Here is picture of current setup. Sorry about still messy wires. I fastly tried speaker cables without twisted wires and still feel that sound remains same.
So i strongly believe that main reason for my experience is from turn modules. And this is not first experience but real thing instead. I am absolutely sure about that.
Newer been happier to electronics 🙂
So i strongly believe that main reason for my experience is from turn modules. And this is not first experience but real thing instead. I am absolutely sure about that.
Newer been happier to electronics 🙂
Attachments
ackcheng said:
I ordered them from LC Audio. If you order them, please ask newer caps than i get (week 51/-98). T-nets also can found from Schuro http://www.schuro.de/index.html, though i am not sure if they deliver outside of EU.
Pasi P said:
I wouldn't expect that they'd have any newer unless they've been having problems with their current batch, and are selling old stock to DIYers who don't know better? Nah I'd never accuse em of that.
Watch you'll see, your caps worked fine and so will mine, nothing to be too paranoid over, maybe in another five years it'll be a real issue though.
Chris,
You are surely right. My caps works well and maybe only weaknes for their age is in my head
Anyway i think everyone take as new cap as possible. If possible.. 🙄
You are surely right. My caps works well and maybe only weaknes for their age is in my head
Anyway i think everyone take as new cap as possible. If possible.. 🙄
Pasi P said:Chris,
You are surely right. My caps works well and maybe only weaknes for their age is in my head
Anyway i think everyone take as new cap as possible. If possible.. 🙄
I fully agree there we should all get the best for our money, the "if possible" part is the factor here I think. I think you can actually buy them factory direct, I'm not sure how it would compare cost wise but I think you'd pay for that priviledge.
T caps
Hi all,
Wanted to show I am paying attention. Sounds like a perfect setup for a group buy! Any one want to volunteer?
Of course I would advocate a bank of smaller low ESR caps to do the same job at far less cost and final specs could easily be superior. Limiting factor would probably be available space.
Roger
Hi all,
Wanted to show I am paying attention. Sounds like a perfect setup for a group buy! Any one want to volunteer?
Of course I would advocate a bank of smaller low ESR caps to do the same job at far less cost and final specs could easily be superior. Limiting factor would probably be available space.
Roger
New Auricaps
Matt,
I am still waiting for the first evaluation samples to arrive. It shouldn't be too much longer now. Hopefully production won’t be far behind. I have been busy building 2 pair of mono block UcD 400’s to test them in so should be ready to do an A/B when they arrive.
Roger
Matt,
I am still waiting for the first evaluation samples to arrive. It shouldn't be too much longer now. Hopefully production won’t be far behind. I have been busy building 2 pair of mono block UcD 400’s to test them in so should be ready to do an A/B when they arrive.
Roger
Cap Group buy
I'd be interested in a group buy for either the slit foil or T caps.
A small array of low ESR caps like Panasonic FC, Elna Cerafines or Nichicon KG caps would be ideal.
However Australia is probably not the best place to organise a group buy - if the caps are from www.schuro.de it will have to be someone in the EU zone.
Regards,
Dean
I'd be interested in a group buy for either the slit foil or T caps.
A small array of low ESR caps like Panasonic FC, Elna Cerafines or Nichicon KG caps would be ideal.
However Australia is probably not the best place to organise a group buy - if the caps are from www.schuro.de it will have to be someone in the EU zone.
Regards,
Dean
If you guys go forward with the group buy of the slit foils, count me in... I've been wondering how could I get thorugh schuro policy of only selling inside the EU.
Allan
Brazil
Allan
Brazil
Has anybody compared those caps with Epcos Sikorel?
These Epcos cans make my juices flow 😀 but I only found them at RS in 10000uF/63V . In fact I ordered a pair to compare them to BHC ALS40: I will split my 4 channel UCD180 amp into two stereo amps.
Bigger sikorel (capacitance and voltage) can only be purchased in quantities of 22 or more told me a brazilian distributor. 😱
My UCD400 monoblock will have 60VDC and that makes me nervous about using the 63VDC caps. Probably nothing to worry about 🙁
What do you think?
I'm hoping to replace my DIY powersupply with the Hypex High Grade - I'll let you know if slitfoils sound different. - I'll still be on my old non-toroidal transformer though...
Maybe i won't be able to hear the difference, I won't be able to A/B it, so...
I'll comment on it anyway 🙂
Yves
Maybe i won't be able to hear the difference, I won't be able to A/B it, so...
I'll comment on it anyway 🙂
Yves
maxlorenz said:
IMHO no, that's not enough margin of safety even if 60Vdc is your worst case rail voltage. Please keep in mind these are "unregulated" raw DC supplies we're talking about so you want a healthy margin of safety of at least 20% voltage tolerance.
Saftey margin?
I agree, I am using 63 volt 105 deg caps with a regulated 60V supply and am concerned about supply pumping exceeding the margins. I hope 10k uf is enough to prevent a problem and it should be but it still makes me nervous. I am going ahead only because of the supplies being regulated and the fact that the 105 deg parts have more margin. I wouldn’t consider for a minute using them with this little of margin with unregulated power. Your stated 20% is even a little thin with unregulated power if you are using 85 deg parts.
Roger
classd4sure said:
I agree, I am using 63 volt 105 deg caps with a regulated 60V supply and am concerned about supply pumping exceeding the margins. I hope 10k uf is enough to prevent a problem and it should be but it still makes me nervous. I am going ahead only because of the supplies being regulated and the fact that the 105 deg parts have more margin. I wouldn’t consider for a minute using them with this little of margin with unregulated power. Your stated 20% is even a little thin with unregulated power if you are using 85 deg parts.
Roger
2nd try post for a group buy on slit foils
Anyone in the Euro zone interested enough to organise a group buy on the BHC slit foil caps? There are a number of us outside the EU who would love to try these but can't get our hands on them.
Regards,
Dean
Anyone in the Euro zone interested enough to organise a group buy on the BHC slit foil caps? There are a number of us outside the EU who would love to try these but can't get our hands on them.
Regards,
Dean
UCD cap replacements
All,
I have been doing further research on this forum about the options for replacing the caps on the UCD400. As a starting point I have:
Short out the internal DC coupling
2.0uf DC coupling in front of amp - Auricap
470uF 100v decoupling - elna cerafine
22uF 100v decoupling - blackgate STD.
10uF 63v (not low ESR) - blackgate STD
680nF output filter - Auricap Roger special (once done)
Bootstrap 180uF 16v - Oscon
I'm interested to see if anyone has been trying different caps in these spots and settled on favourite ones? Is it a good idea to mix blackgates & the Elna for decoupling? I cant find a wide enough supply of cerafines or the 470uF blackgate at a reasonable price.
I'm possibly thinking of ditching the input coupling cap and using direct coupling from all sources, as I will have a DC output protection after the UCD.
For the power supply:
- Separate 300VA toroid 40-0-40 power supplies per channel, separate diode bridges per rail. Star ground connection after the filter caps
- 2 x 10,000uF BHC slitfoils (if I can source them) per rail
- No zobel or smaller caps across the filter caps
- MBT10100 (10A) schottky diode with no snubber caps across the diodes.
- 0.82uF across the toroid secondary
- 8.2K bleeder resistor
Simple design and hopefully effective.
Regards,
Dean
All,
I have been doing further research on this forum about the options for replacing the caps on the UCD400. As a starting point I have:
Short out the internal DC coupling
2.0uf DC coupling in front of amp - Auricap
470uF 100v decoupling - elna cerafine
22uF 100v decoupling - blackgate STD.
10uF 63v (not low ESR) - blackgate STD
680nF output filter - Auricap Roger special (once done)
Bootstrap 180uF 16v - Oscon
I'm interested to see if anyone has been trying different caps in these spots and settled on favourite ones? Is it a good idea to mix blackgates & the Elna for decoupling? I cant find a wide enough supply of cerafines or the 470uF blackgate at a reasonable price.
I'm possibly thinking of ditching the input coupling cap and using direct coupling from all sources, as I will have a DC output protection after the UCD.
For the power supply:
- Separate 300VA toroid 40-0-40 power supplies per channel, separate diode bridges per rail. Star ground connection after the filter caps
- 2 x 10,000uF BHC slitfoils (if I can source them) per rail
- No zobel or smaller caps across the filter caps
- MBT10100 (10A) schottky diode with no snubber caps across the diodes.
- 0.82uF across the toroid secondary
- 8.2K bleeder resistor
Simple design and hopefully effective.
Regards,
Dean
roger, what kind of regulator do you use?
Have you tried an unregulated supply aswell and what are the differences, if any?
Have you tried an unregulated supply aswell and what are the differences, if any?
Regulators
This falls under the category of somewhat guarded information. I do intend to develop a commercial product and can't give everything away. Besides at this point it only looks good on paper so wouldn't want to disclose it yet anyway.
Roger
matjans said:
This falls under the category of somewhat guarded information. I do intend to develop a commercial product and can't give everything away. Besides at this point it only looks good on paper so wouldn't want to disclose it yet anyway.
Roger
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