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Dueland CAST PIO

Hello I had a few questions regarding this cap and was wondering if any owners who have heard this cap first hand can help me out.

I am thinking about adding this as a CAP upgrade on the speakers I am trying to get. I have heard from owners on forums saying it made a significant difference to their speakers for the better, but when I contacted some other speaker manufacturers they tell me that just because you add the Dueland CAP does not necessarilly mean you will get better sound. They say withs ome speakers they might sound great, but with some other speakers, they might even make the sound quality lower.

My questions are.

1. Will the Dueland CAST PIO cap upgrade change the signature sound of the speaker as intended by the designer?
Or will it simply make everything sound a bit better not effecting the original sound?

2. How much did the Dueland CAST PIO improve your system?

thanks.
ssos101
charles1dad's avatar
charles1dad
10,250 posts
 
Ssos101,
My crossover only has one capacitor which is at the tweeter and as I wrote
earlier the change was significant. I would speculate that if you only
replaced the tweeter cap in yours you should still appreciate the
improvement.

Salectric asks a good question, if the current capacitor is very average the
CAST will make a greater upgrade impact than if you already have a high
quality capacitor there now. For me the jump from Solen to CAST is a large
one.Mundorf Silver/Gold oil to CAST a smaller gap change would be
expected. Which location has the greater influence on the sound, tweeter or
the woofer? My gut says likely the tweeter capacitor. What does your
builder say? The CAST are so natural, the music reproduced just becomes
more real and has increased emotion .
grannyring's avatar
grannyring
6,576 posts
 
The jump from the Mundorf SGO is huge my friend as I have done it. Nothing special about that SGO Mundorf cap to be very honest. It is good, but a $10 JFX FB Premium film cap is better. Ya, I have compared both!

I would start with the Duelund caps on the tweeter. The improvement will be more than 10 percent and on the order of a significant amp upgrade.

Yes, do replace the tweeter cap first and enjoy for a while.

I have tried many caps and the Duelund CAST are special.

Your speakers are very good and deserve the Duelund touch!
salectric
757 posts
 
On my 2-way vintage speakers, the Duelund CAST cap made a much bigger difference when used on the high-pass (tweeter) than on the low-pass (woofer). In each case, the Duelund was replacing a Mundorf Supreme (regular version) so this was a fair evaluation.

In general, if funds only permit upgrading one cap in a 2-way crossover, I would go with a Duelund on the tweeter since that should give the biggest improvement for the buck. In a 3-way crossover, things are more complicated. It's possible the midrange may benefit the most but the crossover will also be more complex so you may need more Duelunds.
charles1dad's avatar
charles1dad
10,250 posts
 
Bill if the gap from the Mundorf SGO to the CAST is large I believe you as you've tried many capacitors and have much experience. I assume the SGO is better than my stock Solen capacitor so thought the contrast might be more subtle. The Vapor builder says 10% improvement, I wonder what cap is he comparing the CAST to?
Charles,
grannyring's avatar
grannyring
6,576 posts
 
Good question Charles. I assume one person's 10% is another person's 25%. Impossible to quantify and subjective reality.
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