JBL MP255S Technical Manual

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

SPECIFICATIONS

ACOUSTIC & ELECTRICAL SPECIFICATIONS

Nominal Impedance:	4 ohms
Power Capacity:	500W (IEC Filtered Noise, 100 Hours)
Frequency Range:	34 Hz – 200 Hz (-10dB)
Sensitivity:	98 dB SPL, 1 Watt @ 1 Meter
Crossover Frequency:	200 Hz

AURAL SWEEP TEST SPECIFICATIONS

A. System Aural Sweep Test:	7.0V Input, 20 Hz to 1.2 kHz
B. L.F. Aural Sweep Test:	7.0V Input, 20 Hz to 1.2 kHz

PHYSICAL SPECIFICATIONS

Enclosure Dimensions:	950.2mm x 527.1mm x 940.2mm D (37.4 x 20.75 x 37.0 in. D)
Net Weight:	115 lbs. (52.2 kg.)

SYSTEM COMPONENTS

Cabinet: Enclosure MP255S (128-00441-01)
Grille: 380mm (15 in.) M115-8A (2) Transducer (124-67001-01X)
Low Frequency Transducer: 380mm (15 in.) M115-8A (2) Transducer (124-67001-01X)
DC Resistance: 5.3 ohms
Crossover Network: 336989-003

WARRANTY INFORMATION

Refer to Warranty Statement packed with each product.

PACKAGE

Warranty 59660
Owners Manual 336824-002
End Pad Top (2) 336990-001
End Pad Bottom Cover 337472-001
End Pad Bottom 337929-001
Microfoam (16) 49790D
Carton 990-00234-00
Speaker Pole 337315-001

WIRING DIAGRAM

Speaker, Low Freq 124-67001-01X (2)

Network 336989-003

SCHEMATIC (336989-002)

Connections:

Terminal 1 (+): RED, 250 2 mH L1

Terminal 1 (-): BLK, GRN

Terminal 2 (+): RED, 250 L.F. M115-8A

Terminal 2 (-): BLK, GRN/BLK

Connector: Neutrik NL4MPR (2)

Internal Wiring:

GRN/BLK to BLK/RED

BLK to BLK

GRN to GRN

BLK/RED to 205

205 to 250

COMPONENT EXPLODED VIEW

JBL MP255S

Main Unit Components:

Enclosure MP255S (Not for Sale)

Top Cover 337471-001

Bottom Cover 337472-001

Nameplate 336825-001

Network Assy 336989-003

Speaker, Low Freq. 124-67001-01X (2)

Grille 128-00441-01

Dust Dome 71646-03

Mounting Hardware & Accessories:

Handle (4) MP Series 923-00022-01

Pole, Mount Array 339268-001

Casters, 3" SWVL (2) 336991-001

Casters, 3" Fixed (2) 336992-001

Foot (4) 353445-001

Gasket (4) 360-07002-01 (per speaker)

Cap Bolt (16) 855-03012-16 No. 5/16-18 x 1 UNC, BLK

Washer (16) 845-00110-08 FLT 5/16

Screw (12) 883-31110-28 TRUSS, PH, PB, BLK, ZINC

Screw (4) 806-11010-20 1/4-20 x 1 1/4 FLT, PH

Screw (16) 804-41110-12 No. 10-32 x 3/4 PAN, PH, BLK, ZINC, LCS

Screw (24) 884-41110-12 No. 10 x 3/4 PN HD

Screw (6) 882-51110-12 6 x 3/4 OVH DPH

Screw (16) 804-01110-16 10-32 x 1 FIL PH BLK

Screw (4) 844-41210-16 10 x 1 PAN, PH, BLK

Note: Speaker pole used between this model and the MP215 is part number 337315-001.

	JBL MPro 200 Series User Manual: Specifications, Configuration, and Operation Comprehensive user guide for JBL MPro 200 Series loudspeakers, detailing product range, model specifications (MP212, MP215, MP225, MP255S), safe operating procedures, connection configurations, and warranty information. Includes technical data and operational guidance.
	JBL MPro 200 Series Professional Loudspeaker User Guide and Specifications Comprehensive user guide and technical specifications for the JBL MPro 200 Series professional loudspeakers, including models MP212, MP215, MP225, and MP255S. Covers product range, setup, configurations, safety precautions, block diagrams, speaker cables, warranty, and contact information.
	JBL Control 445C/T Premium Coverage Series Ceiling Loudspeaker - Specifications and Features Detailed specifications, key features, and technical information for the JBL Control 445C/T two-way 5.25-inch coaxial ceiling loudspeaker with RBI technology, designed for professional audio applications.
	JBL MR905 Technical Manual and Specifications Detailed technical manual and specifications for the JBL MR905 loudspeaker system, including acoustic, electrical, physical, and system component details, along with wiring diagrams and an exploded view.
	JBL Portable Audio Product Catalog - Speakers and Headphones Explore the range of JBL portable Bluetooth speakers, headphones, and audio accessories, including models like GO, CLIP 2, FLIP 3, CHARGE 2 PLUS, PULSE 2, HORIZON, XTREME, E-40BT, and E-50BT with their features and prices.
	JBL Cinema SB450 Owner's Manual: Setup, Features, and Troubleshooting Comprehensive guide to the JBL Cinema SB450 soundbar and wireless subwoofer. Learn about setup, connections, features like Bluetooth and JBL SoundShift, troubleshooting, and specifications.
	JBL PRX925: Professional Powered 15-Inch PA Loudspeaker - Specifications and Features Detailed specifications, features, and dimensions for the JBL PRX925, a professional powered two-way 15-inch PA loudspeaker. Explore its advanced acoustics, comprehensive DSP, 2000W power, JBL Pro Connect app integration, and robust design.
	JBL EON 600 Pairing Guide: Connect App Setup Comprehensive technical support guide for pairing JBL EON 600 series speakers, including the EON 612 model, with the JBL Connect App. Learn master reset procedures, Bluetooth connection steps for Android and iOS, and app control features.