DIY Hybrid Amplifier
Aug 29th, 2009 by AnA
As I am very happy with the sounding of the hybrid amp from eBay. I decided to build one from stretch. After few days of surfing the web and finally decided to work on the amp designed by Sijosae. I was inspired by his work just by looking at the pictures of his amps. Anyway, here it goes…
For this amp, I had put in a lot of efforts and time. To date, this is the only amp which I had spend the most time and efforts. The time I spend most was the troubleshooting of the humming noise. I had redo the wiring and re-soldered few times just to get it right. Components had changed from the initial designed. I planned to use the toroidal transformer but due to the “magnetic interference”; which cause noise to the surrounding circuits, I was forced to drop the idea of using the toroidal. I guess I trusted the toroidal so much that I believe it will not cause interference even my circuit is very near to it. Thus, I never take extra precaution while planning the components layout. I was wrong; therefore, I had to replace the toroidal with a Switch Mode Power Supply (SMPS). I know, in the audio world, SMPS is not very popular. Well, I had no choice for now unless I want to redo everything again; such as getting another bigger chassis, change the components layout or solder on PCB … etc. For now, I choose to leave everything as it is and enjoys. Cheers!
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