gain wise.

 

[Shinozoku]

I didn't notice a drop in gain. What I did notice was in increase in overall clarity, and I got more chime in my cleans and more grit in my high gainers. I also noticed it made my stock Ultra Lead usable.

 

[eyeball987]

Which spot is the phase inverter? I want to try this in my RM50.

 

[JKD]

Which spot is the phase inverter? I want to try this in my RM50.

closest pre-amp tube in line with the power tubes.

 

[eyeball987]

Which spot is the phase inverter? I want to try this in my RM50.

closest pre-amp tube in line with the power tubes.

That is what I thought. Mine came with EH's in the amp. I should have a Jan GE 5751 around here somewhere.

 

[wakeguitar]

Which spot is the phase inverter? I want to try this in my RM50.

can someone clarify what were talking about here? Power amp tube or a tube NOT in the preamp?

I see four tubes in the back of my rm100 it's not one of those is it?

thx

 

[cowardm]

There are 4 big tubes (power tubes, probably 6L6s) and then 3 little metal cylinders (about half the size of the power tubes). Under those are you preamp tubes.


What's the difference in a 5751 versus an 12AT7?

 

[JKD]

Which spot is the phase inverter? I want to try this in my RM50.

closest pre-amp tube in line with the power tubes.

That is what I thought. Mine came with EH's in the amp. I should have a Jan GE 5751 around here somewhere.

I do not like EHs anywhere in the amp...at a push I might use one in a clean module if I'm looking for sterile.

 

[eyeball987]

Which spot is the phase inverter? I want to try this in my RM50.

closest pre-amp tube in line with the power tubes.

That is what I thought. Mine came with EH's in the amp. I should have a Jan GE 5751 around here somewhere.

I do not like EHs anywhere in the amp...and at a push I might use one i na clean module if I'm looking for sterile.

I am going to do some tube shopping next week. I have TAD 34's in the amp now and I have no idea how old they are so I am going to pick up a pair of those, maybe some 6550's just because I keep hearing people talk about them, and then some random pre's.

What do you like in your MTS?

 

[JKD]

Which spot is the phase inverter? I want to try this in my RM50.

closest pre-amp tube in line with the power tubes.

That is what I thought. Mine came with EH's in the amp. I should have a Jan GE 5751 around here somewhere.

I do not like EHs anywhere in the amp...and at a push I might use one i na clean module if I'm looking for sterile.

I am going to do some tube shopping next week. I have TAD 34's in the amp now and I have no idea how old they are so I am going to pick up a pair of those, maybe some 6550's just because I keep hearing people talk about them, and then some random pre's.

What do you like in your MTS?

Go to pre-amp tubes are screened chinese 12ax7 r8 or r9...whether they're screen by a tube vendor or re-labelled (Ruby etc.) or the new Tung Sol RIs (the gold ones sound great)

If I'm looking for something different..go for a long plate tube like the Mullard RI 12ax7/ECC83.

Power tubes...I'm all over the map. =C= EL34, JJ 6L6, Mullard RI EL84 (Yellowjackets), SED 6550Cs

 

[wakeguitar]

There are 4 big tubes (power tubes, probably 6L6s) and then 3 little metal cylinders (about half the size of the power tubes). Under those are you preamp tubes.

tyvm

 

[Julia]

What's the difference in a 5751 versus an 12AT7?

IMO 5751 is just less noisy than a 12AX7. The 12AT7 will actually reduce signal level.