Tube Amp Design and Gourmet Cooking

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  • Опубліковано 31 гру 2024

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  • @danisold
    @danisold 8 місяців тому +1

    Good analogy. I am looking for a budget tube amp for a desk top setting. Really would like your take on the tube cube 7 or any recommendation you have if u can. Thanks!

    • @ChrisBeenDeadInside4WhileNow
      @ChrisBeenDeadInside4WhileNow 8 місяців тому +1

      Im new to hifi and quite young . I'm using a pair of 1959' H.H. Scott 99d integrated tube mono blocks. It seems like a quality preamp can easily fetch over 1500 dollars these days obviously they can be had for cheaper but you got to do some digging. I bought my Scott mono blocks for $300 and now I realize that was an amazing deal and I probably won't ever get a deal like that again That was my entry into this. I got them from an old Vietnamese man who didn't hardly speak English because he was moving back to Vietnam from Vancouver Washington I live in Portland Oregon. I just feel really lucky to have them honestly The fact that they were also service before I bought them they're easily worth twice what I paid for them. But my point being is is you can really find some good deals if you continue searching around and looking!

    • @Lancaster_Hi-Fi
      @Lancaster_Hi-Fi  8 місяців тому +2

      I looked at the online review linked by the seller. If it were my own build, I would not consider the frequency response acceptable. I would consider it defective. It's -3 dB at 10 kHz, -7 dB at 20 kHz. The high frequency roll off is so extreme, it makes me wonder whether they intentionally made it stereotypically "tubey." Or maybe they repurposed a guitar amp design. That said, people seem to enjoy it, at least until they find the music it can't reproduce well.

    • @Lancaster_Hi-Fi
      @Lancaster_Hi-Fi  8 місяців тому +1

      Yeah, Chris, you scored big time! You effectively got those for the price of the iron (or less). For example, a pair of the Dynaco OPTs used in the SCA-35 and ST-35 is going for $300 on ebay these days, when you can find them at all. I don't know whether the Scott iron is as good, but I've read good things about it.

    • @Lancaster_Hi-Fi
      @Lancaster_Hi-Fi  8 місяців тому +2

      I'm using my first build of the DG-SE1 on my desktop with a (cheap) Soundavo DAC/preamp and ADS B7 speakers. It uses essentially the same tube set as the TubeCube 7 but with a traditional power transformer, choke, and tube rectifier in the power supply. Its response is absolutely table-flat out to 20 kHz. It's built on a Magnavox chassis pulled from an old console. Following the analogy of the video, I consider it the sort of cooking that requires skill to make something amazing with run-of-the-mill ingredients. (Except for the end handles and faceplate made of cherry.) I have a later build (with Oregon ash end handles and faceplate) on sale for $1K now. Of course, my cost of materials is much less, but my labor, including hours to cut, carve, and finish the wood, has to be worth something. I might advise you keep an eye out for an old tube stereo console. They're getting scarce, but if you could find a working console for under $100, you could pull the chassis and, with a little modification, have a tube amp superior to the TubeCube for very little money. Later, if you feel adventurous enough to try more extensive modifications, you could have an amp as good as mine for under $300 all in. (It wouldn't be as pretty as mine, of course!)

    • @danisold
      @danisold 8 місяців тому

      I appreciate your advice on the tube cube and the magnavox! Do you have a website for your tube gear? Anyways, I really enjoy the channel. Thanks for taking the time.

  • @CollectingRetro
    @CollectingRetro 8 місяців тому +1

    I hope you try a variety of coupling caps for your build. VCap ODAM are eye opening if you get the chance to try them. Even better would be transformer coupling, IMHO. Some like direct coupling, but it can get tricky and have issues.

    • @Lancaster_Hi-Fi
      @Lancaster_Hi-Fi  8 місяців тому

      I visited the website. No data sheets! WTF? Sorry, not yelling at you. The lack of data sheets for high-dollar caps astounds me. They might as well boast that they add "essence of mojo" to the oil impregnating the capacitor.

    • @CollectingRetro
      @CollectingRetro 8 місяців тому

      @@Lancaster_Hi-Fi What data are you looking for? Looking at official datasheets for a Vishay MKP PP cap, there is not much more information that seems useful. If the quality and performance is good, trust your ears.

    • @Lancaster_Hi-Fi
      @Lancaster_Hi-Fi  8 місяців тому

      But a typical WIMA, KEMET, or Vishay film cap costs less than a dollar. If I'm going to pay $70 per, I want data, not user testimonials, because those are subjective. I don't even trust myself. My ears are one thing, but the human brain plays all sorts of tricks!

    • @CollectingRetro
      @CollectingRetro 8 місяців тому +1

      @@Lancaster_Hi-Fi I get it, but the differences are obvious to me in my system. I've changed caps dozens of times and they all have different characters. IE, I can't stand any Audio Note caps in my system, I've used their caps and had their high level DAC, not my taste, LOL. Not all systems will reveal the difference also. Try what you want and hopefully you like it, that's all that really matters.

    • @Lancaster_Hi-Fi
      @Lancaster_Hi-Fi  8 місяців тому +1

      So now you have me combing the interwebs for tests!