mikaelmark
100+ Head-Fier
- Joined
- Sep 24, 2011
- Posts
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- 61
The LC "standard" toroid, the Telema 70063K, has a 2 x 15V output rated for 832mA each.
So, your R-core is a little short at 2 x 500ma. I would look for at least a 30VA.
Do you need both 9V and 15V outputs? There are many ebay listings for 30VA R-core with only 15V outputs.
http://www.ebay.com/itm/115V-230V-30W-R-Core-Transformer-15V-15V-for-Headphon-amp-preamp-/221703835182/
In regards to the mains filter, an R-core will give you some filtering. Better than a toroid. Adding the socket filter won't hurt but it's not a miracle if you have very noisy mains. I use a separate mains filter. Something like this http://www.tripplite.com/surge-protector-isobar-4-outlets-200v-240v-2m-cord-680-joule~EURO4/
I have now get a toroid with 2 x 15V at 200VA, with a slow 2A fuse and then I installed an EMI-filter (like that one in the picture). I unmount the metal housing from it, and solder it directly at the wires and mounted everything in an power supply case for PC. I´m also gonna mount the LC in another power supply case, with a power cable between them (made for 115V/230V): http://www.8audio-mall.com/7-layers-triple-screens-cable-for-diy-audio-power-cable/
/ Mikael Markstrom