2만원짜리 진공관 프리앰프가 500짜리가 될 상인가? | 6J1 진공관 프리앰프 제작기

Thank you, TheStuffMade This is a link to TheStuffMade's video. First, I'd like to thank TSM for sharing the data. If you go to "More Videos," you'll find the measurement data for the 6J1 preamplifier modified by TheStuffMade. You may find it helpful to download and view.    • Fever 6j1 Preamp Measurements and Mods. Ho...   I added a few more details to TheStuffMade's modified circuit. I replaced the 1N4007 rectifier diode with a Vishay BYV27-200 ultra-short-cycle recovery diode and increased the heater-smoothing capacitor to 2000uF. The 2.2R load resistor generates significant heat. The kit uses a 2W resistor, but I replaced it with a 3W resistor to reduce heat generation. Originally, I installed an attenuator to adjust the power amplifier's gain, but because it was positioned in front of the transformer, hum occurred. It's a shame... I should've finished it, but the transformer location issue frustrated me. In power amplifiers without volume, hum can occur depending on the situation. You need to adjust the volume appropriately to achieve impedance matching. This is the only way to avoid hum. Please find the lowest price and purchase from a suitable store. ※ Instead of the 6J1 tube, a Russian 6m 1n-EB was used. The 6J1-compatible tubes are 6m 1n-EB/5654/EF95/6AK5/403A/403B tubes. As part of the AliExpress Affiliate Marketing activity, I receive a certain amount of commission for products tagged with "FLYNUT." 6J1 Buffer Amplifier Parts 0. 6J1 Kit 6J1/6J2 Tube Amplifiers Audio Board https://s.click.aliexpress.com/e/_oEf... A good kit at a low price... Great for modifying into a zero-gain buffer. 1. RCA Terminals | CMC Style Gold https://s.click.aliexpress.com/e/_op1... 2. EMI Filter | 25A https://s.click.aliexpress.com/e/_onx... 3. 7-pin Lug Board | ic114 https://www.ic114.com/WebSite/site/sc... 4. Case | Cello Case https://s.click.aliexpress.com/e/_oB7... 5. Transformer | Recycled EI Transformer... If I were to buy a new one, I'd buy an R-core one. I tried it on the X10-D Ali version and it worked well. R-core Transformer 30W Type-R SEC 0-12V https://s.click.aliexpress.com/e/_ooN... 6. Signal Wire | UL 2547 28AWG 2-Core Black | Depending on the RCA wiring, you'll need either a 2-core or 1-core wire. 28AWG or 26AWG is fine. https://s.click.aliexpress.com/e/_oES... 7. 3mm Nut and 10mm Support https://s.click.aliexpress.com/e/_oCq... 8. 3mm, 6mm Hexagon Socket Button Round Head Screws M3x3mm, M3x6mm https://s.click.aliexpress.com/e/_oBR... 9. Power Cord | UL1007 AWG18 | Search for Teflon wire on Naver... "AWG 18-1.0mm is appropriate for high-current wiring, and AWG 20-0.65mm is a good choice for other areas," says Uesugi. "Silicone wire is easy to work with these days... Teflon is preferred for power supplies..." | Silicone wire | https://s.click.aliexpress.com/e/_okI... 10. Vacuum tube | Russian tube 6m 1n-EB used - Russian tubes are clean, Beijing tubes are smooth. https://s.click.aliexpress.com/e/_ooC... 11. Additional capacitor | Panasonic FM 470uF 35V - 10x20 audio-grade, seems reasonably priced. The cathode bypass cap is a 220uF/35V Nichicon FG, a 220pF/100V Weima, and a heater smoothing capacitor. 2200uF/16V is fine. https://www.powerfulsound.com/ 12. The resistor is a domestically produced precision resistor. The kit uses a metal alloy lead resistor... It sticks to a magnet... It contains iron... Its electrical conductivity is worse than copper. 1/4 watt... Use a precision resistor... Replace R1 and 2.2R with a 3W resistor. https://www.ic114.com 13. Ultra-fast recovery diode (BYV27-200) https://www.ic114.com -----------------------------------------------------------------------------------------------------------------------------------------------------