Next PROAUDIO LAs118v2 Manuale utente

V201811

LAs118v2

Hybrid-Horn Arrayable

Subwoofer

USER MANUAL

NEXT LAs118v2 - User Manual

www.next-proaudio.com

CONTENTS

INTRODUCTION 2

UNPACKING 2

LAs118v2 OVERVIEW 2

SAFETY FIRST 3

CONNECTIONS AND ELECTRIC DIAGRAM 5

CABLE SELECTING 5

RIGGING LAs118v2 6

GROUND STACKING LAs118v2 11

LAs118v2 and LA122v2 12

LAs118v2/LAs118A DOLLY 13

TROUBLESHOOTING 14

WARRANTY 14

TECHNICAL SPECIFICATIONS 15

NOTES 16

CONTACTS 17

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- 2 -

INTRODUCTION

Thank you for purchasing a NEXT-proaudio LAs118v2 Hybrid-Horn Arrayable Subwoofer. This manual will

provide you with useful and important information about your NEXT-proaudio LAs118v2 element. Please devote

some time reading this manual, and keep it at hand for future reference. NEXT-proaudio is concerned with your

safety and well-being, so please follow all instructions and heed all warnings. Also, a better understanding of some

specific features of the LAs118v2 element will help you to operate your system to its full potential. With a continuous

evolution of techniques and standards, NEXT-proaudio, reserves the right to change the specifications of its

products without early warning. For the most current data, please visit our website: www.next-proaudio.com

UNPACKING

Each NEXT-proaudio Las118v2 subwoofer element is built in Europe (Portugal) by NEXT-proaudio, according

to the highest standards and thoroughly inspected before it leaves the factory. When unpacking the NEXT Las118v2,

examine it carefully for any signs of possible transit damage and inform your dealer immediately if any such damage

is found.

It is suggested that you retain the original packaging so that the system can be repacked in the future if

necessary. Please note that NEXT-proaudio and its authorized distributors cannot accept any responsibility for

damage to any returned product through the use of non-approved packaging.

When the product has reached the end of its useful life, please dispose of it responsibly through a recycling

centre.

LAs118v2 OVERVIEW

The LAs118v2 is one of the many members of the NEXT-proaudio LA Series speakers. It is a passive Hybrid-

Horn single 18” subwoofer. The integrated rigging hardware was designed to be used as part of a NEXT-proaudio

LA122v2 system or as a stand-alone system using the exact same rigging frame structures. It is fully compatible

with the LA122v2 line array element also on the ground. The LA122v2 stacks on top of the LAs118v2 without the

need of other accessories, providing a cheaper solution where this kind of assembly is needed.

The LAs118v2 is fitted with universal plastic feet, being possible to stack it on any position. It stacks upside

down and turned backwards. This feature allows, for example, cardioid response system stacks.

The integrated low frequency driver, with 4” voice coil, delivers 2400W even on the lowest frequencies

allowing, when suspended with LA122v2, the best sound coherence.

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V201811

SAFETY FIRST

It’s important that loudspeaker systems are used in a safe manner. Please take some time to review the

following points concerning safe use of the NEXT LAs118v2 subwoofer element.

NEXT LA Series systems are capable of producing extremely high sound

pressure levels and should be used with care. Hearing loss is cumulative and

can result from levels above 90dB if people are exposed for a long period. Never

stand close to loudspeakers driven at high levels.

DANGER – HEARING DAMAGE

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER

NO USER SERVICEABLE PARTS INSIDE

REFER SERVICE TO QUALIFIED PERSONNEL

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- 4 -

GROUND STACKING

•Always ensure that the floor or structure where the stack will be placed is even and can withstand the weight

of the complete stack.

•Do not stack speakers too high, especially outdoors where winds could topple the stack.

•Place cables in a way that they do not present a trip hazard.

•Do not place any objects on top of the stack, they can fall accidentally and cause injuries.

•Do not attempt to move the enclosures while connected.

•Try not to operate the LAs118v2 under heavy rain or moisture, it is weather-resistant but not completely

“weather-proof”.

•Do not expose the systems to extreme heat or cold conditions to prevent component damage.

RIGGING AND SUSPENSION SAFETY CONSIDERATIONS

•Before rigging or suspending NEXT LAs118v2 systems, inspect all components and all hardware for any signs

of damage or missing parts.

•If you find any damaged, corroded or deformed parts, do not use them, replace them immediately.

•Do not use hardware that isn’t load rated or that its’ rating is not enough to handle the system’s weight with

a good safety factor (4 minimum). Don’t forget that the hardware won’t just hold the systems weight. It has

to be sturdy enough to handle dynamic forces like winds and other, without any part deformation. NEXT-

proaudio advises customers to contact a licensed, professional engineer regarding equipment installation.

•NEXT LAs118v2 system installation should only be carried out by qualified personnel.

•Always use adequate protective clothing and equipment to prevent possible injuries.

•Only install the systems on solid, levelled ground and isolate the surrounding area during installation and

operation, to prevent general public presence near the systems.

•Be sure you understand all local and national regulations regarding equipment installation.

•Failure to comply with these instructions may result on injury or death.

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- 5 -

V201811

CONNECTIONS AND ELECTRIC DIAGRAM

The LAs118v2 is connected through Neutrik® SpeakON® NL4 plugs (not supplied). A wiring description is

printed on the connections panels located on the back of the cabinet.

The 4 pins of the two Neutrik® NL4 SpeakON® sockets are wired in parallel within the enclosure. Either

connector can be used to connect to the amplifier or another LAs118v2 element. See the table and the diagram

below:

NL4 PIN

Description

1+ LOW +

1- LOW -

2+ LINK +

2- LINK -

CABLE SELECTING

Selecting a cable consists of calculating the correct cable section (size) in relation to the load impedance

and the required cable length. A small cable section will increase its serial resistance, which will induce power-

loss and response variations (damping factor).

The following table indicates, for 3 common sizes, a cable length with a maximum serial resistance equal to

4% of the load impedance (damping factor = 25):

Cable section

Maximum Length related to load impedance

8Ω

4Ω

1.5 mm²

12m [40 ft]

6m [20 ft]

2.5 mm²

20m [64 ft]

10m [32 ft]

4 mm²

32m [104 ft]

16m [52 ft]

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- 6 -

RIGGING LAs118v2

The LAs118v2 was designed having always two main concerns in mind, ease of use and safety. It was

especially designed to perfectly complement NEXT LA122v2 line array, being able to share the same rigging

structures and accessories.

On each side of the LAs118v2 enclosure are 2 pairs of high strength rigging plates, which form a channel

on top of the enclosure for the sliding arms of another LAs118v2 or the hinges/swing arms of the LA122v2. The

same plates hold the sliding arms and arm locking mechanisms on the bottom of the enclosure. The normal

procedure of rigging a column of LAs118v2 enclosures is quite simple and fast, as seen later in this manual, but

first let’s take a look at Figure 4 for a description of the enclosure rigging panels.

Figure 1 - LAs118v2 Integrated Rigging Hardware Reference

Before continuing, remember the safety considerations on

“Safety First” chapter. If you haven’t read it yet, please read it

now.

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V201811

We will now discuss the actual rigging of the NEXT LAs118v2, either stand-alone LAs118v2 systems or

integrated in the LA122v2 systems. Keep in mind though that this is a minimum 2-man job. These are heavy

enclosures and it’s easy for someone to get injured if he/she tries to manage it alone. In every step of the rigging

procedure always check that the locking pins a secure. In order to successfully suspend the LAs118v2 you’ll need

to have these accessories:

Figure 2 - NC18124 Rigging Structure

In Figure 5 we can see a drawing of the NC18124 Rigging Structure. This structure is used on several NEXT-

proaudio line array elements: LAs118A, LA122A, LA122WA, LAs118v2, LA122v2 and LA122Wv2. With a working

load limit (WLL) of around 600 kg and a minimum safety factor of 4:1 this structure can hold up to 8 - NEXT

LAs118v2 or any combination of NEXT LAs118v2 and NEXT LA122v2 under the WLL.

Figure 3 - NEXT VP60052 Locking Pin

Never use any lock pins but the ones supplied by NEXT-proaudio. These pins are built to

withstand the system’s weight with a good safety factor. They are also built with very specific

dimensions. On the other hand, before you suspend the system, please read the instructions in

the “Safety first” chapter.

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- 8 -

Now let’s review a 6-unit LAs118v2 suspended system rigging procedure.

1. - Start by preparing the rigging structure to be positioned on the LAs118v2. Take the swing arms out of

the parking positions and rotate them until they are aligned with the safety lock insert and insert a locking pin in

each of the four swing arms.

2. – Insert the front swing arms of the structure in the front LAs118v2 channels as shown in the picture, and

insert another 2 locking pins, one in each swing arm.

Indice

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