How to find and install a replacement power transformer for your tube amplifer

Comments · 61

• GA

  @garybevis8691 · 8 years ago (edited)

  Ok, right at the <a href="https://www.youtube.com/watch?v=iSAP2FJh5DI&amp;t=885">14:45</a> mark you make a significant error in sizing, (3-7/16&quot;) 7/16&quot; is in fact 5/16&quot; of an inch larger than 1/8&quot; off by a factor of 5 times. &nbsp;Or 3.4375&quot;-3.125&quot;=0.3125&quot; ; 1/16&quot;=0.0625 5/16&quot;=0.3125&quot;(sorry it&apos;s the engineer in me). &nbsp;I&apos;m glad you had room on that chassis for the actual difference. &nbsp;It looks great and sounds good too.

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• NI

  @nigel900 · 4 years ago

  I’ve upgraded to, and used Mercury Magnetics transformers for several years now, and thought they are expensive, they are superior to almost all others… and they make transformers for EVERYTHING! &nbsp;Great video. 👍🏻

• LA

  @larryshaver3568 · 6 years ago

  very clean- sounding, that new transformer really did the trick

• WA

  @wa2mo · 8 years ago

  Really enjoyed the video... very informative.... &nbsp;I also had Gary from TRS rewind a C-Core transformer from my Ten Tec Titan 425 Linear Amp and it was much cheaper than buying new and he does great work. &nbsp;Keep the videos coming.

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• DA

  @danielthomas3057 · 8 years ago

  The first filter cap should have a tie point to secure the positive lead where it is soldered to the red wire from the 5U4. Looks like a short to chassis could easily happen. Good to see both of these Maggies restored to working condition. I am looking forward to the KT88 build. Have re watched the 807 amp build a few times through. Great work, always love it!

  1

• MA

  @materialsguy2002 · 8 years ago

  Very helpful information for sourcing out new iron, thanks Mark.

  1

• MI

  @mikeh2599 · 8 years ago

  Excellent video, takes the mystery out of finding the right transformer

• NO

  @normanwalz8636 · 8 years ago

  Thanks for this video and looking forward to the single ended amp project

  1

• JP

  @jp040759 · 8 years ago

  love your videos. &nbsp;Always look forward to next one.

• CO

  @coldfinger459sub0 · 8 years ago

  Thanks for all your videos and recommended websites for components. The last two years I’ve been practicing with low-voltage amplifiers three solid-state two low-voltage headphone tube amplifiers. I’m about to build my first preamplifier. Then I’ll take a shot at the high-voltage high dollar DIY tube amplifier build. Your knowledge you pass on to us will remain on the Internet forever. 👍

• MF

  @mfr58 · 8 years ago

  Thanks Mark. Looking forward to the SE KT88. M

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• MO

  @mobicus1 · 8 years ago

  Thanks for this useful video! Great stuff!