EAW SB850zR 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. PRELIMINARY January 2004
SB850zR Specifications group · S
preliminary
FEATURES
• Dual 18 in subwoofer
• SB1000 performance in an 850 format enclosure
• Stacking enclosure without fly-track hardware
• Companion to KF850z full-range
DESCRIPTION
The SB850zR incorporates recently developed advances in
loudspeaker technology and performance by EAW Engineers. A
deeper enclosure was designed to allow use of the same driver used
in the legendary SB1000. This significantly enhances the SB850zR
performance, providing the same high impact and low frequency
response of the SB1000 but in an enclosure footprint matched to the
KF850z. The "z" enclosures incorporate a stacking pad on top that
mates with a recess in the bottoms. This facilitates stacking the
SB850zR with the KF850z.
SB850zR DSP processor settings are available online for EAW's
MX8750 as well a select group of other popular touring processors.
DSP settings have been engineered to acoustically integrate the
SB850zR with the KF850z.
SB850 applications continue to include: concert tours, corporate
events, large theaters, stadiums, cathedrals, large live music clubs.
Six year warranty.
DUAL 18-IN SUBWOOFER
See TABULAR DATA notes for details
CONFIGURATION
Subsystem
Transducer Loading
Sub 2x 18 in cone Vented
Operating Mode
Amplifier Channels External Signal Processing
Single amp LF1/LF2 DSP w/1-way filters
Dual amp LF1, LF2 DSP w/1-way filters
PERFORMANCE 1
Operating Range 30 Hz to 150 Hz
Nominal Beamwidth
Horz 360°
Vert 360°
Axial Sensitivity (whole space SPL)
LF1/LF2 100 dB 30 Hz to 150 Hz
Peak Sensitivity (whole space SPL)
LF1/LF2 109 dB 20 Hz to 20 kHz
Input Impedance (ohms)
Nominal Minimum
LF1/LF2 4 4.1 @ 33 Hz & 130 Hz
LF1, LF2 8 8.2 @ 33 Hz & 130 Hz
Recommended High Pass Filter
High Pass =>20 Hz, 24 dB/octave Butterworth
Accelerated Life Test 2
LF1/LF2 89 V 2000 W @ 4 ohm
LF1, LF2 89 V each 1000 W each @ 8 ohm
Calculated Axial Output Limit (whole space SPL)
Average Peak
LF1/LF2 133 dB 139 dB
ORDERING DATA
Description Part Number
SB850zR Black 0006816
Optional Accessories
KF850z/SB850z caster pallet 0007683
KF850z/SB850z caster pallet kit 0008835
1To achieve specified performance, the listed external signal processing with EAW-provided settings is required.
2For recommendations to select power amplifier size refer to : “HOW MUCHAMPLIFIER POWER DO I NEED?” on the EAW web site.

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. PRELIMINARY January 2004
SB850zR Specifications group · S
preliminary
ENCLOSURE
Material Baltic birch plywood
Finish Wear resistant textured black paint
Grille Powder-coated perforated steel
NOTES:
1. SYMBOL INDICATES CENTER OF BALANCE. 2. WEIGHT APPROX. 184 LB. 3 SHIPPING WEIGHT APPROX. 206 LB.
8X HANDLE
2X 22.15
VIEW A-A
DIMENSIONS APPLY TO
BOTH SIDES
2X 27.60
42.38
42.00
2X 3.60
4X10.81
GRILLE PARTIALLY SHOWN
PALLET RECESS
BOTTOM ONLY
4.25
8.38 9.50
L
BOTTOM
C
FRONT
29.36
STACK PAD
9.25
4.00
19°
8.50
26.31
11.75
TOP
(16.36) A
L
C
4X 6.44
2X 5.27
A
15.28
INPUT
6.63
3.63
SB850zR
PRODUCTION
20.75
BACK
EASTERN ACOUSTIC WORKS
L
C
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. PRELIMINARY January 2004
SB850zR Specifications group · S
preliminary
PERFORMANCE DATA See NOTES GRAPHIC DATA Notes for details
Frequency Response: Processed Single-amplified
LF = green
SPL (dB)
Frequency Response: Unprocessed: LF1/LF2
LF = green
SPL (dB)
Frequency Response: Digital Signal Processor
LF = green
dB re 0.775 V
Impedance Magnitude: LF1/LF2
LF = green
Ohms
120
110
100
90
80
70
60
100
10
1
10 100 1000 20000
Frequency (Hz)
120
110
100
90
80
70
60
20
10
0
-10
-20
-30
-40
10 100 1000 20000
Frequency (Hz)
10 100 1000 20000
Frequency (Hz)
10 100 1000 20000
Frequency (Hz)

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. PRELIMINARY January 2004
SB850zR Specifications group · S
preliminary
INPUT PANEL
SB850zR
WHITINSVILLE, MA USA S/N
PIN 1--...LF1--
PIN 1+...LF+
PIN 2--...LF2--
PIN 2+...LF2+
NEUTRIK
NL 4 MPR
NEUTRIK
NL 4 MPR
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-widowed 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 smoothng 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).
DSP
EQ
LPF
1-Way, Single-Amp (LF1/LF2)
LF
AMP
LF
DSP
EQ
LPF
AMP
1-Way, Dual-Amp (LF1, LF2)
LF
AMP LF
SIGNAL DIAGRAM
LEGEND
DSP: User-supplied Digital Signal Processor for EQ, crossover, and delay.
HPF: High Pass Filter for crossover or Recommended High Pass Filter.
LPF: Low Pass Filter for crossover.
LF/MF/HF: Low Frequency / Mid Frequency / High Frequency.
AMP: User-supplied Power Amplifier.
XVR: Passive LPFs, HPFs, and EQ integral to the loudspeaker.