Sherwood 1,346 Posted September 2, 2020 Report Share Posted September 2, 2020 The 220v - 110v step down transformers your tax dollars bought me have an audible 50Hz hum coming from the transformer and it’s driving me crazy. I’d like to source an alternative low-wattage (under 200) unit that will be dead silent for my listening room, but I’d like to know for sure it’s silent before I ship it all the way to Moldova and plug it in. Any d-_-b recommendations? Quote Link to post Share on other sites
dsavitsk 4,274 Posted September 2, 2020 Report Share Posted September 2, 2020 All transformers hum. The less they are taxed, the less audible it is. So oversized is your best bet. 1 Quote Link to post Share on other sites
luvdunhill 3,215 Posted September 2, 2020 Report Share Posted September 2, 2020 I would perhaps see what Torus Audio can do here. Regardless, find someone that uses the Plitron LO-NO transformers - I imagine there is a step-down version. 1 Quote Link to post Share on other sites
swt61 9,723 Posted September 3, 2020 Report Share Posted September 3, 2020 1 Quote Link to post Share on other sites
Sherwood 1,346 Posted September 3, 2020 Author Report Share Posted September 3, 2020 Helpful information, gentlemen, thanks. I’ve not found any lono transformers with the right windings yet, but I did find a 500W Plitron step down converter that handles 220v-110v here: https://m.aliexpress.com/item/32979526968.html?spm=a2g0n.productlist.0.0.58bb3e80yKcyh9 I’m always leery of Aliexpress, but does that look genuine to you? Quote Link to post Share on other sites
Pars 1,543 Posted September 3, 2020 Report Share Posted September 3, 2020 (edited) For $75? Very doubtful. The transformer alone would be more than that. And the one you linked is 100VA, not 500. Edited September 3, 2020 by Pars Quote Link to post Share on other sites
RudeWolf 241 Posted September 3, 2020 Report Share Posted September 3, 2020 If you know what you're doing, then any 1:2/2:1 trafo will do the trick. Just need to keep in mind the HF and current rating. Quote Link to post Share on other sites
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