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    Russian Teflon FT-3 0.22uF 600V Capacitors

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    Bugs

    Posts : 91
    Join date : 2009-04-17

    Russian Teflon FT-3 0.22uF 600V Capacitors

    Post by Bugs on Mon Dec 20, 2010 2:26 am

    The Russian Teflon FT-3 0.22uF 600V capacitors are supposed to sound very nice, but from what I read they are large. Has anyone tried them or will they fit under the VTA board?

    Bob Latino
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    Re: Russian Teflon FT-3 0.22uF 600V Capacitors

    Post by Bob Latino on Mon Dec 20, 2010 7:10 am

    Bugs wrote:The Russian Teflon FT-3 0.22uF 600V capacitors are supposed to sound very nice, but from what I read they are large. Has anyone tried them or will they fit under the VTA board?

    IMHO, at least in the case of the VTA driver board, the Russian FT-3 Teflon caps are just too large for a normal installation on a VTA driver board. One of the limiting factors, at least on a standard Dynaco ST-70 chassis, are the two front tube sockets. Even when you bend back the pins on the two front tube sockets, there isn't much clearance even for the Russian K40-Y PIO caps. I suppose you could mount the Teflon coupling caps somehow OFF the board or strap them in someplace with nylon wire wraps but it would not be a normal installation.

    The photo below shows a 600 volt Russian Teflon cap and a 630 volt Russian K40-Y PIO cap. As you can see, there is a large difference in size. The Teflon cap is 2 7/8" long and has a diameter of 1 1/8". The Russian PIO cap is only 1 5/8" long and has a diameter of just 3/4".

    Bob




    Last edited by Bob Latino on Wed Dec 22, 2010 12:31 pm; edited 1 time in total

    Bugs

    Posts : 91
    Join date : 2009-04-17

    Re: Russian Teflon FT-3 0.22uF 600V Capacitors

    Post by Bugs on Mon Dec 20, 2010 1:48 pm

    Boy, that cap is a brute. Thanks Bob.

    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Russian Teflon FT-3 0.22uF 600V Capacitors

    Post by mantha3 on Mon Dec 20, 2010 4:20 pm

    If you are looking at caps or thinking of re-doing the caps on your VTA board..

    Take a sec to read this Capacitor review...
    http://www.enjoythemusic.com/diy/0708/capacitor1.htm

    The writer of this tried both of the capacitors you are looking at and seems to like the smaller Russian PIOs over these larger ones. This is interesting reads as just about every cap is in this.

    I ended up running my VTA with 4 X .22uf 1200 Volt Jantzen Silver and 2 AudioCap Thetas .10uf 600Volt on top of the board on the signal path. The sound keeps getting better (I'm on about 40 hours of break in)

    Have fun with the caps. If you get these big suckers in and it works out with good sound please report back and have some photos with how you got these in!

    cheers

    Bugs

    Posts : 91
    Join date : 2009-04-17

    Re: Russian Teflon FT-3 0.22uF 600V Capacitors

    Post by Bugs on Thu Dec 23, 2010 3:17 am

    mantha3 wrote:If you are looking at caps or thinking of re-doing the caps on your VTA board..

    Take a sec to read this Capacitor review...
    http://www.enjoythemusic.com/diy/0708/capacitor1.htm

    The writer of this tried both of the capacitors you are looking at and seems to like the smaller Russian PIOs over these larger ones. This is interesting reads as just about every cap is in this.

    I ended up running my VTA with 4 X .22uf 1200 Volt Jantzen Silver and 2 AudioCap Thetas .10uf 600Volt on top of the board on the signal path. The sound keeps getting better (I'm on about 40 hours of break in)

    Have fun with the caps. If you get these big suckers in and it works out with good sound please report back and have some photos with how you got these in!

    cheers

    That is a good read. What made you dicide on using the Jantzen Silvers and AudioCap Thetas?

    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Russian Teflon FT-3 0.22uF 600V Capacitors

    Post by mantha3 on Thu Dec 23, 2010 11:38 am

    I have a buddy who is into tube amps. He does some Cap rolling. I got 2 of the new Jantzens for basically free. I got two more for about 40 more. Not cheap. I just read a lot of positive on the Jantzens. Also, some buddy influience invovled. Jantzens are spendy but you can certainly spend more on caps.

    I then went with 2X the Audiocap Thetas .10 uf on the top of the VTA in the 2 spots in the signal path. you install 4 .10uf caps on the VTA.. 2 of these caps are on the signal path so I thought I'd go with an Audiocap on these spots. The size is a bit bigger then the 2 orange caps that I got with the VTA with the upgrade but they fit and don't get hot.. And they look nice... Oh, and sound great!

    I wanted to try some more current cutting edge caps. It was not hard to go with the 2 Audiocaps in place of the orange caps... Other then the 15 bucks spent on them or so. I spent quite a bit on the amp so what is another 15 (don't ask my wife)

    The Jantzen over the Russion PIOs was not easy.. I think both are probably great. The Amp sounds amazing so I think the Jantzen's are solid. I am keeping the PIOs and will probably drop those in for a run later this winter.. Perhaps run the amp for a weekend to burn the PIOs in and then after a weekend burn in try a good listen on them.

    Fun new toy! Expensive hobby I gotta keep a handle on.


    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Russian Teflon FT-3 0.22uF 600V Capacitors

    Post by mantha3 on Thu Dec 23, 2010 11:42 am

    PS - Reading on Caps I'd like to hear the Russian PIOs and these big Russion Caps you mentioned in this thread.. for Bass as much as anything over the Jantzen's I have.

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