The new 24S and 24S-D point source loudspeakers from d&b audiotechnik are set to
conquer permanent applications including night clubs, live performance venues,
houses of worship, multipurpose centres and sports venues. These latest additions
to the established xS-Series re-set the performance level for installation specific
point sources, and along with the arrayable xA-Series, all feature redesigned front
grills making them more unobtrusive than ever before. “The 24S, 24S-D and 21S-
SUB are designed to set and forget. They meet the exact day to day demands of
permanent installation with minimum fuss and maximum reliability.’ Explains
Wolfgang Schulz, Product Manager of installation products at d&b.

Differing only in horizontal dispersion, with 75° x 45° and 110° x 45° (h x v)
respectively, the 24S and 24S-D house two 12′ LF drivers in a dipolar arrangement
and a single hornloaded 1.4′ exit compression driver. This HF horn is rotatable,
meaning the 24S/24S-D can be mounted either vertically or horizontally. By
separating the LF drivers, they achieve constant directivity control in the same
plane as the dipole down to approximately 500 Hz. The result is a powerful single
box solution that avoids the transmission of energy into the reverberant field, and
increasing gain before feedback when working with open microphones. With a
frequency response extending from 55 Hz to 18 kHz, 24S and 24S-D are the perfect
all-in-one solution for any full range application.

With this extended bandwidth, the 24S and 24S-D point source loudspeakers are a
truly stand-alone option, while for applications with bass heavy program material,
the new 21S-SUB provides additional low end support from a conveniently small
footprint. Housing a single 21′ driver in a bass-reflex design, the 21S-SUB can be
operated in standard mode, to produce a frequency response of 35 Hz to 105 Hz, or
as a supplement to other d&b subwoofers in INFRA mode, extending the LF
performance to 33 Hz with an upper limit of 85 Hz.

In combination with the installation specific d&b amplifier, 30D, the 24S, 24S-D and
21S-SUB produce 138 dB SPL, 137 dB SPL, and 134 dB SPL respectively, and serve
as the ideal alternative to a small multiple cabinet line array. The flexibility of the
system makes it ideally suited whenever ceiling height and amplifier channel count
make a line array inappropriate, not to mention the budget benefits of the point
source approach.

With their purposefully designed larger cabinet volume, the 24S/24S-D deliver an
improved low frequency reproduction for a truly full range point source, yet are
modest enough to preserve sight lines and overcome rigging and placement
restrictions, continued Schulz. “The 21S-SUB is the perfect option for any install
when bass heavy program material is the name of the game, and is the perfect
companion for the 24S and 24S-D.’