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Crack Cap rolling updateCascade bypass of JFX 100uf Premium film audio coupling capacitors
Bypassed with
Russian K75-10 Hybrid Paper and Polyethylene Terephthalate in Oil (Mylar)
Bypassed with
Russian Teflon K72P6 Teflon
Beyer T1 and TS 5998 used for listening
I find myself enjoying the pairing of these capacitors they sound much better than the odd look they have shoehorned into the enclosure and held together with cable ties might suggest.
It has taken over 200hrs for the combination to settle down and a more coherent and refined sound to emerge.
With the Crack I find the K75-10 really very musical, fluid and engaging, PRaT is good its has a slightly dark flavour at lower volumes. John L mentions “jest and pop†in the presentation in his capacitor review (
https://www.head-fi.org/t/284863/orgy-of-capacitors-the-cap-thread) this comes through strongly and is very much akin to listening to vinyl on my Rega Planner 3, Just instant tow tapping head nodding enjoyment. Its a very engaging sound.
Here’s the thing with the K75-10 I find it very musical the downside is the roll off. The top end has lost a lot of its crispness, gone is the metallic ting on triangles and cymbals which have now turned to softer schings instead of the crisp detailed ting, the bass is also a little loose and bloomy.
So I tried adding a K72P6 Teflon bypass to the K75-10 things started to improve while still keeping much of the K75-10 character. With over 200hrs burn in the K72P6 Teflon influence on the top end has settled down and it makes for a much more coherent and refined sound, which the K75-10 lacked on its own.
Details and resolution are vastly improved while still keeping some of the zest and pop which I found engaging.
The aspect I have found most pleasing with this combination is the vocal presentation, both male and female voices come across beautifully with nice tone and texture and enough detail in the resolution to pick up the little nuances in word formation and expression. I am wondering if this might be attributed to the Teflon capacitor or some kind of averaging out taking place.
The film and Teflon bypass capacitor combinations are throwing up some surprises and these Russian ex-military capacitors I have been experimenting with cost about the same as a cup of coffee each.
This is a combination that I could happily listen to for a long time.
(https://www.head-fi.org/content/type/61/id/1046447/width/350/height/700/flags/LL) (https://www.head-fi.org/content/type/61/id/1046445/width/350/height/700/flags/LL)
I will be marking this combo up just in case it goes back in.