Kramer Electronics VM-1120 audio amplifier
Contents
1. 3dB gt 100kHz S N RATIO 89 3dB CROSSTALK 78dB CONTROLS Level x4 0 7dB to 5 1dB mode selector switches COUPLING AC input DC output AUDIO THD NOISE 0 081 AUDIO 2nd HARMONIC 0 006 POWER SOURCE 230V AC 115V AC U S A 15VA DIMENSIONS 19 x 7 x2U W D H rack mountable WEIGHT 3 5kg 7 7lbs approx ACCESSORIES Power cord rack ears 1 Specifications are subject to change without notice 12 KRAMER SIMPLE CREATIVE TECHNOLOGY LIMITED WARRANTY Kramer Electronics hereafter Kramer warrants this product free from defects in material and 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 WHOIS PROTECTED 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 Kramer 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 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 reatta2. 60Hz 115V AC U S A power inlet 11 Power Switch Turns the unit ON and OFF 1 Splits inputs A and B to outputs 1A 5A and 1B 5B respectively 2 Splits input A to all 10 outputs 3 Insert a screwdriver into the small hole and carefully rotate it trimming the OUTPUT level Installing the VM 1120 in a Rack 5 Installing the VM 1120 in a Rack This section describes how to install the VM 1120 in a rack Before Installing in a rack How to Rack Mount Before installing in a rack be sure that the environment is within the recommended range Operating temperature range 5 to 45 C 41 to 113 F Operating humidity range 10 to 90 RHL non condensing Storage temperature range 20 to 70 C 4 to 158 F Storage humidity range 5 to 95 RHL non condensing CAUTION When installing on a 19 rack avoid hazards by taking care that 1 It is located within the recommended environmental conditions as the operating ambient temperature of a closed or multi unit rack assembly may exceed the room ambient temperature Once rack mounted enough air will still flow around the machine To rack mount a machine 1 Attach both ear brackets to the machine To do so remove the screws from each side of the machine 3 on each side and replace those screws through the ear brackets Ee Place the ears of the machine against the rack
3. commercial and light industry environment CFR 47 FCC Rules and Regulations Part 15 Radio frequency devices Subpart B Unintentional radiators CAUTION amp 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 Use the supplied DC power supply to feed power to the machine Please use recommended interconnection cables to connect the machine to other components FCC and CE approved using STP cable for twisted pair products 13 For the latest information on our products and a list of Kramer distributors visit our Web site www kramerelectronics com where updates to this user manual may be found We welcome your questions comments and feedback Safety Warning Disconnect the unit from the power supply before opening servicing Caution 9001 sq hwy oe Institute of N Quality amp Control P N 2900 001029 Rev II Kramer Electronics Ltd Web site www kramerelectronics com E mail info kramerel com P N 2900 001029 REV 3
4. s For the name of the nearest Kramer authorized service center consult your authorized dealer MITATION OF IMPLIED 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 Any other damages whether incidental 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
5. A Lal Lal Recorder 5A Stereo Audio Stereo Audio s Stereo Audio Player B Recorder 1B Recorder 5B Figure 5 2x1 5 Stereo DA Configuration KRAMER SIMPLE CREATIVE TECHNOLOGY Setting the VM 1120 7 Setting the VM 1120 Figure 6 illustrates how the selector button works when two inputs are connected to one channel LEFT A B Selector button released gt Esso LEVEL A N E ens WWD oo SS00006 INPUTA INPUT B our 1A our 1B OUT 28 our 28 our 3A our 3B OUT 4a our4e OUT SA our SB LEFT A B Luo Leve ER AN Selector button pressed p 2x1 5 B A DOHC Figure 6 Using the Selector Button Note the following when using the VM 1120 e The left and right channels are not connected Left inputs only distribute to left outputs and right inputs only distribute to right outputs e Only the A input can distribute to 10 outputs The B input only distributes to the 5 B outputs If necessary adjust the volume on the outputs by turning the LEVEL A and B potentiometers using a small screwdriver 11 Technical Specifications Technical Specifications The VM 1120 technical specifications are shown in Table 3 Table 3 VM 1120 Technical Specifications INPUTS 4 balanced audio 4dBu 50kQ on XLR F connectors OUTPUTS 20 balanced audio 4dBu 500 on XLR M connectors MAX OUTPUT LEVEL gt 26dBu BANDWIDTH
6. Kramer Electronics Ltd USER MANUAL Model VM 1120 1 10 Balanced Stereo Audio Distributor Contents Contents 1 Introduction 2 Getting Started 2 1 Quick Start 3 Overview 4 Your Balanced Stereo Audio Distributor 5 Installing the VM 1120 in a Rack 6 Connecting Your Balanced Stereo Audio Distributor 6 1 Connecting a 1 20 Mono DA 6 2 Connecting a 2x1 10 Mono DA 6 3 Connecting a 1 10 Stereo DA 6 4 Connecting a 2x1 5 Stereo DA 7 Setting the VM 1120 8 Technical Specifications Figures Figure 1 VM 1120 1 10 Balanced Stereo Audio Distributor Figure 2 1 20 Mono DA Configuration Figure 3 2x1 10 Mono DA Configuration Figure 4 1 10 Stereo DA Configuration Figure 5 2x1 5 Stereo DA Configuration Figure 6 Using the Selector Button Tables Table 1 Front Panel VM 1120 1 10 Balanced Stereo Audio Distributor Features Table 2 Rear Panel VM 1120 1 10 Balanced Stereo Audio Distributor Features Table 3 VM 1120 Technical Specifications SOIS A LO VON i ci m pd ja 12 Introduction 1 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 th
7. at are clearly defined by function Thank you for purchasing your Kramer VM 1120 7 70 Balanced Stereo Audio Distributor This product is ideal for the following typical applications e Audio duplication and production studios delivering undiminished quality duplicates e Recording studios e Broadcast studios for on line signal distribution The package includes the following items e VM 1120 7 10 Balanced Stereo Audio Distributor e Power cord e This user manual 2 Getting Started We recommend that you e Unpack the equipment carefully and save the original box and packaging materials for possible future shipment e Review the contents of this user manual e Use Kramer high performance high resolution cables 1 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 GROUP 11 Sierra Products 2 We recommend that you use only the power cord supplied with this device 3 Download up to date Kramer user manuals from our Web site at http www kramerelectronics com 4 The complete list of Kramer cables is on our Web site at http www kramerelectronics com 1 Getting Started 2 1 Quick Start This quick start chart summarizes th
8. ched removed or otherwise interfered with 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 Removalor installation 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 WILLNOT PAY FOR We will pay labor and material expenses for covered items We will not pay for the following de Di 3 Removal or installations charges 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 Shipping charges HOW YOU CAN GET WARRANTY SERVICE 1 Di 3 LI To obtain service on you product you must take or ship it prepaid to any authorized Kramer service center 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
9. e basic setup and operation steps Step 1 Mount the machine see section 5 Mount the machine in a rack or stick the 4 rubber feet to the underside Audio 2 CH Audio Player Mono Audio Mono Audio Recorder 1 Recorder 20 Step 3 Set the machine see section 7 LEFT A B Selector but button gt Pari Na released mois s 1 GHOHOOOOO Lert fi 10 toe A Selector button mos e ssed li lt A Step 4 Turn the power ON 2 KRAMER SIMPLE CREATIVE TECHNOLOGY Overview Overview The VM 1120 is a high performance balanced stereo audio DA distribution amplifier using XLR connectors that includes e Front panel output level trimmer controls e Active J FET amplifying circuitry that ensures hum free full bandwidth operation e A high power discrete buffering system providing excellent performance You can configure your VM 1120 as a mono DA 2x1 10 or 1 20 or as a stereo DA 2x1 5 or 1 10 Achieving the best performance means e Connecting only good quality connection cables thus avoiding interference deterioration in signal quality due to poor matching and elevated noise levels often associated with low quality cables e Avoiding interference from neighboring electrical appliances that may adversely influence signal quality e Positioning your Kramer VM 1120 in a location free from moisture and away from excessive sunlight and dust Your Balanced Stereo Audio Distributor Fig
10. ors for example mono audio recorders 1A to 10A to any of the LEFT OUTPUT connectors 3 Connect mono audio source for example a mono audio player B to RIGHT INPUT A 4 Connect up to 10 mono audio acceptors for example mono audio recorders 1B to 10B to any of the RIGHT OUTPUT connectors Release the LEFT and RIGHT selector buttons 1 10 2x1 5 to select 1 10 Connect the power cord to the electricity supply Switch on the VM 1120 The audio input s is are distributed to the audio outputs P Release LEFT and RIGHT e 2x1 5 selector buttons LEFT LEVEL iso B A 2x1 5 RIGHT LEVEL B A M Audi Mono Audio Mono Audio Player A o Recorder 1A Se Recorder 10A Mono Audio Mono Audio Mono Audio Player B Recorder 1B m Recorder 10B Figure 3 2x1 10 Mono DA Configuration 8 KRAMER SIMPLE CREATIVE TECHNOLOGY Connecting Your Balanced Stereo Audio Distributor 6 3 Connecting a 1 10 Stereo DA To configure a 1 20 stereo DA as illustrated in Figure 4 do the following 1 Connectastereo audio source for example a stereo audio player to LEFT INPUT A and RIGHT INPUT A 2 Connect up to 10 stereo audio acceptors for example stereo audio recorders 1 to 10 to the LEFT and RIGHT channels of any of the OUTPUT connectors 3 Release the LEFT and RIGHT selector buttons 1 10 2x1 5 to select 1 10 Connect the power cord to the electricity s
11. rails and insert the proper screws not provided 3 The machine is placed straight in the correct through each of the four holes in the horizontal position rack ears 4 You do not overload the circuit s When connecting Note that the machine to the supply circuit overloading the e In some models the front panel circuits might have a detrimental effect on overcurrent may feature built in rack ears protection and supply wiring Refer to the appropriate e Detachable rack ears can be nameplate ratings for information For example for removed for desktop use fuse replacement see the value printed on the e Always mount the machine in the product label rack before you attach any cables 5 The machine is earthed grounded in a reliable way or connect the machine to the and is connected only to an electricity socket with power grounding Pay particular attention to situations where e If you are using a Kramer rack electricity is supplied indirectly when the power cord adapter kit for a machine that is not is not plugged directly into the socket in the wall for 19 see the Rack Adapters user example when using an extension cable or a power manual for installation instructions strip and that you use only the power cord that is you can download it at supplied with the machine http www kramerelectronics com 6 Connecting Your Balanced Stereo Audio Distributor You can easily connect the following configurations e 1 20 mono DA see
12. section 6 1 e 2x1 10 mono DA see section 6 2 e 1 10 stereo DA see section 6 3 e 2x1 5 stereo DA see section 6 4 KRAMER SIMPLE CREATIVE TECHNOLOGY Connecting Your Balanced Stereo Audio Distributor 6 1 Connecting a 1 20 Mono DA To configure a 1 20 mono DA as illustrated in Figure 2 do the following 1 Connect a source for example an audio player to LEFT INPUT A and RIGHT INPUT A 2 Connect up to 20 mono audio acceptors for example mono audio recorders to any of the OUTPUT connectors 3 Release the LEFT and RIGHT selector buttons 1 10 2x1 5 to select 1 10 Connect the power cord to the electricity supply 5 Switch on the VM 1120 The audio input s is are distributed to the audio outputs LEFT RIGHT _T gt FE LeveL re Level B A A Release LEFT and RIGHT e 2x1 5 om 2x15 B selector buttons O 0 O curia ourza outas Audio Mono Audio Mono Audio Player Recorder 1 Recorder 19 Mono Audio Mono Audio Recorder 2 Recorder 20 Figure 2 1 20 Mono DA Configuration 1 With 2 identical outputs or via a 1 2 splitter 7 Connecting Your Balanced Stereo Audio Distributor 6 2 Connecting a 2x1 10 Mono DA To configure a 2x1 10 mono DA as illustrated in Figure 3 do the following 1 Connect mono audio source for example a mono audio player A to LEFT INPUT A 2 Connect up to 10 mono audio accept
13. upply 5 Switch on the VM 1120 The audio input s is are distributed to the audio outputs P LeveL A Release LEFT and RIGHT 2x1 5 B selector buttons LEFT RIGHT LEVEL so A nm 2x1 5 B oO 8 g Stereo Audio Stereo Audio Stereo Audio Player Recorder 1 Recorder 10 Figure 4 1 10 Stereo DA Configuration Connecting Your Balanced Stereo Audio Distributor 6 4 Connecting a 2x1 5 Stereo DA To configure a 2x1 5 stereo DA as illustrated in Figure 5 do the following 1 Connect a stereo audio source for example a stereo audio player A to LEFT and RIGHT INPUT A 2 Connect up to 5 stereo audio acceptors for example mono audio recorders 1A to 5A to any of the LEFT and RIGHT A OUTPUT connectors 3 Connect a stereo audio source for example a stereo audio player B to LEFT and RIGHT INPUT B 4 Connect up to 5 stereo audio acceptors for example mono audio recorders 1B to 5B to any of the LEFT and RIGHT B OUTPUT connectors Push IN the LEFT and RIGHT selector buttons 1 10 2x1 5 to select 2x1 5 Connect the power cord to the electricity supply Switch on the VM 1120 The audio input s is are distributed to the audio outputs LEFT RIGHT Press IN LEFT and RIGHT PR LeveL re LeveL A A selector buttons gt 2x1 5 B 2x1 5 B Stereo Audio StereoAudio Stereo Audio Player A Recorder 1
14. ure 1 illustrates the front and rear panels of the VM 1120 Table 1 and Table 2 define the front and rear panels of the VM 1120 respectively Your Balanced Stereo Audio Distributor LEFT RIGHT PR Leve PA LeveL A m 2x15 B m 2x15 B A L 50 g g 1 10 Balanced Stereo Audio Distributor VM 1120 INPUT A INPUT B OUT 1A OUT 1B OUT 2A OUT 2B OUT 3A OUT 3B OUT 4A OUT 4B OUT 5A OUT 5B Figure 1 VM 1120 1 10 Balanced Stereo Audio Distributor KRAMER SIMPLE CREATIVE TECHNOLOGY Your Balanced Stereo Audio Distributor Table 1 Front Panel VM 1120 1 10 Balanced Stereo Audio Distributor Features Feature Function 1 Power LED Illuminates when the unit is powered on 2 tr 1 10 2x1 5 Button Push in to select 2x1 5 release to select 1 10 3 4 Level Band A Trimmers Adjusts the output signal level for OUTPUTS A and B 4 E 1 10 2x1 5 Button Push in to select 2x1 5 release to select 1 10 5 2 Level B and A Trimmers Adjusts the output signal level for OUTPUTS A and B Table 2 Rear Panel VM 1120 1 10 Balanced Stereo Audio Distributor Features Feature Function 6 INPUT A XLR Female Connector Connects to the source A 7 INPUT B XLR Female Connector Connects to the source B 8 OUT A XLR Male Connector Connects to the acceptor A from 1 to 5 9 OUT B XLR Male Connector Connects to the acceptor B from 1 to 5 10 Power Connector with Fuse 230V AC 50
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