You may consider intermodulation (including Doppler) also. That would ask for a real three way, means not a 'sub', x/over ~ 250..350Hz, the classic 'tower'. E/g the Wharfdale are very successful with Linton and such, IM lowered by a factor of 10dB and more. A smaller midrange would help with bringing the center to center distance to the waveguide down, which would emphasize your unique selling point of a best-ever vertical dispersion.
At which exact post where you told so?
I raised this with Ascilab on the forum and they responded that they do have true 3-way towers planned. I agree with you that a 50-150Hz crossover between a 2-way and a sub does not offer the maximum benefit in reducing IMD. Where I disagree is the need to use smaller midrange drivers. In theory yes you could improve the vertical, but I don’t think it’s worth the extra engineering time when the existing crossover designs are so bloody good. Ascilab would also benefit from economies of scale by using the same mid-bass drivers in the towers.You may consider intermodulation (including Doppler) also. That would ask for a real three way, means not a 'sub', x/over ~ 250..350Hz, the classic 'tower'. E/g the Wharfdale are very successful with Linton and such, IM lowered by a factor of 10dB and more. A smaller midrange would help with bringing the center to center distance to the waveguide down, which would emphasize your unique selling point of a best-ever vertical dispersion.
Btw.: I recently raised the topic of 'lobing' in the vertical, and I was told, never mind, shut it down. Now people praise a solution to a non-problem. That's pretty much inconsistent, except ...
).
The problem with crossing at 3500Hz even if you use a smallish midrange driver, is that the result is vertical lobing.I would love to see a 3-way design/implementation from AsciLab with a midrange driver covering the range 350~3500 (ATC
I’d be curious to see which driver AsciLab will select for that all important midrange role.
A solid measuring active version of the above would probably be a good candidate to replace my KH310 if it comes to fruition.
www.spinorama.org
That would ruin the vertical (ATC). Except you consider the vertical as a non-issue. Or, it would still ruin it in my book.... a midrange driver covering the range 350~3500 (ATC
Me too, I would greatly appreciate that Audiophonics takes the distribution of Ascilab for EU.
Don't think so. The step from the usual +/-20° (or even less) vertical to +/-40° is huge. I made it with some effort to -20°/+60° (steered upward) and that's a difference even a layman can tell. The good vertical, despite symmetrical for no good reason, is the unique selling point for me.
Is it a misunderstanding? With "the vertical" I was addressing the coloration from 'lobing', the eyes in the plot you quoted. Anyway, the 'integrate in a room' is an argument, but as such might be untrue. I know, people say that often.
With regards to lobing, I believe there are two issues.
Maybe, because people got used to that weakness. Many also praise coaxials, which solve exactly that problem (while introducing others, of course). Since AsciLab the problem is a matter of choice.
I'm a little bit concerned about the technical aesthetics. It's just not graceful to have those lobes, and second to that, the argumentation with what "we" hear and should be aware of, isn't that nice either. Way too often the research confirms just the status quo ... excuses. Again since AscuLab we know that. Game changer, hence it has its selling point, don't lose it.
Speakers are always a matter of compromise. Knowing what human ears/brains are more or less sensitive to allows a speaker designer to make the best possible compromises. It also allows a prioritization of design goals to meet when given a price point to achieve.
