[fault151]

Hi im after replacing the caps in my musical fidelity x-24k dac. It has x3 Jamicon 2200uf 16v caps and x4 Jamicon 1000uf 35v caps. I want to upgdrade them. What could i go for thats much better and same values?

Iv found some black gates 2200uf 16v caps on parts connexion, but they say they are just standard caps. They also have the better quality caps available in 2200uf but the voltage is different. Its 35v. Will this completely ruin the design f the dac if i used them?

Heres the link:

http://www.partsconnexion.com/catalo...ctrolytic.html

 

[sunseeker888]

With caps, you can always increase voltage, in fact thats a good thing to do in some cases, but leave capacitance alone to maintain original circuit parameters. However, physical size becomes an issue with larger voltage ratings.

 

[Uncle Erik]

Try not to use a voltage rating more than 50% or so of the original value. The problem you run into is that the capacitance changes when run at a lower voltage.

 

[fault151]

ok, what about makes? Any that are regarded as good? I know its an opinionated subject.

 

[nikongod]

the ultra-low ESR panasonic caps generally work out well for situations with lots of clicky noise (ie a dac.)

 

[fault151]

Quote:

Originally Posted by nikongod /img/forum/go_quote.gif the ultra-low ESR panasonic caps generally work out well for situations with lots of clicky noise (ie a dac.)

Where can i get some? I'm in the UK.

 

[Herandu]

Do you think that changing the power supply caps in the power supply path for a different brand will improve the audio performance of the audio signal path? How does that one work technically speaking?

 

[tomb]

The ratings of the caps mentioned are such that I doubt that they are signal caps. So, Nikongod is correct - low ESR caps would be best. Panasonic FM's are a great choice, followed by Nichicon UPW, UHE's or Panasonic FC's.

As far as improving the sound signature with better quality power caps - of course it will. The voltage and current all ends up going to the same place - the signal has to get it from somewhere.

Granted, the effects may not be as obvious as a true signal cap, but there should be an improvement.

The Jamicon caps are not of especially good quality and are known for premature failure, as well:
Badcaps.net - Badcaps Home

EDIT: Panasonic FM and FC caps are available at DigiKey. Nichicon UPW's and UHE's are at Mouser and DigiKey (DigiKey calls them PW's and HE's).

 

[fault151]

Quote:

Originally Posted by tomb /img/forum/go_quote.gif The ratings of the caps mentioned are such that I doubt that they are signal caps. So, Nikongod is correct - low ESR caps would be best. Panasonic FM's are a great choice, followed by Nichicon UPW, UHE's or Panasonic FC's. As far as improving the sound signature with better quality power caps - of course it will. The voltage and current all ends up going to the same place - the signal has to get it from somewhere. Granted, the effects may not be as obvious as a true signal cap, but there should be an improvement. The Jamicon caps are not of especially good quality and are known for premature failure, as well: Badcaps.net - Badcaps Home EDIT: Panasonic FM and FC caps are available at DigiKey. Nichicon UPW's and UHE's are at Mouser and DigiKey (DigiKey calls them PW's and HE's).

Ok cheers for your help. I'll order the panasonics fm's then.

 

[fault151]

Ok so im a bit confused as to how to order from digikey. Theres too many fields i need to choose that i don't know which i need. Its asking for temperatures, package case... I've no idea what i need for these parts?

All im after is the replacement of:

x3 2200uf 16v caps
x2 1000uf 35v caps

in the panasonic FM.

Can anyone help?

 

[Pars]

Just fill in the fields you know, generally one or two at a time in their search form, hit Apply Filters, then go on. For example, to search for a Pana FM 2200uf / 16V cap, I did the following:

1. Entered "capacitor" in the overall search form
2. Chose "Electrolytic-aluminum" (I knew these were electrolytic caps)
3. Once in the search form, I chose "2200uf" in the first field (capacitance) and hit Apply Filters
4. Selected "Radial" in the Package/Case field (I know these are radial caps... you could just go over to the right and select FM in the series here, etc.) and hit Apply Filters
5. Select "FM" in Series, and hit Apply Filters

Here, I see a few choices. Either a 16V or a 25V, both with 5mm lead spacing (how far apart the leads are). I might choose the 25V, but would first check either the catalog page (click on the part number, and you can go to the catalog page, which will provide dimensions, etc.) in order to make sure the height, etc. is appropriate.

 

[zipdisk]

You may want to check out the "Rock Grotto" site. Just google it. He is in Scotland, and does a lot of MF X-series mods. He gives good advice, and also sells parts/upgrade kits.

 

[fault151]

Quote:

Originally Posted by zipdisk /img/forum/go_quote.gif You may want to check out the "Rock Grotto" site. Just google it. He is in Scotland, and does a lot of MF X-series mods. He gives good advice, and also sells parts/upgrade kits.

Yeh im a member at rock grotto. Your talking about Mike aren't you? I emailed him but he says he doesnt deal with dacs, he's more geared up for the headphone amps.

Cheers anyway.

 

[fault151]

Quote:

Originally Posted by Pars /img/forum/go_quote.gif Just fill in the fields you know, generally one or two at a time in their search form, hit Apply Filters, then go on. For example, to search for a Pana FM 2200uf / 16V cap, I did the following: Entered "capacitor" in the overall search form Chose "Electrolytic-aluminum" (I knew these were electrolytic caps) Once in the search form, I chose "2200uf" in the first field (capacitance) and hit Apply Filters Selected "Radial" in the Package/Case field (I know these are radial caps... you could just go over to the right and select FM in the series here, etc.) and hit Apply Filters Select "FM" in Series, and hit Apply Filters Here, I see a few choices. Either a 16V or a 25V, both with 5mm lead spacing (how far apart the leads are). I might choose the 25V, but would first check either the catalog page (click on the part number, and you can go to the catalog page, which will provide dimensions, etc.) in order to make sure the height, etc. is appropriate.

Ok thanks for your help. Sorry if i sounds a bit thick, just didn't know which areas i needed. I'll give it a go and get back to you.

Will it be better for the dack to have the slightly higer voltage? The Jamicons are 16 v.

Cheers.

 

[fordgtlover]

In the panasonic FMs the
2200uf 16V is 12.5mm x 25mm the 2200uf 25V is 12.5mm x 35mm. Both have lead spacing of 5mm.
1000uf 35V is 12.5mm x 20mm the 1000uf 50V is 16mm x 25mm. The 35V has a lead spacing of 5mm. The 50V has a lead spacing of 7.5mm.

I am no expert on these, I am a reasonable new DIYer, but as I understand, if you have the extra room, the higher voltage cap may help, but are unlikely to harm.

Farnell UK is worth checking out for panasonic caps.