AXPONA 2026: Dutch & Dutch 15C Speakers

[Pearljam5000]

Realistically
What size room is the minimum for the 15C?

 

[amirm]

Since the speaker is relatively short, I would not worry about a room being too small for them. Of course, it doesn't make sense to put them in a bedroom.

 

[Sonny1]

Some people have ball room sized listening spaces I can imagine...

same reason I wear baggy pants…I like a lot of ballroom.

 

[Eddybiker60]

Well, the other way to look at it is how expensive everything has gotten. Took our Airstream RV Van to Mercedes for routine maintenance. And lane avoidance not working. Otherwise, the Sprinter van was working perfectly. The bill? A cool $6,000! I can just imagine how much they would charge if something was really broken in the darn thing. They charged me $305 per hour while hunting to find the lane avoidance issue! I thought this is what lawyers charged, not car technicians.

A job that can’t be offshored. Tell your kids.

 

[Eddybiker60]

The 8361 look like a real bargain.

I’d love to see a comparison!

 

[Audionaut]

Technical data for this speaker is still quite scarce, especially when it comes to the directivity of the waveguide/horn.

Judging from the geometry alone, I would expect something in the range of roughly 70 degrees, but without proper measurements that remains an estimate.

A sensible crossover to a 15" midrange would likely sit somewhere around 1–1.2 kHz when using a compression driver, which would also align with the need for directivity matching in that region.

Below 100 Hz, the system rely on two 15" woofers, which would put the effective radiating area at roughly 1700 cm².

Assuming typical excursion capabilities for drivers of that class, the displacement volume is probably in the range of about 1.5 to 2 liters.

Taken together, this suggests a system that is likely designed for controlled directivity and substantial low-frequency headroom - as heard by some members.

 

[Grotti]

Die technischen Daten zu diesem Lautsprecher sind noch recht spärlich, insbesondere was die Richtwirkung des Wellenleiters/Horns betrifft.
Allein aufgrund der Geometrie würde ich einen Wert im Bereich von etwa 70 Grad erwarten, aber ohne genaue Messungen bleibt das eine Schätzung.
Eine sinnvolle Übergangsfrequenz zu einem 15-Zoll-Mitteltöner läge bei Verwendung eines Kompressionstreibers wahrscheinlich irgendwo zwischen 1 und 1,2 kHz, was auch mit der Notwendigkeit einer Richtwirkungsanpassung in diesem Bereich übereinstimmen würde.
Unterhalb von 100 Hz verwendet das System zwei 15-Zoll-Tieftöner, wodurch sich eine effektive Abstrahlfläche von etwa 1700 cm² ergibt.
Unter der Annahme, dass Fahrer dieser Klasse einen typischen Lenkeinschlag haben, dürfte der Hubraum im Bereich von etwa 1,5 bis 2 Litern liegen.
Auch ohne vollständige Daten deutet das Gesamtkonzept eindeutig auf ein straff kontrolliertes System mit hohem Headroom hin – so wie es einige Mitglieder empfunden haben.

Forgot to translate?

 

[Audionaut]

Whenever a serious speaker hits the market, I always try to understand exactly what was done and why, which basically amounts to a bit of reverse engineering.
I need to test and measure the rear radiation of the woofer here at home, and maybe also try out the configuration with the ports on the side.

 

[Audionaut]

Forgot to translate?

Yeah, sorry. It had been translated, but then I made some changes and forgot to translate them.

 

[Talisman]

We had a kind invitation to come after the show closed to hear the D&D 15C "properly." And by properly, I mean live sound levels! In a hotel lobby no less!!!
View attachment 526350
As I have mentioned, these speakers are massive in volume. You don't know how big they are until you stand next to them, or look at the rear dual drivers.

These brought the house down! Nothing remotely in the show was playing at such levels.

Just one word: amazing!

If you have a large space, enjoy playing loud as much as I do, and want accurate sound, and spare change ($> 120K), these are the speakers for you.

Note that these are prototypes, driven by the amps and boxes you see in the middle. They weigh over 300 pounds and took four people to place on the stands.

Oh my goodness, finally some music I like instead of the usual whining that usually gets heard on these occasions.

 

[Jaxx1138]

All things considered, there is more about the 15C that have been executed well in its engineering than was done wrong. This would be an application specific type loudspeaker as these would offer no advantage in a small bedroom or office. But there are few peers to a design like this. I believe good measurements will bear out the true differences between these and Genelec or Danly labs large type monitors capable of high linear SPL's. Compression, and directivity plots will bear out the most significant differences as all of these monitors, as they are all very competently designed. As far as price goes, this is not a budget type product , and you are calculating some type of ROI or 'bang for dollar' then..... "These aren't the droids you are looking for".