Posted on Sunday, 28th March 2010 by Auw Jimmy

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Few months ago, my Aikido transformer was burned due to my stupidity plugging in 100R bleeder resistor, instead of 100K one. Well, I have ordered another replacement few months ago, but just now I have time (and motivation) to install it. This one is an ultimate transformer I believe, with Z11 iron and Germany/Australia wire. I have big concern on power supply, since it’s the food for your audio system. So I expect good and healthy food, I mean, power supply for my audio equipment.

Due to different leads arrangement with my old transformer, I must do some extra job adding some extra wiring. Here is the result.

1-transformer

Not a bad 45 minutes of work, huh?

Below is my Aikido chassis. The top left is the empty space for the transformer. A little bit complicated in the arrangement.

2-wo-transformer

After connecting the primary section of my new transformer, I decided to give a try on the secondary. I use my Sanwa PC510 True RMS Multimeter to check the secondary windings. It seemed OK. If I could recall my memories correctly, it was measured around 660VAC, 6.6VAC, and 5.2VAC.

3-testing

Now it’s time to solder all the connections. Then, I plugged back all the tubes.

4-all-done

The last touch was to install the Duelund CAST Silver (CAST Ag). They sat perfectly on the right place, on the side of Jensen Copper Foil Aluminum Tube which used as the final HV bypass.

5-duelund

But I was too tired even to power up the system. So we will evaluate the sound performance, later but soon, I believe ;)




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Posted in DIY Audio | Comments (12)

12 Responses to “My Aikido with Duelund CAST Silver Installed”

  1. Arie Says:
    March 29th, 2010 at 16:22

    Yaaaaaah…
    kirain bakalan ada langsung Listening Impressionnya… :D
    Oke deh, ditunggu ulasannya…
    Btw, ‘rumah’ buat si AikiAuw belum selesai kah?

    Salam,
    Arie



  2. Jimmy Auw Says:
    March 30th, 2010 at 18:17

    Rumahnya belum jadi Om Arie…

    Thanks.



  3. SS Wong Says:
    March 31st, 2010 at 15:57

    I believe u had heard the sound, so what’s your 1st impression? far better than cu pio? or??



  4. opa T Says:
    April 1st, 2010 at 23:29

    congrats pak & hayuu atuh itu rumah nya :)



  5. Bryant Says:
    April 2nd, 2010 at 11:07

    Hello,
    I’ve bought CAST Copper, could you let me know which lead is lead in (input) and which lead is lead out (output)?
    How many hours does it need to burn-in ?
    Look like I soldered it opposite yours (compare with its sticker). It sounds dull,no dimension, small soundstage.
    Thanks,



  6. Jimmy Auw Says:
    April 2nd, 2010 at 12:41

    Hi,
    Duelund or any other Stacked Foil caps I believe does not have orientation.

    After several hours you can hear the different. After few hundred hours it’s another story.

    Thanks.



  7. Jimmy’s Junkyard » Blog Archive » Duelund CAST Ag (CAST Silver) Early Hours Impression Says:
    April 3rd, 2010 at 23:21

    [...] Now it’s time to try the Duelund CAST Ag (CAST Silver) on my Aikido Preamp. You might be interested to read the installation process. [...]



  8. borgs Says:
    April 24th, 2010 at 23:06

    wow!! great job on the akido amp. this is seriously high-end. you have all the premium parts. must be wonderful sounding….
    i notice your power supply section consist of Jensen 4-pole, ASC, Vcap(bypass). could you explain why is there a need to have a resistor on the ASC cap. thanks



  9. Jimmy Auw Says:
    April 25th, 2010 at 12:54

    Hi,
    The resistors serve as Bleeder Resistor.
    Thanks.



  10. pamuji Says:
    May 6th, 2010 at 10:08

    Dear Pak Jimmy,
    Rect tube pakai apa, kelihatannya pakai 6X5 atau 5Y4?
    Thanks



  11. Jimmy Auw Says:
    May 6th, 2010 at 11:30

    Pak Pam,
    Rectifier pake Russia 5U4 saja.
    Thanks.



  12. Jimmy’s Junkyard » Blog Archive » Hashimoto C-25-150CH Choke Input and Tamura A-4004 Permalloy Choke Says:
    September 20th, 2011 at 15:10

    [...] either A-4006 (Amorphous) or A-4004 (Permalloy). But due to some other consideration (as my Aikido Preamp already has Duelund CAST Ag Silver Capacitor inside), then I think Permalloy will give a nice [...]



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