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In Reply to: RE: installing ERS posted by unclestu on September 02, 2011 at 17:01:58
I am surprised at the amount you use. I have applied the product, and play the unit being modified while installing it. It can suck the life out of the music in some applications and really help in others. Some chips benefit from a cover like you have done and others suffer IMO.
Follow Ups:
I agree, in fact I found leaving a square of ERS lying on the table in another room sucked the life out of the music. Every place I tried even a small square made the sound wooly, thin and hollow. The only way I could get the life to return to the system was take the ERS entirely out of the house. YRMV.
Edits: 09/07/11
That is some major suction. Could it have been your choice of music?
he wrote "bad" across the sheet.....and then forgot to place a crystal in the middle with a strip of rainbow foil.....
Stu
Edits: 09/07/11
Have you tried this with live music rather than recordings?
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
It won't affect the sound of an unamplified performance, however. It affects the sound of any electronic gear used to record that same performance, however.
RF is only one constituent which can recorded sound and playback. Magnetic fields also have a power effect. One of the finest tweaks I have implemented, has been the use of Z-sleeves. The designer Mark Hampton (?, forgot his last name) calls it a modified zero gauss chamber. Placed over interconnects and speaker cables and power cords, it has a most profound effect on the performance of those items, greatly increasing performance.
His Z sleeves look to be nickel plated tubes extensively wrapped with ERS, to lower RFI.
Stu
to suffer and that was debatable were a $10K esoteric and the Rega units.
Both employ a roll off circuit on the output jacks ( a capacitor to ground). Lifting one leg of the capacitor restores all the highs lost and then some with no additional hardness to the sound. The capacitor to ground roll off is used by many units to eliminate the so called digital "glare" electronically. I see it often in DVD players.In the case of the esoteric and a CJ unit, installation of the ERS, as illustrated, significantly increased the detail and accuracy of the output signal but it made the top end roll off quite noticeable. Eliminating or simply lifting the leg cures the issue as previously noted. In eliminating the RF within the component chassis, there is significant reduction in the "digital glare" which actually clouds a large amount of detail. In Volume 6 of the Positive Feedback,issue 5, IIRC, Doug Blackburn discusses mods to his Adcom 575 machine, and one of the mods was the elimination of the RFI within the component chassis. His writings were actually based on a modified HK unit I sent to him for review, and he wrote about his mods after copying mine (with my permission).
The Micro employs a direct coupled output, so the extensive use of ERS did not require any circuit mods. At any rate, simply lifting the ground leg of the roll off capacitor makes it easy to restore the circuit if you so desire.
Stu
PS: Should also add that it is critical to shield the chip sets on the bottom of the boards. The chassis actually reflect the RF generated by those chips and it echos throughout the chassis. Shielding just the top which is much more accessible, is simply not enough. In fact the reason why many chip sets are mounted on the bottom of the boards is to use the ground plane to further isolate, say, the servo functions from the DAC or analog functions.
Look at most SACD players and you'll see a large ground plane isolating the the front panel display from the rest of the circuit. There's a reason why they do that. My Marantz and HK CD players had a metal box to shield the analog section from the video and other digital functions. The idea here is isolate the digital RFI sources at the point of origin as much as possible. Not just a few but all if possible.
Edits: 09/06/11
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