EAW DSA250 User manual

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: RD0112 (C) DSA250 SPEC January 2004
DSA250 Specifications group · D
Features
•2-Way, full-range loudspeaker for voice and music applications
•Vertical coverage pattern adjustable to fit the audience area
•Integral signal processing and amplification
•Built-in electronic driver protection
•Wall Mounting hardware included
Description
The DSA250 is a unique, column-type loudspeaker for full-range
FGM (foreground music) and voice applications. It also functions
with additional DSA Series loudspeakers to provide increased
performance. For example, a DSA250 used with the DSA230
extends directivity to and increases the output at lower frequencies.
The DSA250 has the remarkable versatility of a user-adjustable,
vertical beamwidth. This is made possible because each transducer
has its own DSP (digital signal processing) and power amplifier.
Built-in networking provides for remote PC operation and control.
Intended to be flat-mounted to a wall, the user directs the DSA250's
output from this position to the desired coverage area using the
supplied DSAPilot software. Pattern asymmetry provides similar
sound levels to both near and far listeners. Each of the two inputs
has user-adjustable EQ, delay, and compression.
DSA loudspeakers are engineered as a solution for applications
with difficult acoustics, physical mounting limitations, precise
vertical coverage requirements, and difficult aesthetic
requirements. They can replace typical horn/woofer or column-type
loudspeakers in small to medium venues. These include houses of
worship, auditoriums, theaters, concert halls, conference rooms,
transportation centers, athletic facilities, classrooms, museums,
shopping malls, and theme parks. The enclosure profile and
appearance reduces architectural impact.
2-WAY FULL-RANGE DIGITALLY STEERABLE ARRAY
See TABULAR DATA notes for details
CONFIGURATION
Subsystem
Transducer Loading
LF 8x 4 in cone Direct radiating
HF 8x 1 in dome Horn loaded
Operating Mode
Amplifier Channels External Signal Proc.
Self-powered 16x high efficiency None
ACOUSTICAL PERFORMANCE
Operating Range 78 Hz to15 kHz
Nominal Beawidth Horz 120°
Vert Digitally variable
ELECTRONIC PERFORMANCE
Analog
Amplifier Output (ea) 28.3 V 50 W @ 16 ohm
Input (Audio A and B):
Configuration Balanced differential
Nominal Sensitivity 0.9 V / 1.25 dBu For full output
Maximum Signal 12.2 V / 24 dBu
Input Routing A + B, A or B, priority B over A
Digital
A to D/ D to A 48 kHz, 24 bit
Processor 32 bit dual SHARC (Super Harvard Architecture Computer)
Propagation Time 4.3 ms
INPUT SIGNAL PROCESSING
Filters
Frequency Boost/Cut Q
Parametric 10 to 24000 Hz +15/-15 dB 0.25 to 64
6 or 12 dB Lo Shelf 10 to 24000 Hz +15/-15 dB
6 or 12 dB Hi Shelf 10 to 24000 Hz +15/-15 dB
HPF and LPF 10 to 24000 Hz 12/18/24 dB/oct L-R, BW, Bessel
Compression
Threshold -40 to +24 dBu
Ratio 1.2:1 to inf:1
Attack (ms) slow (64)/med (16)/fast (2)
Release (ms) slow (256)/med (64)/fast (8)
Gain -60 dB to +10 dB
Mute on/off
Signal Delay 300 ms maximum
Meters
Input -40 to +20 dBu
Output -30 to 0 dB ref 0 dB = full output
Gain Reduction 0 dB to -60 dB (compression)
CONNECTIONS
Computer Network
Standard EIA-485
Optional CobraNet (requires EAW CM-1 Interface Card accessory)
AC Mains
Voltage / Frequency Maximum Current
DSA250 (115 V) 100 to 120 V / 50 to 60 Hz 8 A
DSA250 (230 V) 220 to 240 V / 50 to 60 Hz 4 A
ORDERING DATA
Description Part Number
DSA250 White 115 V 0005480-00
Optional Accessories
CM-1 CobraNet Interface Card 0005987
DSA Fly-Bar Kit 0007445
DSA Enclosure Connecting Kit 0007446

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: RD0112 (C) DSA250 SPEC January 2004
DSA250 Specifications group · D
ENCLOSURE
Material Rear: extruded aluminum, Front baffle: PVC
Finish Powder-coated white
Grille Powder-coated perforated steel
50.80
26.00
50.80
CABINET/FINISHED/WHITE/DSA250/230 V
CABINET/FINISHED/WHITE/DSA250/115 V
PRODUCTION
DESCRIPTION
RIGHT SIDE
DIMENSIONS APPLY
TO BOTH SIDES
9.34
9.32
0005670-01
INPUT PANEL
POWER END
BOTTOM
GRILLE PARTIALLY SHOWNGRILLE PARTIALLY SHOWN
0005670-00
DRAWING NO.
FRONT
230 V
DSA250
EASTERN ACOUSTIC W ORKS
BACK
115 V
VOLTAGE
2X 14°
NOTES:
1. SYMBOL INDICATES CENTER OF BALANCE.
2. WEIGHT APPROX. 84 LB.
3. SHIPPING WEIGHT APPROX. 100 LB.
2X 20°
INPUT PANEL
SIGNAL END
5.88
TOP
L
C
LED
NOTE: This drawing has been reduced. Do not scale.

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: RD0112 (C) DSA250 SPEC January 2004
DSA250 Specifications group · D
PERFORMANCE DATA See NOTES GRAPHIC DATA Notes for details
The DSA250’s acoustical performance varies with the steering and beamwidth settings as well as
whether it is used singly or in clusters with other DSA loudspeakers. Thus, it is not possible to
characterize its acoustic performance with the normal, single graphs.
For representative Performance Data, see the included: “DSA Series Performance Matrix”.

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: RD0112 (C) DSA250 SPEC January 2004
DSA250 Specifications group · D
INPUT PANEL
POWER END
SIGNAL END
F
U
S
E
F
U
S
E
~100-120VAC / 50-60Hz / 200W
T8A 250V
NOTES
TABULAR DATA
1. Primary Measurement/Data Processing System: FChart: proprietary EAW software.
2. Secondary Measurement System: Brüel & Kjær 2012.
3. Microphone Systems: Earthworks M30; Brüel & Kjær 4133
4. Measurements: Dual channel FFT; length: 32 768 samples; sample rate: 48 kHz; logarithmic sine wave sweep.
5. Measurement System Qualification (includes all uncertainties):SPL: accuracy +/-0.2 dB @ 1 kHz, precision +/-0.5 dB 20 Hz to 20 kHz, resolution 0.05 dB; Frequency: accuracy +/-1 %,
precision +/-0.1 Hz, resolution the larger of 1.5 Hz or 1/48 octave; Time: accuracy +/-10.4 µs, precision +/-0.5 µs, resolution 10.4 µs; Angular: accuracy +/-1°, precision +/-0.5°, resolution 0.5°.
6. Environment: Measurements time-windowed and processed to eliminate room effects, approximating an anechoic environment. Data processed as anechoic or fractional space, as noted.
7. Measurement Distance: 7.6 to 8.0 m. Data is referenced to other distances using the Inverse Square Law.
8. Volts: Measured rms value of the test signal.
9. Watts: Per audio industry practice, “loudspeaker watts” are calculated as voltage squared divided by rated nominal impedance. Thus, these are not True Watt units of energy as defined by
International Standard.
10. SPL: (Sound Pressure Level) Equivalent to the average level of a signal referenced to 0 dB SPL = 20 microPascals.
11. Subsystem: This lists the transducer(s) and their acoustic loading for each passband. Sub = Subwoofer, LF = Low Frequency, MF = Mid Frequency, HF = High Frequency.
12. Operating Mode: User selectable configurations. Between system elements, a comma (,) = separate amplifier channels; a slash (/) = single amplifier channel. DSP = Digital Signal Processor.
IMPORTANT: To achieve the specified performance, the listed external signal processing must be used with EAW-provided settings.
13. Operating Range: Range where the processed Frequency Response stays within -10 dB SPL of the power averaged SPL within this range; measured on the geometric axis. Narrow band
dips are excepted.
14. Nominal Beamwidth: Design angle for the -6 dB SPL points, referenced to 0 dB SPL as the highest level.
15. Axial Sensitivity: Power averaged SPL over the Operating Range with an input voltage that would produce 1 W at the nominal impedance; measured with no external processing on the
geometric axis, referenced to 1 m.
16. Peak Sensitivity: Highest axial SPL measured within the 20 Hz to 20 kHz bandpass with an input voltage that would produce 1 W at the nominal impedance; measured with no external
processing on the geometric axis, referenced to 1 m.
17. Nominal Impedance: Selected 4, 8, or 16 ohm resistance such that the minimum impedance point is no more than 20% below this resistance over the Operating Range.
18. Accelerated Life Test: Maximum test input voltage applied with an EIA-426B defined spectrum; measured with recommended signal processing and Recommended Protection Filter.
19. Calculated Axial Output Limit: Highest average and peak SPLs possible during the Accelerated Life Test. The Peak SPL represents the 2:1 (6 dB) crest factor of the Life Test signal.
20. Recommended High Pass Filter: This should be used to help protect the loudspeaker from excessive input signal levels below the Operating Range.
GRAPHIC DATA
1. Resolution: To remove insignificant fine details, 1/12 octave cepstral smoothing was applied to acoustic frequency response and 1/3 octave cepstral smoothing was applied to the
beamwidth and impedance data. Other graphs are plotted using raw data.
2. Frequency Responses: The variation in acoustic output level with frequency for a constant input signal of 2 volts (4 ohm nominal impedance), 2.83 volts (8 ohm nominal impedance),
or 4 volts (16 ohm nominal impedance) referenced to a distance of 1 m. For processed systems, this applies where the processor gain is 0 dB in the Processor Frequency Response graph.
3. Processor Response: The variation in output level with frequency for a constant input signal of 0.775 V = 0 dB reference.
4. Beamwidth: Average angle for each 1/3 octave frequency band where, starting from the rear of the loudspeaker, the output first reaches -6 dB SPL referenced to 0 dB SPL as the highest
level. This method means the output may drop below -6 dB SPL within the beamwidth angle. Referenced to 20 m.
5. Impedance: Variation in impedance magnitude, in ohms, with frequency without regard to voltage/current phase. This means the impedance values may not
be used to calculate True Watts (see 9 above).
USER
DSP
INPUT A
INPUT B USER
DSP
AMP HF DSP
AMP HF DSP
AMP LF
DSP
AMP LF
DSP
EIA-485
AC MAINS
2-WAY SELF-POWERED
6 ADDITIONAL
DSP/AMP/HF
6 ADDITIONAL
DSP/AMP/LF
SIGNAL DIAGRAM
LEGEND
DSP: Digital Signal Processing for EQ, limiting, and delay.
LF/MF/HF: Low Frequency / Mid Frequency / High Frequency.
PWR AMP: Power Amplifier.
ΣΣ:Summing Amplifier

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: RD0112 (C) DSA250 SPEC January 2004
DSA250 Specifications group · D
NOTES
1. Beamwidth and Frequency data is referenced to 20 m on axis, including air losses; steering at 0 degrees.
2. Beamwith Range is where the pattern widens to more than 1.5 times nominal below the low frequency and narrows to less than 0.67 times nominal above the high frequency.
3. Avg SPL Limits are referenced to 1 m at an output equivalent to 0.5 times rated amplifier power at nominal impedance.
4. Peak SPL Limits are reference to 1 m at an output equivalent to maximum peak amplifier power at nominal impedance.
Cluster
Height (in/mm)
Width (in/mm)
Depth (in/mm)
Weight (in/mm)
Nominal Horizontal Beamwidth
Beamwidth Range
Beamwidth Range
Frequency Range (+/- 3 dB tolerance)
Operating Range (-10 dB frequencies)
SPL Limit (avg)
SPL Limit (peak)
Beamwidth Range
Frequency Range (+/- 3 dB tolerance)
Operating Range (-10 dB frequencies)
SPL Limit (avg)
SPL Limit (peak)
Beamwidth Range
Frequency Range (+/- 3 dB tolerance)
Operating Range (-10 dB frequencies)
SPL Limit (avg)
SPL Limit (peak)
Beamwidth Range
Frequency Range (+/- 3 dB tolerance)
Operating Range (-10 dB frequencies)
SPL Limit (avg)
SPL Limit (peak)
DSA230
36.5/927
9.3/237
9.3/237
62/28.1
120
800 Hz to 4.5 kHz
1 kHz to 8 kHz
90 Hz to 6.5 kHz
78 Hz to 10 kHz
116.0
122.0
500 Hz to 10 kHz
90 Hz to 6.5 kHz
78 Hz to 10 kHz
115.6
121.6
300 Hz to 10 kHz
90 Hz to 8.2 kHz
78 Hz to 10 kHz
114.2
120.2
225 Hz to 5.5 kHz
90 Hz to 8.2 kHz
78 Hz to 10 kHz
113.1
119.1
DSA250
50.8/1290
9.3/237
9.3/237
84/38.1
120
800 Hz to 10 kHz
1 kHz to 15 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
117.2
123.2
500 Hz to 15 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
116.2
122.2
300 Hz to 15 kHz
90 Hz to 13 kHz
78 Hz 15 kHz
115.5
121.1
225 Hz to 10 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
114.1
120.1
DSA230 / DSA250
87.6/2224
9.3/237
9.3/237
146/66.2
120
800 Hz to 10 kHz
400 Hz to 15 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
123.4
129.4
200 Hz to 15 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
121.7
127.7
135 Hz to 10 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
119.9
125.9
110 Hz to 10 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
118.3
124.3
DSA230 / DSA230 / DSA250
124.3/3158
9.3/237
9.3/237
208/94.3
120
800 Hz to 10 kHz
270 Hz to 15 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
126.5
132.5
130 Hz to 15 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
124.1
130.1
90 Hz to 10 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
120.8
126.8
80 Hz to 10 kHz
90 Hz to 13 kHz
78 Hz to 15 kHz
119.7
125.7
20° NOMINAL VERTICAL BEAMWIDTH
40° NOMINAL VERTICAL BEAMWIDTH
60° NOMINAL VERTICAL BEAMWIDTH
80° NOMINAL VERTICAL BEAMWIDTH
DSA SERIES PERFORMANCE MATRIX

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: RD0112 (C) DSA250 SPEC January 2004
DSA250 Specifications group · D
HORIZONTAL
VERTICAL
STEERING ANGLES
+15°
0°
-15°
-30°
-45°
Referenced to 20 m, 1/3 octave smoothing, 5° resolution, 1 dB / division
DSA250 1/3 OCTAVE POLAR RESPONSES: 40° Vertical Beamwidth
315 / 400 / 500 / 630 Hz 800 / 1000 / 1250 / 1500 Hz 2000 / 2500 / 3150 / 4000 Hz 5000 / 6300 / 8000 / 10000 Hz
(brown / blue / green / red)