12/27/2023 0 Comments Coax ground isolator near meas Richard Berg says, this is usually caused by your cable TV connection Except I don't see where he mentions having cable TV hooked into his system at all.quote:buy one of these: DAYTON VIT-1 VIDEO ISOLATION TRANSFORMER and put it in series with the cable TV feed. quote:If that isn't possible or practical. Well, that would be 'best' in the sense of 'I don't really care about all the bandwidth issues and jitter introduced by consumer optical interfaces'. Do you understand the concept of 'ground'? Your audio gear definitely should be connected to a good earth anyway.quote:The best answer is to go to an optical SPDIF conneciton. No, an isolation box would be better, but lifting off the shield will work as well. Thereby leaving the SPDIF connection without a "return" path, except incidentally through AC safety ground. Let me introduce you to the concept of 'google'.quote:quote:A quick-fix would be to disconnect the shielding from the connector that plugs into your computer. Such isolation boxes are frequently used in professional setups. Digital coax is just a 75-ohm connection. Do you have one in mind that works on SPDIF? Yes of course. Last time I checked, my motherboard was connected to a powersupply.quote:quote:The best solution would be to use an isolation box between your computer and your preamp. Any noise "sprayed onto the ground plane" is far in excess of 60 Hz. Quote:Originally posted by DriverGuru:quote:Originally posted by charleski:Your motherboard is spraying noise into its groundplane, and your pre-amp isn't properly star-earthed, so that noise is getting into the analog circuitry. If so, then to fix it, go to, buy one of these: DAYTON VIT-1 VIDEO ISOLATION TRANSFORMER and put it in series with the cable TV feed. If the hum goes away, that's the source of the problem. You can test this by disconnecting the cable TV connection to your HT gear. as Richard Berg says, this is usually caused by your cable TV connection being at a different ground potential than AC safety ground (to which the computer chassis is usually connected, but your audio gear uually isn't). The best answer is to go to an optical SPDIF conneciton. Do you have one in mind that works on SPDIF?quote:A quick-fix would be to disconnect the shielding from the connector that plugs into your computer. quote:The best solution would be to use an isolation box between your computer and your preamp. Connecting that wire is what CAUSED the problem.quote:Originally posted by charleski:Your motherboard is spraying noise into its groundplane, and your pre-amp isn't properly star-earthed, so that noise is getting into the analog circuitry. He already has such a wire, the shield side of the digital audio coax connection. Quote:Originally posted by Coleman:Does your preamp have a ground connector on it? Running a wire between the ground connector to your case somewhere should clear out the hum.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |