Nexo MSUB18 Series User manual

DP2820-01-DI
MSUB18-I
User Manual

TABLE OF CONTENTS
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TABLE OF CONTENTS
TABLE OF CONTENTS___________________________________________________________________ 2
WARNINGS ____________________________________________________________________________ 3
DESCRIPTION__________________________________________________________________________ 4
SETTING RANGE _______________________________________________________________________ 6
MSUB18 RIGGING _____________________________________________________________________ 10
MSUB18 - ACCESSORIES _______________________________________________________________ 11
ARRAY EQ____________________________________________________________________________ 13
MAINTENANCE________________________________________________________________________ 14
TECHNICAL SPECIFICATIONS ___________________________________________________________ 16
USER NOTES _________________________________________________________________________ 17
EU Conformity declaration
We,
NEXO SA
ZA DU PRE DE LA DAME JEANNE
60128 PLAILLY –France
Declare under our sole responsibility that the product
Type
Serial number
Loudspeaker
MSUB18
On the product
Is in conformity with the provisions of the following directive
including all applicable amendments:
2014/35/UE (Low Voltage Directive)
Applied rules and standards:
Plailly, January, 2019
EN 13155, EN 62368
Joseph CARCOPINO, R&D Director

WARNINGS
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WARNINGS
PRECAUTIONS
Do not open the speaker, do not try to disassemble it neither to modify it in any way. The system doesn’t include any user-
repairable part.
If the system seems to be malfunctioning or damaged, stop using it at once and have it repaired by a NEXO qualified technician.
Do not expose the system directly to the sun or to the rain, do not immerse it into fluids, do not place objects filled with liquid on the
system. If a liquid gets into the system, please have it inspected by a NEXO qualified technician.
The connection should be performed by qualified technician, by ensuring that power is off.
Operating temperature with temperate climate: 0°C to +40°C (+32°F to +104); -20°C à +60°C (-4°F to +140°F) for storage.
SAFETY INFORMATIONS
Read this manual before using the speaker.
Keep this manual available for further reference.
Observe all warnings and cautions.
Please check the NEXO Web site nexo-sa.com to get the most up-to-date version of this manual.
Ensure you are aware of the safety rules applying to rigging, stacking or installing on tripod or speaker stand. Failure to observe
these rules may expose persons to potential wounds or even death.
Only use the system with accessories specified by NEXO.
Please always consult a NEXO-accredited technician if the installation needs architectural works and observe following precautions:
Mounting Precautions:
- Please select screws and mounting location supporting 4 times the system weight.
- Do not expose the system to excessive dust, vibrations, to extreme cold or hot temperatures, to reduce the risk of
damaging components.
- Do not place the system in an unstable position: it could fall accidentally.
- If the system is used on a tripod, please ensure the tripod’s specifications are adapted and that it’s height does not exceed
1.40m/55”. Do not move the tripod with the system in position.
Connection and Powering Precautions:
- Unplug connected cables before moving the system.
- Power off the system before connecting the system.
- When switching on the installation, the amplifier must be powered last; when switching the installation off, shut off the
amplifier first.
- If you work by cold temperatures, progressively raise the level to nominal value during the first minutes of use, to allow the
system components to stabilize.
Please check regularly the system condition.
HIGH ACOUSTIC PRESSURE LEVELS
Exposure to very high sound pressure levels may cause permanent hearing losses. Degrees of hearing losses may be different
from one person to another, but almost everybody will be affected if exposed to high sound pressure levels during a long period of
time. The OSHA (Occupational Safety and Health Administration) American Agency specified the following maximal exposures:
Number of Hours
Sound Pressure Level (dBA),
Slow Response
8
90
6
92
4
95
3
97
2
100
1 ½
102
1
105
½
110
¼ or less
115
WASTE OF ELECTRIC OR ELECTRONIC EQUIPMENT
This symbol on the product or its packaging indicates that this product must not be treated as household waste.
Instead, it is your responsibility to hand it over to a designated collection point for the recycling of waste
electrical and electronic equipment. By ensuring your waste equipment is recycled, you will help prevent
potential negative consequences for the environment and human health, which could appear if this product was
not recycled. Recycling helps spare natural resources. For more information about the recycling of this product,
please contact your local city office, your household waste disposal service or your reseller.

DESCRIPTION
Page 4 / 20 MSUB18-I
DESCRIPTION
The MSUB18-I is a compact high technology arrayable sub, the ideal companion for the GEOM10 line array element, sharing
same aesthetic design and arrayable in the same flown or stacked cluster.
Versions:
•MSUB18-I: for fix applications; Black
•MSUB18-PW: for fix applications; White
Connectors:
•2 fast connectors in front and back. Seal your connections for an outdoor use (with the kit provided)
•(+): Red / (-): Black
MSUB18-I Sealing:
You can find 2 locations to wire MSUB18-I.
Choose how you wire the MSUB18-I and apply the followings
procedures.
Unused side:
Put the heat-shrink cap on the cable. Use a hot air to shrink it down.

DESCRIPTION
MSUB18-I Page 5 / 20
Used side:
Pop the lever open.
(+) : Brown (or Red)
(-) : Blue (or Black)
Push your wire in (strip about 10 mm) and
clamp the lever closed again.
Repeat for the second connector.
Place the heat-shrinkable tubing on the
connector.
Use a hot air to shrink down the sheath.
Bend the sheath and hold it with a clamp.
Repeat for the second connector.
Attach them together to the rigging part.
Sheaths upwards.
Guide the cable through the entry (up
and/or down).
Amplification:
•The MSUB18 must be used with a NEXO processor to handle EQ, phase alignment, crossover and
excursion/thermal protection for the system loudspeakers.
•The following table shows the number of MSUB18 subwoofers usable with each solution.
NXAMP4x1MK2 (bridged)
NXAMP4x2MK2
NXAMP4x4
MSUB18
1 per channel
1 per channel
Up to 2 per channel
Recommended

SETTING RANGE
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SETTING RANGE
Please consult nexo-sa.com for NEXO TD Controllers firmware information.
There are two setting ranges for surrounding speaker MSUB18:
« OMNI » setups; For a traditional use of the subwoofer in omnidirectional radiation (require at least one subwoofer and a
channel of amplifier).
•Omnidirectional Main setup, with low-pass at 50, 60, 75, 85, 95 or 120 Hz.
•Omnidirectional Monitor setup, with low-pass at 60, 75 or 85 Hz.
« CARDIO » setups; For a directional use (cardioid) of subwoofers (require at least two subwoofers and two channels of
amplifier):
•Cardioid back and front setups, with low-pass at 65, 75, 85, 95 or 120 Hz.
- Setup « FR » (Front) for the subwoofer pointed at the audience.
- Setup « BA » (Back) for the subwoofer turned around.
•The ideal ratio for a directional use is 2 x MSUB18 in CARDIO FRONT mode on top of 1x Reversed MSUB18 in
CARDIO BACK mode. From 1:1 to 4:1 ratio can be used
OMNI Assembly
CARDIO Assembly

SETTING RANGE
MSUB18-I Page 7 / 20
With 1 to 3 GEOM12
Box
For these configurations, crossover frequency 85 Hz is recommended (85 Hz also for GEOM12).
For stack configuration using MSUB18 in OMNI or CARDIO mode with 1 Back and 2 Front ang GEOM12
on top of them, crossover 85 Hz is recommended (85 Hz also for GEOM12). A small overlap could have
impact if needed, for example (MSUB18 120 Hz and GEOM12 75 Hz).

SETTING RANGE
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With 4 to 6 GEOM12
For long throw application, crossover 95 Hz is recommended (OMNI mode).
For long throw stacking application, up to 6 GEOM12, crossover 85 Hz is recommended on MSUB18
(also for GEOM12).

SETTING RANGE
MSUB18-I Page 9 / 20
With 7 to 12 GEOM12
For very long throw application, with flown or stacked MSUB18, recommended MSUB18 cardioid mode,
crossover MSUB18 95 Hz and 12 GEOM12 crossover 75 Hz for the maximum impact.
Ground Stack Sub design

MSUB18 RIGGING
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MSUB18 RIGGING
Open the 4 bumpers (Tx30)
Insert the axis, positionning the pin and secure by bending the
legs.

MSUB18 - ACCESSORIES
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MSUB18 -ACCESSORIES
WARNINGS
All MSUB18 accessories are specifically rated in agreement with structural computations.
Never use other accessories –including push-pins –when assembling MSUB18 cabinets than the ones provided by NEXO:
NEXO will decline responsibility over the entire MSUB18 accessory range if any component is purchased from different
supplier.
All MSUB18 accessories have been designed so that cabinet are arrayed vertically.
VNI-BUMPM12 / VNT-BUMPM12
Rated for a maximum of 12 GEOM12 or 8 MSUB18, or a
combination with a maximum of 4 MSUB18 and 6 GEOM12.
Flown on 2 rigging points with retractable rings.
Usable with VNT-EXBARM12 for extra tilt angle and flown on
one or two rigging points.
Ground stack assembly alone, or with VNT-GSTKM10M12S /
VNT-GSTKM10M12L for adding stability.
2 locations for laser/clinometer (VNT-BUMPM12 only).
NO TILT –MSUB18 MUST ALWAYS BE POSITIONNED STRAIGHT AND ON THE TOP THE ARRAY
VNT-EXBARM12
Negative Tilt
Positive Tilt

MSUB18 - ACCESSORIES
Page 12 / 20 MSUB18-I
VNT-GSTKM10M12S –VNT-GSTKM10M12L
VNT-MNSTKM12
Rated for a maximum of 3 GEOM12 on the top of MSUB18.

ARRAY EQ
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ARRAY EQ
The ArrayEQ allows to adjust the system frequency response in its lower range (see curves below, with different
ArrayEq values):

MAINTENANCE
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MAINTENANCE
Grille changing
Remove 8 screws (Tx30) and the bumper.
Remove 12 screws (TX25) on the side, top and below to remove
the grille.
18’’Driver’
Remove 8 screws (Tx25) to remove the driver.
If you remove the side rigging and untighten the cable gland,
you have 2 windows to access 2 screws (not mandatory).
To remove the driver, pull and swing it towards you.
Red (+) / Black (-)

MAINTENANCE
MSUB18-I Page 15 / 20
Spare parts
10
MARK
QUANTITY
REFERENCE
DESIGNATION
1
4
05PC60
Hoosing Feet 60
2
1
05DOUILM20
Connector Plate M20 (with screws)
1
05DOUILM20W
Connector Plate M20 White (with screws)
3
1
05LEXSUB18I
Lexan MSUB18-I
1
05LEXSUB18-IPW
Lexan MSUB18-I white
4
4
05PT60
Feet 60 (with screw)
5
1
05MSUB18-UAI
Complete grille Installation Black (with fasteners)
1
05MSUB18-UAIPW
Complete grille Installation White (with fasteners)
6
1
05HP18SW-4
18’’ Driver (with screws)
1
05HP18SW-4-RK
Recone kit HP18SW-4 (with screws)
7
4
05VAX8-30-18.5
Clevis axis 8x30x18.5 + Split Pin Ø3.2x20 (x4)
8
4
05VGOUF3.2X20
Split Pin Ø3.2x20 (x10)
9
2
05CNX222-413
Wago 3Pt
10
1
05MSUB18KIT
MSUB18-I IP54KIT

TECHNICAL SPECIFICATIONS
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TECHNICAL SPECIFICATIONS
MSUB18 WITH NEXO ELECTRONICS
Frequency range (±6dB)
32Hz –120Hz
Sensibility (1W / 1m)
107dB SPL Nominal
Peak SPL Level (1m)
139dB
Operating voltage
80 Vrms (180 Vpeak)
Crossover Frequency
32-65; 32-75; 32-85; 32-95; 32-120 Hz
Nominal Impedance
4Ω
Recommended Amplification
2000 W per cabinet
SPECIFICATIONS
Model
MSUB18-I
Components
1x 18 ‘’ –4 Ohms –Long excursion –Neodymium driver
Material
Baltic birch plywood
Finish
Black or white structural paint
Front finish
Steel front grille –Back mesh
Fittings
8x Side handles
Connectors
2x Cable gland with 2 cores cables
Weight
55 kg –122 lb
Dimensions

USER NOTES
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USER NOTES

USER NOTES
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USER NOTES
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USER NOTES
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NEXO S.A.
Parc d’activité de la Dame Jeanne
F-60128 PLAILLY
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
nexo-sa.com