AUDIONOTE DIY WIRE DRIVER
Of the driver stage is satisfactory, the single triode power amplifier possesses an unbelievably law distortion characteristic, even in theĪbsence of negative feedback.
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In particular, the large triode vacuum tube functions mare perfectly when dealing with low level signals, allowing the tone quality to be clear and distinct. "stray electrons" around the heater is greatly decreased, thereby allowing the vacuum tube to work When high plate voltage is employed and the pitch of the grid is made more coarse, the amount of This type of vacuum tube is very sturdy and promisesĪ high vacuum integrity, since it was originally intended for demanding commercial and military applications. "pitch" is used for the grid winding geometry. Larger diameter wire is used for the heater, the grid to heater spacing is considerable, and coarse
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TheĮg-Ip characteristic of the 211 and its brothers is more linear than most other power However, it is only large triodes like the 211 that provide the best performance that vacuum tubes can offer. The wiring so as to prevent hands from getting electric shock if one reaches into the amplifier. In manufacturing the amplifier, we must pay utmost attention to moisture-proofing the chassis and proper insulation of The power supply circuit cannot be normally designed, since the supply voltage required for the 211 tube must be approximatelyġ000V. This type of amplifier is a challenge from the viewpoint of the Perhaps this is the reason why thereĪre only a few amplifiers that employ the 211 tube today.
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The 211 may appear old-fashioned and unsophisticated to high-brow maniacs for audio equipment. T he 211 creates a formidable impression because of its shape. Article by Hiroyasu Kondo-san, Audio Note