If forms a system that covers the 20 Hz to 20 kHz frequency range with excellent clarity and dynamism. With an LR2 crossover at a low 60 Hz the woofers can be placed against the side walls of a room and the LXsirius used as near-field monitors. Path length differences to the listener can be compensated for in the DSP unit. Dipole woofers have the advantage of less room mode excitation and thus preserve articulation in bass sounds.
LXsirius+2 is a speaker that is on par with the LX521.4 in terms of frequency range, clarity, imaging, sound stage size and disappearance, albeit at lower maximum sound levels and particularly in the deep bass. The system is flexible in room placement and woofer setup, providing highly satisfying and enjoyable rendering of stereo recordings.
LXmini+2 (same acoustical concept of LXsirius+2) at Burning Amp 2016
»The sound is just amazing. I am delighted. With LXSub2 these are so different speakers. And it is not that there is more bass. Bass is just more swift but everything else is better, other frequencies, details, space, air. You propably know this yourself... «
Compared to the LXstudio the LXsirius+2 has the same low frequency response but it rolls off more steeply below 20 Hz to attenuate undesired subsonic signals. Due to the compact open baffle design and the fact that only two instead of four 10" drivers are used, the acoustic output is about 10 dB less than from the LXsub4 woofer of the LXstudio. This means that the LXsub2 has to be driven 10 dB harder, i.e. the cone excursions have to be about three times larger for the
same SPL as from the LXsub4. When using a 200 W/channel power amplifier this can lead to damaging excursions of the 10" driver at very low frequencies. So caution is advised. Start with a low volume level for playback of an unfamiliar recording, before turning up the volume and watching the driver cone for over-excursions, which also announce themselves as severe distortion. When operated with care the LXsirius+2 can handle any program material at enjoyable SPL.