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  1. #1

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    Default possible 2.3tl upgrade

    I am looking to upgrade the x-overs on my 2.3tl's and was going to use all Dayton Metallized 1% Polypropylene. In some cases I will have to use two and piggyback to get exact values as can be seen in the pics. I am either going to use Dayton 20 ohm 10 watt non inductive resistors or Mills 20 ohm 12 watt non inductive resistor in place of the stock 22.5 ohm, I will use the Mills if it will make a big difference. I understand that you don't need the 750pF piggybacking the caps like on stock when you use good caps like these if thats correct? I put a picture of the unaltered and my proposed altered pic. Any thoughts advice would be appreciated.


    Attachment 46450

    Attachment 46451

  2. #2

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    Sonic Craft carries Mills 22R0 resistors.

    I would also use something better than Dayton in the tweeter circuit, check out Sonic Caps or Claritycaps.

    And you're correct, the bypass(piggyback) caps are not replaced.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

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    Thank you, the thing is right now I might have enough to do this, just over $100 as money is super tight right now. and was wondering if this would be a big upgrade over stock. if not it will have to wait.

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    I would take the bypass cap off the 16uf cap in the tweeter circuit also. Mills does make a 22 ohm resistor. PE may not carry it but sonicraft and partsconnexion do. Not sure on the Dayton values, didn't check. Have fun!
    "The secret of happiness is freedom. The secret of freedom is courage." Thucydides

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    Quote Originally Posted by Disc Jockey View Post
    I would take the bypass cap off the 16uf cap in the tweeter circuit also. Mills does make a 22 ohm resistor. PE may not carry it but sonicraft and partsconnexion do. Not sure on the Dayton values, didn't check. Have fun!
    Yeah I was going to but I have to use a 15uF and piggyback a 1uF to get 16uF, and get rid of the bypass.

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    Ahh, got it. In that case you might want to use a 12/4 combo instead of a 15/1.
    "The secret of happiness is freedom. The secret of freedom is courage." Thucydides

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    Quote Originally Posted by Disc Jockey View Post
    Ahh, got it. In that case you might want to use a 12/4 combo instead of a 15/1.
    whats the difference? I have to do that two other places on the low end any suggestions there?

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    In general practice, it's best to keep the values of the caps as close to each other as possible. I don't know how critical it is but that's the advice I've always been given.
    "The secret of happiness is freedom. The secret of freedom is courage." Thucydides

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    so just divide in half or will 1,2 or 3uF variation really make a difference?
    Last edited by zarrdoss; 02-07-2010 at 06:08 PM.

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    Quote Originally Posted by zarrdoss View Post
    so just divide in half or will 1,2 or 3uF difference really make a difference?
    Using a single value in the HF circuit is best. If a single cap isn't available, divide by 2.

    If money is tight, I'd wait and save up to do it right the first time.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

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    I've always tried to divide in half, or as close as reasonably possible. I think as the values get further apart, the lower value cap acts more and more like a bypass cap. I have absolutely no idea as to what point the difference in values starts to have a noticeable effect. You may not notice any difference between a 15/1 and a 12/4 but since they are both stock values, I would do the 12/4.
    "The secret of happiness is freedom. The secret of freedom is courage." Thucydides

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    Quote Originally Posted by Face View Post
    Using a single value in the HF circuit is best. If a single cap isn't available, divide by 2.

    If money is tight, I'd wait and save up to do it right the first time.
    Thanks, I have heard good things about these Dayton's though and was going for better than stock as I have 100 credit at parts express. What is an excepted area of tolerance to stock values? will 1,2 or three make that much of a difference?

    Thank you

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    you could even use an 8.2/8.2 and still be well within the tolerance of the original caps as I think they were 10% or more.
    "The secret of happiness is freedom. The secret of freedom is courage." Thucydides

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    I will do a revised picture then and post it. thanks all

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    Attachment 46453

    This should keep everything in the 10% tolerance range of original. I will check the price on those other 22 ohm resistors mentioned.

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    will 2 ohms on those resistors make any real difference in sound?

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    Yes, the .5 ohm change in the 2Bs from not replacing the polyswitch with a resistor made a noticeable difference in the sound. You will be much better off with a 22 as opposed to a 20.

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    thank you, will do

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