WL118-SW-WH, single 18-inch PASSIVE sub woofer, WHITE, QSC
Accessible, affordable, accurate.
ILA is a line array system designed specifically for installation. ILA
System v2 is a complete system consisting of line array, subwoofer,
processing, amplification and suspension accessories. The result is an
accessible system with very high performance, moderate cost and ease of
An ILA system doesn't require set up by an expert user
with sophisticated acoustical measurement equipment. The SC28 system
controller offers simple preset recall processing. While it's simple to
use, the SC28 offers audio quality so good that it's being used on major
concert tours. To achieve this combination of simplicity and
performance, QSC developed the proprietary Intrinsic Correction™
Most line array systems currently available are designed
for touring applications. Touring requires extreme ruggedization and
expensive suspension hardware. As a result, overall system cost is
driven beyond the means of many facilities that could benefit from line
array performance. By focusing on installation applications, using a
molded enclosure and simplifying the rigging design, QSC drove cost out
of the ILA system while retaining the sound quality, coverage and power
of high end touring line array systems.
Each Installation Line Array element uses a pair of
high-power, neodymium magnet, 8" diameter low-frequency drivers. Both
woofers produce low frequencies but only one covers the mid-range
resulting in more uniform directivity in the crossover region. For high
frequencies, a pair of 1.75" (voice coil diameter) neodymium compression
drivers with titanium domes are mounted on a multiple aperture
diffraction waveguide* that provides extremely wide coverage (140º). As a
result, a WL2082-i system will rarely require additional side or center
fill speakers and solid stereo imaging is preserved across the
What's new for version 2?
An upgraded subwoofer, the WL118-sw is a single 18"
version of the popular GP218-sw touring subwoofer that offers offers an
impressive combination of punch and low-frequency extension. The
addition of the SC28 System Controller with its simple-to-use presets,
has greatly improved the ease of deployment of the system and the sound
quality markedly enhanced.
WL2082-i line array
- Installation-optimized design brings affordable and uncompromised line array performance to a broader range
- Compact and attractive appearance, available in black and white, harmonizes with any installation environment
- Wide 140° horizontal coverage
- Economical and easy-to-install suspension system with ample array adjustability
- Single 18" subwoofer in a bass-reflex enclosure
- 850 watt continuous power capacity
- Frequency range down to 29 Hz
- May be suspended at the top, or behind the WL2082-i array
- Available in black or white to harmonize with venue décor
SC28 System Controller
- Intrinsic Correction for superior line array sound quality
- Simplified setup - input a few basic parameters and the SC28 does the rest
- Advanced subwoofer management
- Uncompromised audio performance - used on major national tours
- More information about the SC28
CMX Series Power Amplifiers
- Proven, reliable amp with superb sound quality
- Presets are pre-programmed into the SC28 processor
- High power - only 3x CMX2000V amplifiers plus one CMX800V needed to power a pair of 6+2 arrays
- More information about the CMX Series
The system may be used in bi-amplified or tri-amplified
mode. In general, the tri-amplified mode will produce the best
performance and, for arrays larger than four boxes, will not increase
the total cost of system amplification.
Available in black or white, the WL2082-i enclosure is
made of high impact polystyrene with extensive internal ribs to
eliminate acoustic losses due to sidewall flex. The Installation Line
Array may be used in outdoor applications where the system is not
directly exposed to the elements. The enclosure material is formulated
with UV inhibitors, the grille is made of aluminum and the woofer cones
are weather resistant.
Rigging for the ILA is simple, flexible and safe
providing a 10:1 design factor with twelve WL2082-i systems in the array
(see the owner’s manual for details before planning any array
suspension). The array is assembled with the included bolts and the
relative angle between adjacent boxes is adjustable in 1º increments for
precise tailoring of vertical coverage. For those who prefer quick
release pins to the included bolts, an optional kit of four quick
release pins (QRP-KIT-1) is available.
ILA subs may be suspended at the top of an ILA array
using the standard FP2082-i array frame. When trim height is limited,
the ILA sub may be suspended behind the array using the available
EB2082-i extension bar. For installations in which the subwoofers are
ground stacked, the GP118-sw offers identical performance but omits the
ILA-compatible suspension hardware.
The following table provides information regarding the maximum number of WL2082-i line
array elements and WL115-sw subwoofers that may be suspended using various configurations
of the available suspension accessories. The calculations for this table are based on a 10:1
design factor. See owner's manual for detail before designing or suspending array. While a single
WL2082-i may be used for some specialized applications such as stage lip front fill, or under
balcony fill three or more ILA elements are required before the system begins to perform as a
true line array.
||Max WL2082-i in array
||Max WL118-sw in array
|(With 10:1 design factor)
|Dual FB2082-i with EB2082-i (subwoofers behind line array)
To determine the array position and box-to-box splay angles, EASE Focus software is available free from the QSC web site.
Here are a few simple rules to keep in mind when configuring an ILA (or any other line array) system.
Arcuate arrays and spiral arrays will always produce the best
results. The use of straight arrays and convoluted arrays is
discouraged. For more detail on why, download Mark Engebretson's White Paper on Intrinsic Correction.
While the ILA will accommodate splay angles of up to 10°, the best
performance will be obtained by keeping all splay angles to less than
6°. Remember, the amplifiers for an ILA v2.0 system can drive up to 16
ILA boxes so it’s relatively inexpensive to add more speakers.
Finally, the "Auto Splay" function in Focus will provide a starting
point – not a final solution for your array hang. Use the aiming points
of the top and bottom boxes and manually fill in the rest so as to
create either an arcuate or spiral array.