LT 9403 Loudspeaker Tech data sheet

LT 9403
full-range loudspeaker
• 90° x 40° coverage for short-throw applications in auditoriums, worship
facilities, performing arts centers and arenas
• Full-range loudspeaker with single 15” (381 mm) woofer provides 50
Hz bass to reduce need for additional low-frequency speakers in smaller
venues
• Bose® V2 midrange manifold sums output of 2 x 4.5” (114 mm)
extended-range cone drivers for lower breakup distortion and improved
transient response. Provides a smoother, more natural vocal range
compared to single 8” to 12” woofers. The LT 9403 loudspeaker utilizes
a single Bose V2 midrange manifold
• Bose large-format waveguide provides effective 90° x 40° pattern
control to approximately 300 Hz (horizontal) and 1.5 kHz (vertical).
Minimizes loudspeaker overlap in arrays to reduce comb-filter
interference and improve intelligibility
Product Overview
The Bose® LT 9403 is a full-range 3-way loudspeaker designed as the primary reinforcement source for smaller venues, or for use with
other LT loudspeakers to form Coherent Zone arrays in medium to large venues. The large-format waveguide and 90° x 40° pattern
deliver precise coverage and high intelligibility, providing a cost-effective alternative to multiple-cabinet line arrays for many applications.
Technical Specifications
System Performance
Frequency Response (+/-3 dB)
1
1
Frequency Range (-10 dB)
Nominal Dispersion
50 Hz - 16 kHz
42 Hz - 18 kHz
2
90° H x 40° V
Sensitivity (SPL / 1 W @ 1 m)
95 dB SPL
Maximum SPL @ 1 m
122 dB SPL (128 dB SPL peak)
3
Crossover Type
Passive, Bi-Amp, Switchable
Crossover Frequency
300 Hz and 1.8 kHz passive, 300 Hz bi-amp
Recommended High-Pass Filter
40 Hz with 4th order filter (24 dB / octave)
Loudspeaker EQ
Recommended
Passive
Long-Term Power Handling
500 W (2000 W peak)
Bi-Amp
Mid
300 W (1200 W peak)
Nominal Impedance
8Ω
8Ω
4
TECHNICAL DATA SHEET
Key Features
High
100 W (400 W peak)
8Ω
Transducers
Driver Compliment
HF: 1.75" (44 mm) voice coil compression driver
MF: Bose V2 midrange manifold with 2 x 4.5" (114 mm) cone drivers
LF: 15" (381 mm) woofer with 4" (102 mm) voice coil
Physical
Enclosure
Baltic birch plywood, 13-ply, 18 mm
Finish
Polyurethane-based textured paint, black or white
Grille
16-gauge perforated steel grille with powder-coated finish
Environmental
Indoor use only
Connectors
Two (2) parallel-wired NL4 Neutrik® Speakon® connectors
Suspension / Mounting
Sixteen (16) points SAE 3/8" - 16 threaded inserts (4 each: top, bottom, sides), steel
Dimensions
34.4" H x 24.1" W x 22.6" D (873 mm x 612 mm x 575 mm)
Net Weight
142 lb (64.4 kg)
Shipping Weight
165 lb (74.5 kg)
Product Code
Black
040182
White
040183 (Special Order Only)
Footnotes:
1
2
3
4
Frequency response and range measured on-axis with recommended active EQ in an anechoic environment.
Sensitivity measured in free field (no boundary-loading gain) with recommended active EQ, referenced to 1W/1m.
Maximum SPL calculated from sensitivity and power handling specifications, exclusive of power compression.
Power handling tested using pink noise filtered to meet IEC 268-5, 6 dB crest factor, 100 hours, with recommended EQ.
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full-range loudspeaker
TECHNICAL DATA SHEET
Directivity Index and Q
Beamwidth
Impedance
On-Axis Response
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TECHNICAL DATA SHEET
Wiring Diagram
Mechanical Diagrams
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Horizontal Plots
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TECHNICAL DATA SHEET
Vertical Plots
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TECHNICAL DATA SHEET
Architects’ and Engineers’
Specifications
The 3-way, full-range loudspeaker shall contain a 1.75" (44 mm)
diaphragm compression driver, a midrange manifold, which
utilizes two (2) 4.5" (114 mm) cone drivers in a heat-sink/acoustic
summation assembly, and a single 15" (381 mm) woofer. The
MF and HF transducers will exit into a large-format waveguide
with 90° x 40° nominal beamwidth and effective pattern control
to approximately 300 Hz (horizontal) and 1.5 kHz (vertical). The
15" (381 mm) woofer shall be loaded in a tapered transmissionline enclosure to reduce resonant peaks and port-turbulence
noise. An internal filter network with crossover frequencies of 300
Hz and 1800 Hz shall allow passive or bi-amp operation.
On-axis system frequency response shall be 50 Hz to 16 kHz
(+/- 3 dB) with recommended crossover and active equalization.
The system sensitivity shall be 95 dB SPL with 1 watt input and
be capable of producing peak output of 128 dB SPL on axis at
1 meter. In passive mode, the system shall handle 500 watts of
amplifier power (IEC 268-5 pink noise, 6 dB crest factor, for 100
hours) and have a nominal input impedance of 8 ohms. In biamp mode, the low-frequency section shall handle 300 watts of
amplifier power and have a nominal input impedance of 8 ohms,
while the mid/high-frequency section shall handle 100 watts of
amplifier power and have a nominal input impedance of 8 ohms.
The trapezoidal enclosure shall be constructed of void-free, Baltic
birch plywood with extensive internal bracing. The enclosure
exterior shall be treated with a polyurethane-based paint that
resists scuffing. The enclosure shall be covered by a 16-gauge
perforated steel grille with powder-coated finish. The loudspeaker
shall be rated for indoor use only. The enclosure shall have
sixteen (16) steel threaded inserts (4 each: top, bottom, sides)
that accept standard SAE 3/8"-16 rigging hardware. Inputs shall
be two (2) NL4 Neutrik® Speakon® connectors. Loudspeaker
dimensions shall be 34.4" x 24.1" x 22.6" (873 mm x 612 mm x
575 mm). Net weight shall be 142 lb (64.4 kg).
The 3-way, full-range loudspeaker shall be the Bose® LT 9403
loudspeaker.
All information subject to change without notice.
® 2012 Bose Corporation
All trademarks are those of their respective owners.
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