An update on my continued success with resonance control experiments.
First, as I mentioned earlier above, I had excellent luck with one Stillpoints LPI which I just happened to have lying around that I placed between V8, V6 and V2. With this knowledge I tried adding a second LPI, this new one now perched on the right edge of the VAC's chassis, just on the right of and slightly above V7 (rightmost driver 12AU7) and below V11 (rightmost KT88). This second LPI also had a very positive effect, moving the sound further along the path that the first LPI took - i.e., more smoothness/sweetness in vocals, elimination of edge, even more coherent and deep soundstage.
Second, I switched from the old version of Tubemonger's 9-pin socket savers for all of the 12AU7s and 12AX7s in the 160iSE to his new ones based on the McMurdo sockets. The new ones are much better. These things allow you to swap tubes without wear and tear on the VAC sockets, but importantly they have distinct sonic benefits too. The sound thickens in a good way, filling out with more body and color. Also definitely recommended.
And BTW as I mentioned before I also use Herbie's tube dampers on all tubes. I really like the effect of those too.
As Mike Oltz remarked to me recently, I have been learning that all sorts of vibrations are the enemy of good sound!
First, as I mentioned earlier above, I had excellent luck with one Stillpoints LPI which I just happened to have lying around that I placed between V8, V6 and V2. With this knowledge I tried adding a second LPI, this new one now perched on the right edge of the VAC's chassis, just on the right of and slightly above V7 (rightmost driver 12AU7) and below V11 (rightmost KT88). This second LPI also had a very positive effect, moving the sound further along the path that the first LPI took - i.e., more smoothness/sweetness in vocals, elimination of edge, even more coherent and deep soundstage.
Second, I switched from the old version of Tubemonger's 9-pin socket savers for all of the 12AU7s and 12AX7s in the 160iSE to his new ones based on the McMurdo sockets. The new ones are much better. These things allow you to swap tubes without wear and tear on the VAC sockets, but importantly they have distinct sonic benefits too. The sound thickens in a good way, filling out with more body and color. Also definitely recommended.
And BTW as I mentioned before I also use Herbie's tube dampers on all tubes. I really like the effect of those too.
As Mike Oltz remarked to me recently, I have been learning that all sorts of vibrations are the enemy of good sound!