Ground loop, cheater plugs, power cords, many ques


I thoughly done a search on curing a ground loop problem I had with my CATV and amps. Cheater plugs did work the best without any trade offs as with matching transformers and whatever, and I did numerous things on this problem. Couple questions? Has any one ever measured and compared the noise level with a cheater plug and CATV on and without the CATV and cheater plug. Just want to know if there is any differance. Please post.

Example, you just bought a $300 power cord and added a 50 cent cheater plug to it. Now that the ground wire is not being used, does this mean you are using only 2/3 of your power cord, or $200 worth? No pun intended, but why not remove the ground wire at the female end of the cord, cover and heatshrink, then reassmble?

To go even further, has anybody thought of putting a toggle on back of the amp or power conditioner to switch the ground wire out (float or lift). This means drilling a hole in the back of the unit, but wouldn't this give you a more purest path than using a cheater plug?

One last thing, you have your Porter outlets, Hydra cords, Wattgates, Hubbles and etc, why add a cheap$ cheater plug in the chain. Granted, it is only an inch and half long and made out of something that is really not the same quality level of conductance as stated above. My last question is, is there a oxygen free copper, shielded, cryoed, teflon coated, polyurethane jacketed high end cheater plug out there? If there is, let us know.

I have only been in audio for a year now, and I am finding out that the biggest impact per dollar on a descent sound system, other than the source, is what is feeding it, the ac. By eliminating as much ac noise as possible, my audio system does sound much better, but its those 50 cent cheater plugs bothers me the most. Yes, it is quick, easy and cheap to do, but are any of the alternatives I mentioned above would have a better impact on sound than the magical cheater plug? Please post any comments and thank you.
eldulcesol

Showing 4 responses by eldulcesol

Holzhauer, Subaruguru, tried that, done that. As Suburuguru stated, it can be a dangerous thing to do. I really have not done anything the last couple weeks cause of time restaints, but the audio ground loop isolator in the rca line from CATV box or tv has been working quite well. Eventually, all video will go to an AVR and use the front pre-out with the isolator in line to the int. amp. As now as it stands, the music input on the int amp is a lot queiter than it has been, but the video input does have some noise. This was tested at almost full volume, not noticable on the music input at normal listening level. Could be a good thing. I should get a spl meter and take some readings and compare cheater plugs to a rca ground loop isolator. When I do, probably after the first, I will post the results.
Everyone, thank you for the replies, keep em coming.

What I am trying to avoid is, as Sub suggested, a compromising adapter in the cords. Now I know that putting a ground switch in does exist, I can look into it. For breaking off the ground prong, I don't know about that yet, especially after spending a few hundred$ on cords. For any cord gurus out there, which is better, undo the ground wire at the prongs or at the IEC, then heatshrink the wire? Or does it make no differance? I really want nothing between the cords and the Porter outlets. Right now I have a filter in the rca's from the CATV box (digital) to the front ch. amp. The hum went down a lot, but not as much as a cheater plug. Maybe lifting the ground from that rca input or cable would work? Any other suggestions or comments?

FWIW, this is what happens when you you mix a great stereo system with home theater, problems, ground loops and frustrations.

Thanks again and I will post any changes, hopefully soon, when they happen.
Sub, thanks again for the response. I did read somewhere that it is better to disable the ground at the IEC, not at the prong. I just can't seem to find that article anywhere. My pc's are van den Hul Mainstream whose conn. are not heatshrinked. I should be able to undo the ground as you suggested and go from there. You did mention you put a ground switch on your pc's. How and what did you use to accomplish this? Other responses have been putting a switch on back of the amp, which would not really be a problem, since I have no intentions of selling the amp. The simple in-line quick disconnect switch does seem to be the most practicle way of doing this. Thanks again.
Thanks for the last couple answers on this. I am in the middle of moving and did find the best solution for eliminating ground loops caused by cable tv line. Before I packed everything up, I moved the television out of the room and left a small rack between the speakers. Obviously there was no CATV ground loop issues, but the music was so much better. As in my case, instead of correcting the problem, I eliminated it. When I get my new place, dedicated room is the way to go. Now at least I know what my system is capable of doing, which is very good. Now I have to wait a couple months before I can get back into the swing of things. BTW, I did use a ground loop isolator on the rca cables from the CATV box to the television with success.