Capacitor log Mundorf Silver in Oil


I wished I could find a log with information on caps. I have found many saying tremendous improvement etc. but not a detailed account of what the changes have been. I have had the same speakers for many years so am very familiar with them. (25+ years) The speakers are a set of Klipsch Lascala's. They have Alnico magnets in the mids and ceramic woofers and tweeters. The front end is Linn LP12 and Linn pre amp and amp. The speaker wire is 12 gauge and new wire.

I LOVE these speakers around 1 year ago they started to sound like garbage. As many have said they are VERY sensitive to the components before them. They are also showing what I think is the effect of worn out caps.

There are many out here on these boards I know of that are using the Klipsch (heritage) with cheaper Japanese electronics because the speakers are cheap! (for what they can do) One thing I would recommend is give these speakers the best quality musical sources you can afford. There is a LOT to get out of these speakers. My other speakers are Linn speakers at around 4k new with Linn tri-wire (I think about 1k for that) and the Klipsch DESTROY them in my mind. If you like "live feel" there is nothing like them. In fact it shocks me how little speakers have improved in 30 years (or 60 years in the Khorns instance)

In fact I question Linn's theory (that they have proved many times) that the source is the most important in the Hi-Fi chain. Linn's theory is top notch source with lessor rest of gear including speakers trumps expensive speakers with lessor source. I think is right if all things are equal but Klipsch heritage are NOT equal! They make a sound and feel that most either LOVE or hate. (I am in the LOVE camp and other speakers are boring to me)

So here goes and I hope this helps guys looking at caps in the future. Keep in mind Klipsch (heritage Khorns Belle's and Lascala's especially) are likely to show the effects of crossover changes more then most.

1 The caps are 30 years old and
2 the speakers being horn driven make changes 10x times more apparent.

Someone once told me find speakers and components you like THEN start to tweak if needed. Don't tweak something you not in love with. Makes sense to me.

So sound
Record is Let it Be (Beatles)
The voices are hard almost sounds like a worn out stylus.
Treble is very hard. I Me Mine has hard sounding guitars. Symbals sound awful. Everything has a digital vs. analog comparison x50! Paul's voice not as bad as John's and George's. Voices will crack.

different lp
Trumpets sound awful. Tambourine terrible. Bass is not great seems shy (compared to normal) but the bad caps draw soooooo much attention to the broken up mid range and hard highs that are not bright if anything it seems the highs are not working up to snuff. I have went many times to speaker to make sure tweeters are even working.

All in all they sound like crap except these Klipsch have such fantastic dynamics that even when not right they are exciting!

Makes me wonder about the people who do not like them if they are hearing worn out caps and cheap electronics? Then I can see why they do not like them! If I did not know better from 25+ years of ownership that would make sense.

For the new crossover I have chosen Mundorf Silver in Oil from what I have read and can afford. I want a warm not overly detailed sound as Klipsch already has lots of detail and does not need to be "livened up" they need lush smooth sounding caps. Hope I have made the right choice?

When the crossover is in I will do a initial impression on same lp's. Right now it goes from really bad (on what may be worn vinyl) to not as bad but NOT great on great vinyl. (I know the quality of the vinyl because tested on other speakers Linn)

The new caps are Mundorf Silver in Oil and new copper foil inductors are coming. I will at the same time be rewiring the speakers to 12 guage from the lamp cord that PWK put in. PWK was a master at getting very good sound often with crap by today's standards components.

The choice of speakers would be a toss up now depending on what I am listening to. Klipsch vastly more dynamic but if the breaking up of the sound becomes to much to effect enjoyment the Linn would be a better choice on that Lp. If I could I would switch a button back and forth between speakers depending on song and how bad the break-up sound was bothering me.

volleyguy

Showing 12 responses by ait

I use CAST PIO in the parafeed-type outputs of my Supratek preamp and they are NOT bass shy in the least. They sound full, rich, thunderous in the bass.
I have a pair of the new .22uF CAST and they are very close in dimensions to the Alexanders I have in the same value. The diameter is within a mm; the CAST are slightly longer but that could just be due to the epoxy on both ends of the paper tube.

Again, just going by looks here. I haven't listened to them side by side yet. Making them on the same production equipment as the Alexander would reduce costs, however.
Agreed. I've had both the Alexanders and CAST in my preamp, and the Alexanders are close to the CAST in tone and clarity. They are just slightly muddier sounding in the bass IMO than the hockey-puck CAST they were compared with.

The CAST that PCX has the special on are the third different style of 630V CAST I've seen. First were the hockey pucks, then the rectangular bricks, and now they look like standard cylindrical caps but with radial leads. I wonder if the different forms mean what's inside is different? The new ones look like standard machine-wound caps - is that the reason they cost less? Alexanders in a paper sleeve? No evidence either way, just askin'...
Not trashing Duelund or the caps, just observing. "Handmade" could apply to any part of the process, such as the fitting of the paper tube or the CASTing in epoxy, it doesn't necessarily mean 100% handmade.

I bought them too, so I hope they are still the same as the previous hockey-puck style I have. It's just interesting that after they invested in new equipment to make the Alexanders that the CAST changed to a form factor very similar to the Alexanders. On the PCX website it quotes Duelund as saying ..."Investments in larger production machinery have made it possible to do a high volume series of Duelund Capacitors, at much lower cost than previously possible". Perhaps they are leveraging the same machinery but using different materials for the CAST caps - I think I read at one time that they used "cocoon silk" in the CAST.

Making sure expensive machinery is running as close as possible to 100% utilization makes good business sense.

Maybe Frederik will chime in with an explanation.
Hmmm, the Duelund "discount" caps have been expanded to 10 values at PCX. PCX is still using the "volume discount" story, yet no answers to our questions about the change in form factor.
"Unless your 1.0 uF 630v is of the older flat variety - there is no difference except leadout and capacity."

OK, so the way I interpret this statement is that the older, larger diameter flat 630V CAST caps are of the same WPIO construction as the 100V Cast caps, just with a thicker dielectric layer. The newer, smaller diameter 630V CAST caps have the extra layer of "mystery material" between the paper layers to increase the dielectric strength and decrease the size.

I know a few of us had questions when the shape and size of the caps changed a while back, and we were assured that these were still genuine CAST caps...it seems they may genuine yet still different, though.
Here's a bit of heresy. I actually think Solens sound very good in the lower frequency ranges. I have them in the woofer (<150Hz, 200uF) and low midrange (150-800Hz, 70uF) circuits in my RSIIb speakers, and the sound is excellent. Far, far better than the electrolytics they replaced.

I do find they are not so good at higher frequencies, though. Every time I've used them on a tweeter I haven't liked the results. Harsh is the word that comes to mind.
Those Solen caps also measure very well on my LCR meter, with a dissipation factor that's borderline unmeasureable. Actually quite a bit lower than the Duelund CAST I've measured. Of course that's not the only important factor for a cap but it is interesting.
BigKidz,

You and Carl are welcome to cme over to my place (you've been there before when I owned Supratek) to hear my system with my new 833C amps and 26 preamp. I've fine tuned it over the last few months since I built the amps.
You can also bring over some of your stuff if you'd like to compare.

Let me know...Ait, aka Maxamillion (AA, AN), aka Magz (DIYA)
Oh, they sound excellent, but you can be the judge of that, I'm a little biased...