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So, coming from the other thread -> https://www.avforums.co.za/index.php/topic,81024.60.html I decided to try making custom IEM tips. I had custom hearing protectors made a couple of years ago, so I used them to make a mold from silicone. Then I made copies of the originals with epoxy, drilled...

I got these drivers for a decent price and wanted to experiment a bit. I must say, I am thoroughly impressed - they sound a lot better than I had anticipated. I started loosely based on the Fat Thor and after simulation in hornresp, it became clear that you cannot just scale the design to 1...

After toying with the idea to build an amp based on the Rotel RB-03 a couple of years ago, I discovered that all of the transistors for this amp came to less than R50 per channel (checked this again about 6 months ago). This means that the whole amp would cost about the same as a chipamp. I...

For all interested in building these, I found software for a PIC18f458 to controll the PGA2311, it has very nice remote controll routines, but is written in some basic-type code which is not very efficient... On the matter of displays, vacuum flouescent versus liquid crystal: VFD = about R700...

I am busy constucting my full diy project. Speakers are Lynn Olsonns Ariel. DAC: 2*PCM1794, DIR1703 with PLL1705 in mono balanced mode. Using 2*PGA2311 as volume controll. Also input selection for external analog sources(thus the PGA). Amplifiers are pass labs Aleph-X running 2 channels 80W in...