MOD50 AX7

[m4tt]

Have you guys experimented swapping out the Sovtek AX7's in your MOD50 with something else? Best results with the SL2 and TD?

I think it's about time I swap mine out. I'm getting insane feedback/squeal etc on anything with gain.

 

[m4tt]

uhm, anybody?

I really need to get her fired back up. I found some old Fener AX7's and I imagine I can just throw them in there? Again, I'm not completely sure this is the issue but when I swapped the existing AX7's with one another the problem went away temporarily.

I emailed Bruce but I know he's quite busy these days! Are there any MOD50 experts in Southern Ontario?

 

[Buckeyedog]

Are you talking your chassis? Or modules? There are MANY posts about swapping the pre amp tubes. Use the search and you should find many.

I found the best luck with Chinese usually in V1 or Tung Sol Reissues as well. You can keep the Sovteks in V2 of the modules usually, but I usually swap them out/around as well.

In your chassis, the Sovtek LPS is a really good PI tube.

The only module I like JJ's in is the EG5. Darkens it up just a bit.

When in doubt, it's chinese for me.

 

[m4tt]

Are you talking your chassis? Or modules? There are MANY posts about swapping the pre amp tubes. Use the search and you should find many.

I found the best luck with Chinese usually in V1 or Tung Sol Reissues as well. You can keep the Sovteks in V2 of the modules usually, but I usually swap them out/around as well.

In your chassis, the Sovtek LPS is a really good PI tube.

The only module I like JJ's in is the EG5. Darkens it up just a bit.

When in doubt, it's chinese for me.

Chassis only. I'll search again.

Which is V1 and V2?

 

[Buckeyedog]

Oh ok. V1 is the one closest to the input jack. PI is closest to the power tubes. PI many times is a culprit that should be checked on. I'd just go ahead and swap them each in the chassis one at a time and see if you can isolate the cause of the noise.