The LXsub2 dipole woofer has
outside dimensions of 13"H x 12"W x 10"D
(330 x 305 x 254 mm) and uses the SEAS L26RO4Y long throw woofer, which is
the same driver as used for LXstudio and LX521.
Two LXsub2 woofers add articulate deep bass and rendering of spatial
dimension to the LXmini speakers.
LXmini+2 is a 3-way loudspeaker that combines the
LXmini with two, compact LXsub2 dipole woofers.
It requires addition of two 50 W power amplifiers and a miniDSP 4x10HD unit to form 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 LXmini 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.
LXmini+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 at Burning Amp 2016
to the LXstudio the LXmini+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. A 50 W amplifier is much safer to use and likely to clip
before the driver will. But it will also not allow for maximum excursion at 60
Hz. In my system I use two channels of an AT1806 (180 W/ch) to drive the LXsub2,
and 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
LXmini+2 can handle any program material at enjoyable