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Скачать с ютуб E04 - Blue-line 1973 (or so) Ampeg SVT: Quick Preamp Repair; Set the Bias, Balance, and Hum. в хорошем качестве

E04 - Blue-line 1973 (or so) Ampeg SVT: Quick Preamp Repair; Set the Bias, Balance, and Hum. 4 года назад


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E04 - Blue-line 1973 (or so) Ampeg SVT: Quick Preamp Repair; Set the Bias, Balance, and Hum.

NOTE: Press "SHOW MORE" for the linked Table of Contents! This early SVT, owned by a back-line company, came in with channel one cutting out intermittently. They need the beast back ASAP. We quickly diagnose and repair the causes, and then bias the output, balance the 'push' wit' da 'pull,' set the hum balance, and ship it! 2:17 - Open the back 5:44 - Power-on and diagnostics 7:55 - Tear down 9:38 - PreAmp inspection 12:25 - Cleaning tube sockets and circuit board 13:20 to 14:30 - Messed up fade - kind of spacey though... 14:55 - Identifying the fault 15:25 - Discovery and repair 17:36 - Repair validation 19:56 - High temperature validation 21:11 - Tap testing and reassembly 24:40 - Bias adjustment 27:40 - Driver balance adjustment 30:20 - Hum balance adjustment 31:45 - Final testing 32:45 - Power output validation

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