D.A.S. ARA Series Manual de usuario

ARA series

Users manual

www.dasaudio.com

2ARA series Users Manual

INDEX

INTRODUCTION

SYSTEM COMPONENTS

AMPLIFIER MODULES

POWER CONNECTORS AND POWER CONSUMPTION

AUDIO AND AUDIO&DATA CONNECTORS

DISPLAY OF THE UNIT AND CONTROL BUTTONS

DISPLAY AND NAVIGATION MENU

ARRAY BALANCE

ATMOS. CORRECTION

NETWORKING

ETHERNET RECOMMEDED SWITCHES / ROUTERS

ACCESSORIES

RIGGING

TROUBLESHOOTING

3ARA series Users Manual

ARA series

Introduction

Welcome to the user manual for the ARA series. This

comprehensive guide is designed to provide all the

information needed for the effective and safe operation

of our ARA systems.

This manual has been structured into several key sections,

each focusing on a speciﬁc aspect of system setup, usage,

and maintenance. By providing a detailed walkthrough of

each process, we aim to ensure that users can optimally

beneﬁt from all features that our ARA systems offer.

The ‘Setup and Conﬁguration’ section of this manual

will guide you through the initial stages of installing and

setting up your ARA system. It will delve into various

network conﬁguration options, covering the use of

Ethernet switches and routers, with a focus on the DHCP

Server distribution.

In the ‘Hardware and Accessories’ section, we outline

recommended devices that complement and enhance

yourARAsystem’sperformance.Italsoprovidesguidelines

on how to choose suitable routers and Ethernet switches.

The ‘Rigging Procedures’ section emphasizes the

importance of safety and details the process of rigging

your ARA systems effectively. It provides a summary of

basic concepts related to rigging, though it is advisable to

refer to the rigging user’s manual for more comprehensive

information.

Lastly, the ‘Troubleshooting’ section provides insights into

diagnosing and resolving common issues that you may

encounter while operating the ARA system. From power

problems to sound issues, this section aims to assist you

in maintaining the system’s optimal performance.

Please read this manual thoroughly before using your ARA

system and refer to it as needed. Your understanding and

correct application of the information contained here are

critical to ensuring the best performance from the ARA

series.

4ARA series Users Manual

ARA series

System components

LARA-80 / LARA-100

LARA® is a 4-way symmetrical, cardioid, self-ampliﬁed line ar-

ray system with 6000Wrmspower. LARA® has a linear perfor-

mance of 146 dB SPL MAX and a wide dynamic range making it

an ideal system for large events. Thanks to the cardioid design,

we achieve a rear attenuation of -15 dB in the range of 63 Hz –

200 Hz.

LARA® incorporates 2 x 12″ woofers with a 4″ voice coil plus an-

other 2 x 8″ in cardioid conﬁguration; for the midrange, it uses

another 2 x 8″ speakers with 2.5″ voice coils. The high-frequen-

cy section is made up of two DAS M-78N compression drivers,

with 3″ voice coils and a 100º or 80º horizontal dispersion wave-

guide. All the elements have been designed and purpose-built

to maximize the system’s efﬁciency.

The LARA® class D ampliﬁer integrates a switching power sup-

ply with power factor correction (PFC), ensuring maximum per-

formance and efﬁciency regardless of the mains voltage. Each

ampliﬁer provides 6000Wrmsdivided into eight channels,3 of

them in bridge mode to feed the 2 x 12″ and the two compres-

sion drivers. The remainingtwo channels feed the front 2 x 8″

and rear 2 x 8″ transducers.

The 3-point rigging system works for both LARA® and LARA®

SUB, allowing us to hang arrays of up to 24 LARA units and 16

LARA® SUB units. The FSS TM (Fast Set Splay) angulation sys-

tem allows angles to be adjusted in steps of 1º, from 0º to 7º from

the stacked position, signiﬁcantly reducing assembly time.

5ARA series Users Manual

ARA series

System components

LARA-SUB

The LARA-SUB is a powered cardioid subwoofer system incor-

porating 2 DAS 18UXN neodymium low frequency transduc-

ers with 4” voice coils in a bass-reﬂex conﬁguration. A single

rear-facing 18UXN is used to create the cardioid dispersion pat-

tern avoiding unwanted energy behind the system.

Powering the LARA SUB is a 3channel Class D ampliﬁer with

independent channels powering each of the front-loaded low

frequency transducers and the rear facing cardioid speaker. The

ampliﬁer´s regulated switch mode power supply is equipped

with power factor correction reducing power consumption

while enhancing reliability and consistency in all operating con-

ditions. The onboard DSP optimizes the signal parameters for

front and rear drivers to maximize the rear rejection 14 dB from

40 Hz – 80 Hz average.

Cabinet construction follows DAS´s strict construction stand-

ards employing birch plywood and the durable ISO-ﬂexTM pro-

tective exterior coating. The LARA SUB incorporates captive rig-

ging hardware that makes use of the common LARA rigging

bumper, only one bumper type is needed to ﬂy either LARA

ARRAY or LARA SUB. The protective metal grilles are backed

using acoustically transparent and water repellent fabric. Two

recessed handles are located on each side of the enclosure.

6ARA series Users Manual

ARA series

System components

SARA-100

SARA-100 is a compact line array system with a symmetrical

design and 3000Wrms of power, SARA delivers a linear perfor-

mance of 139 dB SPL MAX and a wide dynamic range, making it

perfect for events and medium-sized installations where sound

quality and uniformity are a priority.

SARA features two customized designed 8″ loudspeakers for

mid and low frequencies and a compression driver for high fre-

quencies with a 100° horizontal dispersion waveguide.

SARA’s Class D ampliﬁer integrates a switch-mode power sup-

ply with power factor correction (PFC), ensuring optimum per-

formance and efﬁciency regardless of the mains voltage. The

ampliﬁer provides 3000Wrms of power, divided into 4 chan-

nels, two of which are used in bridge mode to power the com-

pression driver, and the remaining two are used to power the 8″

front speakers.

The three-point rigging system can be used for both SARA and

SARA-SUB, allowing arrays of up to 24 SARA and 16 SARA-SUB

units to be hung. In addition, using the JP-SARA accessory,

up to 12 units of SARA can be hung below the SARA-SUB. The

FSS™ (Fast Set Splay) system allows angles to be adjusted in 1°

steps from the stacked position, signiﬁcantly reducing assem-

bly time.

7ARA series Users Manual

ARA series

System components

SARA-SUB

SARA-SUB is a high-ﬁdelity subwoofer that offers an accurate

and powerful bass response thanks to its cardioid design. The

system incorporates a DAS 18UXN neodymium loudspeaker

with a 4″ voice coil for excellent low-frequency reproduction.

In addition, a rear 15FWN neodymium 3″ voice coil speaker cre-

ates the necessary cardioid dispersion pattern to compensate

for unwanted energy in the rear.

The SARA-SUB’s built-in class D ampliﬁer has 4 channels in

bridge mode for each of the speakers. The switch-mode power

supply has a correction factor, allowing for greater efﬁciency

and reliability under all operating conditions. The built-in DSP

optimizes the signal parameters for the loudspeakers and al-

lows for 14 dB of rear power compensation in the 40 Hz – 80 Hz

range.

The enclosure design meets the strict DAS standards for the

use of high-quality materials, such as birch plywood and ISO-

ﬂex™ exterior protection. In addition, the rigging system allows

the SARA to be ﬂown underneath the SARA-SUB, using the JP-

SARA. The metal grids incorporate acoustically transparent,

moisture-repellent fabric. Recessed handles on the sides of the

enclosure facilitate transport and handling.

8ARA series Users Manual

ARA series

Ampliﬁer Modules

The ARA series is a family of self-powered products that includes

newest and most technologically sophisticated power packs in

the systems. A very powerful DSP platform working at 96kHz is

included allowing control and monitoring features. ALMA soft-

ware is the dedicated tool to adjust, control and optimize the

systems. Connectivity between the ampliﬁer modules and the

control computer and ARA-RACKs is done using standard TCP/

IP data protocols.

POWER CONNECTORS and POWER CONSUMPTION

At the ampliﬁer’s panel 2 powerCON true1 connectors (in and

loopthru) are used to inject power into the units and as well

linking power to other units.

The maximum number of units that can be linked in terms of

power depends on the consumption of each unit.

When working at 230/208V these are the limitations per system

model:

Please refer to the conﬁguration documents to check connec-

tions between units.

AUDIO AND AUDIO & DATA CONNECTORS

Analog audio can be connected independently by using the

XLR Signal Input connector or in conjunction with control and

monitoring data by the use of the IN ethercon connector:

All ampliﬁers are including a 1.54” OLED display to provide cer-

tain level of conﬁguration by the use of the control knobs (up/

down/back/enter) and checking information such as ﬁrmware

version.

Max number of linked

units (power)

LARA 2

LARA-SUB 2

SARA 4

SARA-SUB 3

9ARA series Users Manual

ARA series

Ampliﬁer Modules

DISPLAY OF THE UNITS AND CONTROL BUTTONS

The display and control buttons of a SARA unit (LARA/LARA-SUB/

SARA-SUB use the same hardware) are shown below:

On the left side 4 different LEDs are located.

- The ON Led will lit in green when the unit is connected to mains.

- The COMMs Led will lit in orange when the system has been

connected to ALMA.

- The SIGNAL / LIMIT led will lit in green or red depending on the

signal level. Red shall represent limit status on at least one of

the channels of the system.

- The PROTECT Led will lit in red if an ampliﬁer detects failure or

activates the protection mode.

10ARA series Users Manual

The Display shows the status of the system as follows (LARA and

SARA):

1. System Model

2. IP: Active when the system has obtained an IP address from a

DHCP server (router) or via Static conﬁguration.

3. L/Sxxxx: ID name of the system. ALMA needs a unique ID name

per device. When systems are manufactured the ampliﬁers are

loaded with this unique ID number*.

4. Mute / Unmute: this symbol shows with a X on top of the speak-

er symbol if the system has been totally or partially muted by

using ALMA.

5. Device Gain: variations of Gain (level in dB) are possible from

+6dB to -40dB in 0.1 increments / decrements.

6. Device Delay: from 0ms to 323ms.

7. Array Balance settings. The graph shows both, AB Low and AB

High settings.

8. HPF ﬁlter: In case of “top” units such as SARA / LARA this part

of the display shows the active High Pass Filter (63/80/100Hz).

In case of subwoofer units, SARA-SUB / LARA-SUB, this part of

the display shows the active Low Pass Filter (LPF) 63/80/100Hz.

9. D EQ: When an equalization is active in the device (device EQ

or Global EQ on ALMA) this box will say D EQ. When no EQ is

applied the box appears empty.

ARA series

Ampliﬁer Modules

10. HOS: High Order Shelving EQ. When a HOS equalization is

being active in the device (via ALMA), this box will say HOS.

When no EQ is applied the box appears empty.

11. DASaim: When the system has an active DASaim FIR ﬁlter

these lines appear in the box.

12. Atmos. Correction enabled: As sound propagates through

the atmosphere its energy is gradually absorbed by a num-

ber of energy-exchange processes in the air called atmos-

pheric absorption. To compensate this effect Atmos. Correc-

tion ﬁlter are appied at High frequencies depending on the

ambient conditions.

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