Posts tagged with: Choke

Universal Tube Power Supply Unit Design Plan

As a DIY, I think it’s important to have a dedicated power supply module. I have tried several design, but finally got tired if I have to finalized the build into something complete. Not to mention that space might be...
Continue Reading →

Preparing the Layout…

Yes, I’m kind a lazy guy when it comes to realization (or finalization) of my DIY project. But I think I’m gonna (or I have to) be serious to finalize this… Well, at least I have finished the component layout....
Continue Reading →

Potting the Lundahl LL1673 Choke [Subjective Listening Test]

Please read here, here, here, here, and here before you continue reading this one. I believe that could give you an overview of this project. Finally, we come to the day to have a listening test of this project. The...
Continue Reading →

Potting the Lundahl LL1673 Choke [Measurement]

Finally, the Lundahl potting project has been completed. Now it’s the time to give initial measurement of the project. First is very simple testing, the inductance test. Next week, we shall have a listening test with this Choke. The inductance...
Continue Reading →

Potting the Lundahl Choke [Part 4 – Completed]

After around 12 hours and everything is cooled down, I manage to see the final result of my potting project. It seems like the pain has been well paid. The result is smooth as a delicious tofu. But after a...
Continue Reading →

Potting the Lundahl Choke [Part 3]

If you haven’t read the first two post, then I would suggest to visit here and here first. This is the 3rd experiment, and should be final one. I have done several experiments previously (although not published in detail here)....
Continue Reading →

Potting the Lundahl Choke [Part 2]

Please go back here if you haven’t read the first article. On this second part, I’m about to create the potting ingredients to pot my Lundahl choke. I have several experimental ingredients, so some of them might not be exposed...
Continue Reading →

Potting the Lundahl Choke [Part 1]

It’s been a while since this idea came to my head few months back. Now it’s time to make it happens. As you might also know that Lundahl is one of the good transformer maker. They use their own C-Core...
Continue Reading →

Trio Tamura Choke

Tamura’s iron is not new kid on the block. They have been here for a quite long time. Even Westerner also admits the quality of Tamura (well, we can see some contenders from West side but hardly to beat Japanese...
Continue Reading →

Hashimoto C-25-150CH Choke Input and Tamura A-4004 Choke

As  my Sowter Choke Input was acquisitioned by my friend. Then I have to consider some replacement. Actually my friend was interested with Hashimoto or similar, but as most of the Choke Input was designed for power amp, instead of...
Continue Reading →

Aikido PreAmp Upgrade: Sowter Custom Choke Input 30H / 75mA

This is the final choke upgrade that I’ve been waiting for quite long time. After some discussion on the phone with Brian (1 day before his birthday), finally I finalized the order. Custom made from Sowter UK, a Choke specified...
Continue Reading →

Aikido PreAmp Upgrade: Electra-Print Custom Choke 30H / 75mA

Not just Lundahl here, I also ordered custom choke from Jack/Electra-Print. I contacted Jack and asked him to create a Choke, with requirement to be placed in Input position. He offered me a VPI technique which (according to him) enough...
Continue Reading →