Capacitor help

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Bigman80
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Capacitor help

Post by Bigman80 » Wed Aug 23, 2017 12:06 am

Hi all,

I am trying to source some 4.7uf 63v capacitors. They are for a Jolida JD9 phonostage. I would prefer polypropylene but I can't find any anywhere. Don't this value come in polypropylene???

If not, what's the next best thing?

Thanks in advance.

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Nick
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Re: Capacitor help

Post by Nick » Wed Aug 23, 2017 12:14 am

http://uk.rs-online.com/web/p/polypropy ... s/8752033/

Whats it for in the phonostage

Depending on the use, budget and the space you have, there are dozens here.

https://www.hificollective.co.uk/compon ... itors.html
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Bigman80
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Re: Capacitor help

Post by Bigman80 » Wed Aug 23, 2017 8:22 am

Nick wrote:
Wed Aug 23, 2017 12:14 am
http://uk.rs-online.com/web/p/polypropy ... s/8752033/

Whats it for in the phonostage

Depending on the use, budget and the space you have, there are dozens here.

https://www.hificollective.co.uk/compon ... itors.html
Cheers Nick,

It's the coupling caps(?) Between the opamp stages. They a polyester (?) Currently. I'm not 100% sure of the technical terms lol.

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pre65
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Re: Capacitor help

Post by pre65 » Wed Aug 23, 2017 9:04 am

There is such a wide range available, the cost of some might make your eyes water.

I'd suggest the Mundorf Mcap supreme as a very good, but not absurdly expensive capacitor. Don't worry too much about the voltage rating.

Hi-fi Collective is your friend for upgraded amp components. :)

https://www.hificollective.co.uk/compon ... preme.html
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Mike H
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Re: Capacitor help

Post by Mike H » Wed Aug 23, 2017 12:51 pm

+1 for Hi Fi Collective. The ClarityCaps are nice and affordable.
 
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Bigman80
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Re: Capacitor help

Post by Bigman80 » Wed Aug 23, 2017 2:30 pm

Cheers guys, I currently have Mundorfs Supremes in and they are very good. Clarity caps are on the to do list though.

The Caps I want to replace are inbetween the three opamp stage (8 total) they need to be quite similar in size, about 18mm wide and quite squat. It's a bit difficult to find something similar. The one Nick linked earlier is too big which is a shame.

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Nick
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Re: Capacitor help

Post by Nick » Wed Aug 23, 2017 2:59 pm

With that size restriction, I would stay with the orange drops, they are not bad.
Resistance isn't futile it's V / I.

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Re: Capacitor help

Post by Bigman80 » Wed Aug 23, 2017 4:02 pm

Nick wrote:
Wed Aug 23, 2017 2:59 pm
With that size restriction, I would stay with the orange drops, they are not bad.
Thanks again, Nick. I appreciate your input.

It's going to be difficult, if not impossible to find anything to fit in that restrictive space

Damn.

Is there anything better?

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IslandPink
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Re: Capacitor help

Post by IslandPink » Wed Aug 23, 2017 8:01 pm

You might just find these are better ( not expensive either ) used as a pair, nose to tail.
https://www.hificollective.co.uk/compon ... on_es.html
They are non-polar.
You could use two 2.2u/50v or two 4.7u/50v if the value is not critical.
I used a pair like this , 1uF , on input to a chip amp - seem pretty transparent.
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Nick
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Re: Capacitor help

Post by Nick » Wed Aug 23, 2017 8:13 pm

Whats the point of using them nose to tail given they are bipolar?
Resistance isn't futile it's V / I.

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IslandPink
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Re: Capacitor help

Post by IslandPink » Wed Aug 23, 2017 8:26 pm

Wasn't it something to do with the distortion level being lower due to some aspects of the construction being balanced-out if paired that way ?
Didn't we discuss this in relation to how to find replacements for Black Gates ?
...obviously not !
In that case it came only from that thread about the TDA7297 mods, and I'm not sure who came up with the recommendation.
That's what Audio Note used to do with the NX and NH ones though.
"The bass is the king of the instruments - it has no known natural predator" (Wobble)

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Nick
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Re: Capacitor help

Post by Nick » Wed Aug 23, 2017 8:58 pm

May be right, I was asking not saying.
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IslandPink
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Re: Capacitor help

Post by IslandPink » Wed Aug 23, 2017 9:21 pm

Somebody should try it both ways .... Bigman ?
"The bass is the king of the instruments - it has no known natural predator" (Wobble)

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Re: Capacitor help

Post by Bigman80 » Thu Aug 24, 2017 12:48 am

IslandPink wrote:
Wed Aug 23, 2017 9:21 pm
Somebody should try it both ways .... Bigman ?
Erm?!?!! hahaha leave it with me. I like the out the box idea though.

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