If they were mine I'd consider poly.
I've also given your suggestion some thought.
Poly last longer, as electrolytic deteriorate over time, but poly vary considerably in sonic characteristics.
So, for speakers which aren't top end, isn't it better to get quality electrolytic's over pedestrian poly's?
I've also given your suggestion some thought.
Poly last longer, as electrolytic deteriorate over time, but poly vary considerably in sonic characteristics.
So, for speakers which aren't top end, isn't it better to get quality electrolytic's over pedestrian poly's?
I've seen the Pageant 2 speakers described as smooth, well balanced and non-fatiguing.
To return as close as possible to the original vintage sound, I would advocate fresh quality electrolytic capacitors.
They will keep the speaker on song for the next 40 years of its life!
Yes, electrolytic capacitors have a reputation going back a hundred years. It was once difficult to get a good lifespan out of them, but things have changed. Just use them within their specs.
Great advise.
As quality can vary I thought I'd experiment with the Mundorp ECaps, but just need to find a source in Australia.
Alternatively I'm open to electrolytic brands to avoid & brands to seek out.
Again, not so much these days. Often when people notice a difference they don't take into account the parasitic resistance of the capacitor. That's not the capacitor's fault. It's user error, and it can be compensated for.
There are many good brands out there. Take for example the Nichicon DB series, or something from Panasonic.
Thanks Allen.
Any economical Oz sources for the Nichicon DB series, or Panasonics?
I've gleaned Chinese Nichicon sources from the internet.
To be frank, in general terms, I find product from China is of very poor quality.
Then there is "copy" product rife.
I mean, a Chinese EBayer located in Shen Zhen lists his Nichicon Caps as being "Origin Japan".
How believable is that?
Also is BP-P the same as DB series?
Any economical Oz sources for the Nichicon DB series, or Panasonics?
I've gleaned Chinese Nichicon sources from the internet.
To be frank, in general terms, I find product from China is of very poor quality.
Then there is "copy" product rife.
I mean, a Chinese EBayer located in Shen Zhen lists his Nichicon Caps as being "Origin Japan".
How believable is that?
Also is BP-P the same as DB series?
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Nichicon is a Japanese brand. They've been making capacitors since before we could get anything from China.
Yes, it's a Japanese brand.
My concern is, are Chinese copying them, and how do I source quality versions?
If there are copies you can bet your last satang that the quality has been compromised.
My concern is, are Chinese copying them, and how do I source quality versions?
If there are copies you can bet your last satang that the quality has been compromised.
BP-S stands for 'bi-polarized series'.
Within that blanket description we have the DB series and the superior GB series - see PDF below.
https://www.hificollective.co.uk/sites/default/files/nich_db_gb_0.pdf
@CliffR52 has since expressed a preference for axial bipolar electrolytics.
From Mouser Australia:
Mouser 10 uF: https://au.mouser.com/ProductDetail/Cornell-Dubilier-CDE/106BPA050M?qs=3tP%2BN51vMXd/uEIqFC5ovQ==
Mouser 4.7 uF: https://au.mouser.com/ProductDetail/Cornell-Dubilier-CDE/475BPA050M?qs=3tP%2BN51vMXckO%2BnNYbRTag==
"Crossover Networks" are mentioned as an application for these "BPA" capacitors.: https://www.cde.com/resources/catalogs/BPA.pdf
I would regard these capacitors as electrically equivalent to the ELCAP capacitors originally fitted to the vintage crossovers.
I've also found an Australian supplier of Mundorf bipolar electrolytics: https://www.soundlabsgroup.com.au/c/Mundorf-Bipolar-Audio-ECAP.html
Unfortunately there's no inclusion of a 5 uF (4.7 uF), but two 10 uF caps could be wired in series if funds permit.
From Mouser Australia:
Mouser 10 uF: https://au.mouser.com/ProductDetail/Cornell-Dubilier-CDE/106BPA050M?qs=3tP%2BN51vMXd/uEIqFC5ovQ==
Mouser 4.7 uF: https://au.mouser.com/ProductDetail/Cornell-Dubilier-CDE/475BPA050M?qs=3tP%2BN51vMXckO%2BnNYbRTag==
"Crossover Networks" are mentioned as an application for these "BPA" capacitors.: https://www.cde.com/resources/catalogs/BPA.pdf
I would regard these capacitors as electrically equivalent to the ELCAP capacitors originally fitted to the vintage crossovers.
I've also found an Australian supplier of Mundorf bipolar electrolytics: https://www.soundlabsgroup.com.au/c/Mundorf-Bipolar-Audio-ECAP.html
Unfortunately there's no inclusion of a 5 uF (4.7 uF), but two 10 uF caps could be wired in series if funds permit.
Thanks G.
Cornell Dubelier have a good reputation as well.
I was thinking: : " Grab 2 of the 10uF ELCAP's & 4 x 4.7 uF Cornell Dubilier's".
Any issue with mixing brands?
Would the 10uF cap be filtering the tweeter in the MS's?
It being +-5% and a small probability it will do a better job over the Cornell Dubelier??!!
Cornell Dubelier have a good reputation as well.
I was thinking: : " Grab 2 of the 10uF ELCAP's & 4 x 4.7 uF Cornell Dubilier's".
Any issue with mixing brands?
Would the 10uF cap be filtering the tweeter in the MS's?
It being +-5% and a small probability it will do a better job over the Cornell Dubelier??!!
Good thinking, but you mean two 10 uF Mundorfs.
Not in my book!
The basic crossover circuit will be as follows:
@AllenB may confirm the position of the 10 uF cap, but I think it is probably on the woofer.
However, I wouldn't worry about the positioning. The proof will be in the pudding!
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The two caps in the third order high pass filter would normally have different values would they not?
If so, it would be 5 uF followed by 10 uf on the tweeter.