As already introduced in the previous article, I explain how it ended experience with the T-AMP. The site
www.41hz.com seemed very attractive now, given the variety of kits available and the care with which the site is achieved.
The temptation was to immediately order a stop only embarrassment in choosing which kit to try, they all looked very good.
My choice fell on two kits: the AMP32, based on the TA2021 chip (2 x 15W RMS) and AMP4 (based on a complete chipset, can provide a power of 2 x 30W RMS). The AMP32
I was particularly attracted by the components, all in SMD, but very thorough. It 'was an opportunity to be expert in soldering SMD and appreciate at the same time a more substantial power from the famous T-class (let's face it, with 8 + 8W did not feel much ..!).
Assembly dell'AMP32 was not just immediate. Once learned soldering SMD components on two terminals then all look alike, and you can refine the technique using less tin, resulting in a good and satisfactory welding.
More difficult is the welding of the TA2021 chip. The SMD package is very thorough, the pins are very thin and very close together. After a disappointing attempt to weld "wave", I adapted to weld the pins one by one, removing any residue at the end of the pond between pin and pin.
The first time I have not been satisfactorily resolved: the amplifier will sound crisp and off after a few seconds of crackling and rustling.
First I rehearsed all welding components, allowing for final consideration on each chip. Having then established that the situation did not change, I decided to redo the welds of the chip, a task far more difficult to view the population of the board.
After two "past" of a welder here is that everything was functioning properly, and AMP32 still plays on my desk from time to time. Oh yes, because the poor amp still needs a "home". But that's another story. The AMP4
waits for his master has time to get to assemble ..
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