USER MANUAL - Keene Electronics
Contents
1. KRAMER ELECTRONICS LTD USER MANUAL MODEL 907 xI Power Amplifier Mixer P N 2900 300028 Rev 1 907xI Quick Start Guide This page guides you through a basic installation and first time use of your 907xtI For more detailed information see the 907x User Manual You can download the latest manual at http www kramerelectronics com Step 1 Check what s in the box A 907xI Power Amplifier Mixer K 1 Quick Start sheet 1 Power supply 24V DC ZE User Manual 4 Rubber feet Step 2 Install the 907xl Mount the machine in a rack using the RK 1 rack adapter or place on a table Step 3 Connect the inputs and outputs Step 4 Connect the power Connect the 24V DC power adapter to the 907xlI and plug the adapter into the mains electricity Step 5 Operate the 907xl PUT 1 Level ipu 2 LEVEL O 7 Mute the output by pressing the MUTE button Adjust the gain for each input using the DIP switches Contents 1 Introduction 2 Getting Started 2 1 Achieving the Best Performance 3 Overview 3 1 Defining the 907xI Power Amplifier Mixer 4 Connecting the 907xI Power Amplifier Mixer 4 1 Connecting the Stereo Audio Input 5 Technical Specifications Figures Figure 1 907xIl Power Amplifier Mixer Figure 2 Connecting the 907xI Power Amplifier Mixer Figure 3 Connecting the Balanced Stereo Audio Input Figure 4 Connecting the Unbalanced Stereo Audio Input N O1 W2. consequential or otherwise Some countries may not allow limitations on how long an implied warranty lasts and or do not allow the exclusion or limitation of incidental or consequential damages so the above limitations and exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from place to place NOTE All products returned to Kramer for service must have prior approval This may be obtained from your dealer This equipment has been tested to determine compliance with the requirements of EN 50081 Electromagnetic compatibility EMC generic emission standard Part 1 Residential commercial and light industry EN 50082 Electromagnetic compatibility EMC generic immunity standard Part 1 Residential commercial and light industry environment CFR 47 FCC Rules and Regulations Part 15 Radio frequency devices Subpart B Unintentional radiators CAUTION E Servicing the machines can only be done by an authorized Kramer technician Any user who makes changes or modifications to the unit without the expressed approval of the manufacturer will void user authority to operate the equipment E Use the supplied DC power supply to feed power to the machine E Please use recommended interconnection cables to connect the machine to other components FCC and CE approved using STP cable for twisted pair products For the latest information on our products and a list o
3. 6 Adjust the output volume by turning the VOLUME potentiometer Stereo Audio Stereo Audio Player Player Speakers Figure 2 Connecting the 907xI Power Amplifier Mixer 4 1 Connecting the Stereo Audio Input Figure 3 and Figure 4 illustrate how to wire a balanced unbalanced input connection Gt Figure 3 Connecting the Balanced Stereo Audio Input Figure 4 Connecting the Unbalanced Stereo Audio Input 907xI Connecting the 907xI Power Amplifier Mixer 5 Technical Specifications 1 unbalanced stereo audio on RCA connectors OUTPUT OUTPUT POWER OUTPUT MUSIC POWER INPUT SENSITIVITY AMPLIFIER TYPE VOLTAGE GAIN BANDWIDTH 34B SIN RATIO COUPLING Inputs AC Outputs DC AUDIO THD NOISE 1 2 AUDIO 2nd HARMONIC POWER SOURCE 24V DC 2A CONTROLS 2 gain DIP switches mute button 2 input level Knobs 1 volume knob OPERATING TEMPERATURE 0 to 55 C 32 to 131 F STORAGE TEMPERATURE 45 to 72 C 49 to 162 F HUMIDITY 10 to 90 RHL non condensing DIMENSIONS 10 7cm x 10 4cm x 4 0cm 4 2 x 4 1 x 1 6 W D H WEIGHT 0 32kg 0 7lbs ACCESSORIES Power supply OPTIONS RK 1 19 rack mount adapter Specifications are subject to change without notice at http www kramerelectronics com LIMITED WARRANTY We warrant this product free from defects in material and
4. DC power 3 1 Defining the 907xI Power Amplifier Mixer This section defines the 907xl Figure 1 907xI Power Amplifier Mixer Feature Function INPUT 1 RCA Connectors Connect to an unbalanced stereo audio source 2 INPUT 2 Terminal Block Connect to a balanced stereo audio source Connector 3 OUTPUT Terminal Block Connect to a balanced stereo acceptor speakers Connector 4 GAIN DIP switches 4 position switch for setting the basic gain level 5 24V DC for powering the unit 7 10 n 4 Connecting the 907xI Power Amplifier Mixer To connect the 907xI as illustrated in the example in Figure 2 Always switch off the power to each device before connecting it to your 907xI After connecting your 907xI connect its power and then switch on the power to each device 1 Connect the unbalanced stereo audio source for example a stereo audio player to the INPUT 1 RCA connectors 2 Connect the balanced stereo audio source for example a stereo audio player to the INPUT 2 terminal block connector 3 Connect the OUTPUT terminal block connectors to the acceptors a pair of speakers Do not ground the loudspeakers 4 Connect the 24V DC power adapter to the power socket and connect the adapter to the mains electricity not shown in Figure 2 5 If necessary adjust the basic volume level by setting the GAIN DIP switches as shown here DIP Switch Gain Levels Switch eof E Gain 20dB 26dB 32dB 36dB
5. WILL NOT PAY FOR We will pay labor and material expenses for covered items We will not pay for the following 1 Removalor installations charges 2 Costs of initial technical adjustments set up including adjustment of user controls or programming These costs are the responsibility of the Kramer dealer from whom the product was purchased 3 Shipping charges HOW YOU CAN GET WARRANTY SERVICE 1 To obtain service on you product you must take or ship it prepaid to any authorized Kramer service center 2 Whenever warranty service is required the original dated invoice or a copy must be presented as proof of warranty coverage and should be included in any shipment of the product Please also include in any mailing a contact name company address and a description of the problem s 3 For the name of the nearest Kramer authorized service center consult your authorized dealer LIMITATION OFIMPLIED WARRANTIES All implied warranties including warranties of merchantability and fitness for a particular purpose are limited in duration to the length of this warranty EXCLUSION OF DAMAGES The liability of Kramer for any effective products is limited to the repair or replacement of the product at our option Kramer shall not be liable for 1 Damage to other property caused by defects in this product damages based upon inconvenience loss of use of the product loss of time commercial loss or 2 Any other damages whether incidental
6. chine upgrades are available where appropriate Caution No operator serviceable parts inside the unit Go to http www kramerelectronics com to check for up to date user manuals application programs and to check if firmware Warning Use only the Kramer Electronics input power wall adapter that is provided with the unit Warning Disconnect the power and unplug the unit from the wall before installing 2 1 Achieving the Best Performance To achieve the best performance Use only good quality connection cables to avoid interference deterioration in signal quality due to poor matching and elevated noise levels often associated with low quality cables Avoid interference from neighboring electrical appliances that may adversely influence signal quality Position your Kramer 907xl away from moisture excessive sunlight and dust 3 Overview The Kramer Multi OOLS 907xI is a high performance 40W RMS per channel Class D power amplifier mixer for line level stereo audio signals It accepts a balanced stereo audio signal on a terminal block connector It delivers 150 watts per channel of music output to the speakers The 907xI features e One unbalanced stereo audio input on RCA connectors e One balanced stereo audio input on a terminal block connector e Input volume adjustment for each input for mixing capability e One speaker output on a terminal block connector e Gain control DIP switches e A mute button e 24V
7. f Kramer distributors visit our Web site where updates to this user manual may be found We welcome your questions comments and feedback Web site www kramerelectronics com E mail info kramerel com SAFETY WARNING Disconnect the unit from the power supply before opening and servicing
8. wW MND OOO f Introduction Welcome to Kramer Electronics Since 1981 Kramer Electronics has been providing a world of unique creative and affordable solutions to the vast range of problems that confront the video audio presentation and broadcasting professional on a daily basis In recent years we have redesigned and upgraded most of our line making the best even better Our 1 000 plus different models now appear in 11 groups that are clearly defined by function GROUP 1 Distribution Amplifiers GROUP 2 Switchers and Matrix Switchers GROUP 3 Control Systems GROUP 4 Format Standards Converters GROUP 5 Range Extenders and Repeaters GROUP 6 Specialty AV Products GROUP 7 Scan Converters and Scalers GROUP 8 Cables and Connectors GROUP 9 Room Connectivity GROUP 10 Accessories and Rack Adapters and GROUP 11 Sierra Products Congratulations on purchasing your Kramer 907xI Power Amplifier Mixer which is ideal for the following typical applications e Presentation rooms and multimedia applications for quick local audio amplification e Personal audio listening for example a PC and portable CD player 2 Getting Started We recommend that you Unpack the equipment carefully and save the original box and packaging materials for possible future shipment Review the contents of this user manual Use Kramer high performance high resolution cables Use only the power cord that is supplied with this ma
9. workmanship under the following terms HOW LONGIS THE WARRANTY Labor and parts are warranted for seven years from the date of the first customer purchase WHOISPROTECTED Only the first purchase customer may enforce this warranty WHAT IS COVERED AND WHAT IS NOT COVERED Except as below this warranty covers all defects in material or workmanship in this product The following are not covered by the warranty 1 Any product which is not distributed by us or which is not purchased from an authorized Kramer dealer If you are uncertain as to whether a dealer is authorized please contact Kramer at one of the agents listed in the Web site www kramerelectronics com 2 Any product on which the serial number has been defaced modified or removed or on which the WARRANTY VOID IF TAMPERED sticker has been torn reattached removed or otherwise interfered with 3 Damage deterioration or malfunction resulting from i Accident misuse abuse neglect fire water lightning or other acts of nature ii Product modification or failure to follow instructions supplied with the product iii Repair or attempted repair by anyone not authorized by Kramer iv Any shipment of the product claims must be presented to the carrier v Removal orinstallation of the product vi Any other cause which does not relate to a product defect vii Cartons equipment enclosures cables or accessories used in conjunction with the product WHAT WE WILL PAY FOR AND WHAT WE
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