So I've decided when I rebuild the ST70 I picked up, I'll use the VTA driver board. I considered buying he "Rebuild" kit for the ST70 from tubes4hifi, but instead I think I'm going to get the VTA board there, and the cap and speaker terminals from dynakitparts. Anyway, here is a pic of the VTA board beside the original:
http://www.tubes4hifi.com/bob2.htm
Does the VTA board eliminate the need to put the diode in to replace the selenium rectifier (ie, it's now on board of the VTA)? I can't find the diode in there anywhere on the bottom of that amp (oddly, the diode and terminal strip are shown further down on the page, adding to my confusion).
I found the instructions and it looks like the diode and strip is gone with VTA mod.
Also, when buying the upgraded PIO caps, do the others get upgraded to Orange Drops?
Does the 3 lug terminal strip with the yellow caps come with the VTA kit as well?
The instructions say to reuse the strip and caps. I think I'd rather have a new strip and caps.
I looked on the site for instructions on the VTA board but couldn't find them. FOUND THEM. Duh, look at the bottom of the page. I was looking with the original manuals.
My intent is to "gut" the amp and basically start over building a ST70. New Sockets, switch, cord, screws, etc. Is there a set of instructions to build the ST70 with VTA board (and posssibly triode/pentode switch) all at once, or will I need to mix/match instructions? Looks like it's pretty much covered in the instructions I found.
Thanks,
Jason
http://www.tubes4hifi.com/bob2.htm
Does the VTA board eliminate the need to put the diode in to replace the selenium rectifier (ie, it's now on board of the VTA)? I can't find the diode in there anywhere on the bottom of that amp (oddly, the diode and terminal strip are shown further down on the page, adding to my confusion).
I found the instructions and it looks like the diode and strip is gone with VTA mod.
Also, when buying the upgraded PIO caps, do the others get upgraded to Orange Drops?
Does the 3 lug terminal strip with the yellow caps come with the VTA kit as well?
The instructions say to reuse the strip and caps. I think I'd rather have a new strip and caps.
I looked on the site for instructions on the VTA board but couldn't find them. FOUND THEM. Duh, look at the bottom of the page. I was looking with the original manuals.
My intent is to "gut" the amp and basically start over building a ST70. New Sockets, switch, cord, screws, etc. Is there a set of instructions to build the ST70 with VTA board (and posssibly triode/pentode switch) all at once, or will I need to mix/match instructions? Looks like it's pretty much covered in the instructions I found.
Thanks,
Jason
Last edited by j4570 on Mon Sep 06, 2010 4:58 pm; edited 1 time in total