KRAMER ELECTRONICS, Ltd.
Table Of Contents Section Name Page 1 1.1 1.2 2 3 4 4.1 5 5.1 5.2 5.3 5.4 6 6.1 7 8 8.1 8.2 8.3 8.4 8.4.1 8.5 8.6 8.7 9 10 10.1 10.
ADDENDUM: VM-80A Default Mode Change This addendum describes how to change the default operation mode. By factory default, the VM-80A starts in 1:8 mode. To change the default mode to 2x1:4: 1. Disconnect the device from its power source. 2. Open the top cover of the device. 3. Move the jumper on the main board from JP1 to JP2. This operation must be performed by a qualified technician.
INTRODUCTION Congratulations on your purchase of this Kramer Electronics amplifier. Since 1981 Kramer has been dedicated to the development and manufacture of high quality video/audio equipment. The Kramer line has become an integral part of many of the best production and presentation facilities around the world. In recent years, Kramer has redesigned and upgraded most of the line, making the best even better.
SPECIFICATIONS VM-1110 VM-1610 VM-5AD VM-80A Configuration 1:10 or 2x1:5 1:10 or 2x1:5 1:5 Input Type 2 balanced audio 2 stereo balanced audio Input Connections Female XLR connectors Terminal block connectors 1 audio-balanced 2 stereo audio balanced mono, or unbalanced stereo. MIC state: 1 balanced mono Mic or unbalanced stereo Mic - 5mV/10kohm.
HOW DO I GET STARTED? The fastest way to get started is to take your time and do everything right the first time. Taking 15 minutes to read the manual may save you a few hours later. You don’t even have to read the whole manual, focus on the relevant sections. UNPACKING AND CONTENTS The items contained in your Kramer VM amplifier package are listed below. Please save the original box and packaging materials for possible future transportation and shipment of the amplifier.
VM SERIES AMPLIFIERS This section describes all the controls and connections of your amplifier. Understanding all of the controls and connections helps you realize its full power. 5.1 Getting to Know Your VM-1110 Amplifier The KRAMER VM-1110 is a full spec, state-of-the-art, 1:10 balanced audio distribution amplifier designed for studio and other demanding applications. The VM-1110 splits the input source into ten identical outputs with no discernible signal degradation.
5.2 Getting to Know Your VM-1610 Amplifier The KRAMER VM-1610 is a full spec, state-of-the-art, 1:10 balanced stereo audio distribution amplifier designed for studio and other demanding applications. The VM-1610 has two inputs and can be programmed by the user to function as a 1:10 or as a 2 x 1:5 DA. State-of-the-art Bi-Fet amplifying circuitry and a high power discrete buffering system make the VM-1610 an excellent performer.
5.3 Getting to Know Your VM-5AD Amplifier The KRAMER VM-5AD is a full spec, state-of-the-art, 1:5 balanced audio distribution amplifier designed for studio and other demanding applications. The VM-5AD splits a single input source, either mono balanced or stereo unbalanced into five identical outputs without any discernible signal degradation.
5.4 Getting To Know Your VM-80A Amplifier The KRAMER VM-80A is a Broadcast quality, state-of-the-art, balanced stereo audio distribution amplifier designed for demanding applications, such as broadcast and production studios. The VM80A has two balanced stereo audio inputs, each splitting the input source into four identical outputs. The VM-80A can function as a 1:8 DA or as two 1:4 DAs. It has trimmers on the front panel to fine tune levels of each channel individually.
INSTALLATION 6.1 Rack Mounting The VM-1110 and VM-1610 amplifiers may be rack mounted in a standard 19” EIA rack assembly, and include rack “ears” at the ends of the front panel. Each of these devices uses one unit (1U) of rack height, 1.75", and does not require any specific spacing above or below the unit for ventilation. To mount these amplifiers, simply place the unit against the rails of your rack, and insert standard screws through each of the four corner holes in the rack ears.
8.4.1 Using A Microphone A microphone is a device which converts sound waves to electrical impulses. High quality microphones usually generate a very low signal level. Low noise, high fidelity pre-amplification is required to boost the output of a microphone before the signal reaches the main audio amplifier where it is processed as a regular audio signal. Pre-amplifying low level microphone signals is achieved by precise matching of microphone impedance and use of low noise electronic amplifying devices.
Some useful tips: Use two mono Das as one stereo balanced DA. Use a dual channel DA (VM-1110 for example) for maximal studio flexibility. Do not use excessively long cables if possible, as signal quality may degrade rapidly. Use best cables and connectors (XLRs). You may feed a balanced DA with an unbalanced signal via a Transcoder (FC-4208 for example).
TROUBLESHOOTING NOTES 1. Please note that if the output signal is disturbed or interrupted by very strong external electromagnetic interference, it should return and stabilize when such interference ends. If not, turn the power switch off and on again to reset the machine. 2. If the recommended actions still do not result in satisfactory operation, please consult your KRAMER Dealer. 10.1 Power And Indicators Problem Remedy No Power 1. 10.
Problem Remedy Low frequency hum in the output signal 60Hz hum (ground loop) is caused by a difference in the ground potential of any two or more devices connected to your signal path. This difference is compensated by passing that voltage difference through any available interconnection, including your audio cables.
LIMITED WARRANTY Kramer Electronics (hereafter Kramer) warrants this product free from defects in material and workmanship under the following terms. HOW LONG IS THE WARRANTY Labor and parts are warranted for three year from the date of the first customer purchase. WHO IS 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.
LIMITATION 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 Kramer’s liability for any defective products is limited to the repair or replacement of the product at our option. Kramer shall not be liable for: 1.
For the latest information on our products and a list of Kramer distributors, visit our Web site: www.kramerelectronics.com. Updates to this user manual may be found at http://www.kramerelectronics.com/manuals.html. We welcome your questions, comments and feedback. Kramer Electronics, Ltd. Web site: www.kramerelectronics.com E-mail: info@kramerel.
