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Thread: Maton Super Twin refurb

  1. #11
    Overlord of Music dave.king1's Avatar
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    Scott has just taken delivery of the amp along with the schematics, this could possibly be a much easier project than anticipated

    Having said that, over the years I have met that bastrad Murphy and every single one of his known relatives

  2. #12
    Overlord of Music dave.king1's Avatar
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    The amp turned up tonight and let's just say it was an interesting sight.

    One of the filter caps is missing, a couple of resistors show significant heat damage and there are a number of wires swinging in the breeze.

    The thing that startled me most is that quite a bit of the wiring is 0.4mm solid core telephone wire, from 200pr cable for those who are familiar.

    Not a big deal to fix but a major surprise, my first amp build was an AC30 clone back in 1965, I worked for the then PMG and had access to anything I wanted but did use proper hookup wire that was fit for purpose

  3. #13
    Mentor Marcel's Avatar
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    An old saying springs to mind..... Better you than me Gunga Din....

  4. #14
    GAStronomist Simon Barden's Avatar
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    Quote Originally Posted by Marcel View Post
    An old saying springs to mind..... Better you than me Gunga Din....
    "You’re a better man than I am, Gunga Din" [/pedant]

  5. #15
    GAStronomist DrNomis_44's Avatar
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    Quote Originally Posted by dave.king1 View Post
    The amp turned up tonight and let's just say it was an interesting sight.

    One of the filter caps is missing, a couple of resistors show significant heat damage and there are a number of wires swinging in the breeze.

    The thing that startled me most is that quite a bit of the wiring is 0.4mm solid core telephone wire, from 200pr cable for those who are familiar.

    Not a big deal to fix but a major surprise, my first amp build was an AC30 clone back in 1965, I worked for the then PMG and had access to anything I wanted but did use proper hookup wire that was fit for purpose

    Can you post some pics of the amp chassis?, you might be able to order replacements for all the filter caps, and the other caps from this website:

    www.evatco.com.au



    They also stock all sorts of bits and pieces related to guitar amps as well as some nice cloth covered hookup wire, typically used in valve amps.
    Last edited by DrNomis_44; 11-02-2020 at 01:59 AM.

  6. #16
    Overlord of Music dave.king1's Avatar
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    I've already priced up all the bits from Evacto and it shouldn't be too painful

  7. #17
    Overlord of Music dave.king1's Avatar
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    A couple of pics, note the yellow/green and yellow/red wires there are other colours that aren't seen in these pics

    As delivered to the previous owner
    Click image for larger version. 

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    As delivered to Scott
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    The circuits that came with the amp.

    Click image for larger version. 

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    Last edited by dave.king1; 11-02-2020 at 05:51 AM.

  8. #18
    Mentor Marcel's Avatar
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    Yummm.... plenty of sweet spicy Mustard in that amp.... and far too much lethally exposed 240VAC mains.

  9. #19
    GAStronomist DrNomis_44's Avatar
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    Quote Originally Posted by dave.king1 View Post
    A couple of pics, note the yellow/green and yellow/red wires there are other colours that aren't seen in these pics

    As delivered to the previous owner
    Click image for larger version. 

Name:	EP8eeZN.jpg 
Views:	162 
Size:	120.8 KB 
ID:	33719

    As delivered to Scott
    Click image for larger version. 

Name:	yIURlJB.jpg 
Views:	168 
Size:	138.8 KB 
ID:	33720

    The circuits that came with the amp.

    Click image for larger version. 

Name:	Maton STB75.png 
Views:	154 
Size:	411.6 KB 
ID:	33721
    Click image for larger version. 

Name:	Maton STB75_PS.png 
Views:	156 
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ID:	33722

    The fact that you've got some schematics for the amp should make repairing/restoring it a lot easier.

  10. #20
    GAStronomist DrNomis_44's Avatar
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    Quote Originally Posted by Marcel View Post
    Yummm.... plenty of sweet spicy Mustard in that amp.... and far too much lethally exposed 240VAC mains.

    I've heard that hose Mustard caps are supposed to be great for tone, assuming that none have gone leaky, I'd probably try and keep them soldered on the board if at all possible, hopefully none of the resistors have drifted out of tolerance.

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