JobSite Systems Stereo Amplifier AB50 X2 User Manual

INSTALLATION & USER GUIDE  
For Powering Television  
Sound Through Distributed  
Audio Speakers  
 
AB50-X2  
STEREO AMPLIFIER / AUTOMATED SWITCHER  
FEATURES  
I Compact stereo amplifier with 50 watts per channel  
I Automatically switches between either one or two pairs of speakers  
I Stable into low impedance loads (4 ohms)  
I CE, CSA E65 UL6500 approved  
Installation friendly design:  
I 12V DC control output  
I Output gain control  
I 3V - 30V AC/DC voltage-trigger  
I Current sensing circuit  
I Automatic protection circuit  
1
 
PRODUCT OVERVIEW  
a) AC IN – Removable three-prong IEC compatible power cord.  
b) Current Sensing AC Outlet – AB50-X2 will activate and switch inputs when it senses a current draw from a  
connected device.  
c) Voltage Trigger IN – 3.5mm mini-phone jack. AB50-X2 will activate and switch inputs when 3-30 volts AC or  
DC is present.  
d) 12V Trigger OUT – 3.5mm mini-phone jack. 12V DC 200mA control output for automated control of lifts,  
screens, drapes, etc.  
e) Audio Line IN – Gold plated RCA type connectors. Local source input. AB50-X2 switches to this input in  
either current sense or 12V Trigger IN modes.  
f) Volume Control – Adjusts AB50-X2 amplifier output level.  
g) Speaker A Input/Output – Four-pin speaker connector plugs snap and lock for easy installation.  
h) Speaker B Input/Output – Four-pin speaker connector plugs snap and lock for easy installation.  
2
 
b
a
Figure 1  
AB50-X2  
DUAL INPUT  
2 CHANNEL AMPLIFIER  
INPUT  
L
OUT SPEAKER A IN  
OUT SPEAKER B IN  
LEVEL  
TRIGGERS  
R
3-30V AC/DC  
INPUT  
12VDC/  
OUTPUT  
Figure 2  
g
e
c
f
3
d
h
 
PACKAGE CONTENTS  
I No.2 Phillips screwdriver  
I Wire stripper  
I AB50-X2 x 1  
I Wire labels  
I Removable AC power cord x 1  
I Snap and lock removable speaker connectors x 4  
I Self adhesive rubber feet x 4  
INSTALLATION  
1. Select an appropriate location for the AB50-X2.  
2. Run all necessary wiring to the AB50-X2. Label the  
wires for future reference.  
PREPARING FOR INSTALLATION  
The local TV cables, Multizone Receiver cables and  
Speaker cables must reach the proposed location of  
the AB50-X2. Mark the cables with Wire labels,  
describing where the cables originate from, rather  
than where they will terminate. Locate a local un-  
switched AC outlet to be used to power the AB50-X2.  
3. Strip 1/4" of insulation from the end of each wire.  
Tightly twist the end of each wire until no frayed  
ends remain.  
4. Locate the Snap and Lock connectors and remove  
them if they are plugged in.  
Tools Required  
5. Use a small flathead screwdriver or your thumb to  
raise the locking tabs, exposing the holes on the  
connector.  
I 1/8" Slotted screwdriver  
I 1/4" Slotted screwdriver  
4
 
6. Insert each wire into the appropriate hole and  
snap down the locking tabs.  
13. Mount AB50-X2 to determined location.  
See figure 3.  
7. Insert the smooth side of the connector plug into  
the smooth side of the AB50-X2 socket.  
See Installation diagram on page 6.  
Figure 3  
8. Connect the variable line level output of the TV to  
the RCA terminals labeled INPUT.  
9. Connect the TV power cord to the terminal  
labeled CURRENT SENSING AC OUTLET.  
10. Connect the Multizone Receiver wires to the  
terminal labeled SPEAKER A IN.  
11. Connect the Speaker wires to the terminal  
labeled SPEAKER A OUT.  
12. Plug the AB50-X2 power cord into the un-  
switched AC outlet and adjust the current  
sensing, using the sensitivity adjustment screw  
located on the bottom of the unit.  
5
 
INSTALLATION DIAGRAM  
TROUBLESHOOTING  
AB50-X2 will not power up  
Check to see that the AB50-X2 is plugged into an  
unswitched outlet.  
Check to see that the POWER/ACTIVE LED is lit.  
AB50-X2 will not activate (Current Sense Mode)  
AB50-X2  
Make sure that the TV is plugged into the sensed  
outlet on the AB50-X2. May need to adjust sensitivity.  
To Current Sensing Outlet  
TV-Power  
Cord  
AB50-X2 will not activate (12V Trigger Mode)  
Measure the voltage on the TRIGGER IN terminal.  
The voltage must be 3-30 VAC/DC to activate the  
AB50-X2.  
AB50-X2  
Right/  
Left  
TV Variable  
Line Out  
Check the polarity of 3.5mm mini-plug correct.  
(Tip=+12VDC; Sleeve=ground. DC only)  
Left  
Right  
M-64 MULTI-ZONE RECEIVER  
6
Multizone Receiver  
Speakers  
 
SPECIFICATIONS  
LIMITED WARRANTY  
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.  
50 watts x 2  
Frequency response:  
5 Hz to 50kHz +/- 3dB  
Signal noise ratio:  
>= 85 dB  
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.  
Power supply:  
AC120V, 60 Hz  
Power consumption:  
2 amps  
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.  
Dimensions:  
8" wide x 2-1/4" high (including feet) x 7-1/2" deep  
Warranty:  
2 years limited  
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.  
7
 
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.  
NOT RETURN ANY UNIT WITHOUT FIRST  
RECEIVING WRITTEN AUTHORIZATION AND  
SHIPPING INSTRUCTIONS FROM JOBSITE.  
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.  
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.  
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. A factory  
Return Authorization Number will be sent to you. DO  
REPAIR OR REPLACEMENT AS PROVIDED UNDER  
THIS WARRANTY IS THE EXCLUSIVE REMEDY OF  
THE CONSUMER/PURCHASER. NILES SHALL NOT  
BE RESPONSIBLE FOR ANY INCIDENTAL OR  
8
 
CONSEQUENTIAL DAMAGES EXCEPT TO THE  
EXTENT PROVIDED (OR PROHIBITED) BY  
APPLICABLE LAW.  
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  
12331 S.W. 130 Street, Miami, Florida 33186  
WWW.JOBSITESYSTEMS.COM  
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  
© 2004 JobSite Systems. All rights reserved. JobSite, Pure Custom 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 manufactured 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. Additional  
information can be obtained at WWW.JOBSITESYSTEMS.COM or by calling JobSite at 866.452.7483. Printed in Canada. 7/04 DS00394BCA  
 

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