Ok IME Lead free solders have a range of critical temperatures and usage of liquid flux is critical.
My point/advice is getting Lead out of the overall equation is the very first thing to do.
Dan.
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There is 1 cap that had left an impression on me James but I couldn’t find it at the time. It’s a Philips cap with 4 terminals just like the T Network caps. Heard it on a friends amp very good sounding. Recall it was green sleeve with black markings.
I have a few alloys that I need to revisit, but suffice to say I reckon 99.3%Tin/0.7% copper sounds good but is bitchy to solder.
Dan.
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Hi gentlevoice,
What is an "Agilent Discovery"? Do you have a model number for it?
-Chris
What is an "Agilent Discovery"? Do you have a model number for it?
-Chris
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Yes I agree except.... I'm talkin' about another final filtering that overrides the caps sounds and for the better.
Dan.
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Well I find it difficult to obmit upstream cap sound with final cap Max cause somehow it will be in the mix. You’ll hear it if the resolution of your system is high. I try to minimize the effect right from the beginning. For starters I do no use toriod , in my early days in diy I already dislike the sound, I only use EI & if possible split bobbin. Diodes I’ve discovered a very very good one, its a Schottky Bridge from Japan, all I can say is its grainless compared to even high speed soft recovery diodes. From here I’ll start testing with different PS caps that I have on hand.
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Hi Jesper,
Me into esl speakers as well, I’ve got a pair of highly tweaked ML Odyssey which sounds even better then when I got it new. Lol
Me into esl speakers as well, I’ve got a pair of highly tweaked ML Odyssey which sounds even better then when I got it new. Lol
All of those parameters are related. But Vloss here is more similar to dissipation factor (tan alpha). When the dielectric material is similar, smaller dissipation factor is a good indication of a better capacitor.
Leakage current causes voltage drop. But leakage current parameter in a capacitor is measured long term, and with rated voltage. 'Vloss' I'm talking about here is the instantaneous voltage loss after the load pulse, and the applied voltage is of course much smaller. But like tan alpha, this is also a good indicator of good capacitor. At least, from my observation this is one simple parameter which has good correlation with cap sound quality in power supply (decoupling).
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From my experience, the core material and flux density of the power transformer has much more to do with to sound than split bobbin vs wideband design. A poor reputation of some toroids might be the high flux density and saturation due to slight DC mains offset. But IMHO, mains noise and capacitive coupling is one of the lesser evils.
Although they are one my favorite electrolytics, with a subjective tembral evenness, without a sense of shouting or dullness somewhere and a huge amount of microdynamics, I haven't compared these to all caps in the world. My proposition was to hand over a pair of them of a suitable value to someone who is willing to listen to them and share experience. Please tell me if you're a volunteer.
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I agree regarding the loss/quality factor. Throw in internal damping as well, since there are many caps that almost work like they should, but are easily set off to resonance.
Where can I find information about Vloss from the manufacturers?
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Hi Karl,
Im using this Bridge Diode for my power amp. Brand Shindengen.
Im using this Bridge Diode for my power amp. Brand Shindengen.
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Hi Sumotan, the green Phillips 4 pole is a new one to me - I wonder if it is a special production cap by Jensen as they are 'big' on 4 pole caps - I've been a bit remiss in not trying any of the Jensens - must try some of them too.
I'm like Karl and interested in that better diode - there's a thread here where they use a fet as a diode with excellent results that is being researched in Japan - is that the one?
Jeez Karl, those SPYV27s are really fast at 15nS - no graph of that recovery
I'm like Karl and interested in that better diode - there's a thread here where they use a fet as a diode with excellent results that is being researched in Japan - is that the one?
Jeez Karl, those SPYV27s are really fast at 15nS - no graph of that recovery
Btw AE50, what is this SiC & LL Sikorel are you speaking off ?
Not sure James all that I can say is this BD that Im using is very smooth sounding. Someone also mentioned Silicon Carbide Schokty diodes sound very very good but I’ve yet to try.
Not sure James all that I can say is this BD that Im using is very smooth sounding. Someone also mentioned Silicon Carbide Schokty diodes sound very very good but I’ve yet to try.
Ah, I see it, the Shindengen D6SBN20 (6A, 200V) bridge - there's an info sheet on 'google' but can't find a supplier - are they commonly available?
I've got some Cree CSD 010160 Sil Carbide diodes here that I couldn't get a good result - might have missed something I guess - I can send them up to you if you want to try them.
