Bose LT MB24 III Data Sheet
Information subject to change without notice www.pro.bose.com
PANARAY®LT MB24 Series III
Modular Bass Loudspeaker
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OF 4
Product Overview
The Panaray®LT MB24-III modular bass
loudspeaker is a compact, low-frequency
loudspeaker designed exclusively for use
with the Panaray LT mid/high-frequency
loudspeaker family.
The LT MB24-III integrates two 12" woofers in
a proprietary acoustic enclosure. This enables
the LT MB24-III to deliver high SPL and wide
bandwidth without audible port noise. The size
of the LT MB24-III has also been optimized so
that it can be used in multiple bass array
configurations.
Applications
The LT MB24-III loudspeaker is well-suited for professional
installations such as:
• Stadiums
• Arenas
• Houses of worship
•Auditoriums
•Performing arts facilities
• Dance clubs
• Outdoor* events facilities
*
LT loudspeakers can be installed outdoors under cover.
Product Information
Each Panaray LT MB24-III bass loudspeaker
uses two 12" low-frequency drivers built into a
proprietary acoustic enclosure.
The LT MB24-III can be operated in parallel or
discrete modes.
In parallel mode, a single amplified signal is
connected to the loudspeaker.
In discrete mode, each loudspeaker can be
independently driven by a separate amplifier.
Individual drivers are accessed through separate pins on the Neutrik NL4 connectors.
The 13-ply, marine-grade, Baltic birch
enclosure has sixteen hang points, four each
on the top, bottom and sides. Each hang point
will accept SAE
3
/
8
- 16 rigging hardware.
Key Features
• Proprietary acoustic enclosure provides clean, loud
bass with high driver reliability
• Enclosure size has been optimized to be used in
multiple bass array configurations
• High SPL without audible port noise
• 13-ply, marine-grade, Baltic birch enclosure
• 16 stainless steel hang points
• Contoured, powder coated, stainless steel grille
• Selectable parallel and discrete modes
• Designed for indoor and most outdoor applications*
• Optional bass array rigging accessories available
from ATM Fly Ware
®
PROFESSIONAL SYSTEMS DIVISION
Detailed Product Specifications – Acoustic
PROFESSIONAL SYSTEMS DIVISION
PANARAY®LT MB24-III
Modular Bass Loudspeaker
Information subject to change without notice www.pro.bose.com
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Additional Product Information
The Panaray®LT MB24-III loudspeaker requires equalization through the use of Bose
®
active equalization or by
using a high-pass filter and a low-pass filter. Equalization is
required for both parallel and discrete configurations.
Active equalization for the LT MB24-III loudspeaker can be
provided by using the Panaray LT MB24-III EQ card or the
Panaray system digital controller. A parametric equalizer
using a high-pass and low-pass filter can replicate the
active equalization curve below.
Recommended controller:
The Panaray System Digital Controller has a universal
power supply for worldwide use. Variants of the product
refer to the AC cord included with the product. There
are five variations.
Australia: PC 028024
Europe: PC 028022
North America: PC 028021
Japan: PC 028025
United Kingdom: PC 028023
Available EQ Cards:
MB24-III/MB4
active equalization card PC 028666
MB24-III/MB4 02
active equalization card PC 027058
Power Handling
1
Impedance
Sensitivity2(at 1W @ 1m)
Maximum SPL
3
(pink noise @1m @ rated power)
Frequency Range4 (± 3 dB)
Recommended Crossover
4 Ω
8 Ω
8 Ω
800W
400W
400W
Parallel
Discrete
Driver 1
Driver 2
40 Hz - 250 Hz
HPF: 40Hz, 4th Order
LPF: 250Hz, 4th Order
91 dB SPL
91 dB SPL
123 dB SPL
129 dB SPL (Peak)
117 dB SPL
123 dB SPL (Peak)
117 dB SPL
123 dB SPL (Peak)
94 dB SPL
Active Equalization Curve
On-Axis Response – Impedance vs. Frequency
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