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In Reply to: RE: cMP - the open source high-end Memory Player posted by cics on December 30, 2007 at 05:42:01
I know this, at this moment, does not directly relate to cMP and computers but I think these things are worth a mention.
I got four of them yesterday and attached them to the two (each side) compression drivers in my speaker system and was very impressed what do for them. The TAD's are renowned for being agressive so one is always looking for ways to "smooth" them, which I thought I had made some strides. These things added yet another level of goodness to these things. No loss of detail but an added level of refinement.
There has been much said about these and the earliest adopter I know is Theo B.. I gave him a hard time about not bringing these things up. I decided after hearing them (got them yesterday) to say something.
They are attached to the ground side of your seakers or your electronics on the signal side.
I am going to get some more and see if there is a place for them on JULI@ and my DAC.
As with all tweaks: they may seem insane but what they give cannot be got any other way.
http://tweakaudio.com/EVS-2/EVS_Ground_Enhancers.html - for the seller
http://www.diyaudio.com/forums/parts/102180-groundside-electrons.html -
this is the thread that started it all. Read Bud Purvine's posts. He is the one who discovered the phenomenon.
Bye,
Rick McInnis
Follow Ups:
FWIW Rick many of the guys on Diyaudio say do not use these in digital circuits. But if you do try let us know how they work there.
Rick & Theob,
Now that you've had a month or so with the EVS Ground Enhancer tweaks, how are you using them and how do they sound?
I have a TON of respect for Ric & his work. I've had two of his modified DVD players in my system (still have them both around) plus use his tweaked Ice-Power-based amps. Pity he's not doing mods with the success of these devices, but I hope it's working well for him.
So I guess I need to go order some!
The other tweak that I've experimenting with are Alan Maher's CBT's... basically small boxes filled with gemstones. Yah, I was very skeptical when I heard about them, but the testimonial from John Swenson (another person I have a lot of respect for) had me try them. Now I have them in my circuit breaker box and on many of my AC plugs & power supply AC lines & transformers. I've been a bit in 'break-in' hell over the last couple of weeks, but things are beginning to settle in well. Benefits are decreased hash & increased clarity. I'm getting the most analog-like treble I've ever gotten from my cMP setup, surprisingly realistic vocals, and a large increase in bass definition. Well worth it and very cost-effective!
BTW, there have been some interesting (and often skeptical & acrinonious) threads on both of these tweaks on the 'Tweak Asylum', if you haven't noticed. Good application info on both, if you can wade through the flames.
Greg in Mississippi
Everything matters!
I'm still experimenting. I started with 20" of kk 4tc hanging off of my mid bass and e-panel negative terminals and it was a revelation...just as BudP said (check out the thread in DIY audio). I have been experimenting with 18 gage stranded cable and/or 30 gage teflon coated cable off my Buf32s dac balanced out grounds but I haven't decided which is better yet. I tried the 'hang on' a 9 volt battery to the mid-bass and sub woofer grounds and they are very good here. When I tried the battery on my e-panels it partially discharged them (thought I broke them). But after removing the battery and letting them charge for an hour or so they came back ok. So pls do not try on electrostatic panels. The battery though does take the sonic effects of the groundside tweaks I use to another level. But the battery on my dac output may be too much of a good thing (as BudP warns against). But this tweak (the groundsides) are very useful in tuning one's system. Sonic effects: increased clarity in entire spectrum, more dynamics, lower noise floor, better imaging. Even BudP admits his explanation as to why they work may be wrong but to me it sounds as if they are acting as a rfi/emi (esp wifi) traps. The best way to describe the sonic effect is that everything gets tighter but in 'over application' situations it gets strident. Key is to find how much your system needs/can tolerate. Maybe I need to get the commercial ones but so far I continue to use my diy's.
Hope that helps. Check out DIY audio...there are many diy tips as well as where to use.
Very helpful.
I'll have to get some of the EVS ones... plus try the battery tweak.
Strange about the battery tweak discharging your speaker's bias voltage... but on reflection, it makes sense. Most E-stats have a positive bias referenced to the ground connection... and since electrons are negative, that means that the positively-biased panel has a lack of electrons. You fed them into the panel faster than the bias supply could take them out.
OTOH, I wonder what it'd be like to rebuild the bias to do a negatively-biased panel? Can you say bilt-in electron supply!
Later!
Greg in Mississippi (who may just have to break those Acoustat 1+1's out of storage!)
Everything matters!
fellow inmates,
I was having a little lecture of a very respectable amplifier designer the other day, and he told me that a common grounding is absolutely essential for ultimate performance.
-not only common ground, he emphasized, but the very same point of grounding !
now, when I think about it, that seem to add to the theory of why separate power circuits in the cMP mashine are so convincing.
it could also explain in part, why some power phasing can be heard and others canīt.
can someone fill in on this ?
(stay grounded however :-))
kind regards
cMP2 Computer (XP minlogon) Intel E7400 cPlay039>Allocator>Lynx Two B. 2x AcousticReality Ref.202 & 2x 601īs ICEpower. Magnepan 3.3 beechwood frames & custom stands. Miller chokes.
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