True, but the harmonics of the DC are not exactly a problem....
These are coupling caps and "dc filter" is a wrong way of describing it. They do function as a dc blocker of course.
This thread has turned into a prime example of forum miscommunication. From the pic attached to post #1 i drew the wrong conclusion that the OP intended squeezing those lovely Jensens into the Cary and as a result tried to dissuade him as IMO the Cary wasn't worth the trouble and expense.
In the end it turned out no Jensens were about to be harmed; it was just an exercise of replacing a pair of mediocre, inappropriately sized china-caps with an almost exactly the same pair. Ironically, below what the Cary deserves 🙂
In the end it turned out no Jensens were about to be harmed; it was just an exercise of replacing a pair of mediocre, inappropriately sized china-caps with an almost exactly the same pair. Ironically, below what the Cary deserves 🙂
Trying my best to avoid coupling caps as much as possible.
All tube projects use amorhous or permalloy transformers but strangely in the dac i seemed to prefer caps and ended up using Clarity MR. It has been bugging me for a while as there is no good excuse not to dc couple in a dac. My old excuse was minimalism but the next dac will definitely be dc coupled.
Reading cap reviews and opinions on the net has not done me much good.
Especially if the reviewed caps are used in crossovers and i intend using them as couplers. Even more so if the reviewer specifically targets tweeter crossovers but my application is full range.
So, you don't manufacture any of your components? (off the shelf stuff is used in your projects)... pity you can't send me some of your work to try out? If I liked your work I would give very good reviews, but if I didn't like your work I would stay silent - no harm done - wink wink! I think there is a place in the market for your products!
True, but the harmonics of the DC are not exactly a problem....
In band filter caps I can see C0G or film (C0G is less critical on reflow profile if suitable values are available), but for coupling, I find a suitably large value to be more important as limiting the signal voltage developed across the thing trumps lower intrinsic distortion (Which is a function of signal voltage).
A DAC should really be able to be designed DC coupled with acceptably small offset at the output you would think.
Where the things become a problem is in speaker crossovers where high values and large signal voltages are needed in filters, but that is a fundamentally different application (And a good reason to add an extra power amp channel so the crossover can be done in the small signal domain at much more reasonable impedance).
What I have never really understood is why this cap fetish is so much of a thing on the replay side, but hardly even gets a thought among those designing studio electronics, the big desk manufacturers are all about 5532s as opamps and elcos as coupling, nobody bats an eyelid (There are a few companies specialising in adding 'secret sauce' of various tweaky sorts, but they get very short shift once you get away from the home studios).
Regards, Dan.
Yes, interesting comments - thank you!
These are coupling caps and "dc filter" is a wrong way of describing it. They do function as a dc blocker of course.
good point
This thread has turned into a prime example of forum miscommunication. From the pic attached to post #1 i drew the wrong conclusion that the OP intended squeezing those lovely Jensens into the Cary and as a result tried to dissuade him as IMO the Cary wasn't worth the trouble and expense.
In the end it turned out no Jensens were about to be harmed; it was just an exercise of replacing a pair of mediocre, inappropriately sized china-caps with an almost exactly the same pair. Ironically, below what the Cary deserves 🙂
In post 1 the pic was a (OTT) joke about using massive caps causing all sorts of parasitic inductance with long flying leads and massive voltage leakage. The cap needs to fit the design/circuit, it's all about design. Massive caps are inappropriate for the 100t design. Are there no smaller quality caps available in your opinion?
What does the Cary 100t deserve?
RESET THE QUESTION:
Does anyone know of an excellent output capacitor for the Cary 100t DAC?
Space is (at a push): Dia. 25mm X Len. 39mm.
Standard rating: 3,7Uf - 25v panasonic
Does anyone know of an excellent output capacitor for the Cary 100t DAC?
Space is (at a push): Dia. 25mm X Len. 39mm.
Standard rating: 3,7Uf - 25v panasonic
Standard rating: 3,7Uf - 25v panasonic
Does this come from a service manual?
3.7 is not at all a common value. A 25v rating indicates it is an electrolytic.
Does this come from a service manual?
3.7 is not at all a common value. A 25v rating indicates it is an electrolytic.
this comes from Cary: but the 25v is also a "+" so it could be 100v - 250v?
this is an exercise of replacing a pair of mediocre, inappropriately sized china-caps with an almost exactly the same pair. Ironically, below what the Cary deserves 🙂
What does the cary deserve please?
sounds like you are bias against ALL china caps? what data/evidence do you have to back up your aversion please?
I.M.O. the monacor is over priced and cheap, whereas the JB-JSX is well under valued as it has been compared to the best boutique caps by independent reviews and found to be "hot on the heals" of the usual 'big names', i.e. much better value (per buck $) - genuine bargain. IMO these are not "exactly the same pair" and they are not inappropriately sized.
What makes you think they are inappropriately sized?
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Check out the Obbligato range.
I use the standard MKP 630v 4.7uF capacitors for my DAC output ( each measures 25mm x 38mm) - they don't degrade the signal too much and are well worth a punt at $7 a pop.
Obbligato Film Capacitor 4.7uF 630V (PPE) | eBay
(checkout the Humble Homemade rating)
I use the standard MKP 630v 4.7uF capacitors for my DAC output ( each measures 25mm x 38mm) - they don't degrade the signal too much and are well worth a punt at $7 a pop.
Obbligato Film Capacitor 4.7uF 630V (PPE) | eBay
(checkout the Humble Homemade rating)
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Check out the Obbligato range.
I use the standard MKP 630v 4.7uF capacitors for my DAC output ( each measures 25mm x 38mm) - they don't degrade the signal too much and are well worth a punt at $7 a pop.
Obbligato Film Capacitor 4.7uF 630V (PPE) | eBay
(checkout the Humble Homemade rating)
THANX ~ are you referring to: Obbligato aluminium-foil MKP 630VDC - 5% tolerance @ humble?
That is the same cap I believe.
I have had a pair for around four years now - I tinker with everything else but not them😉
I have had a pair for around four years now - I tinker with everything else but not them😉
What makes you think they are inappropriately sized?
Only in respect of the physical size. What was the board supposed to carry? It should be obvious from the outline and lead spacing if it was an electrolytic or no. There should also be a polarity marking. Maybe you should upload a pic or two.
The Obbligatos are probably a sensible suggestion. Yes, Chinese made, but under directions and supervision from someone who really knows what they are doing. Never tried them myself.
Within the "sensible" price range are also the Mundorf Evo, but they do take a lot of space and are very awkward to mount.
Yes, Chinese made, but under directions and supervision from someone who really knows what they are doing.
What does this mean?
Means exactly what is written 🙂
My impressions of the manufacture and general concept of the caps may be a bit outdated though. Apparently rebadging French caps works just as well as making your own. Probably even better.
My impressions of the manufacture and general concept of the caps may be a bit outdated though. Apparently rebadging French caps works just as well as making your own. Probably even better.
The implication in that statement is that the Chinese don't know what they are doing. Is that what you really mean, or am I somehow misunderstanding?
That is the same cap I believe.
I have had a pair for around four years now - I tinker with everything else but not them😉
On 'humble' this rates 10- and it's only $7.50 per cap! don't think there are any other 10 rated caps for $7 ? (on 'humble') Seems too good to be true!!
This looks remarkably like a re-branded SCR MKP Axial SCR Audio 'Click'
...your thoughts?
Only in respect of the physical size. What was the board supposed to carry? It should be obvious from the outline and lead spacing if it was an electrolytic or no. There should also be a polarity marking. Maybe you should upload a pic or two.
The Obbligatos are probably a sensible suggestion. Yes, Chinese made, but under directions and supervision from someone who really knows what they are doing. Never tried them myself.
Within the "sensible" price range are also the Mundorf Evo, but they do take a lot of space and are very awkward to mount.
On 'humble' this (Obbligato) rates 10- and it's only $7.50 per cap! don't think there are any other 10 rated caps for $7 ? (on 'humble') Seems too good to be true!!
This looks remarkably like a re-branded SCR MKP Axial SCR Audio
...your thought?
Mundorf Evo's diameter is far too large.
The original fitment was RADIAL/rectangular.
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