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Tube Manufacturing Data

I am planning to scan materials I have on-hand and also provide links where possible to original sources to help the curious better...

ST-70 Gets a VTA Driver Board

The ST70 has always had a pretty great output section but the driver could use a little more attention. From the hard to find 7199 tube...

Klipsch Cornwall cross-over re-build

My Cornwalls are from the early 1980s and as such their signal capacitors were over 30 years old. While they still worked ok, better...

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