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Title: Reducing EMI/RFI / Power Wraps by Highwire Post by: gonzalito on January 13, 2011, 12:22:34 pm (http://www.power-wrap.co.uk/images/hwpw1a.jpg)
http://www.wavelength-distribution.com/powerwrap/ Iīve just ordered one to try it in my UPS power cord. Have you ever try these power wraps? Title: Re: Reducing EMI/RFI / Power Wraps by Highwire Post by: Flecko on January 13, 2011, 01:36:01 pm Never tryed one. I guess it increases the inductivity of the cable which makes it harder for rf signals to pass the cable. Even cheaper would be, to roll the cable to a coil. But carefull with strong amplifers, if turned on and off, the inductivity creates currents that goes backwards into the amlifer and might destroy something.
Title: Re: Reducing EMI/RFI / Power Wraps by Highwire Post by: Marcin_gps on January 13, 2011, 02:43:27 pm Hi gonzalito!
Thanks for bringing this up. I'm gonna try it as well as EVS ground enhancers. Marcin Title: Re: Reducing EMI/RFI / Power Wraps by Highwire Post by: pedal on January 13, 2011, 02:46:26 pm WARNING:
This one should be easy and effective, BUT don't use it on grounded powercords. Because the ground connection works as a leave/escape for high frequency distortion. The "optimum" should be to open the powercord, and let only the + and - pass through a coil. The ground wire (shield) should be untouched. In fact, a wise man told me once, if you wanna use silver in your cables, you should apply it not in the signal conductors but in the ground/shielding. Because the ground/loop noise is very high in frequency and needs a "perfect" conductor to get rid of. Title: Re: Reducing EMI/RFI / Power Wraps by Highwire Post by: AUDIODIDAKT on January 13, 2011, 03:26:13 pm My recipe DIY mains cable:
4x2 (8 wires)twisted solid stranded ofc copper wire (have to lookup the wire-gauge)with teflon, foil and copper-mesh shielding, teflon tape, nice cotton outside. No soldering Furutech connectors, they are expensive but VERY nice contact clamps and high contact strenght. Look very nice, works very well. This way its also very easy to test different cable designs, without soldering. Never touch contact points with your fingers, clean them with pure alcohol, btw. alcohol removes soldering flux too. my 2 (euro) c :) Title: Re: Reducing EMI/RFI / Power Wraps by Highwire Post by: gonzalito on January 13, 2011, 04:15:54 pm WARNING: This one should be easy and effective, BUT don't use it on grounded powercords. Because the ground connection works as a leave/escape for high frequency distortion. The "optimum" should be to open the powercord, and let only the + and - pass through a coil. The ground wire (shield) should be untouched. In fact, a wise man told me once, if you wanna use silver in your cables, you should apply it not in the signal conductors but in the ground/shielding. Because the ground/loop noise is very high in frequency and needs a "perfect" conductor to get rid of. pedal, Thanks a lot for the wise advice. Flecko, According to the Highwire page, the theory of operation isnīt about inductivity: "Power Wraps use a patented RF absorber in a special configuration developed for use on AC cords. The RF absorbers filter the RFI and kill the ringing in AC cords." Regards.- Title: Re: Reducing EMI/RFI / Power Wraps by Highwire Post by: gonzalito on January 19, 2011, 11:28:19 pm Marcin_gps,
Please let us know about your conclusions about the EVS ground enhancers . I wondering about getting a couple of them. Thanks in advance, Regards.- |