Copper Sleeve over IEC


There has been several threads on AA about putting a 1 1/2" copper union (coupler) over the IEC on the CD Player, Preamp, Amp.

Well I tried it...

Anyone else give it a try?
128x128ozzy

Showing 20 responses by nasaman

Ok, you guys got me all hyped up now and I'm gonna give it a shot sometimes this weekend.

- Just for the record, can anyone email me some pictures?

-Do I still get full benefit if my power cord is not shielded.

THanks in advance and the part number is a big help too.
Rx8man,
Glad to hear the tweak is working out for you.
One question, what brand are your power cables and are they shielded?
Chrissan,
You may mistaken EMI and RFI. While RFI MUST need a ground wire to disepate its energy... like the lightning rod, the MAGNETIC energy /force can be controled by creating barriers, distant, or demagnectized equipments. Hooking up a ground wire to demagnitize the magnet energy is not an effective tool.

RGD,
I totally agree with you. How the copper coupler can take in effect right at the female plug while my whole entire power cord if it isn't shielded and fully exposed?
But I think this tweak makes sense and has a potential to improve sound. Everytime we can control either very much, alot , or just a little of EMI and/or RFI, it is a benefit to perfection the audio sound.
Disregard the fact that many of our power cables are not fully shielded, if this copper coupler tweak actually works in theory, then if I may, I can exagerate it as the power conditioner working concept. Which means it can analize then stablize the un-filtered and un-stabled electricity (current, voltage, and hz) from the main source ( elect. Company). See? All the power lines are not shielded but we, as audiophiles, still working hard to find ways to go around it.
In this hobby, I PERSONALLY admire to ones that continuosly
finding/hunting for ways to maximize their mid-end systems than others who spend $20K to $50K for a pair of speakers and knowing nothing about technicality.
So,like Ozzy's been screaming all week, give it a try!!!
The Reference models from www.Marantz.com are eliminating /reducing EMI right where it was being generated, the Toroid transformers. The INSIDE images from the website show beautiful craftsmanship of the Reference models and how well the Toroid transformers being covered. Let’s compare them with ones that are “naked” from cheaper MArantz models....

The Halo models from www.ParaSound.com have diff route to reduce EMI. They use thick and solid wall plates to corner up the transformer then move some of the electrical components and wiring that they think would be effect the most to the other side of the plates and away from the transformers.
Other companies may have diff ways to control EMI, but so far I like the way Marantz do theirs most.

Chrissan,
That makes sense, show no harm and doesn't cost much to do. Sounds promising.
Chrissan,
I just talked to 1 electrical engineering at my work and, just like you brought it up earlier, he too rec'd to run a ground wire from a coupler to the classis. Verified.
He thinks to design a "metal hat" like Marantz do to their REference lines to shield up the entire transformer is not a bad idea...
Brought my EIC connector in local Ace hardware for sizing but their biggest size avail. for copper coupler was half inch or 3/8". Does any one have the part number from Lowes of Home Depot?
Thansk,I have the standard Wattgate plugs so will see. An engineering guy said that it isn't have to be copper. It can be brass or else, what matter is its thickness. He also added, other material that can actually "neutralize" magnet is called Mu-metal, but then it'll have side effects as well, and he went on... to probably few pages if I type all down. I'll stick with copper.
Alrighty, finally, I bought 2 of them, 1.5" for my IEC (Note: 1.25" did not fit the Wattage plugs, it just stops right at the black lip of the plug). Paid $4.99/each from Mom&Pop strore since Lowes did not have any copper or brass bigger than 1".
If all materials are getting the same affect then I think next time I will stopby a muffler shop to see I can snatch 1 for free.
I stayed up late till 4:30am last night to test out power cables, and it was so much fun. It was so amazing to see just switching 1 power cable around can change the sound of my music.
Let's see where this tweak will take me tonight... crossing my fingers and hoping for best.
OMG, this tweak REALLY works for my system. The power cable for my DVD Denon-5910 is 1M long and everytime I slided back far away from the CD end (IEC female plug) it degraded sound quality in both instruments (guitar, violin) and Diana Krall "The Girl In The Other Room." Engaged it back on and the sound was just beautifully sharper, instantly. Unlike any IC and PC that I have tried on my system, this OZZY tweak (lol, in this thread, you brought it up, you earn it!) remain the same characteristic but much clearer and sharper. It's a step closer to high-end sound like the Esoteric DV-60 that I auditioned before in my system. I would say more like Hi-Fi sound; very define and crystal clear.
My system was very warm and musical before but now it's more like Hi-Fi sound, not a bad way, not a good way, but I just stated to show the compare and contrast for this Ozzy Tweak.
I was gonna wait till my wife come home from work so she can help me slide it back and forth for my blind test, but after quickly going thru it, I confirm that Ozzy Tweak is really work. I used couple "clear brain" techniques to asurely this is not my imagination, and it is NOT. It really works.
I'm so excited now so my rating for differences might be unfair and bias. If I have to throw in a number, it'll probably like 15-25% sound improved. ( I just edited and crank it up from 10-20%)
I'm taking the extra piece to my friend who has higher end system, and I will keep on update more later.
This tweak works great on my friend's system. Great improved on audio. We tested on DVD mode using his Bob Scacces disk, but there's 1 technical problem. After the 2nd attemped, audio still playing but the video went blank (showing no input) everytime we slided the copper over his IEC (Nordost) even on diff DVD disks.
His DVD player is Ayre D1-xe comes with original equipted seperate power supply. http://www.ayre.com/retired_detail.cfm?productid=4&field=specs
The video works fine on my Denon DVD-5910.
I predict that this has to do something with magnetic field...
"He refused to even try the copper fitting, because he believed it would not do anything."

Lol, and that's why he has the "well engineered" factory power cord. Just a while back, people did not believe the earth was rounded like an orange, and they thought that....

Fact, just about 2 to 3 years ago, I thought that high end components were over rated and designed for people with too much money in their hands. Any thing costed more than my Harman Kardon AVR and $79 Sony DVD were just ... too much. Especially telling me a $200 interconnect could improved my system? C'mon get a life. That was such an insult my intelligent.... Thank you Lord, I have an open mind and the passion for this hobby.
"If the copper coupler had an "audiophile" name on it with a $500.00 price, he'd put-em on his cord(s) w/o question."

If StereoPhile magazine agrees to test and write a full review for this tweak under my new company's name: "NasaMan", I'd probably get rich and quite my day job.
Humm, not a bad idea!!! Wondering how much StereoPhile's prices?

Rhyno,
Great finding. ..Did you jsut create that site? j/k
Wow, they are pretty hefty /thick. But, unless that extra thickness already compensate it, otherwise I think thye need to extend the length to fully cover the IEC. Anyways, with those pieces from the website above, our local untrusted friends may now have no doubt that they actually work. Can you imagine if Furutech or Cardas or even Nordost come out with alikes... this thread will def be extending to couple pages more. Lol.
Also, after today experiment,I want to confirm that this copper tweak WILL NOT work on Ayre D1xe DVD player. The video will be blacked-out. Confirmed.
Note: Ayre D1-xe equipt with seperate power supply.
Wow, with this copper sleeve, the video is also greatly improved, too. Not just more colorful but clearly details as well... Speechless!
"Out Sourced" movie is a great one for testing sound and video. Grab one!!!
Ouch,
Sorry it did not work out for you. No, it's not you or your system. If you CAN hear differences by switching ICs or speaker cables then the problem is not you.
Are you kidding? I've not heard it in person but people think the pair of your Krell Revolution speaker is top notch details. Now, I'm rasing my eyebrown not understanding why it's not working out on your Rotel?
Agree, let's keep the copper ON for few days of listening until you totally get use to the sound from your gear (WITHOUT modding or tweaking any thing), slide the copper away from the IEC plug, or yet, completely remove the copper from your system..... keep us posted.

I just said it because I could not think of any other posibility. The copper tweak works out for me, instantly.
Question 1: in Video deparment, has any1 gotten great result /improve when going beyond and trying this copper tweak on the little power cord to the back of the TV?

Question 2: who else has tried tapping a grounding wire from the back of chassis of the CD player to AC receptacle with have great result ?(as seen on Marantz video)
Hello, tweakers.
As TheAudioTweaker mentioned /tried before, I just applied hot glue around all 6 terminals /screws at both end of the plugs (male and female) and the sound is a little tighter. Ok, ok,!!! for 5 min quick listening, I will not confirm this hot glue technique changes the sound but, the fact is, both end of cable are heavier. More solid and.... ok, stop. I'm not gonna say it sounds better again. Most importantly, I feel better with this hot glue tweak and frmo this moment on, I'll add this step to my DIY power cable!

CHeers and happy tweaking.
WOw, I just realize that the Zu brand is using the same concept.
http://www.audiogon.com/cgi-bin/cls.pl?powrcabl&1245135330&/Zu-Cable-Bok-1-Meter-Power-cab