Hello, I purchased this amp last week. I have improved its sound with Pansonic FR electrolytic caps in place of the fake Sanyo's and by replacing signal wires with neotech pure ofc hook up wire. This has definitely improved clarity and it is punching well above its weight. I have never heard these little amps before and I cant believe what I am getting out of a £27 amp. I want to tame the top end by bootstrap snubber and can't work out how to do this on my specific board. I apologise if this has been covered for my board but I have looked and looked and can't see it for the 100w x2 dual chip version. Is anyone able to help please? Also is it worth changing any of the other caps? Are the Wimas worth changing?
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If you mean what i think you mean, the snubber doesn't technically connect to the bootstrap pin.
http://i.imgur.com/v9cSRJg.png
http://www.ti.com/lit/ds/symlink/tpa3116d2-q1.pdf
Pinout of the chips is on page 3 of the datasheet.
Snubbers, as the schematic shows, go from the outputs to ground.
With a bit of careful pin counting, or rather much easier, with following the wide, obvious output traces (the ones that go to the inductors), and with the ground plane that shouldn't be too far from them, there shouldn't be a lot to figure out.
http://i.imgur.com/v9cSRJg.png
http://www.ti.com/lit/ds/symlink/tpa3116d2-q1.pdf
Pinout of the chips is on page 3 of the datasheet.
Snubbers, as the schematic shows, go from the outputs to ground.
With a bit of careful pin counting, or rather much easier, with following the wide, obvious output traces (the ones that go to the inductors), and with the ground plane that shouldn't be too far from them, there shouldn't be a lot to figure out.
from their website:
"The unidirectional UP-OCC has no electric resistance and practically no crystal boundaries. Accordingly, it is able to transmit electrical signals faster, and with less distortion than ordinary OFC and silver wires. All of these features make the pure OCC copper and silver the state-of-the art conductor materials for the audiophile cable industry."
Referring to this kind of stupid snake oil blurb you will find few experts taking you seriously.
I didn't even know all that, I had the cable already as I bought it as an off cut from ebay for a different project. Thanks for referring to it for me though, but it sounds like you don't believe Neotech then. Oh well! The exercise wasn't pointless though as I replaced at least one dry'ish joint in the process and I am happier that this has been done.
Sorry if i have embarassed myself but I wasn't taking myself too seriously and this project is meant to be me having fun and doing some improvents on a shoe string , but would anyone be able to give me help with my question at a level that a definate non expert would understand. I might just leave it as is but if it is simple i was prepared to have a bash. Cheers all.
Sorry if i have embarassed myself but I wasn't taking myself too seriously and this project is meant to be me having fun and doing some improvents on a shoe string , but would anyone be able to give me help with my question at a level that a definate non expert would understand. I might just leave it as is but if it is simple i was prepared to have a bash. Cheers all.
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