PL100 3G in the house; tested them for the last 2 weeks.
In my opinion they are one of the better (best?) sounding bookshelfs speakers from Monitor Audio (in the last 5 years I had them all); maybe the current Silver 100 is a little bit more linear in the tweeter range (Dome vs MPD).
They sound neutral overall, with good low end for the size with open highs (without being sibilant); they project a wide soundstage with good enough separation between instrument (but not like KEF crazy good); I suspect the wide dispersion has a role here.
The midrange clarity is just great; they don't sound dark or muddy.
I made some nearfield drivers and port measurements + a full range nearfield measurement on axis; happy to see they targeted a flat frequency response and not went for the showroom bright sound:
- there are some mismatch in the crossover region (the tweeter goes down really fast); probably the floorstand versions, with the small midrange, does a better job integrating with the teeter.
- a resonant peak in the port (didn't heard it in my listening test from about 3.5m);
- the tweeter could be smoother in response but maybe we are seeing some diffraction from the measurement (the peak at 15k I suspect is real); despite that it has a good energy and presence (cymbals are there, very vivid, love the sparkles it offers)
Overall is a solid design from Monitor Audio with a compact form factor, beautiful look and finish, great for a medium size room; the sensitivity is nothing to write home about but with a good 150-200 WPC amp works just fine also in a bigger 45sqm room.
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