Posted on Sunday, 10th May 2009 by Jimmy Auw

I have received so many emails asking about how to do the mods. Why I do this? Why I do that? Etc… Ok, I will spend my lazy evening to use one good example and write a simple tutorial here. Just enjoy.

I look around my room to find a good and easy example to support this tutorial. Then, my eyes stunned to my old Simbadda CST z120 Dual-O speaker set. Well, it a small speaker, you can’t call it audiophile or even near it. I open the case and find that this small “thing” could become our perfect object.

You can get at your near computer retailer for very cheap price, less than US$10, I think. Feel free to find any other object. I pick this one simply because this is the only thing that I can find at my room (and suitable for this experiment).

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Tags: Capacitor, mod, pc audio, Simbadda, speaker
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Posted on Tuesday, 31st March 2009 by Jimmy Auw

It was a nice session at DWA’s house located at Bintaro. We held a long session, from morning to night, from amplifier, preamp, DAC, to speaker. The event was started with a lunch ;)

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Tags: Aikido, Audio, Blind Test, clio, gainclone, solid state, speaker
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Posted on Sunday, 8th March 2009 by Jimmy Auw

Since tomorrow is holiday, so I take this Sunday as a “long holiday”. So I pay a visit to my good friend, Mr. Paul a.k.a PJ. I also bring my DIY Speaker and my DIY Aikido.

I don’t remember the way to PJ’s house (been there once), so I fire up my GPS on my Asus P835. I search location of Cipinang and trace down a little bit. I mark the location on my Google Earth and put coordinate on my GPS. I’m ready to go.

After 1 hour of traveling time, finally I arrive. My suggestion, don’t trust 100% with a gadget named GPS. It’s good, useful, but you need a brain with good logic to make it perfectly usable Just use it, and you will understand my point.

Here is PJ’s system. A nice floorstander speaker from ProAC (R3) and a bookshelf R1S also from ProAc. You also can see his 2A3 amplifier and 112A Pre-Amplifier there. A nice system as reference.

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Tags: DIY-Audio, speaker, tube
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Posted on Friday, 13th February 2009 by Jimmy Auw

Was a tough and tiring Friday. I want to listen some music (but I need to tweak some). Ok, fire up my iron and start to cook it right away.

If you don’t have any idea about my DIY speaker, feel free to visit here and here.

Ok, basically I just add 0.47uF K40Y-9 capacitor on my high pass filter. Current configuration is a little bit too bright on the tweeter, so I need to lower the F3 of my high pass filter. So here it is…

The high pass is 2rd order, combination of Siemens PIO and K40Y-9. Also Sfernice resistor used there. The inductor is Alpha Core Foil Inductor. Bought it few years ago, not the price is getting high and higher!

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Tags: crossover, DIY-Audio, speaker, tweak
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