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The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


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quad
Luddite
anbitet66
j4570
Roy Mottram
SuperB
Bob Latino
burnedfingers
bktheking
13 posters

    St-70 upgrades

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    GP49


    Posts : 792
    Join date : 2009-04-30
    Location : East of the sun and west of the moon

    St-70 upgrades - Page 3 Empty Re: St-70 upgrades

    Post by GP49 Thu Jan 19, 2012 11:37 am

    burnedfingers wrote:bktheking
    It is common practice to use the correct connector for the application...I would not dream of using an XLR connector for anything other than a mic or line connector just to make sure that something doesn't get plugged in where it shouldn't.

    The best example of why NOT to use incorrect connectors: people who used to use regular household plugs/jacks on their SPEAKER WIRES for easy connect/disconnect.

    Sooner or later the speaker got plugged into a wall outlet, and POOF!
    avatar
    burnedfingers


    Posts : 29
    Join date : 2009-05-06

    St-70 upgrades - Page 3 Empty Re: St-70 upgrades

    Post by burnedfingers Thu Jan 19, 2012 8:06 pm

    http://www.abbatron.com/index.php?cPath=29_78_47


    This should get you some jacks to look at. They will be close to what I pictured. It appears that I purchased some left over stock from a local electronics shop that they discounted. The number I have on my box is 256 103 Jack and it doesn't seem to play.

    Side note here* I used insulated washers on both sides of the chassis. If you laid out your hole centers at .750 then a common banana jack can be inserted into both the neg and positive jacks at the same time. One step further would be to make up a harness that plugs into your meter.
    Luddite
    Luddite


    Posts : 233
    Join date : 2009-02-04
    Age : 74
    Location : Texas

    St-70 upgrades - Page 3 Empty Re: St-70 upgrades

    Post by Luddite Thu Jan 19, 2012 11:37 pm

    burnedfingers wrote:http://www.abbatron.com/index.php?cPath=29_78_47


    This should get you some jacks to look at. They will be close to what I pictured. It appears that I purchased some left over stock from a local electronics shop that they discounted. The number I have on my box is 256 103 Jack and it doesn't seem to play.

    Side note here* I used insulated washers on both sides of the chassis. If you laid out your hole centers at .750 then a common banana jack can be inserted into both the neg and positive jacks at the same time. One step further would be to make up a harness that plugs into your meter.

    BTW, the referenced page link is for "tip" jacks (very similar to what I suggested previously). Those will fit standard test probes. If you prefer to use "banana" jacks go to this page link:

    http://www.abbatron.com/index.php?cPath=29_78_44

    Best Regards,
    Charlie
    avatar
    burnedfingers


    Posts : 29
    Join date : 2009-05-06

    St-70 upgrades - Page 3 Empty Re: St-70 upgrades

    Post by burnedfingers Fri Jan 20, 2012 7:47 am

    St-70 upgrades - Page 3 C:\bias jacks\bias meter 002



    To each his own but this is my setup on one of my amps. A cheap $2 meter that is accurated and banana jacks set on a .750 c-to-c and a standard banana jack with meter leads will slide right in. The advantage to this setup is the meter probe tips will not accidentally come out. Just my .02
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    quad


    Posts : 15
    Join date : 2010-11-25

    St-70 upgrades - Page 3 Empty Re: St-70 upgrades

    Post by quad Sun Jan 22, 2012 7:18 am

    Explain?

    What they said...those meter type jacks are what I suggested to you to over on AK...

    http://audiokarma.org/forums/showpost.php?p=5312290&postcount=18

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    St-70 upgrades - Page 3 Empty Re: St-70 upgrades

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