After first part here, I think it’s time to experiment more with this SPDIF Transformer. What could be worst than potting it into a custom enclosure? Nanana, I can’t even imagine…

Below is the final result: The potted transformer vs the original one. The size, ugh, a bit big – bigger to be honest.


Ok here is the process. As usual, the safest potting material should be the wax. You can find different type of wax, depends on your taste. Pay attention to the melting point. Based on the reference from the manufacturer, this Scientific Conversion SPDIF Transformer should not have too high temperature around – we are talking 90 degrees Celcius or above (except during SMD soldering). So the wax option should be the one with lower melting temperature (go and find yourself). Another consideration is this SPDIF Transformer will not produce any heat, so low melting temperature wax should be ok. Off course you can mix with some other wax to make it harder and increase the melting point. Some oil also could be used to increase the viscosity. So, you are the chef on this step! Trial and error is very important to get the best from the mix.

As I will need small amount of potting material, therefore I use small candle as heat source. The best is to use temperature controlled double boiler (which is safer, more accurate, and surely more convenient).


Pouring the first layer as base. Wait for several minutes until it completely dries.


Pouring the second layer. Another several minutes of waiting… 😉


Third pouring session. This time, half of the transformer already sunk inside the melted wax.


Final pouring session. To completely buried the transformer inside the melted wax.


It takes several minutes for the drying process. The color will turn into white after the wax is completely dried.


Final touch of the potted SPDIF Transformer to give a better appearance.


Next step is to find a good place to test and compare vs the original non-potted one. Hope this one could give interesting result!