The Titans of Tone: A Comparative Guide to 211, 845, 813, and 811 Vacuum Tubes
The Titans of Tone: A Comparative Guide to 211, 845, 813,...

In the world of high-fidelity audio, few components command as much reverence and mystique as large power tubes. Originally engineered for the demanding world of radio frequency (RF) transmission, tubes like the 211, 845, 813, and 811A have found a second life in the hearts of audiophiles. These "transmitting tubes" are prized for their linearity, power handling, and the unique sonic character they impart on music. They represent a departure from common audio tubes like the EL34 or KT88, operating at dangerously high voltages and requiring specialized amplifier designs.

This article delves into these four iconic tubes, comparing their origins, technical specifications, and sonic signatures. We will explore the classic rivalry between the 211 and 845 triodes, and contrast them with the rugged, high-power 813 beam tetrode and the high-gain 811A triode.

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The Sound of Power: A Deep Dive into Triode vs. Ultralinear Tube Amp Outputs
The Sound of Power: A Deep Dive into Triode vs. Ultraline...

Before we can compare Triode and Ultralinear operation, it's essential to understand the components and principles at play. The magic of these modes happens within the output stage, a circuit whose design philosophy starts at the speaker and works its way backward to the tubes themselves .

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The Heart of Push-Pull Power: Understanding Output Transformer Wiring
The Heart of Push-Pull Power: Understanding Output Transf...

If you've ever delved into the world of tube amplifiers, you've likely heard the term "push-pull" output stage. It's the workhorse design for achieving high power and low distortion. And at the very center of this design lies a crucial component: the push-pull output transformer.

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Brief of Vacuum Tube Models and Replacement
真空管のモデルと交換の概要

ブログでは、いくつかのチューブ モデルを収集して簡単に説明しています。また、簡単な置換を行うこともできますが、詳細については、それらを検索して詳細なパラメータとカーブを取得する必要があります。

IWISTAO 真空管プリアンプ

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Vacuum Tube Selection
真空管の選択

電子管を選択するときは、まず特定のアプリケーション回路の特性と要件に従って、適切な真空管のタイプを決定する必要があります。次に、選択した真空管のパラメータがアプリケーション回路の要件を満たしていることを確認する必要があります。特に、制限パラメータには十分なマージンが必要です。

6Nシリーズ真空管

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