QSC Audio Speaker ADS52 User Guide

AcousticDesign™ Multi-Use Loudspeaker  
AD-S52  
and  
AD-S52T  
All-Weather 133 mm (5.25”) two-way with shielded woofer and neodymium tweeter  
“T” suffix models: 70V/100V transformer equipped (bypassable)  
User Manual  
EN  
*TD-000139-00*  
TD-000139-00 rev.A  
 
Introduction  
Thank you and congratulations on your purchase of the AcousticDesign  
AD-S52 multi-use, weather resistant loudspeakers. These products rep-  
resent the state-of-the-art in all-weather, lightweight SR (sound rein-  
forcement) loudspeaker systems. To get the most from your investment,  
we encourage you to review this manual carefully.  
The AD-S52 loudspeaker systems are full range, high output, two-way  
designs delivering superior sound quality and high SPL in a lightweight,  
weather resistant enclosure. The low frequency driver is magnetically  
shielded and the neodymium high frequency driver has very little stray  
magnetic field, making the AD-S82 perfect for use near video monitors.  
The included ball mount provides secure and versatile installation.  
These loudspeakers make an excellent choice for a wide variety of SR  
applications.  
EN  
AD-S52T models have a 70V/100V matching transformer and tap selec-  
tor switch. The transformer may be bypassed.  
The illustration (at right) highlights product features:  
1- two sets of threaded inserts for optional YM-5 yoke mount  
2- transformer tap selector (AD-S52T model only)  
3- binding post input terminals (weather resistant cover removed)  
4- ball mount attachment point (ball mount removed)  
5- safety cable attachment point  
What’s Included  
The carton contains:  
•AD-S52 (or AD-S52T) loudspeaker assembly (2 each)  
•Ball mount assembly (2 each)  
•6 mm hex key (Allen wrench)  
•Input cover (2 each)  
•Input cover gasket (2 each, may be part of cover)  
•Input strain relief bushing (2 each, may be part of cover)  
•M4 x 1.4 x 15 mm long pan head Phillips screw (4 ea., for covers)  
•This User Manual  
Mounting  
Stand Alone Mounting  
If using the loudspeaker only (no ball mount or optional yoke mount) the  
loudspeaker can be set on any appropriate surface. The cabinet will  
lean back at a slight angle when set on a flat surface.  
When operated at high output levels, the cabinet can vibrate, causing  
the cabinet to move or creep if set on a hard surface. Use anti-slip mat-  
ting under the cabinet or self-adhesive rubber feet to keep the cabinet  
from creeping.  
Safety Cable Attachment  
On the back of the loudspeaker, near the bottom, is a safety cable  
attachment point. Install a safety cable strong enough to support sev-  
eral times the weight of the loudspeaker assembly in the event it may  
fall. The cable must be secured to a secondary support point which is  
also strong enough to support several times the loudspeaker’s weight.  
Attach safety  
cable here.  
IMPORTANT! ENSURE THAT THE LOUDSPEAKER IS  
MOUNTED PROPERLY AND A SAFETY CABLE IS  
INSTALLED TO RETAIN THE LOUDSPEAKER IN THE  
EVENT OF A MOUNTING FAILURE.  
3
 
Mounting (continued)  
Ball Mount Adapter  
The included ball mount adapter can be attached to almost any  
flat surface. The ball mount adapter’s back plate can be removed,  
if desired. This will reduce the overall depth of the assembly and  
the footprint of the mount on the wall.  
To use the wall mount adapter, secure to the mounting surface  
using four screws. Ensure the mounting surface is sufficiently  
strong to support the loudspeaker and any vibration or seismic  
activity. Connect the wiring to the loudspeaker and install the ter-  
minal cover, if desired. Thread the adapter into the threaded insert  
on the bottom of the loudspeaker. Adjust the angle of the loud-  
speaker and tighten the hardware fully. We recommend 12 lbs.-ft  
(15 N-m) of tightening torque be applied to both fasteners.  
EN  
Optional Yoke Mount  
There is an optional yoke mount available, model YM-5. Contact  
your QSC Audio Products representative for details.  
Connection  
AD-S52 or AD-S52T?  
Connection is the same for both models, but for the AD-S52T you  
must set the transformer Tap Selector Switch to the appropriate  
setting before applying audio.  
Terminations  
The binding post terminals will accept:  
•bare wire (up to 0.15” or 3.8 mm diameter)  
•spade lug terminals  
•banana plugs (singles or dual 0.75” spaced)  
Input Connection Cover (wire termination only)  
The loudspeaker includes a weather resistant cover for the input  
terminals. For proper sealing, the cable jacket must be round (or  
close to round) and be between 0.12” (3mm) and 0.25” (6.3mm)  
outside diameter.  
•Pass the wires through the compression nut, gasket, and  
cover.  
•Loosen the binding post nuts.  
•Strip the wires and insert into binding posts.  
•Tighten nuts.  
•Slide the cover over the terminals and secure using the two  
machine screws provided.  
•Ensure gasket is seated properly; tighten compression nut.  
To assure weather-tight connections, make sure the  
Input Cover fits flush against the loudspeaker cabi-  
net, all gaskets are properly placed, and hardware  
is tightened sufficiently. Use of the Input Cover may  
require the use of smaller wire sizes for proper fit.  
NOTE! You cannot use banana type connectors or  
spade lugs when the Input Connection Cover is  
used. Connect the wires directly to the terminals  
when using the Input Cover.  
4
 
Wiring  
Connect the amplifiers + and - outputs directly to the loud-  
speaker’s + (red) and - (black) terminals. The binding post  
terminals accept wire, spade terminals, or banana plugs.  
Use only wire connections when using the Input Cover. The  
terminals are spaced 0.75” (19 mm).  
AMPLIFIER  
Maintain proper speaker and amplifier con-  
nection polarity throughout the entire system.  
All positive-marked loudspeaker terminals  
should be connected to positive-marked  
amplifier output terminals. This will provide  
the best possible low-frequency output from  
your system.  
EN  
AD-S52T 70V/100V Transformer Tap Selection  
AD-S52T models are equipped with a 70V/100V matching  
transformer for distributed audio systems. There is a trans-  
former tap selector switch on the rear panel for setting the  
power level of the loudspeaker. The switch may also be set  
for 8 ohm operation, bypassing the transformer com-  
pletely.  
To select the power level, align the slot with the desired  
power setting number. Use a coin or flat tip screwdriver to  
operate the switch.  
70V distributed systems: use the right side markings.  
Select from 3.75, 7.5, 15, or 30 watts.  
100V distributed systems: use the left side markings.  
Select from 7.5, 15, or 30 watts. the “X” position should  
not be used.  
NOTE! 8 ohm setting should be used for 8  
ohm audio systems only. Do not use 8 ohm  
setting when connecting the AD-S52T loud-  
speaker to 70V/100V distributed audio sys-  
tems.  
5
 
Specifications  
1
Frequency Response :  
90- 20k Hz (-6 dB)  
70- 21k Hz (-10 dB)  
Drivers:  
low frequency- 5.25” (133 mm) magnetically shielded  
high frequency- metallized dome, neodymium magnet structure  
2
Maximum Output :  
(calculated)  
103 dB SPL continuous rms output  
106 dB SPL peak output  
Impedance:  
8 ohms nominal  
6.3 ohms minimum, 280 Hz  
155 ohms maximum  
EN  
3
Power Rating :  
rms (IEC 100 hrs):  
recommended amp power:  
80 watts rms  
160 watts rms  
Sensitivity:  
91.5 dB, 1 watt, 1 meter, free field (4 pi)  
Directivity Index:  
500 Hz  
3.0  
4.5  
10.7  
6.9  
7.6  
6.2  
1000 Hz  
2000 Hz  
4000 Hz  
8000 Hz  
16000 Hz  
Q:  
500 Hz  
1.5  
2.6  
11.3  
6.3  
7.1  
5.2  
1000 Hz  
2000 Hz  
4000 Hz  
8000 Hz  
16000 Hz  
Weight per pair:  
AD-S52: 15 lb. net, 22 lb. shipping  
AD-S52T: 18 lb. net, 25 lb. shipping  
Nominal Coverage:  
Enclosure and Grill:  
Connectors:  
90° horizontal. x 60° vertical  
high impact polystyrene, removable metal grill  
binding posts (accept up to 0.15” (3.8 mm) diameter wire, banana plugs, or spade lugs)  
Mounting Hardware:  
Included: ball mount adapter with variable wall plate configurations, alloy construction  
Optional: yoke mount with retaining knobs (model YM-5)  
NOTES:  
1- All frequency ranges specified refer to measured free-field response (4 pi).  
2- Calculated maximum peak SPL at 1 m, free-field, speaker operating at rated rms power pink noise input, 50 Hz to 20 kHz.  
3- Maximum input power tested in accordance with IEC recommendations; 50 Hz to 20 kHz band limiting, 6 dB signal crest factor.  
Specifications are subject to change without notice.  
6
 
Dimensions  
EN  
7
 
Painting the Loudspeaker  
The loudspeaker enclosure, grill, and mount can be painted to match any decor, provided the following precautions are observed.  
The cabinet is made of high impact polystyrene which requires controlled painting procedures in order to obtain good results. Use a  
paint “system” designed for high impact polystyrene from any reputable paint supplier.  
1- Remove the grill.  
2- If painting mount and loudspeaker as a unit: Attach the ball mount or yoke mount.  
3- Mask the loudspeaker’s input connector.  
4- Mask the woofer, tweeter, and port being certain not to apply tape directly to the drivers. Alternatively, the inside of the grill can  
be completely masked and set in place on the loudspeaker enclosure for painting.  
5- Wash the components to be painted with a mild soap and hot water. Be careful not to get water on or into either of the drivers or  
the input connections. Rinse with hot water. Allow to dry thoroughly.  
6- Scuff-sand the components to be painted using red Scotchbrite® pad or 320 - 400 grit sandpaper.  
7- Using compressed air, remove all dust from the components to be painted. Do not blow compressed air directly into either driver.  
8- Clean the components to be painted.  
EN  
9- Using a clean, lint-free, white cloth, wipe the components to be painted with suitable prep solution.  
10- Apply adhesion promoter.  
11- Apply primer topcoat.  
12- Apply paint.  
13- Allow to dry for at least 8 hours before handling.  
8
 
 
How to Contact QSC Audio Products  
Cómo comunicarse con QSC Audio Products  
Comment prendre contact avec QSC Audio Products  
Kontaktinformationen für QSC Audio Products  
联系 QSC Audio Products  
Mailing address:  
QSC Audio Products, Inc.  
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, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA  
©2003 “QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office.  
 

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