NEXO L18 Passive Subwoofer User Manual

NEXO L18 Passive Subwoofer

Specifications

• Product Model: L18
• Serial Number: DP4535-02c-DI
• Compliance: EU Conformity declaration with directive 2014/35/UE (Low Voltage Directive)
• Applied Rules and Standards: EN12100, EN 13155, EN 62368
• Amplification Compatibility: DTD + DTDAMP4X1.3 NXAMP4X1mk2
• Connectors: Two Speakon NL4 connectors

Product Usage Instructions

Warnings and Precautions

• Select screws and mounting location supporting 4 times the system weight.
• Avoid exposure to excessive dust, vibrations, and extreme temperatures.
• Avoid placing the system in an unstable position.
• Follow connection and powering precautions.
• Regularly check the system condition.
• Avoid exposure to high sound pressure levels to prevent hearing loss.

Equipment Assembly

1. Use the 3 hanging locations – 1 on top for a speaker stand and 2 on the sides.
2. For the distance rod or speaker stand assembly, place the distance rod on the Sub’s connector plate (M20) and the main cabinet on the distance rod/monitor stand.
3. Ensure the speaker stand is rated for the main cabinet’s weight and installed on a horizontal surface.
4. Test assembly steadiness by pushing in all directions.

Product Description

The L18 is a compact and powerful subwoofer designed to complement PLUS series speakers. It is equipped with two Speakon NL4 connectors with parallel-wired pins. The L18 utilizes the 1+/1- pins (2+/2- through).

Amplification Compatibility

Frequently Asked Questions (FAQ):

Q: How do I ensure the stability of the assembly?

• A: Test the steadiness of the assembly by pushing it in all directions after ensuring that the speaker stand is rated for the weight of the main cabinet and is installed on a horizontal surface.

Q: What precautions should I take when connecting or moving the system?

• A: Unplug connected cables before moving the system and power off before connecting.
• When switching on/off, manage the amplifier power accordingly.
• Also, if operating in cold temperatures, gradually raise the level during initial use to allow system components to stabilize.

Q: What are the recommended exposure limits to sound pressure levels?

• A: Avoid exposure to high sound pressure levels to prevent hearing loss. Follow OSHA guidelines for maximal exposures based on sound pressure levels and duration of exposure.

EU Conformity declaration

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 parts.
• 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 in fluids, and 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.
• When flying outdoor systems ensure that the system is not exposed to excessive wind or snow loads and is protected from rainfall.
• In case of wind greater than 8 on the Beaufort scale (72km/h – 45mph), a touring system has to be landed or an additional securing has to be implanted.
• For fixed installations, wind loading has to be taken into account in accordance to the national standards
• The connection should be performed by a qualified technician, by ensuring that the 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 INFORMATION

• 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 a 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 work and observe the following precautions:

Mounting Precautions:

• Please select screws and mounting locations 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 its 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 SOUND PRESSURE LEVELS

• Exposure to very high sound pressure levels may cause permanent hearing loss. Degrees of hearing loss may be different from one person to another, but almost everybody will be affected if exposed to high sound pressure levels for a long time.
• The OSHA (Occupational Safety and Health Administration) American Agency specified the following maximal exposures:

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.

EQUIPMENT

3 locations for hanging, 1 on the top for the speaker stand, and one on both sides

Assembly on distance rod or speaker stand

**** Place the distance rod on the connector plate (M20) of the Sub.

Place the main cabinet on the distance rod / monitor stand (diameter of 35mm),

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**IMPORTANT**

**** The speaker stand must be rated for the weight of the main cabinet. The speaker stand must always be installed on a horizontal surface.

Stand height and footprint must be defined to prevent the assembly from collapsing.

Ensure that the audience is not allowed within a safety area whose radius is equal to or higher than the assembly height.

Test the steadiness of the assembly by pushing in all directions.

DESCRIPTION

• The L18 is a compact and powerful subwoofer, ideally complementing PLUS serie speakers
• The L18 subwoofer is equipped with two Speakon NL4 connectors, with parallel-wired pins,
• L18 uses the 1+/1- pins, (2+/2- through).

Amplification

• The L18 subwoofer must be used with a NEXO processor to handle EQ, phase alignment, crossover, and excursion/thermal protection for the system loudspeaker.
• The following table shows the number of L18 subwoofers usable with each solution.

|       DTD + DTDAMP4X1.3| NXAMP4X1mk2 **| NXAMP4X2mk2 **| NXAMP4X4mk2 **
---|---|---|---|---
P8| Up to 2 per channel| Up to 2 per channel| Up to 4 per channel| Up to 4 per channel
P10| Up to 2 per channel| 1 per channel| Up to 4 per channel| Up to 4 per channel
P12| | Up to 2 per channel (a)| Up to 2 per channel| Up to 4 per channel
P15| | Up to 2 per channel (a)| Up to 2 per channel| Up to 4 per channel
P18| | 1 per channel (a)| 1 par canal| Up to 2 per channel
L18| **| 1 per channel (a)| 1 per channel| Up to 2 per channel

(a) NXAMP4X1mk2 (BRIDGED)

PRESET

Please consult nexo-sa.com for NEXO TD Controllers firmware information.

There are two setting ranges for surrounding speaker L18:

• 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 60, 85, or 120 Hz.
• Omnidirectional Monitor setup, with low-pass at 60, 85, or 120 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 60, 85, 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 directional use is 2x L18 in CARDIO FRONT mode on top of 1x Reversed L18 in CARDIO BACK mode. From 1:1 to 3:1 ratio can be used.

With P15 in stage monitor

Stage monitor applications with Subs (OMNI or CARDIO modes)

With P15 in front of house

Front-of-house applications with Subs (OMNI or CARDIO modes)

ACCESSORIES

WARNINGS

• All L18 accessories are specifically rated in agreement with structural computations.
• Never use other accessories – including push-pins – when assembling L18 cabinets than the ones provided by NEXO: NEXO
• will decline responsibility over the entire L18 accessory range if any component is purchased from a different supplier.
• All L18 accessories have been designed so that cabinets are arrayed vertically.
• PROHIBITED: L18 below L18 or PLUS serie below L18 without dedicated accessory
• LNU-HBRK18 (LNT-HBRK18)
  • Horizontal Cradle, use with L18, CLADAPT.
• Place HBRK18 on L18, use only the fasteners provided.
  • Tight properly.
  • Refer to the Product Data Sheet
• VNI-CLADAPT (PNI-CLADAPT)
  • Ceiling adapter, use with LNU-HBRK18.
  • Screw CLADAPT to the ceiling (fasteners not provided).
  • Place the assembly on CLADAPT, and use the 2 guides. Tight with the fasteners provided with CLADAPT.
  • Refer to the Product Data Sheet.
• LNI-3L18
  • L18 Rigging system (up to 3; Cardio or Omni)
  • Refer to the Product Data Sheet.
• VNI-CPL02
  • Coupling Bar for 2 or 3 L18
  • Refer to the Product Data Sheet.
• PNI-P18TOL18
  • PNI- P18TOL2L18
  • P18 Under 1xL18
  • P18 Under 2xL18 (Omni or Cardio)
  • Refer to the Product Data Sheet.
• LNT-WB18
  • Whiteboard
  • Refer to the Product Data Sheet.
  • LNT-COV18: COVER FOR L18 ON WHEELBOARD

ARRAY EQ

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

MAINTENANCE

Grille Changing: Remove 8 screws

• 18’’ Driver
  • Remove 20 screws
  • Remove the trap
• Remove 8 screws, 2 inside with a curved screwdriver.
  • Remove the driver.
• Place 8 screws.
  • Tightening torque: 3.0 Nm (Thread Locker: Loctite 242)
• Follow the sequence below to tighten the screw. Place and tighten the 12 other screws.

Spare parts

TECHNICAL SPECIFICATIONS

L18 WITH NEXO ELECTRONICS

SPECIFICATIONS

Threaded inserts on both sides for connection of mounting accessories Stand fitting M20

Connector| 2x NL4, 4 poles connectors
Weight| 50 kg / 110 lb
**Dimensions| **

• NEXO S.A.
• Parc d’activité de la Dame Jeanne
• F-60128 PLAILLY
• Tel: +33 3 44 99 00 70
• Fax: +33 3 44 99 00 30
• E-mail:info@nexo.fr
• nexo-sa.com

Documents / Resources

| NEXO L18 Passive Subwoofer [pdf] User Manual
L18 Passive Subwoofer, L18, Passive Subwoofer, Subwoofer
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References

• NEXO

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