Turbosound LMS-D24 User manual

ASPECT TA-890 SYSTEM
USER MANUAL
Turbosound Ltd.
Star Road, Partridge Green
West Sussex RH13 8RY United Kingdom
Tel: [phone] Fax: [phone]
web: www.turbosound.com
Issue 1.3 © Turbosound Ltd, October 2005

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Contents
EC Declaration of Conformity........................................................................................................................6
Introduction ....................................................................................................................................................7
Turbosound Aspect System Concepts .....................................................................................................7
The Turbosound Polyhorn™.....................................................................................................................7
Aspect TA-890 Turnkey System Concept......................................................................................................9
The Loudspeaker Management System (LMS) Concept.......................................................................10
LMS-D24, LMS-D26 and LMS-D6 Loudspeaker Management Systems...............................................10
Amplifier Racks........................................................................................................................................10
Power Amplifiers.....................................................................................................................................10
Digital Controllers ...................................................................................................................................11
Aspect Loudspeaker Components..........................................................................................................11
TA-890L Low Frequency Enclosure ........................................................................................................11
TSW-218 Subwoofer ...............................................................................................................................12
TA-890H Mid-high Enclosure..................................................................................................................12
Transportation.........................................................................................................................................14
Aspect Flying Systems............................................................................................................................15
Flying and Stacking......................................................................................................................................16
Overview..................................................................................................................................................16
GigMate™ Acoustic Simulation..................................................................................................................17

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Setting up a Venue - Overview...............................................................................................................17
Running Turbosound GigMate™ / EASE Focus for the first time: .......................................................18
Designing a system................................................................................................................................. 20
Changing the system ..............................................................................................................................23
Safety Notes on Rigging .........................................................................................................................25
Sample Certificate of Load Test .............................................................................................................26
Flying Hardware ......................................................................................................................................27
Wide and Narrow Flybar Settings ..........................................................................................................27
Figure 1. Single A-System Flybar FB-890/1A .........................................................................................28
Figure 2. Double A-System Flybar FB-890/2A........................................................................................29
Figue 3. Triple ‘A’ System Flybar FB-890A/3W ......................................................................................30
FC-890 Flying Chains............................................................................................................................... 31
TS-890 Tilting Straps............................................................................................................................... 31
Three-wide hang using MB-890, EB-890, FB-890/2A and FB-890/1A ....................................................32
Four-wide hang using MB-890 and FB-890/2A ......................................................................................33
Integral Flying Hardware ........................................................................................................................34
‘A’ System Flygear ..................................................................................................................................34
1. Drop Link..............................................................................................................................................35
2. Swing Latch .........................................................................................................................................35
Connecting Flying Chains to the Cabinet............................................................................................... 35
Figure 1 – insert cabinet link Figure 2 – release swing latch.............................................................35
Connecting Cabinets - ‘A’ System.......................................................................................................... 35
Setting Vertical Angles – ‘A’ System......................................................................................................36
Attaching the Tilt Straps .........................................................................................................................37
Turbobass Directivity ..............................................................................................................................38
Bass Enclosure arraying..........................................................................................................................38
Aiming - directivity of the stack..............................................................................................................38
The typical Left to Right problem........................................................................................................... 40
Creating Directional Bass arrays: ...........................................................................................................41
Bass in a line:...........................................................................................................................................41
Fanned bass.............................................................................................................................................42
Bessel Array............................................................................................................................................. 43
General observations of long lines of bass ...........................................................................................43
End firing array........................................................................................................................................44
Summing up............................................................................................................................................45
Ground stacking ...................................................................................................................................... 46
LMS SERIES Loudspeaker Management SystemS ....................................................................................47

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Introduction .............................................................................................................................................47
General features & facilities....................................................................................................................47
Unpacking................................................................................................................................................47
Mechanical Installation ...........................................................................................................................47
LMS-D6 Front Panel Functions ...............................................................................................................48
LMS-D6 Rear Panel Functions ................................................................................................................49
Mains Power............................................................................................................................................49
Voltage Setting........................................................................................................................................50
Safety Earthing........................................................................................................................................50
AC Power Fusing .....................................................................................................................................50
Powering Up............................................................................................................................................50
Audio Connections..................................................................................................................................51
Input and Output Connector Wiring.......................................................................................................51
Time correction for loudspeaker driver placement...............................................................................51
LMS-D24 and D26 LOUDSPEAKER MANAGEMENT SYSTEMS................................................................52
Features ...................................................................................................................................................52
Front Panel Functions .............................................................................................................................53
Rear Panel Functions...............................................................................................................................55
Operating the LMS-D24 and D26.................................................................................................................56
Starting up ...............................................................................................................................................56
Selecting a Factory Preset.......................................................................................................................56
Creating a Crossover...............................................................................................................................56
Navigation and Viewing Parameters......................................................................................................57
Navigation................................................................................................................................................58
Preset Recall ............................................................................................................................................59
Preset Store .............................................................................................................................................60
DSP Processing Layout................................................................................................................................61
Input DSP block diagram ........................................................................................................................61
Output DSP block diagram .....................................................................................................................61
Stereo / Mono Formats ...........................................................................................................................61
DSP processing ............................................................................................................................................62
Input Channels.........................................................................................................................................62
Parametric Equalisation ..........................................................................................................................64
High and Low shelving filters.................................................................................................................64
Parametric filters .....................................................................................................................................64
Output Channels ..........................................................................................................................................65
Gain and Polarity.....................................................................................................................................65
Delay ........................................................................................................................................................65
High and Low Pass Filters.......................................................................................................................66
Parametric Equalisation ..........................................................................................................................67
Limiters ....................................................................................................................................................68
Routing.....................................................................................................................................................68
Utilities..........................................................................................................................................................69

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Utility functions .......................................................................................................................................69
Rear Panel Functions...............................................................................................................................70
AMP-890 Aspect System Amplification Rack .............................................................................................71
Racking, Cables and Connections ..........................................................................................................71
Options.....................................................................................................................................................72
Input Connections ...................................................................................................................................72
Figure 1. Amplifier Rack Signal Wiring..................................................................................................73
Output Connections ................................................................................................................................73
Figure 2. Mid-High Outputs ....................................................................................................................74
Figure 3. Bass Outputs............................................................................................................................74
Break-out Cables – NL4 bass ..................................................................................................................75
Break-out cables – NL8 mid-high............................................................................................................76
Extension Cables .....................................................................................................................................76
Mains Connections..................................................................................................................................77
T-25 and T-45 High Efficiency Audio Power Amplifiers............................................................................. 78
General Features & Facilities..................................................................................................................78
Front Panel Functions T-25 .....................................................................................................................79
Front Panel Functions T-45 .....................................................................................................................80
Mechanical Installation ...........................................................................................................................81
Mains Power............................................................................................................................................81
Powering Up............................................................................................................................................ 81
Safety Earthing........................................................................................................................................81
Voltage Setting........................................................................................................................................ 82
Voltage Range .........................................................................................................................................82
Audio Connections & Controls ............................................................................................................... 82
Polarity.....................................................................................................................................................83
Input Impedance...................................................................................................................................... 83
Gain and Sensitivity Settings ................................................................................................................. 83
Attenuation & Gain Setting ....................................................................................................................84
Output Connections ................................................................................................................................84
Damping Factor....................................................................................................................................... 84
Long Speaker Lines.................................................................................................................................85
The Cooling System................................................................................................................................85
Maintenance.................................................................................................................................................86
To rotate the horn moulding from ‘A’ mode to ‘B’ mode.....................................................................87
To rotate the horn moulding from ‘B’ mode to ‘A’ mode.....................................................................88
Removal of the high frequency driver ...................................................................................................88
Removal of the high-mid frequency driver............................................................................................ 89
Removal of the low-mid frequency drive units ..................................................................................... 90
General Maintenance..............................................................................................................................90
Flying hardware.......................................................................................................................................90
Paintwork.................................................................................................................................................91
Technical Specifications ..............................................................................................................................93
Warranty.......................................................................................................................................................94

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EC DECLARATION OF CONFORMITY
Manufacturer
Turbosound Ltd
Star Road, Partridge Green, West Sussex, RH13 8RY, UK
Products
T-25 Power Amplifier
T-45 Power Amplifier
LMS-D6 Loudspeaker Management System
LMS-D24 & LMS-D26 Loudspeaker Management System
Standards
Safety EN60065:2003
Relevant Specifications used as basis for tests EN66103-1:1996
EN55103-2:1996
Category
Professional apparatus for use in Commercial Light Industrial and controlled EMC
environments.
CE Marking
All products are marked in accordance with the relevant statutory requirements.

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INTRODUCTION
Turbosound Aspect System Concepts
The TA-890 system is a modular point source loudspeaker system designed to deliver
extremely high fidelity audio. The system is easily scaleable from large and medium scale
concert touring applications to small clubs and events.
The Aspect system concept centres around the exceptional directivity of the patented
Polyhorn™ devices employed in the high frequency and high-mid frequency sections of the
mid/high enclosure. In contrast to the majority of conventional horns, the Polyhorns develop
a more consistent frequency response across all seats of an auditorium with minimal
interference between adjacent enclosures.
The Turbosound Polyhorn™
The patented Polyhorn™ devices – employed in both the high frequency and high-mid
frequency bands – exhibit a sharp cut-off at the edges of the dispersion pattern, making it
possible to produce seamless coverage of a venue with minimal destructive interference
between elements, however many individual enclosures are deployed in the cluster. The
Polyhorn™ devices generate a phase-coherent and smoothly-curved wavefront which
matches the array curvature, whose centre becomes the virtual point source.

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Conventional HF horns produce destructive interference
Poyhorn™ - smoothly curved wavefront
The TA-890H mid-high enclosure forms the main component of flown clusters, and can be
orientated either horizontally or vertically (the mid/high section pictured above is square and
rotatable) in order to match venue specifics such as rigging height and audience sightline
restrictions. It can also be usefully employed as a front or side fill cabinet.
The TA-890L low frequency enclosure can either be integrated in a flown cluster with TA-
890H enclosures, due to its identical size and flying hardware, or can be ground stacked.

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ASPECT TA-890 TURNKEY SYSTEM CONCEPT
Aspect is available as an integrated audio system package, comprising loudspeakers with
integral flying hardware, amplifier racks and all necessary drive and control equipment in an
extremely compact and manageable form. In addition, the system has been designed to truck
pack efficiently and handle easily.
The concept of assembling a system around standardised components ensures absolute
compatibility between users, although sufficient flexibility is built into the rack design to
allow for varying requirements such as the ratio of bass cabinets to mid-highs, or 4-way or 5-
way operation. Aspect systems from different sources may therefore be freely combined
without difficulty. This provides owners with a considerable competitive advantage in
servicing the requirements of international touring productions, and in co-operating with
other Aspect suppliers within the worldwide network.
The controller functions as an electronic loudspeaker management system, comprising a
24dB per octave crossover, with factory preset limiters matched to the power amplifiers,
digital time-alignment and electronically balanced inputs and outputs.
A standard Aspect integrated sound system consists of:
•TA-890H mid-high enclosures
•TA-890L low frequency enclosures
•Flybars, adjustable flying chains and flybar trunk
•Loudspeaker break-outs and multi-way extensions
•Multi-way returns system
•LMS-D6 or LMS-D26 system controllers
•AMP-890 ampifier racks with:
oT-45 and T-25 power amplifiers
oThree phase 32A power distribution
OMulti-way and local speaker connections

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The Loudspeaker Management System (LMS) Concept
Turbosound Loudspeaker Management Systems are more than just electronic crossovers.
They provide full digital alignment of all components in the Aspect enclosures, to ensure
coherent acoustic output. They also incorporates a number of features which contribute to
overall system reliability and ease of setting-up.
All system parameters such as crossover frequencies, limiter settings and equalisation can be
simply called up from a factory-set menu, making it possible to maintain consistent and
repeatable system performance.
Because the power amplifiers are included as part of the Aspect system, the controllers are
able to utilise output limiters which are precisely matched to the system requirements, being
pre-set to prevent the amplifiers from clipping. Inputs and outputs are fully balanced,
providing isolation between the controller and the amplifier inputs. These factors contribute
to high reliability in the adverse circumstances often encountered under arduous touring
conditions.
LMS-D24, LMS-D26 and LMS-D6 Loudspeaker Management Systems
Use of the LMS-D2X and LMS-D6 loudspeaker management systems ensures accurate time-
alignment of the system drive units and also provides a facility for users to select additional
delay, either to compensate for physical displacement of ground-stacked bass enclosures
relative to flown high packs, or to provide full range delay for correct image localisation or
use in distributed systems. It should however be noted that the high-Q, and therefore long
throw, properties of the Aspect system generally eliminates the need for distributed delayed
systems, even for very large audiences.
Amplifier Racks
Aspect amplifier racks are fully loaded and fully equipped for the most demanding concert
touring applications. They are fitted as standard with two T-25 model amplifiers and three T-
45 model amplifiers, Socapex speaker break-outs as well as local connectors, single phase or
three phase mains distribution, and multi-way signal input and link connectors. All the
component parts are rigidly mounted in a 12U steel space frame with removeable panels,
and housed in a road case with heavy duty wheels.
Power Amplifiers
In addition to the Turbosound T-25 and T-45 model amplifiers supplied with turnkey Aspect
systems, the following other power amplifier brands provide sufficient performance and
mechanical compatibility to perform well with Aspect loudspeaker systems:

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•MC2 E series
•Lab Gruppen FP series
•Crest Pro series
•QSC Powerlight II series
Digital Controllers
In addition to the Turbosound LMS-D6 and LMS-D26 loudspeaker management systems, the
following digital crossovers have been tested and are recommended for use with Aspect
systems:
•BSS FDS366
•XTA DP224, DP226 and DP428
Aspect Loudspeaker Components
All the drive units have been designed in-house specifically for the Aspect system and are
manufactured exclusively for Turbosound. This means that they are expressly suited to their
intended purpose, and make use of innovative features to ensure premium performance.
Neodymium magnets are used throughout all drive units. This results in higher efficiency,
less power compression and reduced overall weight. Low-mid frequency drivers are
designed to be rear-facing in the enclosure, enabling the heatsink / phase plug to be placed in
the air flow to aid cooling.
TA-890L Low Frequency Enclosure
The TA-890L low frequency enclosure covers
the low frequency range from 35Hz up to 100Hz.
It contains two very high power 15" neodymium
drive units loaded with TurboBass™devices.
The TA-890L is a very compact enclosure,
identically sized to the TA-890H, and its minimal
size and low weight ensures easy handling. It is
designed to provide beneficial low frequency
coupling when used in multiples. The enclosure
may be ground-stacked or flown using its integral flying hardware.

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TSW-218 Subwoofer
The TSW-218 is designed to cover the sub and
low frequency ranges from 25Hz to 100Hz, and
can be used as part of a 5-way Aspect system in
order to reinforce sub-bass frequencies. It
utilises two custom designed neodymium 18”
drivers loaded with TurboBass™ devices. The
proprietary loading technique and horn flare
design produces significant mutual coupling
between adjacent enclosures, resulting in
sensitivity gains of up to 110dB with eight units coupled.
TA-890H Mid-high Enclosure
The TA-890H enclosure covers frequencies
above 100Hz and contains a total of five drive
units. A pair of 10” neodymium low-mid
frequency drivers loaded with TurboMid™
devices covers the frequency range from
100Hz to 400Hz. The low-mid drivers are rear-
facing in the enclosure, providing not only
additional cooling by placing the
magnet/heatsink assemblies in the path of the
airflow, but also acting as phase plugs. A
specially developed 10” low-mid driver
loaded with a LMF Polyhorn™device covers the range from 400Hz to 4kHz. The remaining
frequencies are covered by a pair of 50mm dome drivers loaded with Polyhorn™ waveguides
specifically designed for this purpose.
The TA-890H mid-high enclosure is designed to provide a precise array angle of 25º
horizontal x 15º vertical. This high Q provides the projection necessary for true long throw
applications such as large arena and outdoor productions.
The Polyhorn™and TurboMid™devices are unique to Turbosound and are covered by
principle patents world-wide. They utilise specialised forms of horn loading which provide
exceptionally low distortion and high efficiency from cone-type drive units. The subjective
effect of these devices is greater clarity and transparency of reproduction when compared
with conventional compression drivers and horns.
The TA-890H is fully equipped for all touring applications with independent flying systems.
This allows cabinets to be configured horizontally providing considerable flexibility of use.

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It includes a hinged rear access door, integral multi-way speaker cable, removable wheel
board, ergonomically placed flush handles, weatherised beech plywood construction and
optimised truck-pack dimensions. The TA-890H enclosure is exactly the same size as, and of
very similar weight to, the TA-890L.

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Transportation
TA-890 cabinets include a removable wheelboard which clips to the front of the cabinet,
allowing single units to be conveniently transported. These are designed to be stackable, so
that when not in use they can be neatly stored without taking up floor space. The
wheelboards will fit both mid-high and low frequency cabinets.
Up to three TA-890 cabinets can be stacked on a WB-
890 wheel dolly, and this allows the cabinets to be
pre-configured and locked at the warehouse using the
integral flygear. Cabinets can then be wheeled in or
out of a truck straight on to a stage area ready to be
flown. The stack is stabilised by ratchet straps which
attach to the flygear on the top cabinet and are
tightened by means of recessed levers on the wheel
dolly.
Optional heavy duty transit covers are
available for TA-890 cabinets. These
fasten at the front of the cabinet with
velcro straps.

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Aspect Flying Systems
To take full advantage of the very precise dispersion properties of the Aspect system, an
integral rigging system has been developed. The flying system is inherently safe, flexible and
simple to use, and even though it is integral to the box, it may be quickly and easily removed
for safety testing. The rigging design allows the creation of clusters and arrays that can be
assembled quickly and with a minimum number of crew, and with full control of the angles
between enclosures and of their vertical inclination, to suit a wide variety of requirements.

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FLYING AND STACKING
Overview
The Aspect system flying hardware is specifically designed to take advantage of the precise
horizontal directivity characteristics, as well as allow a wide range of adjustment of the
vertical angles between adjacent enclosures, and the overall vertical inclination of each
column of enclosures. This means that arrays can easily be optimised to suit the coverage
requirements of any situation.
Sound radiating from adjacent cabinets will successfully blend over a range of included
angles, creating a coherent point-source image, and this results in the ability to tailor both
the overall coverage and the SPL at a given distance.
The concept of arraying the TA-890 Aspect system is to create part of the surface of a sphere.
A small part of a large sphere will form a high-directivity (long-throw) system with a high
SPL at a distance, whereas a large part of a small sphere will be of lower directivity
producing less SPL at a distance, but having a wider angle of coverage. This approach leads
to the creation of a virtual point source behind the array, where sound appears to emanate
from a single point in space.
There are some simple rules to follow to help achieve this goal:
•Obtain a smooth even curve in the horizontal plane.
•Use a similar amount of tilt on each column.
•Ensure that the bottom corners of each column are in line with each other.

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GIGMATE™ ACOUSTIC SIMULATION
While the Aspect System is remarkably intuitive in terms of building arrays and aiming them,
and requires no theoretical calculations in order to achieve optimum coverage of a room or
audience space due to its inherent ‘point-and-shoot’ nature, there may well be situations
where some prior knowledge of a venue can save time in setting up and configuring the PA.
In order to aid in this process, Turbosound offers the GigMate™ software acoustic simulation
package, a version of the generic EASE Focus program that is based on current EASE 4.1
data.
GigMate™ provides an accurate elevation representation of sound pressure level and
coverage of a room, given the dimensions of the audience areas and location of available
rigging points in the venue. The database allows for flown clusters of TA-890 touring or TA-
880 trapezoidal enclosures, or for ground stacked arrays.
Setting up a Venue - Overview
The Audience Area window provides a way add or remove Audience Areas and define their
location in the space. A venue can be selected from a range of standard venue presets or set
up from scratch using the X and Y co-ordinates menus to define the location, size and angle
of the listening areas.
The PA is set up by choosing either a flown cluster or ground stack. Box count, cluster
position, tilt angle and splay angle can all be selected independently.
The mapping properties allow the user to select frequency bands from 100Hz to 10kHz and
also bandwidth from one-third octave to broadband.
Once mapped to achieve satisfactory room coverage and level, results can be saved and
printed as a .rtf file. The program will also calculate the total weight of the cluster as well as
its overall physical size.

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Running Turbosound GigMate™ / EASE Focus for the first time:
When you first start the program you must set the system file that it is to use. The installation
files include two Turbosound Aspect System files as shown below:
Select the Touring version cabinets. You will now be presented with the GigMate™ main
screen.

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The screen is split into four main areas:
System Setup
The left hand side of the screen is where you define the system, auditorium and project. Tabs
On the bottom of this window allow you to toggle between modes.
Mapping Properties
This is the main window which will display the system as configured in the System Setup
window along with the audience areas and mappings.
Audience Area
Beneath the main Mapping Properties window this graphically displays the SPL on each
audience area, or across a combination of audience areas.
Rigging
The far right window shows the detail of the system configuration and is especially useful in
larger venues where the speakers shown in the main window become very small.

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Designing a system
To design a system begin by defining the venue/audience areas by clicking on the “Audience
Area” tab in the bottom left of the screen.
Within this window you can edit or remove existing audience areas, and create new ones.
There are two methods of defining an audience area. In either case you must define the
X1/Y1 coordinate of the start of the area, you can then either enter the X2/Y2 points or its
length and angle.
As you create audience areas they are shown graphically in the main window.
The next step is to design the loudspeaker array using the “System Setup” window. Select
the “System Setup” tab in the bottom left of the screen and begin by choosing the desired
flybar or groundstack in the drop down box at the top left of the window.