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SB28 Dual 18-inch Subwoofer Speakers Audio System Sound
Transducers:LF transducer: 2 × 18" neodymium direct-radiating
Acoustics:Nominal impedance: 4 Ω
Usable bandwidth: 25 Hz - 117 Hz (-10 dB), 30 Hz - 90 Hz (-6 dB), 33 Hz - 70 Hz (-3 dB)
RMS power handling (Calculated using the mean impedance measured on the usable bandwidth): 655 W
Maximum SPL: 142 dB Peak level at 1 m under half space conditions using pink noise with crest factor 4
Physical data:Acoustical load: bass-reflex
Cabinet: premium grade Baltic birch plywood
Dimensions (W, H, D): 1300 mm, 550 mm, 700 mm / 51.2 in, 21.7 in, 27.6 in
Weight (net): 93 kg / 205 lb
Connectors: IN: 1 × 4-point speakON
Finish: dark grey brown Pantone 426 C
OMNI / CARDIO SUBWOOFER
L-VENTS
标题
Electroacoustic specs
TheSB28enclosure is a recommended subwoofer companion
for the K1, KUDO®, V-DOSC®and ARCS®systems, lowering the combined system
operating range down to 25 Hz.
The SB28 contains two 18’’ direct radiating LF
transducers integrated into a bass-reflex tuned enclosure. The specially
designed 18’’ transducers provide an exceptional cone excursion capability combined
with low thermal compression even at the very highest operating levels. The
bass-reflex vents feature a progressive profile allowing laminar airflow.The
association of the modern components with the new vents delivers a greatly
improved +5 dB peak SPL output compared to the previous standards.
The control and amplification of the SB28 is managed
by the LA12X platform. The DSP filtering encompasses advanced crossover
functions, system EQ, and L-DRIVE thermal and over-excursion protection of the
transducers. The L-ACOUSTICS®LA8 amplified controller offers the following
drive modes:
•The ‘‘standard’’ mode using SB28 as a companion to K1,
KUDO®, V-DOSC®and ARCS®,
featuring a low-pass filter at 60 Hz ([SB28_60]
preset) or closely coupledto ARCS®with a low-pass filter at 100 Hz ([SB28_100]
preset)
•The ‘‘cardioid’’ mode using SB28 as a companion to K1,
KUDO®, V-DOSC®,andARCS®,
featuring a low-pass filter at 60 Hz ([SB28_60_C]
preset)or closely coupledto ARCS®with a low-pass filter at 100 Hz ([SB28_100_C]
preset).
The performance of the SB28 enclosure depends upon the
choice of preset and physical system configuration.
Made of high grade Baltic birch plywood, the cabinet
also features industry standard Aeroquip®rails for line array rigging.
Physical specs
Low frequency limit (-10dB): 25 Hz
([SB28_100] preset)
Maximum SPL1: 142 dB ([SB28_100] preset)
RMS handling capability: 1225 W([SB28_100]
preset)
Components: LF: 2 x 18’’
weather-resistant,(4’’ coil, aluminium die-cast basket, vented magnet design)
Nominal impedance: 4 ohms
Physical data: W x H x D: 1300 x 550 x 700
mm - 51.2 x 21.7 x 27.6 in
Weight (net): 93 kg - 205 lbs.
Connectors: 1 x 4-pin Speakon®
Material: 18 and 24 mm Baltic birch plywood
Finish: dark grey brownPantone®426C
Front:polyester powder-coated steel
grill,airnet®acoustically neutral fabric
Rigging:integrated rails for flying,
stacking runners
Video
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