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Thread: choosing capacitors...

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    choosing capacitors...

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    recently another user sent me a link to an mxl 603 mod...

    http://www.prodigy-pro.com/diy/index.php?topic=5156.0

    here they instruct the replacement of the .22uf caps w/ panasonic metal film caps from digikey. problem is, they don't specify whether those are metallized polyester, metallized polypropylene, or stacked metallized plastic film.

    i did a search, but all i found was some bickering about the validity of the mod to newer 603s and the discoverer of the mod, which doesn't particularly help me.

    does anyone know what specific part the original modder was using, or even better, what the part# is? i've never modded anything, and have a couple spare 603s lying around that i thought i'd try my hand at.

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    oops, could a mod (bad, but unavoidable pun) move this to the diy forum? i forgot we had one...

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    Quote Originally Posted by drossfile View Post
    oops, could a mod (bad, but unavoidable pun) move this to the diy forum? i forgot we had one...
    wow, that was quick! thanks.

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    Any of those caps would be fine as long as space allows .....
    War is just a word used to hide the nakedness of their killing ......

    Kwai Chang Caine
    (Kung Fu)

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    Quote Originally Posted by Minion View Post
    Any of those caps would be fine as long as space allows .....
    i think that's part of the issue...

    you wouldn't happen to know what each cap looks like do you? at the link i provided, there are further links to before/after pics that show the new caps. maybe that helps to narrow it down?

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    The .22uF cap is the red one in the pics , but like I said any Poly cap will work fine and be better than what was in there which was probably a ceramic .... the caps are pretty small so no matter which one you get it will probably fit unless you get like a 200v or 300v part which would be a bit big and overkill anyways ....

    I suggest you get one that has long leads as opposed to the Box caps which have short leads , incase the caps spaceing isn"t correct you have long leads that you can bend to accomidate the spaceing ....


    Cheers
    War is just a word used to hide the nakedness of their killing ......

    Kwai Chang Caine
    (Kung Fu)

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    Quote Originally Posted by Minion View Post
    The .22uF cap is the red one in the pics , but like I said any Poly cap will work fine and be better than what was in there which was probably a ceramic .... the caps are pretty small so no matter which one you get it will probably fit unless you get like a 200v or 300v part which would be a bit big and overkill anyways ....

    I suggest you get one that has long leads as opposed to the Box caps which have short leads , incase the caps spaceing isn"t correct you have long leads that you can bend to accomidate the spaceing ....


    Cheers
    cool, thanks man. as for the voltage rating--should i just match what's already in there? i'm starting to think that maybe i shouldn't be trying this until i learn a bit more about modding in general. i figured it would be a simple parts orering/desolder/solder job but maybe there's a lot more to it than that.

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    Any Voltage rateing of 63v or higher will be fine , 50v caps would be to close to the 48v Phantom voltage and could Fail .....

    Cheers
    War is just a word used to hide the nakedness of their killing ......

    Kwai Chang Caine
    (Kung Fu)

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    Quote Originally Posted by Minion View Post
    Any Voltage rateing of 63v or higher will be fine , 50v caps would be to close to the 48v Phantom voltage and could Fail .....

    Cheers
    gotcha. thanks, i appreciate the help.

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    Quote Originally Posted by Minion View Post
    The .22uF cap is the red one in the pics , but like I said any Poly cap will work fine and be better than what was in there which was probably a ceramic ....
    Most of the Chinese SDCs I've seen use a couple of ceramic parts with single-digit pF values and a dozen or so large value dipped caps, which are probably tantalum. I mean, I suppose there are dipped multi-layer ceramic caps, but AFAIK, dipped tantalum are orders of magnitude more common. For that matter, (some?) silver mica caps are dipped, but I can pretty much guarantee they aren't those.
    Quote Originally Posted by Obi-Wan
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