JBL MS125S User Manual

MS125S

Low Frequency Loudspeaker System For Permanent Installation

Key Features:

䉴 Usable LF reinforcement to 35 Hz 䉴 2 x 15" LF transducers 䉴 Internal Low Pass Passive Network 䉴 DuraFlex ﬁnish, tough, weather-resistant

and paintable

䉴 Ultra Compact Optimized enclosure design 䉴 Dual Neutrik Speakon connectors 䉴 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.

Designed for permanent installation, the MS125S is part of the Marquis Series, a complete range of installation loudspeaker systems.

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

Sensitivity1: 100 dB, 1 W @ 1 m (3.3 ft)

Maximum Rated SPL: 134 dB, @ 1 m (3.3 ft)

Recommended Ampliﬁer3: 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.)

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.

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.

Marquis Series

JBL Professional 8500 Balboa Boulevard, P.O. Box 2200 Northridge, California 91329 U.S.A.

A Harman International Company

SS MS125S CRP 10M 1/98

䉴 MS125S Low Frequency System

Frequency Response is measured on-axis at a distance referenced to 1 m @ 1 watt (2.0 Vrms) input, shown as half-space (2␲) environment.