Beta Three MU15 is a versatile speaker system designed for a wide range of applications, from live music performances to public address systems. With its 15" woofer and 3" compression driver, it delivers clear and powerful audio with a frequency response from 45Hz to 17kHz. The built-in crossover ensures optimal sound quality, while the robust cabinet and standard flying mounting system make it easy to install and transport.
Beta Three MU15 is a versatile speaker system designed for a wide range of applications, from live music performances to public address systems. With its 15" woofer and 3" compression driver, it delivers clear and powerful audio with a frequency response from 45Hz to 17kHz. The built-in crossover ensures optimal sound quality, while the robust cabinet and standard flying mounting system make it easy to install and transport.
MU15
UM- MU15- 20090827 ver A
User Manual
15" two way full range
speaker with built-in crossover
MU Series Pro Loudspeaker System
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Read the instruction first before using this product.
Pay attention to all warnings.
Obey all operating instructions.
Do not expose this product to rain or moisture.
Do not block any ventilation openings. Install according to inst ructions .
Do not install this product near any heat source, such as , heater, burner, or any other equipment with heat radiation .
Only use spare part s by manufacturer.
Pay attention to the safety symbol on the of the cover.
manual
Please keep this manual for future reference
Clean this equipment with a dry cloth.
manufacturer's
a
supplied the
outside
SAFETY INSTRUCTIONS
PLEASE READ THIS MANUAL FIRST
Thank you for a buying product. Read this manual first as it will help you operate the system properly. Please keep this manual
for future reference.
WARNING:
This product must be installed by professionals. When using hanging brackets or rigging other than those supplied with
the product, please ensure they comply with the local safety codes.
The exclamation point within an equilateral triangle is intended to alert you to the presence of important
operating and servicing instructions.
ATTENTION: Don't refit the system or spare parts without being authorized as this will .void the warranty
WARNING: Don't (such as candles) the equipment.place naked flames close to
MU15
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CONTENT
Features
Description
Applications
Frequency Response And Impedance Curve
CONTENT
CONNECTION
Terminal Plate
NL4 Connection
INSTALLATION
Mounting Accessories
Installation Reference
Product information subjects to be updated without
notification, please visit www.elderaudio.com for
latest update.
INTRODUCTION
System Connection Reference
Loudspeaker Connection
Technical Sheet
2D Dim ension
TECHNICAL SPECIFICATION
MU Series Pro Loudspeaker System
MU15
MU15
MU Series Pro Loudspeaker System
INTODUCTION
Features
Description Applications
Two way full range phase inverted speaker with 15"
woofer and 3" compression driver.
00
Dispersion 60 x40 , the controlled frequency reach to 1kHz.
Advanced free protection design assure the reliability
of tweeter.
Sensitivity 98dB, Max.SPL 124dB.
Rated power 360W, peak power 1440W.
Standard flying mounting system.
The necessary flying mounting accessories will be
attached, the Max. installation weight reach to 385Kg
to make the safety of speaker.
Powder coated grille can be used outdoors for 5 years.
The foam backside of the grille can prevent the rain.
The new paint materials and advanced painting
technology make the surface very rigid.
15" two way full range speaker with built-in crossover
3 MU15 is a two w ay full range speaker adopting the new
structure and new painting technology. It integrates one 15"
Neodymium woofer with 75MM voice coil and one 3"
compression driver . The rated power is 360W, the peak pow er
is 1440W. Symmetrical magnet circuit design reduce the impar
HD effectively and enhance the LF sound quality.
Neodymium transducers reduce 15% weight.
Cabinet is made of 15mm birch plywood with advanced
environmental protection Polyurethane-based painting which
is very rigid. The cabinet strength reach to 4500N. Q235 grille is
coated by powder to provide strong ultra-Weatherability, can
be used outdoors for 5 years. The backside foam of grille can
prevent the rain.
MU15 adopts the protection free design, which reduce the
interfere and enhance the sound quality.
A lot of new materials were used on MU15, for example, the
diaphragm is made from m agnalium to meet the sound
requirement.
MU15 is mainly designed for conference room, multifunctional
hall, auditorium, church, living performance.
Multifunctional hall
Small Auditorium
Church
Conference room
Small performance
3
CHA
BRIDGE IN
CHB
SIGNAL GND
SIGNAL +
SIGNAL -
BRIDGE
PARALLEL
STEREO ON
OFF
50 HZ
25 HZ
ON
OFF
CHB OUTPUT
CHA OUTPUT
POWER
CA BLE
FUSE
-
B
+
-
A
+
-
+
5HZ
CA UTION
BRIDGE
OUTPUT ASSIGNMENT:
BRIDGE MONO OUTPUT:
CHA :
PIN1+ : SIGNAL GND
CHA:
PIN 1+ :
PIN 1 - :
PIN 2+ :
PIN 2 - :
CHA SIGNAL
CHA GND
CHB SIGNAL
CHB GND
CHB: PIN 1+ :
PIN 1 - :
PIN 2+ :
PIN 2 - :
CHB SIGNAL
CHB GND
PIN2+ :
!
Serial no:
Special design for big power
RISK OF ELECTRIC SHOCK
DO NOT OPEN
MODE LF FILTER GROUND
CLIPLIM ITER
INPUT
PIN1:
PIN2 :
PIN3 :
MU15
1
2
1
2
3
4
MU15
MU15
INPUT
OUTPUT
No.:
ELDER AUDIO MANUFACTURE CO., LTD
1+ 1- : INPUT
1+
2+
1-
2-
MU15
Warranty does not
cover damage caused
by incorrect inst allation,
op eration or overload.
SENSITIVITY(1W/1m)
IMPEDANCE
NET WEIGHT
98dB
8
28kg
POWER(RMS)
FREQUENCY 45Hz-17 kHz
360W
1+
1-
+
-
+
-
LOW
HIGH
1+ 1- INPUT
Terminal Plate
CONNECTION
Two NL4 connectors are available for amplifier connection. Paralelled connector is very convenient for another speaker
connection.
1. Connect 2. Disconnect
System Connection Reference
Attention: The impedance of connected speaker must match the impedance of amplifier output.
Attention: Make sure the polarity of speaker and amplifier correctly.
Crossover
NL4 Connection
MU Series Pro Loudspeaker System
1+
1-
2+
2-
1+
1-
2+
2-
1+
1-
2+
2-
0.5 0.75 1.0 1.5 2.5 4.0
2 Ohm
4 Ohm
8 Ohm
0
15
30
46
61
76
0
50
100
150
200
250
5
MU15
CONNECTION
Wire length Meters
Wire length Feet
1. Banana plugs to NL4
Speaker Wiring
2. NL4 to NL4
3. Consumption curve of connection cable(Only for reference, the result is different if adopting the different cables)
Connect to amplifier Connect to speaker
Connect to amplifier Connect to speaker
2
Wire diameter mm
MU Series Pro Loudspeaker System
6
MU15
SPS-502BC black
Warning: Make sure the mounting accessories
safety factor not less than 5:1 or meet the local
standard during installation .
INSTALLATION
Installation Reference
Mounting Accessories
The standard flying mounting hardware is very convenient
for different installations and applications.
1. Speaker stand
2. Standard flying mounting ring
1. Vertical flying mounting installation
2. Horizontal flying mounting installation
MU Series Pro Loudspeaker System
13"com pression driver
45Hz-17kHz
98dB
360W
720W
144 0W
(RMS)
(MUSIC)
(PEAK)
8 Ohm s
60 40
Tweeter:
NL4 2
485 485 720mm
(19.1 19.1 28.4in)
Max. SPL(1m): 124dB/ 130dB(PEAK)
35Hz-20kHz
1 15"Neodym ium woofer
Woofer:
1.7kHz
28.0kg(61.6 lb)
32.5kg(71.5 lb)
Passive full range wooden
speaker with painting
1
2
3
4
595 595 840mm
(23.4 23.4 33.1in)
200001000010001005020
100
50
10
5
70
80
90
100
110
Sensitivity (dB)
Impedance (Ohms)
7
MU15
60
Frequency (Hz)
Frequency response curve
Impedance curve
Frequency response curve & Impedance curve
TECHNICAL SPECIFICATION
2 Wooden handle
Wedge shape
Sensitivity(1W@1m):
Pow er:
Dispersion HV:
System:
Frequency response(-3dB):
Frequency response(-10dB):
Rated impedance:
Crossover point:
Cabinet:
Handle:
Connector:
Cabinet dimension:
(WDH)
Package dimension:
(WDH)
Technical Specification
Mounting accessories: Standard flying m ounting hardware
Painting: Cabinet coated by Polyurethane paint;
grille is pow der coated
Net weight(pc):
Gross weight(pc):
Optional mounting accessories:
Flying m ounting ring, speaker stand
MU Series Pro Loudspeaker System
Speaker Testing Method
1. Frequency Response
Use Pink noise to test the speaker in the anechoic chamber,
adjust the level to make the speaker work at its rated impedance
and set the output power at 1W, then test the frequency response
1m away from the speaker.
2. Sensitivity
Use full range Pink noise which has been modified using
an EQ curve to test the speaker in the anechoic chamber,
increasing the signal to make the speaker work at its rated
impedance and set the power output at 1W, then test the
sensitivity 1m away from the speaker.
3. MAX.SPL
Use full range Pink noise which has been modified using
an EQ curve to test the speaker in the anechoic chamber ,
increase the signal to make the speaker work at its
maximum pow er output level, then test the SPL1m away
from the speaker.
4. Rated Power
Use Pink noise to the IEC#268-5 standard to test the speaker,
increase the signal for a continuous period of100 hours,
the rated power is the power when the speaker will show
no visible or measurable damage.
8
MU15
720mm
[28.35in]
485mm
[19.09in]
485mm
[19.09in]
Top view
Front view
Side view Back view
Bottom view
2D Dimension
TECHNICAL SPECIFICATION
MU Series Pro Loudspeaker System
Notes:
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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Beta Three MU15 is a versatile speaker system designed for a wide range of applications, from live music performances to public address systems. With its 15" woofer and 3" compression driver, it delivers clear and powerful audio with a frequency response from 45Hz to 17kHz. The built-in crossover ensures optimal sound quality, while the robust cabinet and standard flying mounting system make it easy to install and transport.
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