They come in bags of 250 so there's well under a single bag's worth in this contraption. I haven't shown the ones I bought most recently which exploded - you just can't trust these Taobao sellers to tell you the correct working voltage...
I had to go back to the amp itself to work out what that was - its the post of the 4mm binding socket to connect to the speakers.
@SE - I'm not quite as much a bass freak as that
Don't tell JC but the input coupling caps are actually much, much smaller 1206 X7Rs 
@SE - I'm not quite as much a bass freak as that
se
You'll use 150000uF of rail capacitance but won't spring for PP or C0G coupling caps?
I've already sprung for them - have plenty reels of NP0, just too lazy to solder them all up as I wanted at least 1uF and the biggest NP0s are 100nF
Probably coz he was much more concerned about distortion (X7R comes with substantial voltage coefficient) than I. After all he'd invested a considerable amount in test gear. To me, if I can't hear it (and so far, I haven't) it don't matterI don't even think RocketScientist would use X7R for coupling
Yes, I agree it seemed extreme at first. But then I listened, added more caps and listened again. It made a difference to the LF dynamics - previously I could hear more low-level details on headphones, but with the extra caps the speakers have caught up a lot.
The amp'll play maybe 20s or so after I pull out the plug, depends on the music playing and the volume.
<edit> There's a way you can check if your current amp has enough capacitance, so long as you have a reasonably high impedance set of 'phones (or a trafo). Listen with the phones connected via resistive attenuator which presents a much higher impedance than a speaker. Then attach an 8R dummy load and listen again - if you hear the loaded amp gives poorer bass 'slam' you've just discovered your amp is undercapitalized
The amp'll play maybe 20s or so after I pull out the plug, depends on the music playing and the volume.
<edit> There's a way you can check if your current amp has enough capacitance, so long as you have a reasonably high impedance set of 'phones (or a trafo). Listen with the phones connected via resistive attenuator which presents a much higher impedance than a speaker. Then attach an 8R dummy load and listen again - if you hear the loaded amp gives poorer bass 'slam' you've just discovered your amp is undercapitalized
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John, that is just so disingenuous. Where do you pull this stuff from?
OK, no need to answer - we are in polite company.
Abraxalito,
I assume you are using those caps after a smpsu, do you think that is making up for a too small power supply side there?
Today has been a recovery day from the Blue Screen of Death, Microsoft got me again with one of their critical updates. no way to fix the mess they made! I'll talk to you offline later Richard.
I assume you are using those caps after a smpsu, do you think that is making up for a too small power supply side there?
Today has been a recovery day from the Blue Screen of Death, Microsoft got me again with one of their critical updates. no way to fix the mess they made! I'll talk to you offline later Richard.
I think, sometimes, that many here should try to understand a circuit, before they criticize.
It is a FACT that PMA found a problem in the switching logic years ago. After he informed us, we fixed it and I personally thanked him for his input.
Now, he talks about the 'UNEQUAL' LOADING of the -/+ outputs, respectively. Why would I do such a thing? Am I crazy? Please note that one side has a trim pot. Maybe, that will help. Yet PMA asked me about this within the last 24 hours, so I suspect that he too has not thought the circuit through completely.
It is a FACT that PMA found a problem in the switching logic years ago. After he informed us, we fixed it and I personally thanked him for his input.
Now, he talks about the 'UNEQUAL' LOADING of the -/+ outputs, respectively. Why would I do such a thing? Am I crazy? Please note that one side has a trim pot. Maybe, that will help. Yet PMA asked me about this within the last 24 hours, so I suspect that he too has not thought the circuit through completely.
I have corrected my fault yesterday in this post:
http://www.diyaudio.com/forums/anal...ch-preamplifier-part-ii-3833.html#post3458396
I have overlooked function of further relays.
(did the vispannetje in a semi-Rococo diner booth of the Corsendonks Hof yet, Jan with capitol J ?)
No, but did one at the Queen of the South in Hasselt years ago
Thanks for the tip, Corsendonkse Hoeve is ok.
jAN
... and you don't like transformers, so dc-coupling is your way to go. What's about your opinion regarding feedback - local and overall? In my experience amplifiers sound best with less / no feedback (zero overall & less / no local fb).
I think JC has answered your question about 10 000 times in this thread.
You might like to read http://www.parasound.com/pdfs/JCinterview.pdf
as well.
You might like to read http://www.parasound.com/pdfs/JCinterview.pdf
as well.
And when you're done, you can read a treatment of the same question by someone who bases his opinions on actual engineering and evidence rather than fashion.
http://www.linearaudio.net/images/onlinearticlesPDF/volume1bp.pdf
http://www.linearaudio.net/images/onlinearticlesPDF/volume1bp.pdf
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