Originally Posted by sillysally
I have had that problem along with a radio tower three block from my home and my audio picking up the radio tower.
Different brands of speaker cable can help. However what really solved my problem was when I started to go to high end power cords and power supply.
Im using snake oil free good quality speaker cables (sonic wave) from impact acoustics for the fronts and center and blue jeans bulk speaker cable for the surrounds. All speakers have the same slight audible hiss even with different types and lengths of speaker cables.
Im using a PURE AV PF-60 power conditioner that everything is hooked up to.
When i had the halo A21 amp from parasound i never had speaker hiss or a ground hum. When i switched to the wyred4sound analog digital switching amp i started noticing alot of good things and bad. The first bad thing was a ground hum. I finally got rid of that when i route the comcast cable line into the power contioner so that it was properly grounded. That completely got rid of my hum that wasnt eveident with my parasound halo.
I just read on the wyred4 sound site that my amps XLRs are 60.4kΩ ohms.
And im using blue jeans Belden 1800F AES/EBU 110 ohm xlr cables.
Can this be the reason for the hiss? anyone know about ohms in xlr cables?