QX118_SPECS_revA
QX118 Specifications
group • S
18 INCH SUBWOOFER
See NOTES TABULAR DATA for details, half space = floor-mounted
CONFIGURATION
Subsystem:
Transducer
SUB 1× 18 in cone
Loading
Vented
Operating Mode:
Amplifier Channels
Single-amp LF
External Signal Processing
DSP w/1-way filter
PERFORMANCE
Operating Range:
30 Hz to 150 Hz
Nominal Beamwidth:
Horz 360°
Vert 360°
Axial Sensitivity (SPL):
LF (whole space) 94 dB
(half space) 100 dB
30 Hz to 150 Hz
30 Hz to 150 Hz
Input Impedance (ohms)
Nominal
LF 8
Minimum
7.1 @ 150 Hz
High Pass Filter
High Pass =>30 Hz, 24 dB/octave Butterworth
Accelerated Life Test
System
FEATURES
• QX Companion Sub
LF 80 V
Calculated Axial Output Limit (SPL)
Average
LF (whole space) 123 dB
(half space) 129 dB
800 W @ 8 ohm
Peak
129 dB
135 dB
ORDERING DATA
• Installation Flexability
Description
Part Number
2035610
APPLICATIONS
EAW QX118 18 inch Subwoofer Black
Optional Accessories
Houses of worship, arenas, outdoor stadiums, performing arts venues, Adapter Bracket QX BLK [ACC-ABQX]
Weather Protection Shield QX BLK [ACC-WPSQX]
theaters and clubs
U-Bracket Horizontal QX BLK [UBKT-QXH]
2036437
2036515
2036568
DESCRIPTION
The QX118 is the companion subwoofer for QX Series loudspeakers.
Designed to extend the low frequency response of QX arrays to
30 Hz, this compact subwoofer features a high power 18” producing an
exceptional amount of output. While the operating range is specified
to 150 Hz when used with full-range QX products, the QX118 is
capable of extended response to serve as an LF subsystem for MF/HF
loudspeakers.
The barrier strip input connector for the QX118 has a second set of
“loop thru” terminals for connecting an additional QX118.
Six year warranty.
Eastern Acoustic Works • One Main Street • Whitinsville, MA 01588 • tel 800 992 5013 / 508 234 6158 • fax 508 234 8251 • www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice.
Part Number: RD0521 A00
March 2011
A
B
C
40°
B
B
605.4
[23.83]
55.1
[2.17]
710.2
[27.96]
Eastern Acoustic Works • One Main Street • Whitinsville, MA 01588 • tel 800 992 5013 / 508 234 6158 • fax 508 234 8251 • www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice.
Part Number: RD0521 A00
1
2
276.9
[10.90]
372.4
[14.66]
A
VIEW A-A
152.4
[6.00]
3
THE INFORMATION CONTAINED
HEREIN IS PROPRIETARY AND
CONFIDENTIAL PROPERTY OF
LOUD TECHNOLOGIES, INC.
ALL RIGHTS RESERVED
THIRD ANGLE PROJECTION
3
DIMENSIONS ACROSS CENTERLINES
TO BE SYMMETRICAL
TSC = THEORETICAL SHARP CORNER
(X.XX) = REF DIMS
NO TOLERANCE IMPLIED
TOLERANCE IN MILLIMETERS
LINEAR ± 3.3 mm / ± 0.13 in
ANGLES ± 1°
UNLESS OTHERWISE SPECIFIED:
ALL DIMENSIONS ARE IN MILLIMETERS
DUAL [INCHES] DIMENSIONS
FOR REF ONLY
4
A
www.eaw.com
BACK
9/29/10
DATE
4
A
B
C
PRO ENGINEER
A
REVISION:
0.040
SCALE:
2035611-CD
SHEET 1 OF 2
DRAWING NUMBER:
A
DWG CUSTOMER QX118
[MECHANICAL SPECIFICATION]
TITLE:
ACCESS
PANEL
INPUT
17.8
[0.70]
QX118
ECOWHT6873
REV CHANGE NUMBER
55.1
[2.17]
DIMENSIONS APPLY TO BOTH SIDES
RIGHT SIDE
311.3
[12.26]
421.8
[16.61]
A
VIEW B-B
152.4
[6.00]
311.3 559.5
[12.26] [22.03]
276.9
[10.90]
559.5
[22.03]
2
NOTES:
1. SYMBOL
INDICATES CENTER OF BALANCE.
2. SYMBOL
INDICATES MOUNTING POINT,
3/8-16THREADED HOLE.
3. WEIGHT APPROX. 89 lb [40 kg].
4. SHIPPING WEIGHT APPROX.104 lb [47 kg].
FRONT
GRILLE NOT SHOWN
FOR CLARITY
710.2
[27.96]
TOP/BOTTOM
403.2
[15.87]
1
QX118 Specifications
group • S
NOTE: This drawing has been reduced. Do not scale.
March 2011
QX118 Specifications
group • S
PERFORMANCE DATA
See NOTES GRAPHIC DATA for details
Frequency Response: Processed
LF = green
10
0
SPL (dB)
-10
-20
-30
-40
-50
10
100
1000
20000
Frequency (Hz)
Frequency Response: Unprocessed
Processor Response
LF = green
LF = green
20
110
10
dB re 0.775 V rms
120
SPL (dB)
100
90
80
0
-10
-20
-30
70
-40
60
10
100
1000
20000
Frequency (Hz)
10
100
1000
20000
Frequency (Hz)
Impedance
LF = green
Ohm
100
10
1
10
100
1000
20000
Frequency (Hz)
Eastern Acoustic Works • One Main Street • Whitinsville, MA 01588 • tel 800 992 5013 / 508 234 6158 • fax 508 234 8251 • www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice.
Part Number: RD0521 A00
March 2011
QX118 Specifications
INPUT PANEL
group • S
SIGNAL DIAGRAM
1-Way, Single-Amp (LF)
DSP
EQ
HPF
LPF
AMP
LF
LEGEND
DSP:
HPF:
LPF:
LF/MF/HF:
AMP:
XVR:
EAW UX8800 Digital Signal Processor –or–
Integral Digital Signal Processing for NT products.
High Pass Filter for crossover –or–
Recommended High Pass Filter.
Low Pass Filter for crossover.
Low Frequency / Mid Frequency / High Frequency.
User Supplied Power Amplifier –or–
Integral Amplifier for NT products.
Passive LPFs, HPFs, and EQ integral to the loudspeaker.
NOTES
TABULAR DATA
1. Measurement/Data Processing Systems: Primary - FChart: proprietary EAW software; Secondary - Brüel & Kjær 2012.
2. Microphone Systems: Earthworks M30; Brüel & Kjær 4133
3. Measurements: Dual channel FFT; length: 32 768 samples; sample rate: 48 kHz; logarithmic sine wave sweep.
4. 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°.
5. Environment: Measurements time-windowed and processed to eliminate room effects, approximating an anechoic environment. Data processed as anechoic or fractional space, as noted.
6. Measurement Distance: 7.46 m. Acoustic responses represent complex summation of the subsystems at 20 m. SPL is referenced to other distances using the Inverse Square Law.
7. Enclosure Orientation: For beamwidth and polar specifications, as shown in Mechanical Specification drawing.
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. 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.
17. Accelerated Life Test: Maximum test input voltage applied with an EIA-426B defined spectrum; measured with recommended signal processing and Recommended Protection Filter.
18. 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.
19. High Pass Filter: This helps protect the loudspeaker from excessive input signal levels at frequencies below the Operating Range.
GRAPHIC DATA
1. Resolution: To remove insignificant fine details, 1/12 octave cepstral smoothing was applied to acoustic frequency responses and 1/3 octave cepstral smoothing was applied to the beamwidth and
impedance data. Other graphs are plotted using raw data.
2. Frequency Responses: Variation in acoustic output level with frequency for a constant input signal. Processed: normalized to 0 dB SPL. Unprocessed inputs: 2 V (4 ohm nominal impedance), 2.83 V (8
ohm nominal impedance), or 4 V (16 ohm nominal impedance) referenced to a distance of 1 m.
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.
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).
6. Polar Data: Horizontal and vertical polar responses for each 1/3 octave frequency band 100 Hz to 16 kHz or Operating Range.
Eastern Acoustic Works • One Main Street • Whitinsville, MA 01588 • tel 800 992 5013 / 508 234 6158 • fax 508 234 8251 • www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice.
Part Number: RD0521 A00
March 2011
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