JobSite Systems Speaker LST CTR User Manual

INSTALLATION & USER GUIDE  
For High Performance  
Home Theater Reproduction  
from In-Wall Locations  
RIGHT, LEFT, SURROUND AND  
LST-RLS/CTR  
 
CENTER CHANNEL IN-WALL LOUDSPEAKER  
FEATURES: LST-RLS  
FEATURES: LST-CTR  
I Dual 5-1/4” mica filled polypropylene  
woofers with butyl rubber surrounds  
I Dual 5-1/4” magnetically shielded mica  
filled polypropylene woofers with butyl  
rubber surrounds  
®
I 1” liquid cooled ElastoDynamic  
dome tweeter  
I 1” liquid cooled magnetically shielded  
ElastoDynamic dome tweeter  
®
I Front mounted bass and treble  
cut switches (-3dB)  
I Front mounted dialog enhancement  
switch  
I Configurable as a main or  
surround speaker  
I Front mounted treble cut switch (-3dB)  
I Rigid braced ABS speaker baffle  
I Moisture and UV resistant  
I Rust proof aluminum grille  
I Crossover mounted Off-Axis  
compensation (OAC) switch  
I Rigid braced ABS speaker baffle  
I Moisture and UV resistant  
I Rust proof aluminum grille  
Installation friendly design:  
I Suitable for painting  
Installation friendly design:  
I Connection terminals accept up to 12  
gauge speaker wire  
I Suitable for painting  
IIncludes system mounting hardware for  
I Connection terminals accept up to 12  
New Construction or retrofit installations  
gauge speaker wire  
I Includes system mounting hardware for  
New Construction or retrofit installations  
PRODUCT OVERVIEW  
Figure 1  
New Construction Wings  
Bracket  
Frame  
Speaker Baffle  
IR Knockout (accommodates  
JOBSITE IR-FMR IR Receiver)  
Grille  
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PACKAGE CONTENTS  
TOOLS REQUIRED  
I Speaker x 1  
I Stud Locator (for existing construction)  
I Drywall saw (for existing construction)  
I Pencil (for existing construction)  
I Cordless screwdriver with No2 Philips bit  
I 1/8” Slotted screwdriver x 2  
I Wire stripper  
I Speaker frame x 1  
I Speaker grille x 1  
I Speaker bracket x 1  
I Wings for new construction x 2  
I #6 x 1-5/8” Philips head  
drywall screws x 14  
I Wire labels  
I Speaker cutout template x 1  
INSTALLATION  
PREPARING FOR  
INSTALLATION  
Installation Existing  
Construction:  
If you are installing LST speakers into an  
existing wall, take time to consider any  
possible obstructions, which may be hidden  
inside the wall: studs, electrical wiring,  
telephone wiring, plumbing, AC or heating  
conduit and ductwork.  
1. Using your stud locator, identify the  
location of the studs on each side of the  
proposed speaker mounting location.  
2. Mark their edges, using masking tape.  
3. Repeat this process for the other  
speakers.  
Determine the best mounting locations  
based on the room layout. Before cutting  
any holes, make sure the area behind both  
speakers is clear for installation. Speakers  
provide the best coverage, when centered  
in the wall. Choose a suitable mounting  
height, and then line up both speakers  
approximately the same distance from the  
sidewall and ceiling boundaries.  
4. You may have to adjust the speaker  
mounting locations based on how  
symmetrical the studs are located, in the  
wall space.  
5. Check for clearance using the following  
method.  
a. Drill a 1/4” pilot hole in the center of the  
intended speaker location.  
If you are installing the speakers into a new  
construction wall, follow the above  
recommendations and install the new  
construction speaker bracket.  
b. Cut a foot-long piece of coat hanger.  
c. Bend the wire, creating a right angle,  
leaving 4-1/4” at one end.  
Label the speakers wires at the  
amplifier location.  
d. Poke the “L-shaped” wire into the pilot  
hole and turn it in a complete circle,  
checking for obstructions.  
e. Push it into the wall cavity to make  
sure you have approximately 4” of  
depth.  
f. If the coat hanger movement is  
obstructed by anything, fill the hole(s)  
with spackle and try another location  
2
 
6. Locate the cutout template.  
13. Tightly twist the end of each wire until  
no frayed ends remain.  
7. Use a pencil and the cutout template to  
trace the speaker outline in the desired  
locations on the wall.  
14. Attach the speaker wires to the speaker  
terminal connectors. Connect the  
negative output from the amplifier to the  
black terminal. Connect the positive  
output from the amplifier to the red  
terminal.  
8. Use a drywall saw to cut along the  
penciled line.  
9. Slip the mounting bracket through the  
opening and pull it toward you so that its  
front edge slides into the hole and stops  
in place.  
15. Set the speaker configuration switches  
on the rear of the speaker (see Setting  
the Speaker Configuration Settings).  
10. Attach the frame to the bracket by  
screwing the frame to the bracket using  
the supplied screws. NOTE: Do not over  
tighten the screws, this will distort the  
frame and the grille will not fit.  
16. Install the speaker in the frame. Screw  
the enclosed self-tapping screws into  
the dimples of the speaker baffle as  
shown in Figure 2.  
17. Repeat steps 1-16 for each speaker  
being installed.  
11. The screws should pull the frame and  
bracket together (sandwiching the  
drywall) so that the frame is flush with  
the wall surface.  
18. After making tonal adjustments on all  
speakers (see Setting the Speaker  
Configuration Settings), install the grill  
into the speaker.  
12. Strip 1/4” of insulation from the end of  
each wire.  
Figure 2  
3
 
Installation New Construction:  
8. In unique situations where the bracket  
must be located precisely next to a joist,  
the bracket has “emergency” screw  
holes located on its snap-on tabs. Break  
away two of the outer mounting tabs on  
the side you wish to affix, see Figure 3.  
Notching the joist so the bracket lies  
flush may be required.  
The speaker brackets should be installed  
prior to the drywall.  
1. Attach the wings to the bracket by  
snapping them into the sides of the  
bracket. (See Figure 1). To shorten the  
wings, break them along the scored lines.  
2. The wings and brackets have centering  
lines to simplify placement of the speaker.  
9. Next, screw the bracket tab to the joist  
using one of the supplied screws.  
Important: Do not over-tighten the screw,  
doing so could crack the bracket tab.  
Level the bracket, then affix the other side  
of the bracket assembly using the  
supplied screws.  
3. Use a tape measure to locate and center  
the brackets in the ceiling.  
4. Mark each speaker location with a  
pencil.  
5. Screw one side of the assembled bracket  
with wings to the joist using one of the  
supplied screws.  
10. After the drywall is installed, cut a hole  
in the drywall using the outside of the  
circular bracket flange as a template.  
6. Screw the other side of the bracket/wing  
assembly to the joist. Two screws on  
each side make for a very secure  
installation.  
11. Attach the frame to the bracket by  
screwing the frame to the bracket using  
the supplied screws. NOTE: Do not over  
tighten the screws, this will distort the  
frame and the grille will not fit.  
7. Secure the wire to the bracket using the  
bracket’s wire tie.  
Figure 3  
Break away two of the outer  
mounting tabs on the side  
you wish to affix.  
Emergency  
screw hole for  
butting bracket  
against  
joist.  
4
 
12. The screws should pull the frame and  
bracket together (sandwiching the  
drywall) so that the frame is flush with  
the wall surface.  
LST-RLS Main/Surround Switch  
The crossover on the back of the LST-RLS  
enables you to configure the speaker for  
best performance as either a front “main”  
speaker or rear “surround” speaker. When  
the LST-RLS is used as a surround speaker,  
set the switch to the “Surround” position to  
provide a diffuse sound field which provides  
a more convincing illusion of sound all  
around the listener. When configured as a  
surround speaker, the orientation of the  
tweeter is no longer critical.  
13. Strip 1/4” of insulation from the end of  
each wire.  
14. Tightly twist the end of each wire until  
no frayed ends remain.  
15. Attach the speaker wires to the speaker  
terminal connectors. Connect the  
negative output from the amplifier to the  
black terminal. Connect the positive  
output from the amplifier to the red  
terminal.  
Front Baffle Switches  
LST-CTR Acoustic Fine Tuning  
The front-mounted switches on the LST-CTR  
enable the speaker to be optimized  
regardless of positioning or room acoustics  
by providing 3dB of Treble Cut and 3dB of  
Dialog Enhancement. Start by listening to  
the speaker in the normal mode (switch is in  
the “out” position). If the sound seems to  
have too much treble, depress the switch  
labeled Treble Cut to reduce the amount of  
high frequencies.  
16. Set the speaker configuration switches  
on the rear of the speaker (see Setting  
the Speaker Configuration Settings).  
17. Install the speaker in the frame. Screw  
the enclosed self-tapping screws into  
the dimples of the speaker baffle as  
shown in Figure 2.  
18. Repeat steps 1-17 for each speaker  
being installed.  
If you desire to make dialog more  
pronounced, depress the switch labeled  
Dialog Enhance.  
19. After making tonal adjustments on all  
speakers (see Setting the Speaker  
Configuration Settings), install the grill  
into the speaker.  
LST-RLS Acoustic Fine Tuning  
The front-mounted switches on the LST-RLS  
also enable the speaker to be optimized  
regardless of positioning or room acoustics.  
They provide 3dB of Treble and Bass Cut  
respectively. Start by listening to the  
speaker in the normal mode (switch is in the  
out position). If the sound seems to have too  
much treble, depress the switch labeled  
Treble Cut to reduce the amount of high  
frequencies. If the sound has too much low  
frequency output (because it is placed near  
a corner perhaps) depress the switch  
labeled Bass Cut.  
SETTINGTHE SPEAKER  
CONFIGURATION SETTINGS  
Crossover Mounted Switches  
LST-CTR OAC Switch  
The crossover on the back of the LST-CTR  
enables you to defeat the Off-Axis  
Compensation (OAC) feature. Defeat OAC  
when the speaker is mounted at ear level  
directly in front of the primary listening  
position, as would be the case when the  
speaker is mounted behind a perforated  
projection TV screen.  
5
 
REMOVAL OF GRILLE  
Removing the Grille  
OPERATION  
Listening at Higher Volumes:  
Listening at Higher Volumes:  
If the grille is already installed, remove it by  
using a bent paper clip or the tip of a  
corkscrew and pulling it away from the  
frame. See Figure 4.  
It requires more power to achieve a  
reasonable volume of sound in a large room  
than it does in a small room. It is possible to  
turn the volume so high that the amplifier  
runs out of power. This creates “clipping”  
distortion.  
Clipping distortion makes treble sound  
very harsh and unmusical. When you hear  
harsh sounding treble from any good  
speaker, turn the volume down  
immediately! You are much less likely to  
damage a speaker with a large amplifier  
less likely to produce any clipping distortion.  
Figure 4  
PAINTINGTHE GRILLE  
AND FRAME  
Painting the Speaker Frame  
The speakers must be removed prior to  
painting the frames.  
Painting the Grilles:  
The grilles should be painted before they  
are installed on the speakers. The best  
results will be obtained by using a spray  
gun or airless sprayer. Thin the paint, and  
then apply several light coats. This  
technique helps prevent clogging of grille  
holes. Paint both sides of the grille to cover  
all the white paint.  
6
 
SPECIFICATIONS: LST-RLS  
Power handing:  
10 – 150 watts  
Frequency response:  
45Hz-21kHz +/- 3dB  
Impedance:  
8 ohms  
Dimensions:  
8-1/4” x 14-1/2” outside dimension  
7-1/8” x 13-1/4” hole cutout  
3-1/8” deep when installed in 1/2” drywall  
Warranty:  
5 year limited  
SPECIFICATIONS: LST-CTR  
Power handing:  
10 – 150 watts  
Frequency response:  
45Hz-21kHz +/- 3dB  
Impedance:  
8 ohms  
Dimensions:  
8-1/4” x 14-1/2” outside dimension  
7-1/8” x 13-1/4” hole cutout  
3-1/8” deep when installed in 1/2” drywall  
Warranty:  
5 year limited  
7
 
LIMITED WARRANTY  
A factory Return Authorization Number will  
be sent to you. DO NOT RETURN ANY  
UNIT WITHOUT FIRST RECEIVING  
WRITTEN AUTHORIZATION AND  
SHIPPING INSTRUCTIONS FROM  
JOBSITE.  
JobSite Systems (“JOBSITE”), a Niles  
Audio Corporation company, warrants its  
passive products (those not requiring AC or  
battery power) to the original purchaser to  
be free of manufacturing defects in material  
and workmanship for a period of ten years  
from date of purchase.  
If the above conditions are met, the  
purchaser’s sole remedy shall be to return  
the product to JOBSITE, in which case  
JOBSITE will repair or replace, at its sole  
option, the defective product without  
charge for parts or labor. JOBSITE will  
return the unit repaired or replaced under  
warranty by shipping it by its usual  
shipping method from the factory (only) at  
its expense within the United States of  
America. THERE ARE NO OTHER  
WARRANTIES, INCLUDING, WITHOUT  
LIMITATION, EITHER EXPRESS OR  
IMPLIED WARRANTIES OF  
MERCHANTABILITY OR FITNESS FOR A  
PARTICULAR PURPOSE, WITH RESPECT  
TO THE PRODUCT.  
JOBSITE warrants its passive loudspeaker  
products (those not requiring AC or battery  
power) to the original purchaser to be free  
of manufacturing defects in material and  
workmanship for a period of five years  
from date of purchase.  
JOBSITE warrants its indoor/outdoor  
loudspeaker products to the original  
purchaser to be free of manufacturing  
defects in material and workmanship for a  
period of two years from date of purchase.  
JOBSITE warrants its all weather rock  
loudspeaker products to the original  
purchaser to be free of manufacturing  
defects in material and workmanship for a  
period of five years from date of purchase.  
REPAIR OR REPLACEMENT AS PROVIDED  
UNDER THIS WARRANTY IS THE  
EXCLUSIVE REMEDY OF THE  
CONSUMER/PURCHASER. JOBSITE SHALL  
NOT BE RESPONSIBLE FOR ANY  
INCIDENTAL OR CONSEQUENTIAL  
DAMAGES EXCEPT TO THE EXTENT  
PROVIDED (OR PROHIBITED) BY  
APPLICABLE LAW.  
JOBSITE warrants its active products  
(those requiring AC or battery power) to  
the original purchaser to be free of  
manufacturing defects in material and  
workmanship for a period of two years  
from date of purchase.  
This Warranty is subject to the following  
additional conditions and limitations. The  
Warranty is void and inapplicable if  
JOBSITE deems that the product has been  
used or handled other than in accordance  
with the instructions provided by the  
manufacturer, including, but not limited to,  
damage caused by accident, mishandling,  
improper installation, abuse, negligence, or  
normal wear and tear, or any defect  
caused by repair to the product other than  
by JOBSITE or an authorized JOBSITE  
wholesale distributor.  
Some states do not allow the exclusion or  
limitation of incidental or consequential  
damages, so the above limitation may not  
apply to you. This warranty gives you  
specific legal rights, and you may also  
have other rights, which vary from state to  
state.  
For the name of the nearest authorized  
JOBSITE wholesale distributor, contact:  
JobSite Systems, a Niles Audio  
Corporation company  
To obtain warranty service, you must write  
to JOBSITE: Include your name, address,  
telephone number, model number and  
serial number of your unit, and a brief  
description of the problem.  
P.O. Box 160818, Miami, Florida 33116  
8
 
NOTES:  
9
 
JOBSITE SYSTEMS  
12331 S.W. 130 STREET, MIAMI, FLORIDA 33186  
P (866) 4JB-SITE (866-452-7483) – F (305) 238-0185  
WWW.JOBSITESYSTEMS.COM  
JobSite Systems, a Niles Audio Corporation company, 12331 S.W. 130 Street, Miami, Fl 33186. ©2004 Niles Audio Corporation. JobSite, Pure  
Custom, ElastoDynamic and Niles are registered trademarks of Niles Audio Corporation and the JobSite Logo is a trademark of Niles Audio  
Corporation. All other trademarks are the property of their respective owners. Some JobSite products (or components thereof) are manufac-  
tured under one or more U.S. Patents, foreign equivalents and/or pending patents (see product for details). Because we constantly strive to  
improve our products, JobSite reserves the right to change product specifications, descriptions, and prices without notice. The technical and  
other specifications of information contained herein are not intended to set forth all technical and other specifications of JobSite products.  
 

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