Audio Smile LBM Monitor Review

[a4eaudio]

Has it been stated somewhere but are the midbass drivers used in these monitors Dayton Audio ND91-4?

Post #49 suggested that. They are almost certainly those drivers.

 

[NotInYourHead]

Has it been stated somewhere but are the midbass drivers used in these monitors Dayton Audio ND91-4? At least in the photo on spinorama.org they look very similar.

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I have used the bigger brother, ND140-4 in a diy 2.5 way build and it can deliver huge amount of bass and has incredible xmech.

It is, the DIY guide shows the Dayton driver boxes

 

[Giulio]

Are the best active monitors for less than 500 USD?

 

[alanca3]

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Sorry, can't help but laugh at this end section of the whitepaper. If you squint your eyes, you might just know who the competitors are
The paper itself is detailed and highlights the good engineering that went into these speakers. I especially like the use of steel beams as internal braces.
This article by Robert White and Rod Elliot illustrates why steel beats wood for bracing: lightweight, doesn't take up as much space, yet it's far stiffer, which is crucial in controlling panel resonances.
EDIT: I thought about the tweeter. Such a low Fs (275Hz) and high excursion is difficult to achieve from conventional tweeters. I believe a miniature full-range driver, reminiscent of those Harmon Kardon used in their 2.1 systems, was used here (they even look similar).
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I genuinely love when papers do the bare minimum to censor the identity of competitor’s products. Feels like the author is giving me a wink lol.