Ventilating Transformers - Page 2

barrymagrec · 29th July 2012, 03:45 PM

Do they specifically state mu metal? If so I am very suprised.

jacco vermeulen · 04:54 PM

From most of the RG integrated models to the $20k monaural power amps.
http://www.symphonic-line.de/0501_sy...rstaerker.html

Skin depth of Mu metal at 50-60Hz makes foil useless, thickest i have is 0.1mm
A can in Mu metal with 0.5-1.0mm wall thickness for a 300VA size does ~$150, cheaper options.

astrouk1 · 29th July 2012, 05:58 PM

That's very interesting, $150 is quite reasonable. I couldn't find a list of sizes on his website. Is this something you contact him directly for?

The aluminium is 5mm, I have Ultraperm 80 sheets of Mumetal. I'll put them on anyway as it's a nicer finish than the alu alone.

I also notice the on the photo you posted the only openings are at the base (regarding ventilation).

29th July 2012, 04:51 PM	#12
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, Rotterdam or Curaçao	From most of the RG integrated models to the $20k monaural power amps. http://www.symphonic-line.de/0501_sy...rstaerker.html Skin depth of Mu metal at 50-60Hz makes foil useless, thickest i have is 0.1mm A can in Mu metal with 0.5-1.0mm wall thickness for a 300VA size does ~$150, cheaper options. __________________ Not so much,.......if it says "ZM" in the corner. Last edited by jacco vermeulen; 29th July 2012 at 04:54 PM.

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29th July 2012, 03:45 PM	#11
barrymagrec diyAudio Member Join Date: Apr 2010	Do they specifically state mu metal? If so I am very suprised.

29th July 2012, 05:58 PM	#13
astrouk1 diyAudio Member Join Date: Aug 2010	That's very interesting, $150 is quite reasonable. I couldn't find a list of sizes on his website. Is this something you contact him directly for? The aluminium is 5mm, I have Ultraperm 80 sheets of Mumetal. I'll put them on anyway as it's a nicer finish than the alu alone. I also notice the on the photo you posted the only openings are at the base (regarding ventilation).