M R X 5 1 2 M
M R X 5 1 5
User’s Guide
M R X 5 2 5
M R X 5 1 8 S
M R X 5 2 8 S
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CONTENTS
Before You Begin - Important Information
2
3-5
5-6
7-9
10
Product Specifications
Recommended Amplifiers, Infrasonic Filters, DuraFlex™ and Pole Mounting
MRX Series Block Diagram
Basic Configuration
Sub/Sat Configuration
11
Speaker Cables
12
JBL Limited Warranty
13
JBL Professional Contacts
14
Explanation of Graphic Symbols
Important Safety Instructions
The exclamation point within an equilateral triangle is
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings
intended to alert the users to the presence of impor-
tant operating and maintenance (servicing) instruc-
tions in the literature accompanying the product.
4. Follow all instructions
The lightning flash with the arrowhead symbol, within
an equilateral triangle, is to alert the user to the
presence of insulated “dangerous voltage” within the
products enclosure that may be of sufficient magni-
tude to constitute a risk of electric shock to humans.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with
manufacturers instructions.
8. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus that produce heat.
CAUTION: TO REDUCE THE RISK OF
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN!
ELECTRONIC SHOCK - DO NOT REMOVE
COVER. NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED PERSONNEL.
9. Do not defeat the safety purpose of the polarized or grounding-
type plug. A polarized plug has two blades with one wider than
the other. A grounding-type has two blades and a third grounding
prong. The wide blade or the third prong is provided for your
safety. If the provided plug does not fit your outlet, consult a
electrician for replacement of the obsolete outlet.
DO NOT EXPOSE
TO RAIN OR MOISTURE!
ATTENTION: POUR EVITER LES RISQUES DE
CHOC ELECTRIQUE, NE PAS ENLEVER LE
COUVERCLE. AUCUN ENTRETIEN DE PIECES
INTERIEURES PAR L’USAGER. CONFIER
L’ENTRETIEN AU PERSONNEL QUALIFIE. AVIS:
POUR EVITER LES RISQUES D’INCENDIE OU
D’ELECTROCUTION, N’EXPOSEZ PAS CET
ARTICLE A LA PLUIE OU A L’HUMIDITE.
ATTENTION
RISQUE DE CHOC ÉLECTRIQUE
NE PAS ENLEVER!
NE PAS EXPOSER Á
LA PLUIE NI Á L'HUMIDITÉ!
10. Protect the power cord from being walked on or pinched,
particularly at plugs, convenience receptacles, and the point where
they exit the apparatus.
11. Only use attachments / accessories specified by the manufacturer.
12. Use only with a cart, stand, bracket, or table
specified by the manufacturer or sold with the apparatus. When a
cart is used, use caution when moving the cart / apparatus combi-
nation to avoid injury from tip-over.
The IEC fuse symbol pictured at the left represents
an approved user replaceable fuse. When replacing
a fuse, make sure to replace with only the correct
type and fuse rating.
13. Unplug this apparatus during lightning storms or when un-used for
long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is
required when a apparatus has been damaged in any way, such as
power-cord or plug is damaged, liquid has been spilled, or objects
have fallen into the apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or has been dropped.
15. To reduce the risk of fire or electric shock, do not expose this
apparatus to rain or moisture.
1
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BEFORE YOU BEGIN
SPECIFICATIONS
MRX512M - 12¨, two-way, bass-reflex, utility / monitor speaker
Frequency Range (-10 dB):
Frequency Response (±3 dB):
Coverage Pattern:
Crossover Mode:
Crossover Frequency:
Power Rating:
(Continuous / Program / Peak)
Maximum SPL:
System Sensitivity (1w @ 1m):
LF Driver:
HF Driver:
Nominal Impedance:
Enclosure:
Suspension/Mounting:
Transport:
60 Hz - 20 kHz
90 Hz - 20 kHz
70º x 70º nominal
Passive
1.7 kHz
400 W / 800 W / 1600 W, 2 hrs1
350 W / 700 W / 1400 W, 100 hrs1
123 dB SPL continuous (129 dB SPL peak)2
97 dB SPL
1 x JBL 262H 305 mm (12 in) Differential Drive® woofer
1 x JBL 2408H 37.5 mm (1.5 in) annular polymer diaphragm, neodymium compression driver
8 ohms
Symmetrical stage monitor, 15/18 mm, plywood.
Dual-angle (0° or -10°), 35 mm pole socket
Integrated handle / input cup
Finish:
Black DuraFlex™ finish
Grille:
Powder coated, black, 16 gauge perforated steel with acoustically transparent black screen backing.
Neutrik® Speakon® NL-4 (x2), one on each end
645 mm x 380 mm x 345 mm (25.25 in x 15.0 in x 13.5 in)
14.9 kg (33 lb)
SS2-BK: Tripod speaker stand
SS3-BK: Satellite speaker pole
MRX518S
MRX528S
MRX525
MRX515
MRX512M
Input Connectors:
Dimensions (H x W x D):
Net Weight:
The MRX500 speakers covered by this manual are not intended for fixed installation in outdoor or high moisture
environments. Moisture can damage the speaker cone and surround and cause corrosion of electrical contacts
and metal parts. Avoid exposing the speakers to direct moisture. Keep speakers out of extended or intense direct
sunlight. The driver suspension will prematurely dry out and finished surfaces may be degraded by long-term
exposure to intense ultra-violet (UV) light.
Optional Accessories:
1 IEC standard, full bandwidth pink noise with 6 dB crest factor for specified period
2 Calculated based on power rating and sensitivity
MRX500 speakers can generate considerable energy. When placed on a slippery surface such as polished wood
or linoleum, the speaker may move due to its acoustical energy output. Precautions should be taken to assure
that the speaker does not fall off a stage or table on which it is placed.
MRX515 - 15¨ two-way, bass-reflex
Frequency Range (-10 dB):
Frequency Response (±3 dB):
Coverage Pattern:
Crossover Mode:
Crossover Frequency:
Power Rating :
(Continuous / Program / Peak)
Maximum SPL²:
System Sensitivity (1w @ 1m):
LF Driver:
HF Driver:
Nominal Impedance:
Enclosure:
Suspension/Mounting:
Transport:
Finish:
52 Hz - 20 kHz
65 Hz - 20 kHz
70º x 70º nominal
Passive
Stand mounting safety precautions
Some MRX500 models include a 35 mm receptacle cup to allow mounting on tripod stands or on a pole over
subwoofers. When using stands or poles, be sure to observe the following precautions:
1.7 kHz
400 W / 800 W / 1600 W, 2 hrs1
Check the stand or pole specification to be certain the device is designed to support the weight of the
speaker. Observe all safety precautions specified by the manufacturer.
350 W / 700 W / 1400 W, 100 hrs1
124 dB SPL continuous (130 dB SPL peak)2
98 dB SPL
Always verify that the stand (or subwoofer / pole) is placed on a flat, level, and stable surface and be sure to
fully extend the legs of tripod type stands. Position the stand so that the legs do not present a trip hazard.
Route cables so that performers, production crew, and audience will not trip and topple the speakers over.
Inspect the stand (or pole and associated hardware) before each use and do not use equipment with worn,
damaged, or missing parts.
1 x JBL 265H 380 mm (15 in) Differential Drive® woofer
1 x JBL 2408H 37.5 mm (1.5 in) annular poltmer diaphragm, neodymium compression driver
8 ohms
Trapezoidal, 15/18 mm, plywood
Dual-angle (0° or -10°) 35 mm pole socket
2 x die-cast handles with backing cup
Black DuraFlex™ finish
Powder coated, black, 16-gauge perforated steel with acoustically transparent black screen backing.
Neutrik® Speakon® NL-4 (x2)
700 mm x 435 mm x 470 mm (27.25 in x 17.5 in x 18.5 in)
19.5 kg (43 lb)
SS2-BK: Tripod speaker stand
Do not attempt to place more than one MRX500 speaker on a stand or pole.
Always be cautious in windy, outdoor conditions. It may be necessary to place additional weight (i.e. sand
bags) on the base of the stand to improve stability. Avoid attaching banners or similar items to any part of a
speaker system. Such attachments could act as a sail and topple the system.
Grille:
Input Connectors:
Dimensions (H x W x D):
Net Weight:
Unless you are confident that you can handle the weight of the speaker, ask another person to help you get
it onto the tripod stand or pole.
Optional Accessories:
SS3-BK: Satellite speaker stand
Hearing damage, prolonged exposure to excessive SPL
1 IEC standard, full bandwidth pink noise with 6 dB crest factor for specified period
2 Calculated based on power rating and sensitivity.
MRX500 loudspeakers are easily capable of generating sound pressure levels (SPL) sufficient to cause perma-
nent hearing damage to performers, production crew and audience members. Caution should be taken to avoid
prolonged exposure to SPL in excess of 90 dB.
2
3
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SPECIFICATIONS
SPECIFICATIONS
MRX525 - Dual 15¨, two-way, bass-reflex
MRX518S - 18¨ bass-reflex subwoofer
Frequency Range (-10 dB):
Frequency Response (±3 dB):
Coverage Pattern:
Crossover Mode:
Crossover Frequency:
Power Rating:
(Continuous / Program / Peak)
Maximum SPL:
System Sensitivity (1w @ 1m):
LF Driver:
40 Hz - 20 kHz
57 Hz - 20 kHz
70º x 70º nominal
Passive
Frequency Range (-10 dB):
Frequency Response (±3 dB):
Input Connection Modes:
Recommended Crossover Frequencies:
Power Rating :
(Continuous / Program / Peak)
Maximum SPL:
System Sensitivity (1w @ 1m):
LF Driver:
40 Hz - 200 Hz
45 Hz - 200 Hz
Internally configurable, +1/-1, +2/-2
80-120 Hz, 24-48 dB/octave HPF
500 W / 1000 W / 2000 W, 2 hrs1
400 W / 800 W / 1600 W, 100 hrs1
127 dB SPL continuous (133 dB SPL peak)2
94 dB SPL, 100 dB SPL2
1 x JBL 2044G 457 mm (18 in) woofer
4 ohms
Top mounted 35 mm socket for optional SS3-BK pole
Rectangular, 18 mm, plywood
1.8 kHz
800 W / 1600 W / 3200 W, 2 hrs1
700 W / 1400 W / 2800 W, 100 hrs1
129 dB SPL continuous (135 dB SPL peak)2
100 dB SPL
2 x JBL 265H 380 mm (15 in) Differential Drive® woofers
Nominal Impedance:
Mounting:
Enclosure:
HF Driver:
Nominal Impedance:
Enclosure:
1 x JBL 2408H 37.5 mm (1.5 in) annular polymer diaphragm, neodymium compression driver
4 ohms
Trapezoidal, 15/18 mm, plywood
Finish:
Black DuraFlex™ finish
Transport:
Finish:
2 x die-cast handles with backing cup
Black DuraFlex™ finish
Grille:
Input Connectors:
Powder coated, black, 16 gauge perforated steel with acoustically transparent black screen backing.
Neutrik® Speakon® NL-4 (x2)
Grille:
Powder coated, black, 16-gauge perforated steel with acoustically transparent black screen
backing.
Dimensions (H x W x D):
Net Weight:
560 mm x 535 mm x 700 mm (22 in x 21 in x 27.5 in)
32.5 kg (72 lb)
Input Connectors:
Dimensions (H x W x D):
Net Weight:
Neutrik® Speakon® NL-4 (x2)
1240 mm x 535 mm x 460 mm; (48.75 in x 21.0 in x 18.0 in)
38.2 kg (84 lb)
Optional Accessories:
SS3-BK; Satellite speaker pole
1 40 Hz to 400 Hz pink noise with 6 dB crest factor for specified period
2 Calculated on half space condition
1 IEC standard, full bandwidth pink noise with 6 dB crest factor for specified period
2 Calculated based on power rating and sensitivity
MRX528S - Dual 18¨ bass-reflex subwoofer
Recommended Amplifier Power
Frequency Range (-10 dB):
Frequency Response (±3 dB):
Input Connection Modes:
Recommended Crossover Frequencies:
Power Rating:
(Continuous / Program / Peak)
Maximum SPL:
System Sensitivity (1w @ 1m):
LF Driver:
35 Hz - 250 Hz
40 Hz - 250 Hz
Recommended Amplifier
Infrasonic Filter
Settings
Power
Internally configurable, +1/-1 or +2/-2
80-120 Hz, 24-48 dB/octave
1000 W / 2000 W / 4000 W, 2 hrs1
800 W / 1600 W / 3200 W, 100 hrs1
133 dB SPL continuous (139 dB SPL peak)2
97 dB SPL; 103 dB SPL2
2 x JBL 2044H 457 mm (18 in) woofers
4 ohms
Rectangular, 18 mm, birch plywood
Black DuraFlex™ finish
Model
Full-Range / Parallel
HPF 24dB/octave
MRX512M
MRX515
800 to 1,600W@8Ω
800 to 1,600W@8Ω
1,600 to 3,200W@4Ω
1,000 to 2,000W@4Ω
2,000 to 4,000W@4Ω
63 Hz
50 Hz
40 Hz
31 Hz
31 Hz
MRX525
MRX518S
MRX528S
Nominal Impedance:
Enclosure:
Finish:
Grille:
Powder coated, black, 16 gauge perforated steel with acoustically transparent black screen
backing.
Infrasonic Filter Settings
Input Connectors:
Dimensions (H x W x D):
Net Weight:
Neutrik® Speakon® NL-4 (x2)
1095 mm x 535 mm x 700 mm (43 in x 21 in x 27.5 in)
55 kg (121 lb)
It is a good practice to use a High Pass Filter (HPF) to prevent frequencies below the system tuning fre-
quency from reaching the speaker. Inputting these frequencies to the speaker will not result in any appre-
ciable acoustic output but will put needless mechanical stress on the woofer and reduce available amplifier
headroom. A High Pass Filter will protect your MRX500 system from excess infrasonic energy with little, if
any loss of significant program content. Refer to the above chart for infrasonic filter settings.
1 40 Hz to 400 Hz pink noise with 6 dB crest factor for specified period
2 Calculated on half space condition
4
5
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MRX500 SERIES BLOCK DIAGRAMS
MRX512M
DuraFlex™ Finish
The DuraFlex finish used on your MRX500 series speakers is one of the most rugged finishes ever applied to a
speaker. However, all speaker finishes are subject to damage. Should the DuraFlex finish require repair, a touch-
up kit (Part Number 16677) is available from JBL Professional Parts.
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The dual angle pole socket on the MRX512M and MRX515 provides flexibility in aiming the speaker. As a gen-
eral rule, the speaker should be positioned so that the audience cannot see the top or bottom panels of the
speaker. When using stands or poles, be sure to observe the following precautions:
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• Check the stand or pole specification to be certain the device is designed to support the weight of the
speaker. Observe all safety precautions specified by the manufacturer.
• Be certain that the surface on which the system is to be stackedis flat, stable and solid.
• Route cables so that performers, production crew and audience will not trip and topple the speakers.
• Inspect the stand (or pole and assorted hardware) before each use and do not use equipment with
worn, damaged or missing parts.
• Always be cautious when deploying the system outdoors. Unexpected winds may topple a system. It
may be necessary to place additional weight (i.e. sandbags) on the base of the stand to improve
stability. Avoid attaching banners or similar items to any part of the speaker system. Such attachments
could act as a sail and topple the system.
• Unless you are confident that you can handle the weight of the speaker, ask another person to help
you get it onto the stand or pole.
MRX500
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MRX500 SERIES BLOCK DIAGRAMS
MRX500 SERIES BLOCK DIAGRAMS
MRX518S
MRX528S
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JBL PROFESSIONAL
Northridge, CA USA
Made in USA
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Serial No.
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LOW
FREQ 1
NL4 ±1
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MRX528S
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FREQ 1
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1-
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IN / THRU 4
NL4 ±2
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2-
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FREQ 2
2+
1+
1-
2-
MRX500
2+
2-
MRX500
MRX525
JBL PROFESSIONAL
Northridge, CA USA
Made in USA
Serial No.
-
1+
MRX525
HPF
HIGH
FREQ
1-
NL4
IN / THRU
+
+
2+
2-
IN / THRU
LOW
FREQ
-
PASSIVE
±1 IN: 4
±2 N/C
1+
1-
LPF
NL4
IN / THRU
2+
2-
LOW
FREQ
+
-
MRX500
8
9
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BASIC CONFIGURATION
SUB/SAT WIRING
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MRX500
10
11
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Speaker Cables
JBL LIMITED WARRANTY
The JBL Limited Warranty on professional loudspeaker products (except for enclosures) remains in effect for five
years from the date of the first consumer purchase. JBL amplifiers are warranted for three years from the date
of original purchase. Enclosures and all other JBL products are warranted for two years from the date of original
purchase.
Who Is Protected by This Warranty?
Your JBL Warranty protects the original owner and all subsequent owners so long as: A.) Your JBL product has
been purchased in the Continental United States, Hawaii or Alaska. (This Warranty does not apply to JBL prod-
ucts purchased elsewhere except for purchases by military outlets. Other purchasers should contact the local
JBL distributor for warranty information.); and B.) The original dated bill of sale is presented whenever warranty
service is required.
What does the JBL Warranty cover?
Except as specified below, your JBL Warranty covers all defects in material and workmanship. The following
are not covered: Damage caused by accident, misuse, abuse, product modification or neglect; damage occur-
ring during shipment; damage resulting from failure to follow instructions contained in your Instruction Manual;
damage resulting from the performance of repairs by someone not authorized by JBL; claims based upon any
misrepresentations by the seller; any JBL product on which the serial number has been defaced, modified or
removed.
Who Pays for What?
JBL will pay all labor and material expenses for all repairs covered by this warranty. Please be sure to save the
original shipping cartons because a charge will be made if replacement cartons are requested. Payment of ship-
ping charges is discussed in the next section of this warranty.
How to Obtain Warranty Performance
If your JBL product ever needs service, write or telephone us at JBL Incorporated (Attn: Customer Service
Department), 8500 Balboa Boulevard, PO. Box 2200, Northridge, California 91329 (818/893-8411). We may
direct you to an authorized JBL Service Agency or ask you to send your unit to the factory for repair. Either way,
you'll need to present the original bill of sale to establish the date of purchase. Please do not ship your JBL
product to the factory without prior authorization. If transportation of your JBL product presents any unusual dif-
ficulties, please advise us and we may make special arrangements with you. Otherwise, you are responsible
for transporting your product for repair or arranging for its transportation and for payment of any initial shipping
charges. However, we will pay the return shipping charges if repairs are covered by the warranty.
Minimum Wire Size for 0.5 dB Loss
Limitation of Implied Warranties
ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE LENGTH OF THIS WARRANTY.
EXCLUSION OF CERTAIN DAMAGES
JBL'S LIABILITY IS LIMITED TO THE REPAIR OR REPLACEMENT, AT OUR OPTION, OF ANY DEFECTIVE
PRODUCT AND SHALL NOT INCLUDE INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND. SOME
STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS AND/OR DO NOT
ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS
AND EXCLUSIONS MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS,
AND YOU MAY ALSO HAVE OTHER RIGHTS, WHICH VARY, FROM STATE TO STATE.
12
13
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JBL PROFESSIONAL CONTACTS
Notes
Mailing Address:
Outside the USA:
JBL Professional
Contact the JBL Professional Distributor in your area. A
8500 Balboa Blvd.
Northridge, CA 91329
complete list of JBL Professional international distributors is
Shipping Address:
Product Registration:
JBL Professional
8370 Balboa Blvd., Dock D
Northridge, CA 91329
(Do not return product to this address without
first obtaining prior authorization from JBL)
Customer Service:
Monday through Friday
8:00am - 5:00pm
Pacific Coast Time In the U.S.A.
(800) 8JBLPRO (800.852.5776)
On the World Wide Web:
14
15
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Notes
Notes
16
17
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