I can tell you that so far, it makes zero difference in the end print or speed; if anything, it might be a touch faster on some prints. I even assembled to printer myself so even that variation is not enough to make a difference.I think the industry needs to better define "Input Shaping (IS)". Active shaping vs. Passive shaping???? While on the surface, IS is what Prusa is doing but with a different approach. They don't use accelerometers like other manufacturers. While they use Kepler, or some aspect of it, the variables are "preassigned" by Prusa and not "live". I don't know how much that really matters.
The other consideration is that Prusa is Open Source. That may be a driver for their approach.
Presumably, once the mechanicals are assembled, the harmonics and whatnot should be somewhat consistent for the design. It's the other factors that seem to be in question. Belts, motors, voltage...it's a long list. Preassigned inputs should be close, but live inputs would be more accurate. To what degree though?
I doesn't sound like the MK4 is on par with the Bambu X1C. Competition is good, and I'm confident Prusa can mount a better response over time.
Let's hope the XL is more mature on release, (I still haven't heard any word on my order, so I'm guessing not this year.)
I ordered it on Dec. 4, 2021. But I also ordered 2 tool heads, so I'm probably farther back in line. At any rate, I've received no prompt to review my order. (I plan to update it to 3 tool heads.)When did you order? Mine should ship on 31 July to 7 August. I am pretty sure my order is one of the oldest remaining. I ordered before they even announced it. I saw it in the shopping search.
You are a bit back. They start skipping the first day's orders of kits with 2 heads on 31 July or so. They are shipping day the first week of the built ones. I will post a review of the building once I built it. I ordered on that wasI ordered it on Dec. 4, 2021. But I also ordered 2 tool heads, so I'm probably farther back in line. At any rate, I've received no prompt to review my order. (I plan to update it to 3 tool heads.)