QSC Audio Speaker System 369 User Guide

1675 MacArthur Blvd., Costa Mesa, CA, 92626 USA  
Main Number (714) 754-6175 Sales & Marketing (714) 957-7100 or toll free (USA only) (800) 854-4079  
Customer Service(714) 957-7150 or toll free (USA only) (800) 772-2834  
WideLine Series Loudspeaker System User Manual  
WL218-sw  
DB218-sw  
AF218-sw  
subwoofer line array loudspeaker  
dolly board  
subwoofer array frame  
*TD-000232-00*  
TD-000232-00 revB  
 
Introduction  
The WL218-sw is a dual 18-inch (457mm) subwoofer designed for suspended or ground stacked use in touring or installed concert appli-  
cations. With an impressive combination of sonic impact, low-frequency extension, and accuracy, the WL218-sw is an ideal companion  
for QSC's WideLine as well as other professional sound reinforcement systems.  
Suspension of WL218-sw subwoofers is easy using the AF218-sw, a heavy-duty array frame constructed of welded 6061-T6 aluminum. In  
ground-supported applications, the WL218-sw may be stacked using the interlocking feet and recess features machined into the enclo-  
sure's ends.  
The woofers incorporate a double layer spider and triple roll surround for extended and controlled excursion at high power. The 4-inch  
(102mm) voice coil is wound on a fibreglass former to prevent deformation at high operating temperatures and is extensively vented to  
reduce power compression. An aluminum demodulating ring is employed for low distortion. Each woofer is housed in a separate chamber  
to prevent failure of one driver from causing damage to the other. A 14-gauge (1.9mm) powder coated steel grill protects the drivers.  
Enclosure construction features premium quality birch plywood finished in an environmentally friendly, water-borne, polymer finish that's  
tough and field repairable. Extensive internal bracing and exclusive use of birch plywood minimizes acoustic loss due to panel resonance.  
Ample port area allows air to move freely with minimal turbulence. The ports are arranged so as to eliminate asymmetrical loading of the  
woofers, further protecting the drivers.  
Transport and handling features are also provided in the WL218-sw's design. No matter how the box is deployed, one of the dozen han-  
dles will be where it needs to be. The included dolly has rugged, 3.5-inch ball bearing casters and an easy-to-use, snap-on mechanism for  
attachment to the enclosure.  
For users of QSC's digital audio transport and processing products, QSControl.net / Basis DSP files tuned for use with WL218-sw are  
1
WL218-sw Loudspeaker  
2
1- Handles  
2- Stacking recesses  
6
3
3- Stacking feet  
4- Receiver tubes with ball lock pins & captive articulated joints  
5
5- Dolly board latch plates  
6- Grille  
4
7- Skids  
8- Serial number plate  
9- Rear link and receiver block  
10- Input connector plate  
7
8
9
10  
3
 
Introduction (continued)  
1
DB115-sw Dolly Board  
1- Pads  
2- Casters  
2
3
3- Stacking Recesses  
4- Latches  
5- Handling Cut-outs  
6- Handles  
4
6
5
2
1
AF218-sw Array Frame  
1- Ground stacking bumpers  
2- Center support bar  
3- Shackle holes (accept 3/4” (20 mm) screw pin anchor shackle)  
Use only shackle holes for suspension of array!  
4- Rigging plate, retaining bolts, and link assembly with ball lock pin  
5- Receiver blocks  
5
3
4
AF218-sw Array Frame Feet (Optional)  
1- Frame Feet, 4 each  
2
3
2- Screw, Button Head, Torx drive, 1/4-20 x 3/4 Long, 8 each  
3- Lock Nut with Nylon Insert, 1/4-20, 8 each  
1
4
 
Rigging  
Rigging the WideLine Array is simple and flexible. Enclosures are pinned together with quick-release ball-lock pins. The AF218-sw array frame  
supports flown array applications and can be inverted for ground stack applications. The enclosures can also be ground stacked without a frame  
using the stacking feet and recesses integral to the enclosure’s design.  
Rules for Suspension  
•Correct use of all suspension hardware and components is imperative in sound system rigging and deployment.  
•Always calculate suspended loads before lifting to ensure suspension components and hardware are used within their respective load limits.  
•Research local codes and regulations to fully understand the requirements for suspended loads in the venue in which the equipment is to be  
suspended.  
•Use only shackle holes for suspension of array.  
•Be absolutely certain of the integrity of any structural member intended to support suspended loads. Hidden structural members can have  
hidden structural weakness.  
•Consult a Professional Mechanical or Structural Engineer licensed in the jurisdiction of the sound system installation to review, verify, and  
approve all attachments to the building or structure.  
•Never assume anything- Owner or third-party supplied suspension attachment points may not be adequate for the loads to be suspended.  
•Employ the services of a Professional Rigger for hoisting, positioning, and attaching the equipment to the supporting structure.  
•Always inspect all components (enclosures, suspension brackets, pins, frames, bolts, nuts, slings, shackles, etc.) for cracks, wear, deforma-  
tion, corrosion, missing, loose, or damaged parts that could reduce the strength of the assembly before lifting. Discard any worn, defective, or  
suspect parts and replace them with new appropriately load-rated parts.  
Shock Loading  
When a load is either moved or stopped, its static weight is magnified. Sudden movements can magnify the static weight several times. This  
magnification of static weight is termed "shock loading". Shock loading poses a danger to equipment and workers. The effects of shock loading  
can be instantaneous, or they may remain undetected unless the equipment is visually damaged. Avoiding shock loading requires careful plan-  
ning and knowledge of equipment, rigging, and lifting practices.  
Shock loading of equipment and structures is usually confined to lifting and installation, but natural forces (winds, earthquakes) can impose  
shock loads several times the static load. This is why structures and suspension equipment must be capable of supporting several times the  
weight of the equipment suspended.  
WideLine Working Load Limits and Design Factors  
Table 1 lists the WideLine suspension components and provides Working Load Limit data at various Design Factors. The tabulated Design Factors  
are for static loads only. The choice of which Design Factor to use will depend upon the jurisdiction and venue of installation, as well as the con-  
ditions of suspension. Dynamic conditions are determined by unknown, installation-specific factors and should be referred to a Licensed Struc-  
tural Engineer for clarification before proceeding with any suspension of the equipment. The data presented is based upon the listed component  
weights:  
Table 1: WideLine WL218-sw System Working Load Limits  
Component  
Weight  
5:1 Design Factor 7:1 Design Factor  
10:1 Design Factor  
WL218-sw Loudspeaker  
AF218-sw Array Frame  
206 lb (93.4 kg)  
80 lb (36.3 kg)  
n/a  
3400 lb(1540 kg)  
3400 lb(1540 kg)  
6400 lb (2900 kg)  
2400 lb (1090 kg)  
2400 lb (1090 kg)  
4500 lb (2040 kg)  
1700 lb (771 kg)  
1700 lb (771 kg)  
3200 lb (1450 kg)  
1
1/2-inch Shoulder Bolt  
1
n/a  
n/a  
2400 lb (1090 kg)  
6400 lb (2900 kg)  
1700 lb (771 kg)  
4500 lb (2040 kg)  
1200 lb (544 kg)  
3200 lb (1450 kg)  
5/16-inch Ball Lock Pin  
1
1/2-inch Ball Lock Pin  
1- Working Load Limits are per fastener loaded in double shear. Data is for informational purposes only.  
5
 
Rigging (continued)  
Front Articulated Joint-  
1- Remove the ball lock pin.  
1
NOTE: All hardware/components must be rated for the  
expected loads as determined by the Professional Engi-  
neer responsible for suspension.  
2- Slide the articulated joint out of the  
receiver tube by lifting its retaining screw  
upward.  
Attaching WL218-sw Loudspeaker to WL218-sw Loud-  
speaker  
3- Lock in place using the ball lock pin.  
2
1- With the enclosures on dolly boards and facing downward, posi-  
tion two enclosures adjacent one another such that the front receiver  
tubes are aligned.  
2- Unpin and extend the articulated joints from the lower enclosure.  
Align and insert the articulated joint into the upper enclosure’s  
receiver tube. Pin each articulated joint in place using two ball lock  
pins, one at each end inserted fully and locked in position. Ensure all  
four (4) pins are used and locked securely into place. Replace any  
faulty or questionable ball lock pin immediately.  
3
Failure to follow these recommendations may result in  
dangerous  
conditions, injury, or death!  
3- If suspending the array, DO NOT PIN THE REAR LINK ASSEMBLY AT  
THIS TIME. The rear links should be pinned with their respective ball  
lock pins as the array is hoisted.  
Attaching Frame Feet to AF218-sw Array Frame  
(0ptional)  
With the frame lying flat, attach the frame feet by inserting the button  
head screw through the corresponding mounting hole and lock nut.  
Tighten fully.  
NOTE! Frame feet are for support during installation only.  
Frame is unstable when vertically oriented on frame feet.  
Do not drop frame on to frame feet when loading and  
unloading. Do not leave unattended under any conditions.  
Attaching WL218-sw Loudspeaker to AF218-sw Array  
Frame  
1- The enclosures to be suspended should be pinned together at the  
FRONT left and right receiver tubes as outlined above.  
2- Unpin and extend the top enclosures articulated joints and pin into  
place.  
3- The AF218-sw array frame should be positioned so that the top  
enclosure’s articulated joints can be inserted into the AF218-sw and  
pinned into place. Position the AF218-sw and pin the top enclosure’s  
articulated joints into to AF-218-sw’s receiver tubes.  
4- Position the AF218-sw array frame so its rear link may be pinned  
into the top enclosures receiver block at the desired location. Pin the  
link into the top enclosure ensuring the pin is fully inserted and locked  
in place.  
NOTE! The marked splay angle location where the AF218-  
sw’s link is pinned is the splay angle between the frame  
and the top enclosure (AF218-sw link has 0° offset).  
6
 
Rigging (continued)  
Adjusting the Angle Between Enclosures (Splay)  
The illustration below shows the rear receiver block of two enclosures joined by the upper enclosure’s rear link (enclosures and ball lock pin  
lanyards omitted for clarity). Note the link is marked in two locations when extended. The unlabelled white line nearest the end of the link  
is the normalized (or 0°) hole position marker. The white line above it labeled with +3 is the +3° hole position marker. When using the nor-  
malized hole position in the link, the splay between the enclosures is as marked on the receiver block. When using the +3 (+3°) hole position  
in the link, add 3° to the receiver block position the link is pinned into.  
The left-side illustration shows the use of the normalized (0°) link hole position. The splay angle between the upper enclosure and the one  
above it (not shown) is 0° because the link is pinned through its normalized hole location and the is pinned into the block at the 0° position.  
The splay angle between the two receiver blocks shown is 2°; again, the link utilizes the normalized hole position and the is pinned into the  
block at the 2° location.  
The right-side illustration shows the use of the +3 (+3°) link hole position. The splay angle between the upper enclosure and the one above  
it (not shown) is 3° because the link is pinned through its +3 hole location and the is pinned into the block at the 0° position. The splay angle  
between the two receiver blocks shown is 5°; again, the link utilizes the +3 hole position and the is pinned into the block at the 2° location.  
Upper enclosure  
pinned for 0° splay.  
Pin is at 0° location,  
link uses normalized  
hole position.  
Upper enclosure  
pinned for 3° splay.  
Pin is at 0° location,  
link uses +3° hole  
position.  
Link marking detail-  
line closest to the  
link’s end is the nor-  
malized (0°) hole  
location and the line  
labeled +3 is the +3°  
hole location.  
Lower Enclosure  
pinned for 5° splay.  
Pin is at 2° location,  
link uses +3° hole  
position.  
Lower Enclosure  
pinned for 2° splay.  
Pin is at 2° location,  
link uses normalized  
hole position.  
7
 
Rigging (continued)  
Array Frame Ground Stacking with the AF218-sw  
The AF218-sw array frame can be used for ground stacking up  
to four WL218-sw enclosures. There is no recommended proce-  
dure other then the requirement that all articulated joints,  
links, and ball lock pins be in their normal position (as if sus-  
pended) and be fully inserted and locked into position.  
Ensure the enclosures  
are fully pinned includ-  
ing the bottom enclo-  
sure being pinned to the  
AF218-sw array frame  
(see detail).  
Do not ground stack more than four (4) WL218-sw  
enclosures on an AF218-sw array frame in an array  
frame ground stack configuration!  
Ground Stacking WL218-sw Enclosures without  
an Array Frame  
The WL218-sw enclosures feature stacking feet and recesses  
on the enclosure’s ends so that, when properly oriented, the  
upper enclosure’s stacking feet fit into the lower enclosure’s  
stacking recesses.  
DO NOT stack more than one WL218-sw enclosure  
on another WL218-sw enclosure.  
When stacking enclo-  
sures without AF218-sw  
array frame, ensure the  
stacking feet are posi-  
tioned in the recesses  
on adjacent enclosures.  
Stack only on a level surface capable of supporting  
many times the enclosure’s weight.  
Use of non-slip surfaces or restrain-  
ing systems may be required to retain  
the enclosure’s position.  
8
 
WL218-sw Controls and Connections  
WL218-sw Input Plate and pinout detail  
Input Connections  
The WL218-sw input connectors are a pair of Neutrik  
NL4's wired in parallel. See Table 2 or the WL218-sw  
Input Plate for connector pinout.  
WL218-sw  
SUSPENSION OF THIS PRODUCT SHOULD BE  
DONE BY QUALIFIED PERSONS FOLLOWING  
SAFE RIGGING PRACTICES. OTHER RIGGING  
LIMITATIONS MAY APPLY. SEE WARNINGS IN THE  
Note pin numbers 2+ and 2- are wired  
straight through from one connector to the  
other. This accommodates using one input  
cable assembly (where appropriate) for sub-  
woofer and full range loudspeaker connec-  
tions. Additionally, pin numbers 1+ and 1- of  
both NL4s are wired in parallel.  
INPUT/OUTPUT  
WORKING  
3400 LBS /  
2430 LBS / 1700 LBS / 771  
WEIGHT 206 LBS  
PIN  
1+  
QSC AUDIO PRODUCTS, LLC  
COSTA MESA CALIFORNIA, MADE IN USA  
2+  
The WL218-sw loudspeaker is not equipped  
with a crossover network. All signal pro-  
cessing must be done before connecting  
audio power to the loudspeaker.  
Reconfiguring the Input Connections for  
Separate Transducer Connection  
If separate transducer connection is required, the input  
plate may be removed and the wiring altered so that  
each transducer has a separate, dedicated connection.  
Or, the transducers can be connected in parallel on pins  
1+, 1- or pins 2+, 2-.  
White  
Black  
+
-
NL1  
1+  
1+  
If alterations to the wiring are made, ensure  
the input panel and connectors are clearly  
marked so the next user is aware of the mod-  
ification made.  
1+  
2-  
1-  
2+  
1-  
1-  
Orange  
Grey  
+
-
2+  
2+  
NL2  
1+  
1-  
2-  
2-  
2-  
2+  
9
 
WL218-sw Specifications  
Configuration:  
2 x 18-inch (457mm) ported subwoofer  
Transducers:  
8 ohm, 18-inch (457mm) cone transducer with 4-inch (102mm) voice coil, ceramic magnet  
1
Frequency Response :  
38 - 240 Hz (+/- 3 dB)  
2
Frequency Range :  
31 - 1200 Hz (-10 dB)  
Impedance:  
4 ohms nominal (3.2 ohms minimum at 145 Hz)  
3
Continuous Power Capacity :  
2000W (80V into 3.2 ohms)  
101 dB SPL  
4
Sensitivity (1W at 1m) :  
5
Maximum SPL (continuous/peak) :  
134/140 dB SPL at 39 inches (1m)  
Enclosure Type:  
Enclosure Material:  
Finish:  
Ported, trapezoidal enclosure  
Baltic birch plywood. 1.42-inch (36mm) baffle and sides, 0.59-inch (15mm) top and bottom  
Polymer paint, water based  
Grille:  
14 gauge (0.074-inch) thick powder coated steel  
Connectors:  
Factory wiring:  
Attachment Points:  
Weight:  
Two (2) NL4 in parallel, pins 1+/- sub. Pins 2+/- unused (may be reconfigured for use of 2+, 2-),  
Transducer 1: white to 1+, black to 1-. Transducer 2: orange to 1+, grey to 1-  
Integral, adjustable rigging system; splay adjustable at 0, 2,3,4,5,6,7,8,9,and 10 degrees  
Without DB218-sw dolly board-  
With DB218-sw dolly board-  
Net: 206 lb (93.4 kg)  
Net 236 lb (107.0 kg)  
Shipping: 251 lb (113.8 kg)  
Working Load Limit Information:  
Component  
Weight  
5:1 Design Factor 7:1 Design Factor  
3400 lb(1540 kg) 2400 lb (1090 kg)  
10:1 Design Factor  
1700 lb (771 kg)  
WL218-sw Loudspeaker  
206 lb (93.4 kg)  
Notes:  
1
2
3
4
5
3dB relative to sensitivity, based upon half-space conditions, without external processing  
-10dB relative to sensitivity, based upon half-space conditions, without external processing  
40 to 400 Hz, 2 hours pink noise, 6dB crest factor, power defined as Vrms squared divided by minimum impedance  
2 pi conditions averaged in the adjacent octave band below crossover frequency  
Calculated using power capacity and sensitivity  
10  
 
DB218-sw Specifications  
Material:  
Baltic birch plywood. 0.75-inch (18mm)  
Polymer paint, water based  
Net: 30 lb (13.6 kg)  
Finish:  
Weight:  
AF218-sw Specifications  
Material:  
Aluminum 6061-T6  
n/a  
Finish:  
Working Load Limit Information:  
Component  
Weight  
5:1 Design Factor 7:1 Design Factor  
10:1 Design Factor  
1700 lb (771 kg)  
AF218-sw Array Frame  
80 lb (36.3 kg)  
3400 lb(1540 kg)  
2400 lb (1090 kg)  
Dimensions- WL218-sw  
35.740”  
(907.8mm)  
34.750”  
(882.65mm)  
21.322”  
(541.58mm)  
16.010”  
(406.65mm)  
45.920”  
(1166.37mm)  
11  
 
Dimensions- DB218-sw  
Dimensions- AF218-sw  
12  
 
13  
 
How to Contact QSC Audio Products  
Mailing address:  
QSC Audio Products, LLC  
1675 MacArthur Boulevard  
Costa Mesa, CA 92626-1468 USA  
Telephone Numbers:  
Main Number  
(714) 754-6175  
Sales & Marketing  
Customer Service  
(714) 957-7100 or toll free (USA only) (800) 854-4079  
(714) 957-7150 or toll free (USA only) (800) 772-2834  
Facsimile Numbers:  
Sales & Marketing FAX  
Customer Service FAX  
(714) 754-6174  
(714) 754-6173  
World Wide Web:  
E-mail:  
QSC Audio Products, LLC 1675 MacArthur Boulevard Costa Mesa, California 92626 USA  
©2006 “QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office.  
 

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