Chromenuts, I still have many parts needed for the original design if you want to complete that. The 2SK369BL Quad is what you want for low output. But this kit overall, even minikit, not appropriate for older version.
We dont offer the 1.3S supply separately to rig back to this unit, which would effectively be mostly the sames setup , sans the ability to alter gain readily.
I was able to edit with google sheets with my iphone without issue. But in general there is not universal editability with google sheets even though it is wide open. Code is imperfect as we all are. If you run into problem and want to get something, private message me and I can update sheet and invoice as needed.
First of all, my deepest gratefulness to Salas and his crew for tremendous work done to released it to the world.
“There are many ways how to skin the cat” and we do have freedom to add or to mod staff easily. The point is to use some integrated solution that flexible enough that will accommodate needs for majority of users. My be it is just my (single person) needs… I do not know that yet… 😊.
Nice things about snubbers that it is totally fine to run board/s if these components are not populated.
C-Multiplier (also can be bypassed if not needed), which was widely explained by Rod Elliott and Dave (on YouTube), will be nice addition to min Vripple without V regulation (and etc..) to almost neglectable level prior umbilical cord long run.
Alex hi. I had also tried advanced 2nd order Cmult in-between the Raw PS and the onboard shunt reg in the previous realization. Results were not palpable enough for me thus I did not adopt it or recommend it as standard part of the phono configuration. Cmult is very useful in many situations but rather not in this one. It proved a robust enough system for raw dc line noise rejection on its own.
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It would force you to compensate with higher R2 R3 values which add their little nVrtHz noise to Q1 Q2. 15mA IDSS would need about 11 Ohm R2 R3 for instance. But they stand in parallel for LMC so not escalating too bad. In circuit Id target with degeneration is roughly 9.5mA each via R2 R3. In other than low internal resistance low output MC carts use it isn't even a theoretical noise concern. For high output MC and MM you would probably have to up R19 and R20 to maintain target gain from being pushed too much. Id current goal is much smaller in the 2-3mA region.
Hi -- just to confirm, for a stereo, high output build, would we need 2x 2SK369 matched pairs ($24 total for 4 transistors) and 2x 2SK170 matched triples ($66 total for 6 transistors), correct? Just don't want to make any mistakes if I decide to pull the trigger on an order.
Thanks!
Thanks!
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Disregard — I now understand reqs for Q1/Q2 with regard to HO/LO builds. I also realized I have the K170s on hand.
Big parts kit is for the main board itself, it does not include RAW PCB or parts. That is separate.
It also does not include R2-3 resistors, and R8,R11 are not included but are with the 2SKXXXBL kits. This is so I can tune the right resistor for the IDSS of these JFETs. It is confusing, but allows for exact customization.
The parts will only cover the boards that are sold. They STILL do not include any C3-C4, which are often one of the bigger expenses for the project. Signal caps are often chosen around specific taste. If resistors are as well, then the minkit only is recommended. The kits are provided to make gathering parts easier for some people, especially overseas. There parts such as IEC, connectors, transformers, wire etc to make a complete kit are needed. If requested, I could expand the BOM spreadsheet for some basic parts, including chassis, to make the whole project for an example. In my world you would still need a drill, other tools etc.
Great, each set of fets is meant for both channels, so one on each line is expected for the most part, unless you want to double the build.