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Yeah looks good!

Nice rotating jig! Yeah diffraction related secondary sound source exhibition :D As you see response is different to any direction = only one listening axis can be adjusted for good direct sound balance = no possibility to change toe-in without changing system power response so in-room sound =...

I'll expand a bit: circular shape is worst only when the baffle is significantly bigger (in relation to wavelength) than the transducer, in which case diffraction backwave bandwidth increases and delay increases, both of which most probably make the resulting diffraction related interference...

Hi, yeah there is no off-axis data included in your post so it's hard to say anything about directivity, but a seen in the on-axis data it just shows diffraction related interference varies on all of these examples, and not any of them is particularly better than the other, just different. The...

Hi, typically one would make simple flat baffle, or, if you want to improve directivity than flat baffle provides make smooth curce and roundover to effectively remove edges and to approximate a sphere to reduce diffraction effects toward listening window. But since filament doesn't cost that...

Flutter echo is really bad on small apartment rooms with bare walls, really bad, it seems to be the dominant source of "noise" basically. Really long sustaining robot sound if you clap hands, really the most easiest to perceive so most dominant distraction. It makes conversation difficult for...

Here is illustration of flutter echo using Amacoustics raytracing tool. Simple sketch of the room with left loudspeaker and listener, but leave corners out to be able to really showcase the flutter. Basically it's just 1st, 2nd ... order specular reflections between you the listener and the...

Hi, clapping hands echoy sound is flutter echo, and it's a mid range thing mostly and really bad distraction while listening to music. Easiest would be to put some acoustic panels on the wall behind speakers, between speakers basically, and a thick curtain on the window wall. If possible put...

Yeah, why not, if double impedance (of voice coil inductance) at any frequency, the distortion should be cut in half, compensate with EQ. It takes more voltage from amplifier yes, but typically also power drops towards highs so likely lows still dominate how much voltage your amp needs to be...

Yes, you would have to crank put your amplifier output voltage, for the higher impedance load, to get same current through voice coil and same volume displacement and acoustic output as without the resistor. Some power would now be wasted as heat, but the load is also for the motor distortion...

Yeah hysteresis / barkhausen noise stuff is the gritty sounding variety, unrelated to the music and can do crackling kinda sound as multiple magnetic domains rotate cascading, or something like that. Purifi has a blog post on that too, and some audio samples here for example...

Hi, yeah it's exactly same phenomenon here working out by increasing series impedance, as what current drive is essentially all about. See this article to get to the base of it all: https://www.edn.com/loudspeaker-operation-the-superiority-of-current-drive-over-voltage-drive/ just ignore the...

Yeah it's bit of a different context, not sure if it was originally done to avoid capacitor or just enable first order filter in firat place, perhaps potential distortion reduction wasn't very important among benefits. Not sure how good distortion reduction this is for weeters anyway as motor...

Apparently this filter has a name: "sine-cap" filter. I first saw it mentioned here, likely very old trick. https://www.diyaudio.com/community/threads/passive-crossover-parts-in-active-speaker-system-possibilities-of-hybrid-crossover.389129/page-2#post-7093526 edit. This is some 14 years...

Hi, I'll extend a bit and explicitly mention that only current, and any current, through voice coil turns into acoustic sound.

Hi, depends on what accuracy you need from such VituixCAD project. If you export normalized data from VACS I think it has lost phase information which you might want if you actually try to fiddle with a crossover. Then, if at all possible try to BEM simulate at least few octaves beyond assumed...

i wrote that in a haste :D what I ment the results just weren't reliable in sense that I could not simulate the damping material so that it would match reality. Its about as good as it gets if you just put all inside walls damping some, and nothign to the apertures, like mabat did in ATH thread...

I experimented with it a lot few years back, and could not get to match real world speaker measurements. Doesn't mean it is not possible, but you likely won't find out the sims won't match reality exactly. I'd say build a prototype and experiment with it, faster and more real than sims in this...

I'm terribly sorry I did not remember the ealier discussion! I looked up your message history to find the speakers and the room, but somehow missed the listening room images and failed to make a connection. Thanks again for your report, it likely sounds really nice in there!:) Depth is the...

Hi, nice experimenting!:) Calculated from dimensions speakers are about 10' apart so MLP at ~11.5' from base plane makes speakers about at 21deg angle from the median plane, which is narrower than equilateral triangle, right? Is toe-in angle quite small, no toe-in or perhaps speakers point...