Capacitor help

We all start somewhere
Post Reply
Bigman80
User
Posts: 185
Joined: Mon Jul 17, 2017 7:13 pm

#1 Capacitor help

Post by Bigman80 »

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.
User avatar
Nick
Site Admin
Posts: 15694
Joined: Sun May 06, 2007 10:20 am
Location: West Yorkshire

#2 Re: Capacitor help

Post by Nick »

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
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
Bigman80
User
Posts: 185
Joined: Mon Jul 17, 2017 7:13 pm

#3 Re: Capacitor help

Post by Bigman80 »

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.
User avatar
pre65
Amstrad Tower of Power
Posts: 21367
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex/Suffolk border.

#4 Re: Capacitor help

Post by pre65 »

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
The only thing necessary for the triumph of evil is for good men to do nothing.

Edmund Burke

G-Popz THE easy listening connoisseur. (Philip)
User avatar
Mike H
Amstrad Tower of Power
Posts: 20156
Joined: Sat Oct 04, 2008 5:38 pm
Location: The Fens
Contact:

#5 Re: Capacitor help

Post by Mike H »

+1 for Hi Fi Collective. The ClarityCaps are nice and affordable.
 
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."
Bigman80
User
Posts: 185
Joined: Mon Jul 17, 2017 7:13 pm

#6 Re: Capacitor help

Post by Bigman80 »

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.
User avatar
Nick
Site Admin
Posts: 15694
Joined: Sun May 06, 2007 10:20 am
Location: West Yorkshire

#7 Re: Capacitor help

Post by Nick »

With that size restriction, I would stay with the orange drops, they are not bad.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
Bigman80
User
Posts: 185
Joined: Mon Jul 17, 2017 7:13 pm

#8 Re: Capacitor help

Post by Bigman80 »

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?
User avatar
IslandPink
Amstrad Tower of Power
Posts: 10041
Joined: Tue May 29, 2007 7:01 pm
Location: Denbigh, N.Wales

#9 Re: Capacitor help

Post by IslandPink »

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.
"Once you find out ... the Circumstances ; then you can go out"
User avatar
Nick
Site Admin
Posts: 15694
Joined: Sun May 06, 2007 10:20 am
Location: West Yorkshire

#10 Re: Capacitor help

Post by Nick »

Whats the point of using them nose to tail given they are bipolar?
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
User avatar
IslandPink
Amstrad Tower of Power
Posts: 10041
Joined: Tue May 29, 2007 7:01 pm
Location: Denbigh, N.Wales

#11 Re: Capacitor help

Post by IslandPink »

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.
"Once you find out ... the Circumstances ; then you can go out"
User avatar
Nick
Site Admin
Posts: 15694
Joined: Sun May 06, 2007 10:20 am
Location: West Yorkshire

#12 Re: Capacitor help

Post by Nick »

May be right, I was asking not saying.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
User avatar
IslandPink
Amstrad Tower of Power
Posts: 10041
Joined: Tue May 29, 2007 7:01 pm
Location: Denbigh, N.Wales

#13 Re: Capacitor help

Post by IslandPink »

Somebody should try it both ways .... Bigman ?
"Once you find out ... the Circumstances ; then you can go out"
Bigman80
User
Posts: 185
Joined: Mon Jul 17, 2017 7:13 pm

#14 Re: Capacitor help

Post by Bigman80 »

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.
Post Reply