Best electrolytic capacitors - Page 36 - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 10th August 2011, 07:47 PM   #351
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
About
Capacitors with Large Capacitance :: ELECTRONICON Kondensatoren GmbH
you will find non polar caps (without electrolytic fluid) up to 19.000uF.
The ultimate solution for audio amp power supplies, if space and money doesn't matter. ICAR have similar caps, but only up to approximately 2000 uF.
  Reply With Quote
Old 11th October 2011, 04:56 AM   #352
gto127 is offline gto127  United States
diyAudio Member
 
Join Date: May 2007
I just wanted to share some opinions and experience on electrolytics that I have gained through several recapping projects over the last couple years.
Project 1: KPS20i CD player- I originally intended to recap this with original caps only to find they weren't available in original format. Nichicon claimed to replace the VX with VR & that they were equivalent. I recapped main supply with the VR series only to find the sound to be totally different. Bass was much thinner & the sound was not nearly as smooth. I did some research to find that the VR series & VX series have totally different specs. The VX have a much lower DC leakage current which I now beleive to be one of the secrets to the smoothness & powerful bass on this unit. I did more research to find that the Nichicon fine gold series has almost the exact same specs as the older VX series. I replaced all possible with fine gold series & the higher values with VX axial caps(Had to jumper some of these to fit).Now sound is smooth & bass is deep just like factory. I also experimented with replacing sprague 515D with Elna similac II in output section but ended going back with the sprague. Although the Elna is a surperior cap,. Krell had fine tuned the frequency response of this around the spragues. This leads me to believe you are better off not modifying a well designed unit on the output stages due to manufacturer bypassing these with high end film caps for flat response.
Project 2:Krell CD-DSP-I replaced the 470uf red caps at regulator stages with Nichicon Muse caps. This seemed to increase bass response of unit. These are also large low leakage caps simular to ones in first project .Bass is not as deep as KPS but definately deeper than original.
Project 3:Nakamichi PA-1 Power amp. I began this project by just recapping different stages with originals one at time to see which caps made the most difference in sound quality-basically I was just going from a old cap to a newer one of exact same type here. I was surprised with results.. Replacing main power caps made almost no difference,replacing coupling caps made little difference. The huge difference on this unit came from replacing the 470uf muse which appears to be on some type of feedback circuit(I don't fully understand the circuit on this one) C105(Left Channel) and 205(right channel and 705 center.
My next upgrade to this unit was replacing the standard coupling caos with higher end ones. I tried Nichicon KW series)(I have seen these used as coupling caps in alot of units) I also tried Elna similac II based on reading this thread & to me the similacs are superior when used as coupling cap on this unit. Clearer vocals & smoother sound overall.
My next project will be recapping CD pickup assembly with several differnt types of caps. It is a Phillips CDM1 mk II. any ideas on this one would be appreciated. Not sure to go with low leakage or low esr type on this. I will share results once I get throough it.
  Reply With Quote
Old 11th October 2011, 07:52 AM   #353
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
Quote:
Originally Posted by gto127 View Post
I just wanted to share some opinions and experience on electrolytics that I have gained through several recapping projects over the last couple years.
Project 1: KPS20i CD player- I originally intended to recap this with original caps only to find they weren't available in original format. Nichicon claimed to replace the VX with VR & that they were equivalent. I recapped main supply with the VR series only to find the sound to be totally different. Bass was much thinner & the sound was not nearly as smooth. I did some research to find that the VR series & VX series have totally different specs. The VX have a much lower DC leakage current which I now beleive to be one of the secrets to the smoothness & powerful bass on this unit. I did more research to find that the Nichicon fine gold series has almost the exact same specs as the older VX series. I replaced all possible with fine gold series & the higher values with VX axial caps(Had to jumper some of these to fit).Now sound is smooth & bass is deep just like factory. I also experimented with replacing sprague 515D with Elna similac II in output section but ended going back with the sprague. Although the Elna is a surperior cap,. Krell had fine tuned the frequency response of this around the spragues. This leads me to believe you are better off not modifying a well designed unit on the output stages due to manufacturer bypassing these with high end film caps for flat response.
Project 2:Krell CD-DSP-I replaced the 470uf red caps at regulator stages with Nichicon Muse caps. This seemed to increase bass response of unit. These are also large low leakage caps simular to ones in first project .Bass is not as deep as KPS but definately deeper than original.
Project 3:Nakamichi PA-1 Power amp. I began this project by just recapping different stages with originals one at time to see which caps made the most difference in sound quality-basically I was just going from a old cap to a newer one of exact same type here. I was surprised with results.. Replacing main power caps made almost no difference,replacing coupling caps made little difference. The huge difference on this unit came from replacing the 470uf muse which appears to be on some type of feedback circuit(I don't fully understand the circuit on this one) C105(Left Channel) and 205(right channel and 705 center.
My next upgrade to this unit was replacing the standard coupling caos with higher end ones. I tried Nichicon KW series)(I have seen these used as coupling caps in alot of units) I also tried Elna similac II based on reading this thread & to me the similacs are superior when used as coupling cap on this unit. Clearer vocals & smoother sound overall.
My next project will be recapping CD pickup assembly with several differnt types of caps. It is a Phillips CDM1 mk II. any ideas on this one would be appreciated. Not sure to go with low leakage or low esr type on this. I will share results once I get throough it.
good informations - thank you therefore. Check out also the results from VladimirK about follow URLs:
F3 Help
Output capacitor for Zen v4
  Reply With Quote
Old 11th October 2011, 07:12 PM   #355
gto127 is offline gto127  United States
diyAudio Member
 
Join Date: May 2007
Sorry I listed wrong caps (Quote 352) I replaced for CD-DSP. I actually replaced 1000uf uf red caps not the 470uf. The 470 uf caps are in output section. I would not reccomend replacing them with anything but originals.
  Reply With Quote
Old 12th October 2011, 02:59 AM   #356
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
I think that you'll notice its faster to replace power, local decoupling, nfb, output, input caps in that order. Some of the signal caps take a (5 best ideas, choose 1) type of approach, which is another way to say "a quick contest of peers."

So, its just really handy to have good clean power before making choices on signal.

In your post above stating that Elna Silmic II is a superior cap, I must say that a component is only as good as its application. I'd have probably used cerafine//small film cap (the definitive "classic combo") as one of 5 good options to interview.

There seems to be an omission.
If something like Silmic II or a huge power cap or something unusual happens to win a contest of peers because of better tone, that indicates the device being repaired has either a power circuit issue or it has an impedance mismatch at either input or output or both.
When you have a "tone challenge" do please be sure to apply a fix at the right spot first.
After that, then feel free to do whatever it takes for full function. That should be a lot easier, because applying a fix, first at the right spot, is more effective or at least a greatly helpful head start.
  Reply With Quote
Old 12th October 2011, 03:36 AM   #357
gto127 is offline gto127  United States
diyAudio Member
 
Join Date: May 2007
When refering to it as a superior cap it was in comparison to sprague 515D under normal conditions. I was just saying that the sprague sounder better in this instance because Krell engineers had bypassed the sprague with a couple of different film caps for best frequency output. By changing to the Similac it was throwing that balance off slightly giving the edge to the sprague in this instance. I also referred to the sprague on the Nakamichi AMP in a coupling application compared to the Nichicon but only tried the 2 caps. I'm sure there may have been a better combination If I had more to try.
  Reply With Quote
Old 12th October 2011, 05:22 AM   #358
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
Quote:
Originally Posted by gto127 View Post
I'm sure there may have been a better combination If I had more to try.
Yes, but its progressively diminishing returns for your effort.
That's why I mentioned just 5 peers for comparison. Some people would try 40 options but that's not going to make a significant further increase in quality.

A following touch up effort by quickly interviewing some "tiny value film cap" options can make a further increase in quality. Again, the choosing amongst 5 peers approach seems to be effective and labor efficient.

Basically, when you've already got it "really good" then significantly better doesn't exist--really when you've improved the quality already, there's just a very tiny margin left to play with.

P.S.
Small changes can make all the songs sound new, but this effect is very temporary and may be noise. So, watch out for that problem. This is a case where you want to re-analyze, choosing "good" rather than "startling" and when both options exist, perform more lengthy testing to remove any temporary stunts that make ears get tired. Clear is great, compression isn't.
  Reply With Quote
Old 4th June 2012, 07:37 AM   #359
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
Default Mundorf's M-Lytic Caps from Germany

Are there already experience with Mundorf's M-Lytic caps from follow URL ?
Mundorf M-lytic AG+ Capacitors homepage

Very interesting is the very high CV product (sizes for 22000uF/63V only 35x70 mm) and very low ESR at the same time.

Thank you for reporting
Attached Images
File Type: gif mundorf M-Lytic.gif (125.3 KB, 1093 views)
Attached Files
File Type: pdf Mundorf M-Lytic MLGO4.pdf (145.5 KB, 28 views)
  Reply With Quote
Old 4th June 2012, 11:35 AM   #360
diyAudio Member
 
Join Date: Mar 2007
Thin paper give bad sound
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
reforming electrolytic capacitors AndrewT Parts 27 13th March 2013 09:17 AM
Lots of NOS Electrolytic Capacitors! ungie Swap Meet 27 29th February 2012 02:38 AM
4 pole electrolytic capacitors AGGEMAM Pass Labs 7 22nd February 2010 01:58 PM
Electrolytic capacitors akis Parts 13 16th August 2009 05:13 PM
Electrolytic vs polyprop capacitors Puggie Tubes / Valves 2 15th September 2005 12:32 PM


New To Site? Need Help?

All times are GMT. The time now is 04:30 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2