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    GEC Ediswan cv345/12e1 power tube.... KT-88 eqivalent?

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    scottlowe

    Posts : 38
    Join date : 2014-04-05

    GEC Ediswan cv345/12e1 power tube.... KT-88 eqivalent?

    Post by scottlowe on Wed Jun 25, 2014 1:39 pm

    Hi another question? Is this a drop in replacement for the kt-88? can I just put it in my st-120? thank you,Scott Neutral 

    stewdan

    Posts : 161
    Join date : 2010-03-07
    Age : 78
    Location : Houston Texas

    Re: GEC Ediswan cv345/12e1 power tube.... KT-88 eqivalent?

    Post by stewdan on Wed Jun 25, 2014 3:52 pm

    Hi Scott --- take look at the following links:

    http://www.duncanamps.com/tdsl/show.php?des=CV345 and
    http://www.r-type.org/exhib/aai0167.htm


    In the picture of the CV345 on the aai0167.htm page, there is a metal connector on the top of the tube which requires some sort of electrical signal.

    The 6550/kt88/kt100/kt120 tubes do not have the topside connection.

    So, the CV345 is not a drop in replacement for a VTA ST120 Amplifier.  Also the other tube you mentioned, the 12e1 which is something like the CV345 is also not a kt88 replacement tube.

    Hope this helps,
    Stew

    stewdan

    Posts : 161
    Join date : 2010-03-07
    Age : 78
    Location : Houston Texas

    Re: GEC Ediswan cv345/12e1 power tube.... KT-88 eqivalent?

    Post by stewdan on Wed Jun 25, 2014 3:55 pm

    Scott -- also, on the Duncanamps page for the CV345, there is no mention of the KT88, only the 12e1.

    Stew

    sKiZo

    Posts : 1312
    Join date : 2013-04-01
    Location : Michigan USA

    Re: GEC Ediswan cv345/12e1 power tube.... KT-88 eqivalent?

    Post by sKiZo on Wed Jun 25, 2014 4:59 pm

    Just for yuks ...

    The KT88 anode is pin #3. That pin is "no connection" on the CV345.

    So ...

    Run a tail and anode cap from pin #3 on the KT120 socket to make the connection on the CV345?

    Certainly be a conversation piece if you could get it to work ...



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    Re: GEC Ediswan cv345/12e1 power tube.... KT-88 eqivalent?

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