|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
|
|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
I am currently using the VTA boards set up for the 12AT7 in my Dynaco MKIV's. There are a number of resistors that need to be changed when you configure the boards for the 12AU7. I have a few lists that I was sent by VTA, but there are differences in values between the lists. I would preface this by saying don't suggest going to Dynaco Tube Audio Forum, or VTA, That is not an option, and that's all I am saying. The resistors, and one capacitor in question are:
R11-12 68K changes to a 33K 2w or 36K 2w
R13-14 150K " " " 33K 2w or 36K 2w or 47K .5w
R15-16 7.5K " " " 6.8K .5w or 6.8K 2w
R17-18 12K .5w " " " 12K 1w or 12K 2w
C13 15 is it 680pF or 470pF
As far as the watts rating, going bigger can't hurt you, just cost a little more, and are a little bigger. The values I was told are flexible, but I discovered that is not true in all cases. I am interested in hearing what other MKIV owners, using the VTA/12AU7, are using in these resistor and capacitor locations. Thanks for your help.
This post is made possible by the generous support of people like you and our sponsors:
Topic - Looking for Dynaco MKIV owner's using the VTA boards set up for 12AU7 lo-gain - Michael Norona 05:29:09 03/17/12 (9)
- RE: Looking for Dynaco MKIV owner's using the VTA boards set up for 12AU7 lo-gain - Neff 19:49:27 03/17/12 (0)
- I use the VTA low gain board in an ST-70, so there is no difference......... - viridian 10:03:57 03/17/12 (7)
- RE: I use the VTA low gain board in an ST-70, so there is no difference......... - Michael Norona 10:18:12 03/17/12 (6)
- RE: I use the VTA low gain board in an ST-70, so there is no difference......... - Michael Samra 16:27:55 03/17/12 (5)
- "panasonics are one of my favorites of the film caps at a reasonable price".... - Cleantimestream 21:24:53 03/17/12 (0)
- Agree with my guru Mike on the K40Ys. And Mike I hope that you feel better......... - viridian 19:14:13 03/17/12 (3)
- RE: Agree with my guru Mike on the K40Ys. And Mike I hope that you feel better......... - Michael Samra 02:09:16 03/18/12 (2)
- Nice build Mike! And you are right there is plenty of room. nt - viridian 08:47:01 03/18/12 (1)
- RE: Nice build Mike! And you are right there is plenty of room. nt - Michael Samra 13:21:02 03/18/12 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
