Beta Three MU series User manual

MU18B
18" subwoofer
UM- MU1 8 B - 2 0 0 9 0 9 2 8 v e r A
User Manual
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 instructions .
Do not install this product near any heat source, such as , heater, burner, or any other equipment with heat radiation .
Only use spare parts 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 READTHIS 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:
Thisproduct mustbeinstalled byprofessionals.Whenusing hangingbracketsorrigging otherthanthosesuppliedwith
theproduct,pleaseensurethey complywiththelocalsafety codes.
Theexclamationpoint withinanequilateraltriangleis intended toalertyoutothe presenceof important
operatingand servicinginstructions.
ATTENTION:Don'trefitthesystemorsparepartswithoutbeingauthorizedasthiswill .voidthewarranty
WARNING: Don't (suchas candles) theequipment.placenakedflames closeto

MU18B
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CONTENT
Features
Description
Applications
Frequency Response And Impedance Curve
CONTENT
CONNECTION
Terminal Plate
NL4 Connection
INSTALLATION
Installation 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
Frequency Response And Impedance Curve
2D Dimension
TECHNICAL SPECIFICATION
MU Series Pro Loudspeaker System

MU18B
3
MU18B
INTODUCTION
Feature
Description Application
Single 18" phase inverted subwoofer.
Sensitivity is 97dB, Max. SPL is 124dB.
Rated power is 500W, peak power is 2000W.
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.
18" subwoofer
β3 MU18B is a subwoofer adoping new structure and new
painting technology in MU family. It integrates a 18" /8ohm
woofer with 100mm voice coil.The rated power is 500W,
peak power is 2000W. Symmetrical magnet circuit design
reduce the impar HD effectively and enhance the LF sound
quality. .
Cabinet is made of 18mm 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.
The special feet in the bottom can assure the stable working.
MU18B is mainly designed for the applications in conference
room,multifunctional hall, small auditorium, church,
living performance.
Conference Room
Medium And Small Auditorium
Multifunctional Hall
Church
Medium And Small Living Performance
MU Series Pro Loudspeaker System

CHA
BRIDGE IN
CHB
SIGNAL GND
SIGNAL +
SIGNAL -
BRIDGE
PARALLEL
STEREO ON
OFF
50HZ
25HZ
ON
OFF
CHB OUTPUT
CHA OUTPUT
POWER
CABLE
FUSE
-
B
+
-
A
+
-
+
5HZ
CAUTION
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
CLIPLIMITER
INPUT
PIN1:
PIN2:
PIN3:
MU18B
1
2
1
2
3
4
MU18B
MU18B
INPUT
OUTPUT
No.:
ELDER AUDIO MANUFACTURE CO., LTD
1+ 1- : INPUT
1+
2+
1-
2-
MU18B
Warranty does not
cover damage caused
by incorrect installation,
operation or overload.
SENSITIVITY(1W/1m)
IMPEDANCE
NETWEIGHT
97dB
8Ω
38kg
POWER(RMS)
FREQUENCY 40Hz-300Hz
500W
1+
1- +
-
LOW
1+ 1- INPUT
Terminal Plate
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.
NL4 Connection
Two NL4 connectors are available for amplifier connections. Paralelled connector is very convenient for another speaker
connection.
MU Series Pro Loudspeaker System

1+
1- 2+
2-
1+
1- 2+
2-
1+
1- 2+
2-
0.50.751.01.52.54.0
2 Ohm
4 Ohm
8 Ohm
0
15
30
46
61
76
0
50
100
150
200
250
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MU18B
CONNECTION
（Meters）Wire length
（Feet）Wire length
1. Banana plugs to NL4
SpeakerWiring
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

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MU18B
MU12/MU15
MU18B
Warning:
safety factor not less than 5:1 or meet the local
standard during installation .
Make sure the mounting accessories
INSTALLATION
Mounting Accessories Installation Reference
The support flange in the top of MU18B is for the pole
mounting application with MU12/MU15. 1. Stack
MU Series Pro Loudspeaker System

40Hz-300Hz
500W (RMS)
1000W (MUSIC)
2000W (PEAK )
Woofer :
600 x 640 x 550mm
(23.6 x 25.2 x 21.7in)
124dB/130dB(PEAK)
35Hz-600Hz
1 x 18"Woofer
18mm birch plywood
Fixed supporting base
Nl4 x 2
Cabinet coated by Polyurethane paint; grille
is powder coated
38kg(83.6lb)
44kg(96.8lb)
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750 x 710 x 670mm
(29.5 x 28.0 x 26.4in)
200001000010001005020
50
35
10
7
70
80
90
100
110
Sensitivity (dB)
Impedance (Ohms)
MU18B
Optional mounting accessories:
60
Frequency (Hz)
7
SpeakerTesting Method
1. Frequency response
Use Pink noise to test the speaker in the anechoic room,
adjust the level to make the speaker work at its rated
impedance and the power output is 1W, then test the
frequency response 1m away from the speaker.
2. Sensitivity
Use full range Pink noise which was modified by EQ curve
to test the speaker in the anechoic room, enlarge the signal
to make the speaker work at its rated impedance and the
power output is 1W, then test the sensitivity 1m away from
the speaker.
3. MAX.SPL
Use full range Pink noise which was modified by EQ curve
to test the speaker in the anechoic room, enlarge the signal
to make the speaker work at its instant power output level,
then test the SPL 1m away from the speaker.
4. Rated Power
Use the pink noise according to IEC#268-5 to test the speaker,
enlarge the signal for continuous 100hours, the rated Power
is the power when the speaker will not incur hot damage or
mechanics damage.
Specification
Frequency response curve
Impedance curve
Frequency response curve & Impedance curve
TECHNICAL SPECIFICATION
Mounting accessories:
Sensitivity(1W@1m):
Power:
N.W.(pc):
System:
Frequency response(-3dB):
Frequency response(-10dB):
Max.SPL(1m):
Rated impedance:
Cabinet:
Handle:
Painting:
Connector:
G.W.(pc):
Cabinet dimension:
(W D H)× ×
Package dimension:
(W D H)× ×
Passive low-frequency speaker
Speaker stand
MU Series Pro Loudspeaker System
97dB
8 ohm

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MU18B
550mm
[21.65in]
600mm
[23.62in]
640mm
[25.20in]
Top view
Front view
Side view Back view
Bottom view
2D Dimension
TECHNICAL SPECIFICATION
MU Series Pro Loudspeaker System

Notes:

www.beta3pro.com