In a similar thread I mentioned that I feel Harbeths are overpriced (very overpriced) and overrated.
Alan Shaw clearly states that in the design of his speakers' crossovers: 'cost is no constraint' and also that: "we will add components and complexity to achieve, in combination with the shape of the cabinet and the characteristics of the drive units, the smoothest measurable frequency response"
A recent look at a Harbeth XO by GR Research found about 30 components in the XO! Unfortunately, although this can produce a nice flat frequency response, which will satisfy potential buyers but more importantly be favourably mentioned by the reviewers, will reduce dynamics and micro-detail. Low level nuance also suffers. If cost is no constraint, then are those cheap white sand-cast resistors the best he can do? Really?
Even with the above points the Harbeths I've heard, and no I do not remember the models, sound pleasant and smooth. Too smooth. To me they sound dynamically constipated.
I usually try to listen to 10CC's ... I'm not in love. Great music but not that well recorded. On the Harbeths this was not enjoyable at all. They suit well girl and guitar music.
I have nothing against the brand. I design speakers as a hobby, do lots of XO mods or complete rebuilds and know what a simple but carefully designed XO can do.
My last design had a total of 6 components in a 2-way speaker. A coil, cap and resistor in each section. I looked long and hard for a tweeter that was 3dB less sensitive so that I could eliminate 1 more resistor but could not find one with an extended smooth roll off below the XO knee.
Guys and girls, please try listening to a good full-range speaker to get an idea of the damage excessively complex XOs do. Sure, you won't get full deep bass and treble extension and dispersion suffers, but a good full-ranger can boogie. I'm not saying that full-range designs are the answer. Only that bragging about the number of components used in an XO is misleading.
There is much more to designing an XO than 'flat response' The Cumulative Spectral Decay (or waterfall plot) will reveal things like stored excess energy and other nasties which will tell you a whole lot more than a flat frequency response will.
After that rant: best is to just listen 🙂