Unboxing and chassis
The slightly rounded longitudinal edges, which we already know from the older or larger models, are supposed to avoid harmful edge dispersions and so Nubert at least remains somewhat faithful to the body, which comes as a solid MDF box with the familiar black or white sanding varnish. In plain language, this means: little excitement, but with ironclad, Swabian consistency. The dimensions of 33 cm in height, 18.5 cm in width and 22 cm in depth (all without the front cover) make the box about the same size as its bigger sister X-3000 RC.
The speaker inlets and mounts have changed little from the older A-200, as the front mount screws are still visible. At least the tweeter has a kind of implied wave guide, which is quite helpful for the dispersion behavior. As usual, the bass reflex port is located on the back. The control unit with the big button on the front of the active box is also new, and I’ll come back to that in a moment. However, the 5.9 kilograms for the active speaker is a bit lighter than the X-3000 RC, the passive one weighs 5.5 kg, which is a bit less. Nevertheless, they are no lightweights, but they stand securely and slip-proof on a total of four rubber feet that can still be glued on themselves. If you want something different, feel free to upgrade.
The chassis of the Nubert nuPro SP-200 also come from Peerless, although the Danish company is now just a pure brand after being bought out by Tymphany and, like almost all American offshoots, has become “made in China”. At least with Peerless, this does not detract from the quality for now. In addition, it is always quite practical to produce the chassis, for example, right where you are sitting on large neodymium deposits. Rare earths, at least there, are not so rare and, above all, cheaper. The rest is an appealing series consistency that Nubert would hardly manage so perfectly with a complete in-house production. This way, however, one can calmly build on what already exists and optimize it even further.
For the midrange/woofer, Nubert relies on a newly developed 15-centimeter (148 mm) driver with a polypropylene composite cone for both the SP-200 and the X-3000 RC. The very large maximum excursion enables impressively deep and crisp bass despite the actually small diaphragm diameter of the drivers, because it has been possible to further increase the effective diaphragm area. Improved omnidirectional sound distribution and lower distortion are then included for the chassis. The die-cast basket and the rear ventilation suppress a possible heat buildup quite effectively, which we can see later in the teardown. This can significantly increase the load capacity of the chassis, especially in continuous use.
The newly designed dome tweeter with the usual diameter of 25 millimeters has an even more effective damping and improved radiation behavior, which is certainly also due to the slightly indicated wave guide. This tweeter does what it’s supposed to and works even better than the one in the older A-200s.
The (optional) covers of the front then hide exactly these two drivers, which are each driven by their own power amplifier. Since only one box contains the active control part, Nubert has provided the passive box with a dummy instead of the control knob, which is otherwise pushed through, for reasons of appearance (symmetry). The 4 magnets hold the panel quite firmly, although its feel lags a bit behind the otherwise solid boxes. This also applies to the rather cheap-looking control button, which does not really feel valuable.
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