2. tech-talk
  3. 1314138026

The next best Tweak ???

There have been several postings at AA about a new tweak from the mind of a gent named unclestu that I would like to share with Audiogon members.

I really don’t know why it works or how it works.
This tweak will cost you about $10 bucks but hold on to your hats...

unclestu discovered that the Ground Control (that was designed by Bud Purvine and sold by AudioPrism)design could be improved on.

You will need to make two sets for your speakers.

What unclestu came up with is to take a 6V Lantern Battery, add a 1000uf Electrolytic capacitor across the top springs (+ to + and - to -) connect a wire to the negative side of the battery and then attach the other wire end to the negative post on your speaker.

I have also made a couple that I plug in to my Preamp and Amp. Those were made with RCA’s ground on the wire end and I used 9V batteries utilizing 9V battery clips.

I've got to say, big improvement across the board, Soundstage, bass, mids, treble. But the most dramatic change is in the dynamics.
128x128ozzy
60 responses Add your response
ozzy's avatar
ozzy OP
7,466 posts
 
Well, I have changed my mind on using the cap/battery on RCA source components, at least in my system. But do try them there yourself
Too many caps/batteries upstream on the source components and although they still widen the soundstage I think it thins out the bass.

So, just using the 2 sets of 10K 50 volt caps with 6V Lantern batteries on my bi-wire speaker cable ends is all that is needed.

But, another discovery is on my video. Using an RCA with 10K Cap and 9V battery seems to add more detail to my big screen LCD picture quality.

I still dont understand it, but well worth the experimentation.
slates
35 posts
 
Ozzy,
How long does the the 6v lantern battery last ?
ozzy's avatar
ozzy OP
7,466 posts
 
Since it is used as the ground and there is no actual current running through it, the battery should last as long as the battery has shelve life.
slates
35 posts
 
Well that's good to know, thank you.
Ozzy, I experimented with different quality electrolytic capacitors.
I found on my application the Elna RFS Silmic II 1000uF 50VDC to be
incredible, the dynamics are explosive, and the noise floor to be the quietest ever. I'm thinking of adding another set on the amplifier side soon.
ebm
9,311 posts
 
Don't wait until i do that!!
tiofelon
59 posts
 
Well I tried the tweek with 10000 uF at 25V. This tweek just works very well and I wonder if someone can shed the details about how it woks.
phduncanson
73 posts
 
Hey y'all - I read this thread , considered it , and tried it. I could not hear a difference in sound ;(. Idk maybe I'm doing something wrong but I don't think so. I've been on a quest to reduce EMI/RFI for a couple of years so I most def appreciate the sharing. I used 6v with the caps recommended by slates with hook up wire on the speakers. Wonder if I should try 10000k caps? I may have to spend the cash and try the walker hi def links. The only things that have had an audible (to me) change we're the blue circle thingee and the walker eliminator.
ozzy's avatar
ozzy OP
7,466 posts
 
Just thought I would revisit this tweak. I just tried it again on my Pass Labs Amp after a very long time with out it.
The regular ground control do little, but add the 6V battery and large cap and it excites...

If any are interested, I will post a picture of the finished item in my system page.
zycomatique
1 posts
 
Hi,

What said slate about the cap quality reminded me that:

http://tech.juaneda.com/en/articles/electrolyticcapacitors.html

ozzy did you test with top quality electrolytics?

thanks
ozzy's avatar
ozzy OP
7,466 posts
 
Zycomatique, No just the ones I had on hand.
Log in to respond
More to discover
80x80
B&W (Bowers & Wilkins) 801D4
80x80
Ayon Audio S-10 II Signature Network Player DAC Preamp
AWARD WINNING - REMARKABLE!
80x80
Focal 36 MONTH FINANCING