JobSite Systems A30-X12 User's Manual
Contents
1. NOTE This piece of equipment is not completely disconnected from the main power source when the Master Power Switch is in the OFF position To com pletely disconnect unit from AC gt power remove the removable AC Power Cord Cascade outputs of the main bus input enable you to daisy Main Bus Inputs enable you chain multiple amplifiers to route a stereo line level source to the BusMatrix of the A30 X12 Turn 0n Mode Switch 3 5 mm Jack for 3 5 mm Jack for 12v DC Control Input 12v DC Control Output Red protect LED Attractive extruded ry indicates a fault aluminum front panel g condition D C output A30 X12 12 CHANNEL Pr I Bridging switches BusMatrix controls dedicated Gold plated inputs and level controls for each channel RCA jacks Dual banana spaced binding Removable Two prong posts for speaker connections 16 gauge 6 AC power cord 3 PACKAGE CONTENTS A30 X12 x 1 Removable AC power cord x 1 PREPARING FOR INSTALLATION Place the A30 X12 on a flat level surface like a table or shelf It should be placed upright so that its weight rests on the four attached feet Placing the weight of the amplifier on the rear or front panel may result in damage to the amplifier s connectors and controls Figure 1 VIZ LLL LLL H Make sure that there is a minimum of 5 of2. INSTALLATION amp USER GUIDE Jobsite PURE CUSTOM For Powering Distributed Audio Systems 12 CHANNEL POWER AMPLIFIER A30 X1 2 A30 X12 12 CHANNEL POWER AMPLIFIER TABLE OF CONTENTS Features a a a at 1 Product OI UE H Package Contents ii 4 Preparing for Installation sssssssssssssssessssseesseesssssesssessseesesssesseeanseseesseeeneentseseensee 4 Installation la 6 UE 7 UGEDON 8 Configuration Worksheet reel 9 Specifications a 10 Warranty eener da 100 11 FEATURES 12 independent amplifiers with 30 watts per channel Assignable buss and dedicated input for each channel Multiple turn on modes Adjacent bridgeable channels 80 watts Stable into low impedance loads 2 66 ohms CSA listed and tested under UL6500 standards Installation friendly design 12V DC control output Individual input gain controls for each channel 3V 30V AC DC voltage trigger Cascading outputs Automatic protection circuit with front panel indicator 5 way gold plated binding posts for all speaker outputs Gold plated RCA jacks PRODUCT OVERVIEW Red Power LED confirms the amplifier is connected Green Active LED lights to a live AC power outlet and that the front panel when the amplifier circuit master power switch is on has been turned on by th Turn On circuits Front panel Master Power switch turns off the entire amplifier including the auto turn on circuitry
3. 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 11 NOTES NOTES 13 Jobsite PURE CUSTOM 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 int
4. ended 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 Malaysia 7 04 DS00373BMY
5. eptacle is working If the outlet tests O K the internal fuses are blown Return the amplifier to your dealer for service Sound is distorted on one or all of the channels at normal volumes BusMatrix DIP switches are not in the correct positions Check your configuration worksheet and verify all settings Normal volume cannot be reached One of the internal amplifier fuses is blown Return the amplifier to your dealer for service Bass sound is weak and the stereo image is phasey sounding in one room Check that the bridging switch is Off If two adjacent channels are connected normally but the bridging switch is set to the Bridged position the two speakers will play out of phase with each other The loudspeakers are wired out of phase Reverse the connections at the back of one speaker CONFIGURATION WORKSHEET BUS INS amp OUTS Left Main Bus CONNECTED TO Right Main Bus Cascade Output CH BRIDGED INPUT SOURCE SPEAKER 2 3 4 5 6 7 8 9 MODE SETTINGS Constant SPECIAL CONNECTIONS OR NOTES Audio Sense Voltage Trigger Control Output 10 SPECIFICATIONS Power handing 30 watts x 12 Frequency response 5 Hz to 50 kHz 3dB Signal noise ratio gt 85 dB Power supply AC120V 60 Hz Power consumption 9 amps Dimensio
6. free air space above the amplifier and 3 on each side for proper ventilation VL LLL LLL Allow a minimum of 2 of depth behind unit to accommodate cables and connectors The A30 X12 like any hi fi component will last much longer if it is given adequate ventilation for proper cooling When installing the A30 X12 in a cabinet be sure that the rear of the cabinet is open to fresh air to provide proper cooling see Figure 1 If the cabinet s design will not accommodate an open rear install two small boxer fans to provide continuous airflow into and out of the cabinet see Figure 2 Place the A30 X12 so that there is at least 5 of free air space above the chassis If the amplifier is located on a carpeted surface place a board under the amplifier s feet Do not block the ventilation holes on the top and bottom of the A30 X12 Figure 2 If the cabinet rear is not open to fresh air install two small boxer fans to provide continuous air flow into and out of the cabinet COLILILIILILLILLLLELLLLLELLELAG LLL ELL LL ELL LLL LS LLE d sl p e e D Ve E Turn On Modes The Turn On Mode selector switch gives you three options for turning the A30 X12 on and off See figure 5 TURN ON MODE AUDIO SENSE 3 30V AC DC TI rriccer INPUT Constant The auto turn on circuitry is off The front panel master power switch operates the amplifier In is On out i
7. ks Connect them to another amplifier s inputs with a standard audio patch cable The outputs are not buffered if you wish to daisy chain more than 3 JobSite amplifiers you will need a buffered distribution amplifier Level Adjustment Knobs The rear panel level adjustment knobs allow you to adjust the maximum output level of any channel individually OPERATION Power LED The power LED indicates that the AC cord is plugged into a working AC power receptacle and that the power switch is in the On position Active LED The rear panel turn on mode switch determines when and how the amplifier will turn on The Active LED indicates that the amplifier is on Power Switch The front panel switch is a master or vacation power switch No matter which turn on mode you have selected the master power switch will turn off all circuitry including the sensing circuitry If you are going on vacation and or would like to reduce power consumption while you are away turn the master power switch off push the rocker switch out When you would like to return to normal operation turn the switch On push the rocker switch in NOTE This piece of equipment is not completely disconnected from the main power source when the Master Power Switch is in the OFF position To completely disconnect unit from AC power remove the removable AC Power Cord D C Protection In the event a damaging D C signal becomes present on a
8. ns 17 wide x 5 1 2 high including feet x 15 deep Warranty 2 year limited 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 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 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
9. ny of the speaker terminals the D C protection circuit shuts down the entire amplifier and the red LED labeled Protection illuminates To reset the amplifier you must turn the front panel power switch off and then on Listening at Higher Volumes Thirty watts is enough power to play a conventional speaker in a normal sized room loudly enough to completely drown out conversation Even at levels like that the A30 X12 will sound clear and clean However 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 If you continue to operate the amplifier at clipping power levels the protection circuits will operate when the amplifier overheats The protection circuits reset when the amplifier s internal circuitry cools Reduce the volume to prevent a reoccurrence Perpetually overdriving your speakers and amplifier is abuse and probably voids the manufacturer s warranty of all affected products TROUBLESHOOTING No sound on one channel BusMatrix DIP switch is not in the correct position Check your configuration worksheet for the correct setting and verify You could have a short circuit
10. of the arrow to bridge two adjacent amplifier channels Set the BRIDGED LEVEL USECH2 WHEN BRIDGED 1 Cl nn EN m o fe controls of the pus E r DU E e newly bridged pair a am 2 by using the EVEN numbered channel BRIDGED BRIDGED 4 OO BusMatrix Input Switch Setting When two channels are bridged together connect speakers to the two terminals labeled Bridged Each channel has a dedicated BusMatrix DIP switch that assigns that channel s source To assign a signal from the Main Bus Input select one of the first three switches which will give you Left L Right R or Mono L R To assign the channel s dedicated input select the fourth switch Only ONE switch should be selected to the ON position OFF Position ON Position PS SE L BUS DI R Lu om L R CH 1 Configuring Your System Because the A30 X12 offers so many configuration possibilities it is important to plan carefully before you install it Draw a block diagram of your system and use the Configuration Worksheet on page 7 to record how you plan to connect your A30 X12 Here is an example filled out according to the block diagram on page 7 Mark the cables with Wire labels describing where the cables originate from rather than where they will terminate Tools Required 1 8 Slotted screwdriver Wire stripper Wire labels INSTALLATION Comple
11. or loose wire at speaker or amplifier terminals Check that connections are secure and that there are no loose strands of wire crossing from the positive to the negative terminal at the back of the amplifier and the speaker Audio cable to dedicated input is bad Connect the non working channel input to another cable that is known to be good Bridging Switch is in the wrong position Check your configuration worksheet for the correct setting and verify The thermal protection circuit has operated because of overheating caused by overdriving or inadequate ventilation No sound on some or all channels BusMatrix DIP switches are not in the correct positions Check your configuration worksheet and verify all settings Audio cable to the main bus inputs is bad Connect the non working channel input to another cable that is known to be good Some or all of the internal amplifier fuses are blown Return the amplifier to your dealer for service Hum from all of the speakers Hum may be caused by a ground loop between two components in the system To test for a ground loop try reversing the ac plugs of each of the components in the system that has non polarized plugs Check for faulty cables faulty source material an ungrounded phono system cable TV feed or a defective component Amp will not turn on AC power cord must be plugged into a working outlet Master power switch must be on Test that the AC power rec
12. 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 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 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 CONSEQUENTIAL DAMAGES EXCEPT TO THE EXTENT PROVIDED OR PROHIBITED
13. s Off CONSTANT Slide the switch with your fingernail or a 1 8 slotted screwdriver blade Figure 5 Audio Sense The master switch on the front panel must be in the On position The amplifier is off when there is no audio signal present at either the left or the right input but the sensing circuitry is on The turn on sensing circuitry looks for a tiny amount of audio signal present at any of the audio inputs If it detects a signal the amplifier is turned on Once the audio signal stops the sensing circuit waits three minutes then turns the amplifier off 3 30 Volt AC DC Trigger Input The master switch on the front panel must be in the On position The amplifier is off when there is no 3 30V AC or DC voltage detected at the trigger input Once the sensing circuitry detects a voltage and a line level audio signal is detected at the input the amplifier is turned on Once the voltage stops the sensing circuit instantly turns the amplifier off Voltage trigger can be supplied by connecting a 12 Volt AC wall adapter to the switched outlet of your stereo receiver DO NOT USE A DC WALL ADAPTER The long discharge time of the DC adapter s filter capacitor will delay the turn off of the amplifier Bridging Two Channels into One The A30 X12 s bridging switches allow you to create a more powerful amplifier channel by combining or bridging two adjacent channels Slide the bridging switch in the direction
14. te configuration worksheet 1 Select an appropriate location for the A30 X12 2 Run all the necessary wiring to the A30 X12 Label the wires for future reference 3 Strip 1 4 of insulation from the end of each speaker wire Tightly twist the end of each wire until no frayed ends remain 4 Unscrew the Red and Black speaker wire connectors 5 Insert each wire into the predetermined Speaker Outputs using the configuration worksheet as the guide Tighten the connector until the wire is securely clamped 6 Connect the Pre Amplifier or Receiver to the predetermined Channel Inputs using the configuration worksheet as the guide 7 Set the BusMatrix input switch setting for each channel 8 Set the position of the Turn On Mode switch Connect 12 Volt source if applicable 9 Connect the AC power cord to the A30 X12 and then plug it into an Un switched AC outlet 10 Turn the Master Power switch on The switch is located on the front panel of amplifier Control Output This terminal provides a 12 Volt DC signal suitable for triggering automated switchers motorized screens some electric curtain controls etc The trigger voltage is present only when the amplifier is active or on When the amplifier turns off the 12Volt signal is off Cascade Audio Outputs The Cascade Audio Outputs enable you to connect another amplifier to your preamplifier output The connectors are gold plated RCA phono jac
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