Mundorf silver /oil /gold vs Duelund CAST

After hours of testing Mundorf's S/O/G Caps mated with Scanspeaks new revalator dome we were not pleased with the sound of the Mundorf/scanspeak combo the results were disappointing: poor dynamics and contrived not natural sound with a loss of rated SPL.

However; coupled with the Duelund CAST capacitor the new tweeter actually and finally came to life. It is smooth, real, and dynamic with an open natural sound!

Perhaps the Mundorf is better with many more hours on her??

Go Duelund!
I`d believe the Mundorf capacitor will improve quite a bit with additional break-in hours.At that point it`s typically personal preference.

I have the Duelund CAST in my DAC and speaker. They were very good initially(first few hours) and progressed to a level of stunning once fully broken-in.

I have a few pairs of custom speakers with all Scan Speak drivers. I use all Cast Duelund with custom silver ribbon wire. So I am familiar with what you are working with.

If I was designing a speaker and the top end was rolled off then the Mundorf would be a cheap fix.

Using the Mundorf with a speaker that has tonal balance you will get more energy on top and shift the balance.

Duelund Cast works great with Scan Speak. As I mentioned in a previous thread I call them the Denmark Connection.

Stick with the Duelund and you will find you will have to spend less upstream.
There are always better-sounding parts to be found, but the question is whether the end user is willing to pay the premium for them at the outset. Sometimes the customer is stretching just to afford the product and adding another $1000+ for the upgraded caps sounds excessive at the time of initial purchase. However, say 2 years down the road, spending $1500 for an upgrade is much easier to swallow, IMO. Marketing involves tough decisions.
It would have been interesting to know how much of breakin both caps had when you did that comparison.

Anyhow, I once replaced Mundorf silver/gold (not oil) which had more than 1000 hours on them with teflon v-caps in my Omega Duos tweeter xo and the difference where dramatic. This showed me how average mundorfs caps are and how much music gets lost in them.
I use both and the Duelund CAST caps are simply in a different league. No kidding.
Mundorf to get significantly better with more hours but Duelund is simply in a different league - exactly as you would expect from the price difference.

My experience from listening to the speakers of a speaker maker I know is that Duelunds make a bigger difference than the drivers you use.

The Mundorf SGO will change over the burn in period and become more open.

The Duelunds are excellent and extremely natural sounding, leaving mundorf sounding hyped, etched, or a bit "hifi" by comparison to the duelund. But always remember the duelund is many times the price of the Mundorf and probably anything else. To quote Marie Antoinette "Let them eat cake". Trouble is its tough enough to find bread.
Duelund CAST is just a fantastic capacitor. I `m still waiting for the post where someone says,yeah I tried them and 'they`re just okay'. There`s always that one guy out there.
I agree that Jensen and Urishi are good alternatives to Duelund for less $$$ still not as good but very, very good just the same.
Regrettably, I'm not sure I can endorse the Mundorf SO SOG as we have had clearly better results with other German caps that "get out of the way" perhaps the Mundorf is for those wanting a more truncated sound.
I have tried S/G/O in a number of places and have never liked their sound. They always sound too bright and thin. On the other hand, my limited experience (so far) with CAST caps in both my speaker crossovers and as a coupling cap in my amps has been a total delight. They have amazed me from the first time I wired them up, and I have yet to hear any negative qualities with them. They are the only cap I have heard where I can't identify anything negative about its SQ.
the Cast's are crazy expensive (I need six in my crossovers). Any thoughts about copper or tin v-caps compared to the Duelands?