Yes, I do it and it works great. Lots more detail in the music that I was never able to hear before. The 600 volt rating is well over the 120 volts of house AC.
20 responses Add your response
I have used Audience's Auricaps for across the line AC filtering for more than 6 years without incident. The Auricaps failure mode is open, posing no short-circuit/fire risk. I don't know about Mundorfs. I would at least investigate the failure mode of the Mundorf caps before using them in an across the AC line application.
Chrissain, you know that "AC rated" has nothing to do with the capacitor manufacturer's AC voltage rating right ? I just want to be sure we are on the same page. When we talk about "AC rating" for noise suppression use across AC hot and neutral, we are referring to the cap being X2 rated, i.e., the dielectric must be self healing or fail open so as not to pose a fire or electrocution hazard. Can you point to a source of information where it says Mundorf caps are X2 rated ? Regarding the Auricaps, I use 0.47uf ansd 1uf 600V, one across each duplex outlet/transformer secondary, and across the AC input of my DIY balanced power conditioner.
thanks for the concern gbart, I have corresponded with a mundorf rep once about output coupling caps in my tube amps and he told me that the mundorf supreme caps are self healing, I will contact him again to make sure that the can be used for ac before trying them, thanks for the heads up. I am very aware of the dangers of using the wrong cap in this application . thanks again, chris
According to UL and other safety standards, on an AC power line you can only use "X" safety rated caps from line to line and only "Y" rated caps line to ground. Any other caps can be a fire or shock hazard and insurance companys would not cover this mis-application. "X" and "Y" rated caps are specifically designed for severe transients that can be on the line and either not fail or fail in a "safe" mode.