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Diy reamp kit10/31/2023 The input impedance seen by the instrument is around 1.5 megohms. The input impedance seen by the instrument is around 3.2 megohms.ġ c TUBE mode: The instrument signal is buffered by a tube stage before going to the Jensen transformer. The input impedance seen by the instrument is around 300 kilo-ohms.ġ b FET mode: The instrument signal is buffered by a very high impedance FET stage before going to the Jensen transformer. And you should be comfortable with basic soldering.1 a PASSIVE mode: The instrument signal is routed through a premium quality Jensen transformer, the JT-DB-EPC which lowers the impedance allowing long wires to the preamp. You do not need to know how to read a schematic (though I'll help you in the instructions if you want to learn how the circuit works!) You will need to have decent eyesight and nimble fingers for details, as some of the components are small and require working in relatively tight spaces. You need a cat to monitor your progress and sometimes sit on your instructions. This is a point-to-point wired kit, not printed circuit boards (PCB). I recommend a 40W iron or soldering station and 63/37 tin/lead solder. The only things you need are some typical hand tools such as screwdrivers, wrenches or nut drivers, and you will need a soldering iron and solder. Kits include all of the components you will need: tubes, transformers, resistors, capacitors, chassis, connectors, wire, and more. I want your experience with these instructions to be the best you’ve ever had in a kit Some kits include poorly written instructions that are difficult to follow, and you might get the amplifier to work, but only after frustration, perhaps a few mistakes, and certainly without learning anything new. The instructions are extensive and filled with illustrations or photos, and explanations. If you want to learn, this is the kit for you! Perhaps your next build will extend on what you have learned, and you could customize a circuit or come up with your own designs. This may be the only kit you build, or it may be one stop on a journey of learning and building. You will walk away with knowledge that empowers you. My intention is to show you exactly how the entire circuit works, how each component is selected and the role it plays. My instructions are not simply a step-by-step guide, although you could use them that way. You will truly learn how a vacuum tube amplifier works. You may in the future build a custom design of your own for your next amplifier and put some of your own inspiration into it! Tube amplifiers are both art and science, and I hope you find ways to lean into your creative side. I explain how the layout is selected and important choices about the physical construction to minimize hum and ensure heat dissipation or other considerations. And for those of you who do have tools and skills of design and construction, a kit can serve as your entry into point-to-point building. For each kit, I wanted to create a custom-designed chassis to hold the components functionally but also beautifully in context of your listening environment.įor those who don’t have extensive workshop tools and finishing capabilities, this allows you to have a great-looking amplifier and not settle for an off-the-shelf, generic metal box. This is a showpiece in your home that your friends and family will see and ask about. Great visual design is important to have an end-product you are proud of. How it looks is as important as how it sounds. ![]() ![]() I did not try to build the cheapest possible kit, and I assume you are someone who is willing to pay for quality. I have sourced high quality components from carefully selected manufacturers, for the best possible quality without excessive cost. This work is done for you so you can save time, money, and avoid mistakes. One of the benefits of a kit is that you have everything you need in one box, and don’t need to go through the difficult job of sourcing components, often from multiple suppliers, paying multiple shipping costs and needing to identify precisely the right part from a multitude of options, sometimes testing and needing to try again with a different selection. I have carefully tested these and made adjustments. The circuits used are based on designs that have been used for many years and proven to work very well. You will get high audio quality, with reasonable circuit complexity and cost. After building knowledge and experience (and more amps), I started to think, I could share this with other people who love to learn and make stuff. After building my first amp, I went on a journey to really learn how tube amplifiers work-what is going on with each component in the circuit and why does it work the way it does.
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