datasheet
TA-890H
ASPECT SERIES ENGINEERING INFORMATION
FEATURES
Total system optimisation
Very high SPL
Arrayable enclosure
Integral flyware
Rotatable mid-high section
Optimised truck pack
Very compact enclosures
Seamless arrayability
APPLICATIONS
Stadia and arenas
Touring and festivals
Regional concert touring
Theatre and Corporate
Dance clubs
The Aspect series is a range of high performance
modular loudspeaker enclosures designed for use
across a wide spectrum of sound reinforcement
activities, easily scaleable to specific acoustical and
venue requirements ranging from large scale indoor or
outdoor concerts to corporate events, theatre shows
and nightclub applications.
The aim of any sound reinforcement system is
to distribute sound evenly, with consistent
frequency response and in a predictable way,
across all seats of an auditorium or listening
area. An optimum method of attaining this goal
is through the correct application of point
source arrays to create a segment of a spherical
wavefront. Not only does this approach provide
an exceptionally well defined and coherent
acoustic source, but it also allows for
considerable flexibility when assembling arrays
in both horizontal and vertical dimensions.
In practice, the dispersion characteristics of a
typical sound system are less than ideal because
of the tendency for conventional high frequency
exponential horns to ‘beam’ with increasing
frequency. When arraying such horns,
interference between adjacent sources is inevitable
due to the variable curvature of the wavefront
caused by the horn's geometry, and this results
in undesirable comb filtering effects.
Turbosound engineers, through intensive
research and the subsequent implementation of
innovative and patented Polyhorn™ designs,
have identified and overcome these deficiencies
and implemented solutions in the Turbosound
Aspect series. Fundamental to the Polyhorn™
designs—and applied in both high-mid and high
frequency bands—is the principle of dividing an
exponential horn flare into a multiplicity of
tapered waveguides. Doing so ensures that all
path lengths from the diaphragm surface to
horn mouth are identical, and consequently
guarantees uniformity of phase of the wavefront
at the horn mouth. The Polyhorn™ design
effectively locates the acoustic centre well
behind the motor system, forming a virtual
point source whose radius coincides with the
array curvature without requiring an excessively
deep enclosure.
The TA-890H is a portable mid-high enclosure
designed for flown and ground stacked touring
applications. It houses high frequency, high-mid
frequency and low-mid frequency elements
arranged in a vertical orientation, and covering
the frequency range from 100Hz to 20kHz.
The top section of the enclosure is dedicated to
handling the high frequency band above 5kHz,
being reproduced by two custom-designed HF
drivers loaded by a high frequency Polyhorn™
device. The HF driver combines highly
innovative patented design features to ensure
exceptional high frequency performance and
long term reliability. High-mid frequencies from
450Hz to 5kHz are handled by a proprietary 10”
HMF drive unit on a further Polyhorn™ device
optimised for high-mid frequencies. Two 10”
low-mid frequency drivers loaded with
TurboMid™ devices cover the remaining
frequency range from 450Hz down to 100Hz.
A key feature of the Polyhorn™ designs is the
very sharp cut-off at the edges of the coverage
pattern, which all but eliminates the comb
filtering effects commonly experienced between
adjacent sources when arraying conventional
horn designs. This makes it possible to achieve
seamless arrayability in a very intuitive and
predictable fashion.
Significant improvements in the individual
drivers' power handling, and a subsequent
reduction in power compression, have also
been achieved through the use of high stability,
high temperature neodymium magnet
ASPECT SERIES ENGINEERING INFORMATION
page 2
structures. These provide very high motor strength—and
hence fast transient response—as well as exceptional thermal
performance. This means that more of the available amplifier
power is converted into acoustic energy and less power is
wasted as heat. A useful reduction in net weight is also
achieved which aids in moving and handling.
The TA-890H is a fully equipped modular touring cabinet with
integral flying systems for both horizontal and vertical
configurations. The mid-high section is square and
symmetrical, and it can be removed and rotated through 90°
to allow boxes to be flown in either orientation while
maintaining the required coverage pattern. This means that
only one type of mid-high enclosure is needed form part of a
large rental inventory flexible enough to meet widely varying
venue requirements.
The cabinet dimensions have been carefully chosen to allow
the boxes to be optimally truck packed in the most common
US and European vehicles without wasted space. As well as
providing individual wheel dollies with each enclosure, it is
also possible to pre-stack up to four cabinets on an optional
dolly for easy loading in to venues equipped with ramps.
The TA-890H is fitted with two completely independent flying
systems. The ‘A’ (or horizontal box) flying system consists of
integral flygear, rebated into the cabinet surfaces, which mate
with the cabinets above and below and provide a choice of
four optimised vertical inter-cabinet angles. These angles are
set incrementally by an interlocking mechanism which
provides visual indication of the chosen angle, even from a
distance. The ‘B’ (or vertical box) flying system allows the
cabinets to be flown with a vertical orientation and consists
of integral steelwork again offering a choice of inter-cabinet
angles. Both ‘A’ and ‘B’ flying systems are fitted to TA-890H
mid-high and TA-890L low frequency boxes as standard,
enabling both mid-high and bass cabinets to be flown and
integrated together in a cluster.
The cabinet is also fitted with interlocking corner mouldings.
These aid in aligning boxes when they are ground stacked or
loaded on a 4-up wheel dolly. A Speakon NL8MP is fitted to
the rear access door, as well as a break-out cable fitted with a
NL8FC for connection to additional mid-high cabinets.
KEY FEATURES
• Tight dispersion pattern of 25°h x 15°v generates highly
focused coverage pattern with exceptional projection
• Patented Polyhorns™ generates equal level across a
uniformly curved wavefront identical to the array profile
• Proprietary HF and HMF transducers employ high stability,
high temperature radial neodymium magnet structures which
offers much higher efficiency, as well as reduced weight
• Directivity over 1kHz exhibits very sharp cut-off at the
pattern edges, dramatically reducing out-of-band signal
• Unique 10" high-mid frequency driver is fabricated from a
single-piece spun aluminium bowl, serving as a high strength
frame, heatsink, rear compression chamber and high pass
filter
• Low-mid enclosure employs rear-facing drivers with
combined heatsink/phase plug assemblies
• Revolutionary composite cone materials are used in all cone
transducers
• Mid-high cabinet construction based on pre-bent 15mm
plywood, greatly increasing cabinet strength.
• Flying hardware is integral to the box and can be quickly
removed for safety testing; allows cabinets to be safely and
securely ground stacked
• Cabinet dimensions are optimised for both US and
European vehicle truck pack arrangements
KEY SYSTEM BENEFITS
• Minimised destructive interference between adjacent
enclosures, effectively giving seamless arrayability in both
horizontal and vertical planes
• Intuitive 'point and shoot' characteristics make it very easy
to adapt flown or ground stacked clusters to widely variable
venue and audience requirements
• Very high power capability and proved driver efficiency
means that maximum sound pressure levels of up to 146dB
(peak) are easily achievable from one cabinet
• Greatly improved thermal performance reduces power
compression to negligible levels
• Smaller and uniformly sized enclosures simplifies handling,
transportation and flying
• Flexible cabinet orientation allows array optimisation and
makes the best use of venue sightlines
datasheet
TA-890H
datasheet
TA-890H
ASPECT SERIES ENGINEERING INFORMATION
page 3
ASPECT SERIES ENGINEERING INFORMATION
page 4
DIMENSIONS (HXWXD)
NET WEIGHT
COMPONENTS
FREQUENCY RESPONSE
1
DISPERSION
POWER HANDLING
SENSITIVITY
3
MAXIMUM SPL
CROSSOVER BANDS
NOMINAL IMPEDANCE
CONSTRUCTION
GRILLE
CONNECTORS
OPTIONS
SPARES AND
ACCESSORIES
795mm x 477mm x 574mm (31.3” x 18.8" x 22.6")
76kg (167lbs)
2 x 10” (254mm) LMF drivers, 1 x 10” (254mm) HMF driver on a midrange Polyhorn™
2 x HF drivers on a high frequency Polyhorn™
95Hz - 20kHz ±4dB
25°H x 15°V
LMF: 500 watts r.m.s., 1000 watts program
HMF: 200 watts r.m.s., 400 watts program
HF: 100 watts r.m.s., 200 watts program
LMF: 107dB; HMF: 114dB; HF: 111dB
140dB continuous4, 146dB peak
5
LMF: 101Hz–405Hz, HMF: 405Hz–4kHz, HF: 5k99Hz–20kHz
LMF: 8 ohms; HMF: 16 ohms; HF: 12 ohms
15mm (5/8”) beech plywood throughout; rebated, screwed and glued. Finished in black semi-
matt textured paint. Four recessed carrying handles
Cloth/expanded metal
2 x Neutrik Speakon NL8 wired: pin1+: linked internally; pin1-: linked internally; pin 2+: LMF
positive; pin 2-: LMF negative; pin3+: HMF positive; pin 3-: HMF negative; pin4+: HF positive;
pin 4-: HF negative
Wheel dolly for four cabinets
MG-890 Replacement cloth/expanded metal grille
LS-1022 10” (254mm) LMF loudspeaker
RC-1022 Recone kit for LS-1022
RC-1021 Recone kit for LS-1021
LS-1021 10” (254mm) HMF loudspeaker
CD-112 25mm HF driver
RD-112 Replacement diaphragm for CD-112
Notes
1
Measured on axis
2
Average over stated bandwidth
3
Average over stated bandwidth
4
Unweighted diode-clipped pink noise. Measured in a half space environment.
5
Verified by subjective listening tests of familiar program material, before the onset of perceived signal
degradation.
datasheet
TA-890H
datasheet
TA-890H
ASPECT SERIES ENGINEERING INFORMATION
page 5
HIGH FREQUENCY
RESPONSE
HIGH-MID FREQUENCY
RESPONSE
LOW-MID FREQUENCY
RESPONSE
NOTES ON
MEASUREMENT
CONDITIONS
Impedance A constant current circuit was used to measure the impedance. Frequency response The frequency response
shown was obtained by feeding a swept sine wave through the system in a half space environment. The position of the
microphone was vertically on-axis at a distance of 2 metres, then scaled to represent 1 metre. 2nd & 3rd Harmonic Distortion
Distortion measurements were obtained using an Audio Precision harmonic distortion analysis system and comply with
AES recommendations for enclosure measurement (AES paper ANSI S4-26-1984). Data Conversion All graphs were digitally
generated using the APEX custom software system, designed to translate data derived from Audio Precision ‘System
One’ test equipment into AutoCAD™. This program enables graphical information to be plotted to a high degree of
accuracy.
130
Ref.
Distortion %
1.0%
0.2%
0.1%
Ref.
Distortion %
120
110
100
90
80
Sound Pressure Level in dB
70
60
20 Hz
130
120
110
100 1 kHz 10 20
50 200 500 2 5
Frequency
Sensitivity
1W/1M
Fundamental
10% Power
Fundamental
10% Power
Sensitivity
1W/1M
2nd Harmonic
10% Power
3rd Harmonic
10% Power
100
90
1.0%
80
Sound Pressure Level in dB
70
60
20 Hz
130
120
110
100
90
80
100 1 kHz 10 20
50 200 500 2 5
Fundamental
10% Power
Sensitivity
1W/1M
Sound Pressure Level in dB
70
60
20 Hz
100 1 kHz 10 20
50 200 500 2 5
2nd Harmonic
10% Power
3rd Harmonic
10% Power
Frequency
2nd Harmonic
10% Power
3rd Harmonic
10% Power
Frequency
0.2%
0.1%
Ref.
Distortion %
1.0%
0.2%
0.1%
ASPECT SERIES ENGINEERING INFORMATION
page 6
HIGH FREQUENCY
IMPEDANCE
HIGH-MID
IMPEDANCE
LOW-MID IMPEDANCE
datasheet
TA-890H
Impedance A common method, constant current circuit was use to measure the impedance. Frequency Response The
frequency response shown was obtained by feeding a swept sine wave through the system in a half-space environment.
The position of the microphone was vertically on-axis, horizontally in-line with the MF/HF section at a distance of 3
metres, then scaled to represent 1 metre. 2nd & 3rd Harmonic Distortion Distortion measurements were obtained using an
Audio Precision harmonic distortion analysis system and comply with AES recommendations for enclosure measurement
(AES Paper reference: ANSI S4-26-1984). Data Conversion All graphs were digitally generated using the APEX custom
software system, designed to translate data derived from Brüel & Kjæl and Audio Precision “System One” test
equipment into AutoCAD™. This program enables graphical information to be plotted to an accuracy of more than four
decimal places.
NOTES ON
MEASUREMENT
CONDITIONS
100 1 kHz 10 20
Frequency
1
2
4
8
10
100
200
16
200 500 2 550
300
20 Hz
100 1 kHz 10 20
Ohms
Frequency
1
2
4
8
10
100
200
16
200 500 2 550
300
20 Hz
100 1 kHz 10 20
Ohms
Frequency
1
2
4
8
10
100
200
16
200 500 2 550
300
20 Hz
page 7
datasheet
TA-890H
ASPECT SERIES ENGINEERING INFORMATION
HORIZONTAL THIRD
OCTAVE POLARS
330°
300°
10
010203040
270°
240°
315 Hz
400 Hz
500 Hz
300°
210°
330°
0°
0°
180°
3020100
40
30°
60°
120°
150°
30°
60°
300°
90°
10
10
270°
240°
630 Hz
800 Hz
300°
330°
010203040
210°
1 kHz
330°
0°
40
180°
0°
30°
3020100
150°
30°
60°
60°
120°
90°
10
10
010203040
270°
240°
10
270°
1.25 kHz
1.6 kHz
300°
240°
5 kHz
6.3 kHz
8 kHz
210°
2 kHz
330°
010203040
210°
0°
180°
180°
3020100
40
3020100
40
60°
120°
120°
90°
10
90°
10
90°
10
10
010203040
270°
120°
150°
30°
60°
120°
150°
240°
2.5 kHz
3.15 kHz
4 kHz
300°
90°
10
10
010203040
270°
240°
10 kHz
12.5 kHz
16 kHz
210°
0°
330°
210°
180°
180°
3020100
40
3020100
40
150°
30°
150°
page 8
datasheet
TA-890H
ASPECT SERIES ENGINEERING INFORMATION
VERTICAL THIRD
OCTAVE POLARS
330°
300°
10
010203040
270°
240°
315 Hz
400 Hz
500 Hz
300°
210°
330°
0°
180°
0°
3020100
40
30°
30°
150°
60°
60°
120°
300°
90°
10
10
010203040
270°
240°
630 Hz
800 Hz
1 kHz
300°
330°
210°
330°
0°
180°
0°
3020100
40
30°
60°
90°
10
120°
150°
30°
60°
10
010203040
270°
240°
10
270°
1.25 kHz
1.6 kHz
300°
240°
5 kHz
6.3 kHz
8 kHz
210°
2 kHz
330°
010203040
210°
180°
0°
180°
3020100
40
3020100
40
30°
150°
150°
60°
120°
120°
90°
10
10
010203040
270°
240°
2.5 kHz
3.15 kHz
4 kHz
300°
90°
10
10
010203040
270°
240°
10 kHz
12.5 kHz
16 kHz
210°
330°
210°
180°
0°
180°
3020100
40
3020100
40
90°
10
120°
150°
30°
60°
90°
10
120°
150°
datasheet
TA-890H
ASPECT SERIES ENGINEERING INFORMATION
TURBOSOUND Ltd Star Road Partridge Green West Sussex RH13 8RY England
tel: +44 (0) 1403 711447 fax: +44 (0) 1403 710155 • www.turbosound.com
TA-890H Version 1.2 12/07
© Turbosound 2005
ARCHITECTURAL
& ENGINEER’S
SPECIFICATIONS
DIMENSIONS
The loudspeaker system shall be of the tri-amped, three way active type, consisting of two
10” low-mid frequency drivers loaded with TurboMid™ devices, one 10” high-mid driver on
an HMF Polyhorn™, and two HF drivers on an HF Polyhorn™. Performance specifications of a
typical production unit shall meet or exceed the following: Frequency response, measured
with swept sine wave input, shall be flat within ±4dB from 95Hz - 20kHz. Nominal impedance
shall be: LMF: 8 ohms, HMF: 16 ohms, HF: 12 ohms. Power handing shall be LMF: 500 watts
r.m.s., 1000 watts program; HMF: 200 watts r.m.s., 400 watts program; HF: 100 watts r.m.s.,
200 watts program. Sensitivity, measured with 1 watt input at 1 metre distance on axis, mean
averaged over stated bandwidth, shall be LMF: 107dB, HMF: 114dB, HF: 111dB. Maximum
SPL (peak), measured with music program input at stated amplifier power shall be 146dB.
Dimensions: 795mmH x 477mmW x 574D (31.3” x 18.8” x 22.6”). Weight: 76 kg (167 lbs). The
loudspeaker system shall be the Turbosound TA-890H. No other loudspeaker system shall be
acceptable unless submitted data from an independent test laboratory verify that the above
combined performance/size specifications are equalled or exceeded.
574mm
[22.6"]
TOP
795mm
[31.3"]
477mm
[18.8"]
SIDE REAR
FRONT
SIDE
BOTTOM
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