Posted on Sunday, 30th August 2009 by Auw Jimmy

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Still curious about the different between Jensen Copper Foil Paper Tube and Duelund CAST PIO, I held another session to benchmark both capacitors. You can read previous articles here and here.

This time I visit another friend. His systems as shown below. Briefly speaking, we can see a Fostex full range speaker with extra Visaton Super Tweeter. The source are Cayin CDT-17A (fully modified on its analog stage and additional reclock module) and a turntable (VPI Scout with Super Platter and Van den Hul Grasshopper IV GLA cartridge). The preamp is Tube #26 with RGN Rectifier. The power amplifier is RS241-12E1-6J5 with RGN Rectifier also.

We compare the Jensen Copper Foil Paper Tube and Duelund CAST PIO on the position between 12E1 and RS241.

system

The result?

For standard music consisting a lot of vocal, like Rebecca Pidgeon – Spanish Harlem or Ingram Washington, the different is there, but not that significant. Duelund wins for the harmonic details and spacious imaging – but in a small margin. While Jensen which doesn’t have that kind of details, but it could swing the vocal very well. I would say, the Duelund with around 4 times more expensive to Jensen, won’t make my jaws drop on the floor.

But situation changes completely after we switch to an even more complex music, with various instrument (most likely, consisting a lot of cymbal or brass and live music environment). We take some track from Sheffield Labs and some other more popular like Coal Train/Stimela by Hugh Masekela. With these kinds of music, we do really enjoy the advantage of Duelund CAST PIO. The music sounds live, a real live music and harmonically rich with huge and spacious imaging. It only take few second after the first tone played, before we can say, the Duelund is definitely better than the Jensen. Does it worth the 4x more expensive price? In this session, I would say YES! This session, Duelund CAST PIO does make my jaws drop on the floor.

FYI, mostly we use Vinyl as source. I seems that we got enough with CD ;)

Caveat: Jensen Copper Foil Paper Tube is a good capacitor, really a good one for its price… BUT… if you don’t want to get poisoned, don’t ever  hear the Duelund CAST PIO. After you hear the Duelund CAST PIO, it seems that you have no way back.

system-aikido

I also held an extra session with my Aikido (equipped with Duelund CAST PIO and RGN 1054 Rectifier) vs the Tube #26 Pre-Amp. I need to improve my Aikido mid-vocal though ;)

cayin

Also we held a Cayin CDT-17A short mod session. The best combination after several times testing is the 0.47uF Jensen Copper Foil Paper Tube  + 1uF Mundorf Supreme Silver/Gold/Oil. This combination provides excellent vocal with superb staging and details.

cayin-mod



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Posted in CD/DVD Review, DIY Audio | Comments (18)

18 Responses to “In Depth Session: Jensen Copper Foil Paper Tube vs Duelund CAST PIO”

  1. Kasan Santosa Says:
    August 31st, 2009 at 13:31

    Isi perut cd playernya bikin ngileer…



  2. Face Says:
    September 1st, 2009 at 07:28

    When is the comparison in a loudspeaker crossover? ;)



  3. Jimmy Auw Says:
    September 1st, 2009 at 08:47

    Nah… the Jensen only available up to 1uF, too small for XO application.
    And CAST would request me to rob a bank first ;)
    Thanks.



  4. Syeful Says:
    September 30th, 2009 at 15:27

    Boleh tunjuk cara sambungannya untuk ditambah dgn 0.47uF Jensen Copper Foil Paper Tube + 1uF Mundorf Supreme Silver/Gold/Oil.Pls email to msb7647@yahoo.com.tq



  5. Jimmy Auw Says:
    September 30th, 2009 at 22:31

    Hi,
    Tinggal diparalel aja Pak. Ga ada yang special.
    Thanks.



  6. Bowo Says:
    October 7th, 2009 at 15:56

    wahhh… saya salut dengan anda, punya perangkat audio yang kualitasnya No. Wahid

    omong-omong di M2 ada yang jual speaker Fostex ndak Pak ?

    kalo boleh tau tokonya yang mana

    Trims



  7. Jimmy Auw Says:
    October 7th, 2009 at 18:06

    Biasanya orang beli Fostex dari luar Pak. Ga tau kalo di Indo. Di M2 sih hampir pasti ga ada yang jual.
    Thanks.



  8. Rosanno Says:
    October 21st, 2009 at 12:00

    pak, kalau untuk signal coupling lebih enak mana Jensen paper tube atau audionote copper foil oil filled mylar?



  9. Jimmy Auw Says:
    October 21st, 2009 at 21:41

    Saya belum nyobain AN yang Mylar… ada rencana mau ambil juga nanti.
    Thanks.



  10. Andre Says:
    March 5th, 2010 at 18:00

    Pak Jimmy, kebetulan sy punya CDP yg sama. Boleh sy tanya apa saja yg di-modifikasi di CDT-17A tsb?
    Sy lihat sekilas resistor & tabungnya sdh diganti? Re-clock modulnya pakai apa? Apa OPA-604 nya diganti juga?
    Thanks.



  11. Jimmy Auw Says:
    March 6th, 2010 at 15:20

    Hi Pak,
    Itu kebetulan punya temen saya dan kondisinya memang sudah full upgrade semuanya (caps hampir semua diganti). Mungkin bisa cek ke Thomas (www.audiokitmania.com) dan tanya ke dia. Karena CDP ini dia yang kerjakan mod-nya.

    Thanks.



  12. Andre Says:
    April 2nd, 2010 at 20:24

    Thanks buat infonya pak Jimmy.
    Saya bisa minta tolong menanyakan nama & nomor telp temannya Pak Jimmy yg punya CD Cayin tsb? (Sy mau menanyakan bagaimana perubahannya setelah di-upgrade).
    Kalau boleh, via email saja Pak.
    Terima kasih sebelum dan sesudahnya.



  13. jonathanpp Says:
    July 30th, 2010 at 22:43

    Dear: Pak Jimmy

    Salam kenal pak, saya sungguh salut dgn blog pak jimmy ini benar benar trully a legendary audiophile.. sukses selalu pak..



  14. Jimmy Auw Says:
    August 2nd, 2010 at 20:57

    Salam sukses juga Pak Jonathan.



  15. Jessie Severino Says:
    September 10th, 2011 at 09:08

    Hi. I have in stock the ff:
    2 pcs Mundorf Silver/Oil 0.1uf
    2 pcs Mundorf Silver/Oil 0.22uf
    4 pcs Mundorf Supreme 0.22uf
    Can I use all of the above caps to tweak the Cayin CDT-17A?
    Would appreciate your feedback.
    Thanks in advance.



  16. Auw Jimmy Says:
    September 11th, 2011 at 00:30

    Hi Jessie,
    It depends on your CDT-17A circuit inside (which I have no idea)…
    Thanks.



  17. Jessie Says:
    December 18th, 2011 at 08:57

    Hi Jimmy,
    In your Cayin CDT-17A caps tweak, is the .47uf Jensen Copper Foil a bypass to the 1uf Mundorf S/G in Oil?



  18. Auw Jimmy Says:
    December 23rd, 2011 at 23:15

    Hi Jessie,
    Yes.
    Thanks.



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