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Cascade Tubes

It's All About the Glass

Cascade Tubes

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Tag Archives: 6CA4

Another JJ Bites the Dust

Posted on June 1, 2025 by Matt
2

While working in my office today I suddenly realized that the music had stopped. Looking at the Source Selector Preamp showed that the output levels were not moving. A little investigating revealed the culprit.

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Posted in Uncategorized | Tagged 6CA4, EZ81, failure, JJ, rectifier | 2 Replies

Completed Tube Assembly

Posted on June 26, 2023 by Matt
1

I got some time today to finish out the vacuum tube assembly of the source selector unit.

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Posted in Uncategorized | Tagged 12AU7, 6CA4, Chassis, preamp, ssu, vacuum tubes | 1 Reply

Progress on the Source Selector

Posted on December 4, 2022 by Matt
5

Over the last several days I’ve made some progress on the layout of the new project. This is about the point where it’s time to start looking at wood.

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Posted in Uncategorized | Tagged 12AU7, 6CA4, meters, preamp, Source | 5 Replies

Early Morning Lightning Storm

Posted on November 21, 2017 by Matt
1

So, this morning, I got a little reminder about the nature of the technology we all use. I currently have the 6EM7 Vertical Amp in my office at home connected to my computer sound card. When I reached over and turned it on this morning I got an interesting surprise.

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Posted in Uncategorized | Tagged 6CA4, Electro Harmonics, EZ81 | 1 Reply

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Articles of Note

  • “Experts” 0
  • A Note on Feedback 0
  • A Tale of Two Tubes 0
  • About that Volume Control 0
  • About that Volume Control – Part II 0
  • About Tube Books 0
  • Another Note on Feedback with Black's Original Paper 0
  • Audio Heresy – Lampizator 0
  • Audio Power – Wikilink 0
  • Cathode Bypass and Frequency Range 0
  • Cathode Bypass and Frequency Range, Part II 0
  • Component Tolerances & Modern Manufacturing 0
  • Consequence of The Quest for 20Hz Roll Off 0
  • Distortion Misunderstood 0
  • Engineering! 0
  • How Amp Technology Affects Volume and Power 0
  • How Much Audio Bandwidth? 0
  • Identifying a Mystery Tube 0
  • In Praise of the Album 0
  • Low Frequency Output Transformer Performance 0
  • Matt's Grounding Philosophy 0
  • Sensitivity and Amp Power – Chuck Hawks 0
  • Talking about SETs 0
  • The Quest for 20Hz Roll Off 0
  • Toroids and “Shorted Turns” 0
  • Tube Sound – Power Stage Topology 0
  • Tube Testers 0
  • Understanding Speaker Power Ratings – Eminence 0
  • Volume Controls and High Frequency Response 0
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