Hey DIYA'ers🙂
I'm almost finished drawing a stereo preamplifier from scratch, only small adjustments is needed before I'll do some gerber files for a PCB order.
Question: does the orientation of the R-core transformer have significant impact?
Would it be better to rotate it 90°
Attached is a picture of the current progress and layout
Best regards
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More important than the orientation would be the possibility to shield the transformer and the rectifiers from the analog circuitry. If you could make some space for a shield between the power supply and the audio part (including the voltage regulators), it would be very worthwhile.
What are some of the specs about this build? This looks to be admirable work. I am not sure that I would come up to this standard even with the proper tools. There is so much work represented here. How much involvement did you have besides the design process? For me, finding a good place to help make a chassis or engrave a faceplate is difficult or out of my price range.
Would like to see photos of the rear panel as well as a front shot of the front panel.
Would like to see photos of the rear panel as well as a front shot of the front panel.
The project has been on my laptop for over a year, it's a massive take to get everything to lineup with the desire to use only one big PCB. Moving parts back and forth in KiCAD, trying to max out the layout, and various protobuilds in between. 4 month ago I started to source the parts I wanted.
The chassis I've also drawn myself, Modushop got the order of the chassis and did the drilling and text. I'm quite pleased.
The chassis I've also drawn myself, Modushop got the order of the chassis and did the drilling and text. I'm quite pleased.
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Fuse is in the AC inlet. It's an Elektor design, or highly inspired from... I've used THAT340 in the diff where Elektor used MAT02/03. It works amazingly well and has done so in every proto-build up till this final unit
I have no ballanced equipment, and doesn't plan to have, so I skipped this option. My DAC is Sudgen Audio DAC-4, and have the PCB's to build a Wolverine Poweramp designed by members here
Got to love the option of building for yourself. Your rules and ideas with no expectation from the market. For me, having 3 inputs works well, but I almost always use 2 outputs and a through-out too. Just what works for my system.
I will say that I have wanted to do a totally balanced system from TT cartridge to power amp output just to say that I did. Headphones as well.
I will say that I have wanted to do a totally balanced system from TT cartridge to power amp output just to say that I did. Headphones as well.