|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
72.208.175.210
In Reply to: RE: Isolation Transformer For Digital Sources? posted by lowrider75 on June 24, 2016 at 00:28:42
And keeping the RFI confined to the digital rig.
I use the Topaz Line 2 02406-01P3 1kVA ferro-resonant conditioner. Been using them for over 5 years.... They show up quite often on eBay. Relatively inexpensive compared to the high-end line conditioners out there now.
Follow Ups:
I heartily agree with this statement .Of all the "components" in my system , I think I may value my Equitech 1.5Q BPT as much as any other part of my system ( Maybe even a bit more ). I had been running my system through a PSA PP500 & was pretty satisfied with that configuration, but I was'nt quite prepared for the noisefloor drop that I experienced when I switched over to the Equitech .
For the better part of 2 days music listening I kept noticing that the played notes all seemed to have greater relief from where they seemed to be originating from ,on recording after recording. The music went from coming from a quiet place to coming from a quiet place with micro dimensionality attached to the music (that you weren't aware was even available from the recordings; & I'm not talking about music coming off of Vinyl here)
I ended up "repurposing" my PP500 to my Video system (Sony XBR,DVDO Edge, Oppo 95 BDP ,TIVO) where it's keeping me from thinking about upgrading,
Edits: 06/27/16
Inmate knewton is on the right track by asking him for more information rather than jumping to any premature conclusions.No properly functioning audio system should create digital noise in his speakers unless something is grossly wrong, whether he runs a power conditioner, power strip, or isolation transformer.... or not.
Such devices might seem to 'cure' his problem, but this problem should not exist at all in the first place.
My 2-cents worth.
Edits: 06/24/16 06/24/16
"No properly functioning audio system should create digital noise in his speakers unless something is grossly wrong, whether he runs a power conditioner, power strip, or isolation transformer.... or not."
What constitutes "properly functioning"?
Unless the product itself is designed with built-in mains isolation, I don't know of a digital audio source that doesn't add hash to the mains line. Whether it's "properly functioning" or not.
We can have faith that our digital sources don't put noise back on the mains line. But in my opinion, this tweak option doesn't hurt anything. (Except for a small ding to the pocketbook.) So this really isn't an issue at all.
Some folks may misunderstand the nature of various types of noise and associated power line filtering goals, in that digital noise, RFI, and EMI do not always tend to be audible in a gross manner, such as something one can identify or obviously point-out like audible high frequency hash or hiss, radio station broadcasts, and audible hum.
What is most beneficial about power line conditioners is addressing more subtle noise issues that are not so easy to identify, which pollute electronic parts/circuits in a manner that degrades the performance of those electronic parts/circuits performance rather than eliminating grossly audible noise artifacts. This is to say, even if you cannot hear any identifiable sounds that appear to be noise, the primary function of a power line conditioner is to allow electronic parts/circuits to function without a level of detrimental operational effects caused by more subtle noise issues that raise the noise floor.
As for isolation transformers, one might find a lowered noise floor at the expense of a degraded sonic signature caused by the isolation transformer itself, which is why isolation transformers intended for non-audio applications are not so popular with audiophiles. Like many things pertaining to audio gear, sonic trade-offs are often inevitable.
Thanks Todd. Is this small Topaz good enough to use for a DAC and transport?
http://www.ebay.com/itm/191842008876?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Beware of transformer noise. I had 2 and 5kVAs and both of them were noisy, at least in a50 Hz area. I had to banish one outside of my listening room.
Try to look for genuine ultra isolation units designed for the purpose. They are not cheap. Best if they give isolation figures over as wide a bandwidth as possible.
Perhaps you should ask ARC first as to why.
I hear a faint "hum" about 2 feet from the unit. That's not as bad as some other line conditioners I use, which can be heard a good 10 feet away. I run two units, one for the CD source on each system.The 1 kVA version should be plenty for a transport and DAC. (This unit should be robust enough for smaller power amplifiers or entire low-power systems.) It's the biggest isolation unit you can run safely off a standard 120V 15A outlet. (Topaz makes larger units, but require industrial mains that can handle more than 20A.)
Edits: 06/24/16
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: