Low Frequency
Loudspeaker System For
Permanent Installation
MS125S
Marquis Series
Key Features:
᭤ Usable LF reinforcement to 35 Hz
᭤ 2 x 15" LF transducers
᭤ Internal Low Pass Passive Network
᭤ DuraFlex finish, tough, weather-resistant
and paintable
᭤ Ultra Compact Optimized enclosure design
᭤ Dual Neutrik Speakon connectors
᭤ Hand Locations
The model MS125S is an ultra compact low
frequency loudspeaker system. The dual 15"
JBL low frequency transducers combined with
an acoustically optimized enclosure design
provide powerful transient bass with
minimum power compression and distortion.
The internal low pass passive network
replaces the need for an external electronic
crossover when using with other Marquis
Series systems in a complete installation.
The compact rectangular enclosure enables
this system to be located in discrete locations
or stacked together for maximum acoustic
coupling.
The rugged plywood construction of the
enclosure, along with a textured DuraFlex
finish and a heavy duty zinc treated steel,
foam-backed grille and treated cones enable
this Marquis Series enclosure to meet with
environmental test specifications.
Preliminary Specifications:
System:
Freq. Range (-10 dB): 35 Hz - 250 Hz
Freq. Response (-3 dB): 40 Hz - 175 Hz
Recommended High Pass: 30 Hz, 12 dB/Octave
Internal Low Pass: 200 Hz, 6 dB/Octave
Transducers:
Low Frequency: 2 x 2032H, 380 mm (15 in) dia.
Nominal Impedance: 4 Ohms
Input Power Rating: 700 W, AES; 2800 W Peak
1
Sensitivity : 100 dB, 1 W @ 1 m (3.3 ft)
Maximum Rated SPL: 134 dB, @ 1 m (3.3 ft)
3
Recommended Amplifier : 800 W (4 ohms)
Physical:
Enclosure: Rectangular cabinet, plywood
Environmental Specifications: Mil-Std 810, IPX4 per IEC 529
Finish: Black DuraFlex coating
Grille: Black powder coated zinc treated 18 gauge
perforated steel grille with foam backing
Input Connectors: 2 x NL4 Neutrik Speakon connectors
Dimensions: 922 mm x 569 mm x 572 mm (36.3 in x 22.4 in
x 22.5 in)
Net Weight: 45.5 kg (100 lbs.)
Designed for permanent installation, the
MS125S is part of the Marquis Series, a
complete range of installation loudspeaker
systems.
1
Measured on-axis in the far field with 1 watt (2.0 V RMS, 8 ohms) input and referenced to 1 meter distance using the
inverse square law. Listed sound pressure represents an average from 100 Hz to 500 Hz.
2
Recommended Amplifier is a power capability value that should be taken as a guide.
JBL continually engages in research related to product improvement. New materials, production methods, and design
refinements are introduced into existing products without notice as a routine expression of that philosophy. For this
reason, any current JBL product may differ in some respect from its published description, but will always equal or
exceed the original design specifications unless otherwise stated.
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