My friend just did this upgrade too. After the upgrades, he said, and I quote:
"The vinyl just comes alive in this thing now. I’m embarrassed with how it sounded before [on my old speakers] compared to now. It was ROUGH. That’s basically a Victrola relative to what it is now.
It’s balanced, smooth, clear, dynamic, and not at all harsh.
And the cabinets are just producing this kind of bass I’ve never really experienced in a loud speaker. I feel like it is what I have been dreaming of.
I just didn’t think I’d have it so soon."
Here's some pics of the work we did:
In addition to the Sonicap upgrade, we bypassed all caps with Miflex copper foil. For cabinet stuffing, in addition to the Norez, we used lambswool.