Experimenting with caps

[Hank Murrow]

Here are Paul Birkeland's ideas about V-caps:  http://www.v-cap.com/bottlehead.php

Long break-in, but I love them in these pieces Paul built for me.  Cheers, Hank

[jrebman]

PB,

On that page Hank just gave the link for, it appears that there is a picture (?) of a 2a3 amp with the CuTF caps.  Any more you can say about thhe amp and it's sonics with these caps?  I have been considering the CuTF caps for the Stereomour coupling caps.

Thanks,

Jim

[Tickwomp]

PB,

On that page Hank just gave the link for, it appears that there is a picture (?) of a 2a3 amp with the CuTF caps.  Any more you can say about thhe amp and it's sonics with these caps?  I have been considering the CuTF caps for the Stereomour coupling caps.

Thanks,

Jim

I used the V-Cap CuTF for coupling Caps in my Paramounts.  400 hours is 16.66 days and feels like forever.  Tonight at 2100 hrs will be day 15 for me.  The first week I ran them in my garage system (wired in series with a pair 10 ohm 10 watt resisters).  After I installed them in the Paramounts, I've been running them 24x7 (with a small fan to help control heat). 
Last night was the first time I sat down and listened critically.  Wow, significant improvement (which was still better than I've ever had).    Everything better.

[corndog71]

Which caps are you speaking of for the V-caps? Power supply or signal?

Have never used them myself but have only heard good things about them.

Have pretty much gone to all motor runs with a few Obbligato PSU caps for power supplies (have a Solen in the PSU of my SEX). And in my FPII my favorite signal caps are Jupiter wax caps.

Had been debating picking up some V-caps to try out but have been holding off because of the price. What don't you like about them?

I was referring to the cheaper OIMP v-caps.  I was using a pair of 3.3uF as output caps.  They're ok but kind of boring.  I'm surprised by their performance but maybe they would work better in a different application.

I have a pair of the premium teflon v-caps which I use in my sex amp.  Those I would highly recommend as they just get out of the way and let all the music and dynamics through.  They really took my sex amp to another level of resolution.

[Hank Murrow]

Hank here;
The 2A3 Amp you remark on was built for me by Paul Birkeland using a ton of iron(3,5 watts per channel weighing 47 pounds!); including tasty MagneQuest TFA 2004 Jr. Cobalt/M6 outputs. A detailed description can be found here:   

http://www.bottlehead.com/smf/index.php/topic,622.0.html

Though the break-in was very long, the CuTF caps really sing in this topology. Paul used the V-caps in both linestage and phonostage also, described here:

 http://www.bottlehead.com/smf/index.php/topic,64.0.html

http://www.bottlehead.com/smf/index.php/topic,621.0.html

Cheers, Hank

[Tickwomp]

Wow Hank your system is almost a thread killer!  Very nice!!

FWIW, there's a nice online calculator on the V-Cap site.  I just pulled the trigger on some CuTF .33uF caps for my Foreplay.  If these make as much difference as I hoping for I'll be really happy!