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My dog tried to inspect the camera eye with his nose, which gave this funny perspective:

This is one of the Auxiliary tools in VituixCad (Tools>Auxiliary or F8).

One possible drawback i can think of is distribution of internal modes. As the height becomes close to depth the frequencies of relevant modes start to overlay: for comparison, the modes of the original box: On the other hand, internal modes didn't turn out o be a problem in the original...

Thanks a lot. A while ago, I was trying to figure out some formalization of what "open source" means in this case. I was considering using one of the Creative Commons options. Those CERN licenses also look interesting, although I would have to read them a bit more carefully since the topic is...

As this is a three-way system with fp1=650Hz the woofer is already filtered at fundamental port resonance frequency which is f=c/(2*port_length)=1.1kHz. At this frequency range the polyester fiber filling has also some impact on decoupling between the cone and the port.

I made the BR tunnel from a piece of HDF glued on slats. The port area corresponds to the area of a 3.5cm diameter tube. That is 1cm x 9.6cm of the tunnel opening, but the slats reduce its width which was taken into account. I thought I had a photo of this piece of HDF with the actual...

If this is the ND28F-6 tweeter, I can confirm that my pair also had some discrepancy, even up to 2-2.5 dB at 9.5 kHz (but considering the price, I didn't have much of a problem with that).

Regarding single ordering source, if you are within PE shipping range, you can try the following crossover version. Unfortunately some of the components are currently back ordered (for next month).

The frequency range of port operation is so low that it can be treated as an omnidirectional source, so I guess the port placement should have a marginal effect. But the "wooden box with an open front" can have its own modes and can also act as a kind of horn, and all of this can affect the sound.

Check the coil soldering in the tweeter filter. Did you sand the paint before soldering?

here it is:

It looks like you are on the safe side with 50V capacitors. With 20V RMS voltage at the terminal this limit won't be exceeded. There's a great tool in VituixCad called "Power dissipation" that can be configured to show the peak voltage on capacitors. The only capacitor with the 50V limit...

There seems to be some problem with your setup. I once measured the speakers at 96dB/1m spl level and I'm pretty sure the volume knob was not exceeding 11 o'clock position. My amp is a simple Denon 80W AB-class and your Fosi BT20A Pro is a 300W D-class amp, right?. The power seems to be enough...

The pdf and YT videos were created for the early versions of XMachina software and they were never updated. Later releases had short description for the new features. You can find an index of them here link. The delay parameter is for on-axis calculations only. The XYZ parameters in XMachina...

There is also an impact of the difference in the source diameters. In this case it could be estimated as 20*log(26mm/110mm)=12.5dB and this is more or less the difference between the tweeter and woofer graphs on the near field characteristics at 3.5kHz.

Interesting point. Below is my attempt to explain this effect, not necessarily completely correct or complete so please share your interpretations or remarks. Measurement in the far field reflects the radiated signal and to radiate a signal of the same level for a higher frequency, a smaller...

I added a note to the first post that component numbering in VituixCad and XMachina schematics may differ. The XMachina schematic was included there as a curiosity, I was a bit surprised that optimizer managed to create an E24 component where needed with only the E12 list available. (C6 and C7).

It's hard to tell until the ESR is provided for the replacement coils. They are surprisingly costly, I'd expect something air-core and thick-wired, which is not necessarily. Despite the high costs they would take lot of place and weight. For similar reasons consider bipolar capacitors >10uF...

I'm still learning too, the approach I'm currently using involves reaching a compromise in balancing the system's SPL vs PIR and PR characteristics, and if this results in some phase mismatch, I just let it go. For example, a possible effect of some phase mismatch could be asymmetry of the...

Extending the band towards low frequencies usually comes at the expense of sensitivity. My setup wasn't calibrated to measure sensitivity. Trying to estimate it basing on the manufacturer specs and filter transfer function magnitude I'm getting values ranging 80-83dB (so it's not a very accurate...