Outline SCALA 90 User manual

USER MANUAL
SCALA 90
Constant Curvature Array

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: [phone]
Fax [phone]
[email protected] www.outline.it
2
SAFETY REGULATIONS
Please read this manual carefully and in its entire-
ty. It contains important information regarding safety
issues, including guidelines for general safe use of
rigging systems as well as advisories on govern-
ment regulations and liability laws. The suspension
of large, heavy objects in public places is subject
to numerous laws and regulations at the national/
federal, state/provincial, and local levels. The user
must assume the responsibility for making sure that
the use of any rigging system and its components in
any particular circumstance or venue conform to all
applicable laws and regulations in force at the time.
GENERAL SAFETY RULES
• Carefully read this manual in all its parts
• Respect the working load limits and maxi-
mum configurations of the elements and of any
third-party component (such as suspension
points, motors, rigging accessories, etc...)
• Do not incorporate any accessory not designed
in compliance with current safety regulations by
qualified personnel or not provided by Outline; all
damaged or defective components must be re-
placed only by equivalent parts approved by Out-
line
• Ensure personnel health and safety, ensure that
no one is standing under the system during the
installation, ensure that all personnel involved in
the installation are equipped with personal safety
devices
• Always double check that the elements are cor-
rectly connected before suspending the system.
The rigging elements are easy to use, however the
installation shall be carried out only by qualified
personnel that are familiar with the rigging tech-
niques, safety recommendations and with the in-
structions described in this manual.
All mechanical components are subject to wear
and tear over prolonged use as well as corrosive
agents, impacts or inappropriate use. For this rea-
sons users have the responsibility to adopt and ad-
here to a schedule of inspections and maintenance.
Key components (screws, connecting pins, welded
points, rigging bars) must be inspected before every
use. Outline strongly recommends to carefully in-
spect the system components at least once a year,
reporting in a written document the date, the name
of the inspector, the points checked and any anom-
alies discovered.
DISPOSAL OF WASTE MATERIALS
Your product is designed and manufactured
with high quality materials and components,
which can be recycled and reused. When this
crossed-out wheeled bin symbol is attached to a
product, it means the product is covered by the Euro-
pean Directive 2012/19/EU and subsequent amend-
ments. This means that the product must NOT be
disposed of with other household-type waste. It is
the users’ responsibility to dispose of their waste
electrical and electronic equipment by handing it
over to an approved reprocessor. For more infor-
mation about where you can send your equipment
for recycling, please contact your local distributor.
The correct disposal of your old product will help
prevent potential negative consequences for the
environment and human health.
CONFORMITY AND WARRANTY
All the Outline electro-acoustic and elec-
tronic devices are in conformity with the
provisions of EC/EU directives (as stated in
our CE declaration of conformity).
The CE declaration of conformity is attached to the
product warranty certificate and is shipped with
the product.

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: [phone]
Fax [phone]
[email protected] www.outline.it
3
SCALA 90 DESCRIPTION
SAFETY PRECAUTIONS
Outline SCALA 90 is a medium-throw, Constant
Curvature Array enclosure weighing just 21 kg yet
capable of a peak SPL of 139 dB.
Its usefulness is extended by its ability to be
arrayed in either vertical or horizontal orientation,
for example with just six cabinets providing a full
135-degree coverage in both deployments. A single
element produces a nominal dispersion of 90° x
22.5° (H x V). Scala 90 is designed for venues such as
theaters and opera houses, clubs, auditoriums and
houses of worship. The enclosure mounts two 8”
partially horn-loaded mid-woofers with neodymium
magnets and a 3”-diaphragm compression driver
(1.4” exit) loaded on a waveguide with a unique
proprietary design, ensuring the lowest possible
distortion levels and greater reliability.
Scala 90 implements the Outline V-Power concept
to specifically control the coupling between the array
modules, and all the radiating surfaces of the cabinet
are perfectly symmetrical. The suspension hardware
is designed to be unobstructive for installations.
The cabinets are constructed from birch plywood
finished with high-tech black polyurea free scratch
finish and the grill has an epoxy powder coating.
Scala 90 is fitted with ten M10 threaded rigging
points made of corrosion-resistant anodized
aluminium alloy (Ergal) allowing suspension and
safety cable attachments.
Scala 90 is intended to be used in installations and
must be installed following the local and regional
safety rules. Specific rules must be applied to the
rigging structures that have to hold the assembly
of one or more devices and to the cables for the
connection to the amplifier.
Periodic controls must be performed at regular
time intervals according to local laws, to the
presence of additional safety devices (such as tab
washers against screw loosening) and to the working
conditions of the components.
An example of tests includes: a transducer test
(i.e. to be performed before and after every use), a
visual test for the rigging safety (i.e. to be performed
every six months), a visual test for the paint and
wooden external parts (i.e. to be performed once a
year).
The results of the periodic tests must be reported
on a document like the one at the end of this manual.

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: [phone]
Fax [phone]
[email protected] www.outline.it
4
RIGGING INSTRUCTIONS
Scala 90 can be configured in different ways to
achieve different coverage targets.
In order to create both vertical and horizontal
arrays, external fixed hardware accessories are
required. In both cases, the loudspeakers must
always be connected on both sides with the dedicated
accessory plates provided by Outline (the transparent
blue ones in the image below) or with external
hardware, structure. The external hardware must
be approved by a licensed professional engineer.
For the vertical array it is possible to use either
a load-bearing structure or lifting devices such as
eyebolts. The bearing structure must be designed
according to the local laws and local safety factors,
considering the total load of the system, the dynamic
factors inducted by vibrations, winds and mounting
procedures (responsibility of the installer). If eyebolts
are used, with Outline plates, please check the load
capacity before the installation (The maximum
capacity, indicated in kg, on the eyebolts refers to
the straight throw; the capacity for the orthogonal
pull at 90° is indicated on the package label).
For the horizontal array lifting devices must be
used, certified for the weight to hang (the eyebolts
shown in the following figure are just an example). At
least one lifting devices for every two loudspeakers
shall be guaranteed with alternate speakers (as
shown in the figure below) in order to distribute the
load, with relative chain (in this case it is possible
to make a complete circle of loudspeakers and
therefore have a coverage of 360°). Please note that
is very important to consider also the inclination of
the array.
A fall protection system must be created with
suitable devices such as rope or chains, the M10
points can be used for this purpose.
Safety devices must be used to guarantee the
tightness of the assemblies over time, for example
washers with folding tabs. In addition, tie rods must
be provided to counteract the wind.
The cables and chains used for the installation
shall be connected to the supporting structure on
the vertical axis respect to the fixing points on the
cabinet (or with an inclination of a few degrees) and
they must all be tense to avoid overloading a single
point.
The maximum number of cabinets per array is
strictly related to the hanging method used.

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: [phone]
Fax [phone]
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5
The rigging points consist of unperforated inserts
designed to hold a M10 bolt. The inserts are made of
anodized corrosion-resistant aluminium alloy (Ergal)
but it is in any case suggested to protect against dust
and any other external agents the points that are not
used.
The length of the screw must allow the effective
use of 30 mm of thread, as shown in the picture
below. It is strictly forbidden to use a shorter screw
for safety reasons and to avoid damages to the
loudspeaker. The screw should be of the closest
length (less than or equal) to the sum of 30 mm +
the thickness of the external elements: for example
for a 5 mm plate + 2 mm washer we would have 37
mm (length not commercially available); therefore
the M10x35mm bolt must be used.
RIGGING POINTS DETAILS
Each Scala 90 offers ten M10 threaded female
points. Four rigging points are available on each
side of the Stadia cabinet. Two of them are close to
the front panel (as shown in the picture below) and
three are close to the rear panel. Standard utilization
involves the use of the point closer to the rear panel
for the safety cable attachments, but depending on
the support structure all 10 threaded inserts have
the same capacity and can be used for any purpose.
Please refer to the overall dimensions drawings for
the exact position of each point.
A
A
Screw M10 ISO
L = 30mm +
tot. ext. thickness
Flat washer
Connection
plate
Internal structural
stainless steel bracket
ERGAL threaded insert
with external hole M10 x 30
Cabinet structure
in birch plywood
Connection
plate
Connection
plate
B

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: [phone]
Fax [phone]
[email protected] www.outline.it
6
The external hardware must be placed in contact
with the cabinet. Tightening the screw with hardware
that is not in contact with the enclosure may result
in damage to the rigging points or to the cabinet if
excessive torque is applied.
The connection of the external hardware to the
rigging points must be made using proper bolts (the
usual class is 8.8), following the above prescriptions
and applying a controlled torque value with the help
of a torque wrench (dynamometric key).
The tightening torque defines the axial force
between the bolt and the insert and depends on
the frictions with the washer and the thread of the
insert. As a result of this, in order to apply the same
axial force, smaller torque is required if the parts
are lubricated.
The torque to apply has been defined considering
the resistance of the insert, of the wood and the
interaction between the parts. The maximum
tightening torque is 30 Nm for lubricated parts.
Tightening the bolts with higher or not controlled
torque might result in damages and risk for the
safety.
22 mm
27 mm
Steel Bracket
Fixing screws
Steel Threaded Insert
with internal anti-rotation
Hexagon Nut
Maximum
screw insertion
Minimum
screw insertion
Cabinet (with paint)
External
Hardware
(example)
External Washer
with locking system
External M10 Bolt
No space between
cabinet and hardware
Space between
cabinet and hardware
Cabinet
External
Hardware
Cabinet
External
Hardware
Min 22 mm
Max 27 mm Yes No
< 22 mm
Cabinet
External
Hardware
Yes
Cabinet
External
Hardware
No
RIGGING POINTS MAXIMUM TORQUE
MAX Torque
30 Nm

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: [phone]
Fax [phone]
[email protected] www.outline.it
7
AMPLIFICATION
CABLE SELECTION AND AMPLIFIER CONNECTION
Scala 90 is two-way systems designed to be used
with two amplifier channels. It features two 8”
woofers and one 3” compression driver.
The connections are available on two NL4 speakON
connectors.
The mid-low frequency section is using pin 1+/1-
while the high frequency section is using pin 2+/2-.
The system shall be used with the suggested
Outline amplifier and presets DSP ensuring safe
working condition and expansive dynamics..
However it is possible to control parameters such
as levels, delay, polarity and input EQ.
The connection from the amplifier to the
loudspeakers must ensure proper energy
transmission and small losses. A general rule is that
the cable’s resistance should not be greater than the
10% of the minimum impedance of the components
to be connected. Each Scala 90 has a nominal
impedance of 8 Ω (LF) and 8 Ω (HF).
The resistance of the cable can be found in the
catalogues of the cable manufacturers. These
usually report the resistance of the length of one
conductor, so this value shall be multiplied by 2 to
consider the total round trip distance.
The resistance of the cable (round trip) can also
be estimated with the following formula:
R = 2 x 0.0172 x l / A
Where ‘R’ is the resistance in ohm, ‘l’ is the length
of the cable in meters and ‘A’ is the section area of
the wire in square millimeters.
The following table reports the resistance in ohm
per kilometer for different wire sections (calculated
with the formula above) and the recommended
maximum length of the cable.
Please, note that these values refer to driving a
single element per channel.
Wire area [mm2] AWG Round trip cable resistance
[Ω/km]
max cable length [m]
(R <= 0.8 Ω)
2.5 ~13 13.76 58
4 ~11 8.60 93
6 ~9 5.73 139
8 ~8 4.30 186
1+
1-
2+
2-
1+
1-
2+
2-
NL4
NL4

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: [phone]
Fax [phone]
[email protected] www.outline.it
8
OVERALL DIMENSIONS
500
308,5
700
22,5°
104,4284,361,3
80
136
129,3
155
233,67 266,45
#5 M10 FIXING POINT
(also on opposite side)

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: [phone]
Fax [phone]
[email protected] www.outline.it
9
TECHNICAL SPECIFICATIONS
PHYSICAL
Component Midrange 2 x 8” NdFeB midwoofer
Component High 1 x 3” diaphragm NdFeB compression driver (1.4” exit)
Midrange Loading Partially horn, bass-reflex
High Loading Proprietary waveguide
Connectors 2 x NL4 in parallel
Cabinet Material Baltic birch plywood
Cabinet Finish Black polyurea coating
Grill Epoxy powder coated
Rigging 10 x M10 threaded points
Height 309 mm - 12 1/8”
Width 700 mm - 27 4/8”
Depth 500 mm - 19 5/8”
Weight 21.5 kg - 47.4 lb
PERFORMANCE SPECIFICATIONS
Frequency Response (-10 dB) 65 Hz - 20 kHz
Horizontal Dispersion 90°
Vertical Dispersion 22.5°
Operating Configuration Bi-amplified
Impedance Midrange (Nom.) 8 Ω
Impedance High (Nom.) 8 Ω
Watt AES Midrange (continuous / peak) 500 W / 2000 W
Watt AES High (continuous / peak) 120 W / 480 W
Maximum SPL Output* 139 dB SPL
*calculated using a +12 dB crest factor signal (AES2-2012)

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: [phone]
Fax [phone]
[email protected] www.outline.it
10
APPENDIX - PERIODIC CONTROLS
All the loudspeakers, before the shipment, are ful-
ly tested at the end of the production line, but before
the system is installed an overall check shall be per-
formed to ensure that the system has not been dam-
aged during the shipment. Periodic controls shall be
performed at regular time intervals. The following ta-
ble represents an ideal check list and shall be com-
pleted with the external rigging elements.
Loudspeaker Serial Number: Position:
Date
Transducers Impedance
Amplifier
Loudspeaker cabinet
Loudspeaker grills
Grills screws
Hardware
Hardware bolts
Main rigging structure
Safety devices
Additional notes
Signature

OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: [phone]
Fax [phone]
[email protected] www.outline.it
11
NOTES

Outline carries out on-going research for product improvement. New materials, manufacturing methods
and design upgrades are introduced to existing products without prior notice as a routine result of this phi-
losophy. For this reason, any current Outline product may differ in some aspect from its description, but will
always equal or exceed the original design specifications unless otherwise stated.
© Outline 2020
Operating manual product code: Z OMSCALA90
Release: 20211124
Printed in Italy