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2. SL-SUB/SL-GSUB loudspeaker
Cardioid dispersion pattern
6
2.1. Intended use
NOTICE!
Only operate d&b SL-Series loudspeakers with a correctly
configured d&b D80 amplifier, otherwise there is a risk of
damaging the loudspeaker components and the directional
characteristics of the system cannot be achieved.
Product description
The SL-SUB and SL-GSUB are the cardioid subwoofers for the SL-
Series. They can be used to supplement GSL8 and GSL12
cabinets, either flown (SL-SUB) or ground stacked (SL-GSUB).
When the GSL Flying frame is used, SL-SUB cabinets can be flown
in columns of up to 14 cabinets.
Both cabinets are actively driven, 2-way bass-reflex designs
housing three long excursion neodymium 21" drivers. Two drivers
face to the front while one driver radiates to the rear of the cabinet.
Front and rear drivers are driven by separate amplifier/processing
channels and operate in independent bass reflex chambers.
Through its cardioid dispersion pattern, this setup avoids unwanted
energy behind the system and greatly reduces the reverberant field
at low frequencies providing highest accuracy in low frequency
reproduction.
The frequency response extends from 30 Hz to 90/ 70 Hz.
The cabinets are constructed from marine plywood and have an
impact and weather protected PCP (Polyurea Cabinet Protection)
finish. The front and rear of the cabinets are protected by rigid
metal grills. Each side panel incorporates four handles and
mounted on the rear panel are four heavy duty wheels.
Two runners extend from the rear to the front panel of each cabinet
protecting the bottom panel against scratching.
Two correspondingly shaped recesses are incorporated in the top
panel of each cabinet to accept these runners and prevent cabinet
movement when stacking SL-GSUBs or SL-SUBs.
The SL-SUB cabinet incorporates front and rear rigging strands
while the SL-GSUB comes without any rigging components and is
intended for ground stack purposes.
Cardioid dispersion
Cardioid dispersion avoids unwanted energy behind the system
and greatly reduces the excitation of the reverberant field at low
frequencies providing the greatest accuracy of low frequency
reproduction. The subwoofers can be used as stand-alone solutions
or in stacked combinations with a minimum distance of 60 cm (2 ft)
between adjacent cabinets or between the subwoofers and a side
wall. When positioned in front of walls, the minimum distance to
rear walls is maintained by the wheels mounted at the rear of the
cabinet.
d&b SL-SUB/SL-GSUB Manual 1.2 en
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