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  • Russian bypass cap test

    I bought 20 of these Russian PIO Caps (K40Y-9 0.1uF 200V) to try as tweeter bypasses.



    I hooked them up to my A/B switch jig for a quick listening test and I think they make noticeable difference that I like....subtle, but it's there.

    I'd like to get some more opinions, so I'm willing to ship a few of these pairs out to folks who have the setups to test these. So......If there is anyone who would like to try these and provide feedback on this thread, please PM me. I'd like them to be shipped back to me after testing, but I'm not in any rush to get them back.
    Bryan K.

    Midwest Audio Club

    Speedster | | The Wildeman | Sean's NLA Towers | , COUGAR II and | Triton | Lithium | J-Boom | Trym MLTL | Docere MLTL

  • #2
    Re: Russian bypass cap test

    If the tests aren't blind, they aren't valid... otherwise, if you think you like them, just install them....
    Line Array: IDS-25 Clone, FE-83.
    2-2.5 Way:
    Zaph Audio's winning entry: ZA5+SB29. - Microliths: RS125+RS28. - Small Bangs: TB W4-1658SB+SEAS 27TBFC/G. - Monoliths: Peerless 830884+SEAS 27TBFC/G.
    3-3.5 Way:Miniliths: SEAS P21/CA21REX+Neo8 PDR+Neo3 PDR. - Megaliths: 2xDayton RS270+2xT-B W4-1337SB+SB29. - ZDT3.5 +: 2xDayton RS180+Dayton RS52+Vifa DQ25. Reflexos: OB 4xDayton RS150 + Neo3 PDR.

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    • #3
      Re: Russian bypass cap test

      Originally posted by fjhuerta View Post
      If the tests aren't blind, they aren't valid...
      Oh, it's there - subtle, probably too subtle for you (or certainly me) to hear, but it's there. :D

      Any empirical evidence of what bypassing caps could possibly do? I've read a few things, but I'd like to see a civil, objective discussion on a board like this...

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      • #4
        Re: Russian bypass cap test

        Originally posted by Applesauce View Post
        Any empirical evidence of what bypassing caps could possibly do? I've read a few things, but I'd like to see a civil, objective discussion on a board like this...
        When it comes to discussing caps, the record here of 'civil' discussions isn't very good - nor is it anywhere else. They all start out with the best of intentions, then typically degenerate into a subjectivist vs objectivist flame war. :(
        Live in Southern N.E.? check out the CT Audio Society web site.

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        • #5
          Re: Russian bypass cap test

          Originally posted by Applesauce View Post
          Oh, it's there - subtle, probably too subtle for you (or certainly me) to hear, but it's there. :D
          Sorry for playing devil's advocate here...

          Are you sure the difference is for the better? Or, is it just "different"?

          Do you think there's a difference?

          Are you listening to the speakers, or will they be for someone else?

          If you do find a difference, or think there is, and the speakers are for yourself, why do you want someone else's opinion? Use them!
          Line Array: IDS-25 Clone, FE-83.
          2-2.5 Way:
          Zaph Audio's winning entry: ZA5+SB29. - Microliths: RS125+RS28. - Small Bangs: TB W4-1658SB+SEAS 27TBFC/G. - Monoliths: Peerless 830884+SEAS 27TBFC/G.
          3-3.5 Way:Miniliths: SEAS P21/CA21REX+Neo8 PDR+Neo3 PDR. - Megaliths: 2xDayton RS270+2xT-B W4-1337SB+SB29. - ZDT3.5 +: 2xDayton RS180+Dayton RS52+Vifa DQ25. Reflexos: OB 4xDayton RS150 + Neo3 PDR.

          Comment


          • #6
            Re: Russian bypass cap test

            208 views and not a single offer to have a pair of these shipped out for testing.....but I see the smarta$$ thread tagger stopped by . Wonder when one-star guy will leave his mark. :rolleyes:

            Anyway, I will do a couple FR readings on my speakers with and without the Russians to see if it can pickup what I think i'm hearing.

            I'm still open to sending these out to anyone who has an external XO and a decent setup for their own testing.
            Bryan K.

            Midwest Audio Club

            Speedster | | The Wildeman | Sean's NLA Towers | , COUGAR II and | Triton | Lithium | J-Boom | Trym MLTL | Docere MLTL

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            • #7
              Re: Russian bypass cap test

              Originally posted by bkeane1259 View Post
              208 views and not a single offer to have a pair of these shipped out for testing...

              I'm still open to sending these out to anyone who has an external XO and a decent setup for their own testing.
              Email sent!

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              • #8
                Re: Russian bypass cap test

                Oh lookie....the one-star bandit dropped by. Thanks jacka$$.

                Anyway, I took pink noise measurements of speakers with and without the Russian bypass caps. This is what I got. I'm still learning how to use True RTA, so if there are any obvious mistakes, please point them out and I will remeasure.

                All I can tell from this graph is that these speakers have a crappy FR. The BLUE LINE is without the bypass and the GREEN LINE is with the bypass. Essentially the same as far as I'm concerned.

                Bryan K.

                Midwest Audio Club

                Speedster | | The Wildeman | Sean's NLA Towers | , COUGAR II and | Triton | Lithium | J-Boom | Trym MLTL | Docere MLTL

                Comment

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