Posted on Sunday, 9th October 2011 by Auw Jimmy

As my chassis has done few days ago, now it’s time to design the placement of the parts. I have mentioned before that the dimension was quite tight, so I wasn’t sure that I could fit all the parts on it. But without doing some prototyping, I couldn’t confirm that. So let’s start doing that.

My new chassis contains 3 chambers. One for the main transformer, one for the power supply section, and one for signal section. The size around 40×40 cm, more or less.

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Tags: chassis, design, layout, power supply, prototyping
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Posted on Thursday, 6th October 2011 by Auw Jimmy

I did a stupid mistake. I ordered new chassis, but during the construction, I changed some parts and forgot if the new parts actually ‘lot’ bigger than the old one. Two most significant in terms of the size are Hashimoto C-25-150CH and Tamura A-4004. They both occupy over half of the space (see the right chamber, on the size of copper plate). The copper plate itself will hold a giant custom Z11 power transformer.

I have to think how to solve this puzzle… re-order a new chassis would be my last, worst, but also simplest option…

See how things going soon… What you see below is not a ‘complete team’. I still have a pair of VCap and a Jensen 4pole electrolytic to join.

Tags: Aikido, chassis, preamp
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Posted on Friday, 15th July 2011 by Auw Jimmy

Not yet finished chassis. Quite huge for a preamp, around 42×42 cm in size. Some copper sheet shown on the picture for some section on the top plate.

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Tags: Aikido, chassis
Posted in Collectible Stuff, DIY Audio | Comments (16)

Posted on Monday, 8th December 2008 by Auw Jimmy

Finally, I put my Aikido Pre Amp on the chassis. Well, was a tough job since normally I didn’t do such thing (e.g. putting my DIY work on “little bit” neat chassis).

I separated inside the chassis into 3 chambers. The first one was for the main transformer, the second was for the power supply unit, and the last one was for the Pre Amp parts itself. I used 5 mm MDF wood covered with thick aluminum foil. The foil then grounded to minimize the interference.

Actually, I planned to put this Pre Amp to the Blind Test Session last week. But, the White Cathode Follower used in my Pre Amp seemed have some trouble when connected to higher impedance load (e.g. the input volume control on amplifier). I need to check it to find and confirm the problem later.

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Tags: Aikido, Audio, chassis, DIY-Audio, pre amp, tube
Posted in DIY Audio, Personal | Comments (8)