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In Reply to: RE: Speculation about the battery ground tweak posted by unclestu on May 11, 2011 at 12:43:41
Hi Stu,
What is the voltage you would recommend for solid state devices, including a CD player?
As for capacitors, what voltage rating do you recommend?
My experience with 6V, 1A - 4A sealed type lead acid batteries is really positive.
I could tell the same for installed 3300uF - 4700uF capacitance per component.
You are right, overall gain in volume increased just slightly.
To resume, I have achieved better dynamics, soundstage, detail, transparency and frequency extension.
Thanks,
Baki
Follow Ups:
to be a tease, but I only own tube gear, except for the CD players. It may take a while before I do more experimentation and come up with something definitive.
I do like the the larger 6.3 volt lantern type batteries on my CD player and I have tons of microfarads on it: actually whole farads ( since one farad low voltage caps are relatively cheap).
What is interesting and something I need to explore a bit more fully is that I have many large computer grade electrolytics: 450 volt at 1800 uF, measuring 3.5 inches in diameter and about 9 inches tall. Hooking up even the one farad caps to the battery does not really create any sparking even when the battery is connected. Hooking up the monster caps does produce sparking.
In terms of capacitance, they are smaller than the one farad caps I have used, so one would expect a great amount more of the sparking using the one farad caps. Its the opposite, however, even though the farad caps have excellent ESR ratings.
I do know that the miniature power supply caps employ "flash" cap technology, whereby they acid etch the foil to create more surface area and thereby increase capacitance. The large computer grade types use the traditional smooth foil, IIRC. I am wondering if the acid etching actually creates an issue. From a theoretical basis, capacitors are supposed to be parallel plates. The etching would mean that the surfaces are not really parallel, and the peaks may arc before the valleys do. When flash caps first gained popularity I did notice that they had a much brighter top end than the standard computer grade stuff.
I have to do more experimentation there too.
Stu
I have installed a 12V lantern type battery together with 47,000uF/16V capacitor on my cd player.
As for conclusion I would have to wait for couple of days.
Preliminary impression seems quite good.
Baki
Forgot to tell, my Tripath TK2050 based amp uses only positive supply. Instead of toroidal trafo I am using SMPS which provides only positive voltage.
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