My interes to electronics rises from the need of decent, powerful and relatively cheap apm. There just isn't one on the market. Only option is to build your own. When I finished my subwoofer-project I needed stereo amp to drive them. My poor old NAD just can't handle really loud bass from movies. So here goes: Once again Hifi-lehti was the saving angel. There had been an article about 50W MOSFET power apm and guidelines how to get 400W out of it using two channels in bridged mode. Fortunately all this info is now available as a book Tee Itse Hifilaitteita.
Once again here is the cost of this little piece of equipment:
transformer 800 mk ready-made circuit boards 350 mk filter capacitors 472 mk MOSFETs 776 mk other electrical parts 807 mk heat sinks 400 mk chassis 0 mk :) tools 200 mk misc 300 mk grand total 4105 mk
Aug 14 2001