K R A ME R E LE CT R O N IC S L TD .
Contents 1 Introduction 1 2 2.1 2.2 2.3 3 Getting Started Achieving the Best Performance Safety Instructions Recycling Kramer Products Overview 2 2 2 3 4 4 Defining the 920 Power Amplifier 5 5 5.1 5.2 5.
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.
2 Getting Started We recommend that you: Unpack the equipment carefully and save the original box and packaging materials for possible future shipment i 2.1 Review the contents of this user manual Go to http://www.kramerelectronics.com/support/product_downloads.asp to check for up-to-date user manuals, application programs, and to check if firmware upgrades are available (where appropriate).
2.3 Recycling Kramer Products The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC aims to reduce the amount of WEEE sent for disposal to landfill or incineration by requiring it to be collected and recycled. To comply with the WEEE Directive, Kramer Electronics has made arrangements with the European Advanced Recycling Network (EARN) and will cover any costs of treatment, recycling and recovery of waste Kramer Electronics branded equipment on arrival at the EARN facility.
3 Overview The Kramer 920 is a high−performance audio power amplifier for balanced, unbalanced and microphone signals, that can output 200W of audio into 70V or 100V speaker systems.
920 – Defining the 920 Power Amplifier 4 Defining the 920 Power Amplifier Figure 1 defines the 920 Power Amplifier. Figure 1: 920 Power Amplifier Front Panel # Feature Function 1 STATUS LED Lights green when the device is active. Lights orange when the device is in standby mode. Lights red when the device is in protection mode SIGNAL LED Lights green when the input signal is present.
6 Figure 2: 920 Power Amplifier Rear Panel # Feature 1 Function 5-pin Terminal Block Connect to the balanced stereo source BAL/ RCA Selector Selects the balanced or unbalanced (RCA) input selector RCA Connectors Connect to the unbalanced stereo source 4 LEVEL Trimmer Adjusts the line-level input 5 3-pin Terminal Block Connect to the microphone 6 LEVEL Trimmer Adjusts the microphone input level PHANTOM (48V) Switch Phantom power on/off switch 8 MIC Switch Microphone input on/off switch
5 Connecting the 920 This chapter comprises the following sections: 5.1 Connecting the 920 (see Section 5.1) Connecting speakers (see Section 5.2) Connecting a microphone (see Section 5.3) Connecting the 920 i Always switch off the power to each device before connecting it to your 920. After connecting your 920, connect its power and then switch on the power to each device.
To connect the 920 as illustrated in the example in Figure 3: 1. Connect a balanced, stereo audio source, (for example, a multimedia player) to the 5-pin Line Input terminal block and an unbalanced stereo audio source to the Line Input RCA connectors. 2. Select the BAL-RCA switch accordingly. 3. Connect a microphone to the 3-pin Mic Input terminal block. 4. Connect the speaker(s) to the Speaker Out 3-pin terminal block, (see Section 5.2). 5.
Figure 5: Connecting One or Multiple Speakers to the 920 (70V) 5.3 Connecting a Microphone The 920 can provide phantom power (48V) to a microphone.
6 Technical Specifications INPUT: 1 Balanced stereo +4dBu/10kΩ on a 5-pin removable terminal block 1 Unbalanced stereo on 2 RCA connectors OUTPUT: 1 speaker 70/100V output on a 3-pin removable large terminal block INPUT SENSITIVITY: 0.3V to 1.23V –10dBu to 4 dBu OUTPUT POWER: 200W AMPLIFIER TYPE: Class D MAXIMUM VOLTAGE GAIN: +26dB BANDWIDTH (-3dB): 20Hz to 20kHz S/N RATIO: –75dB @14dBu amplification (0.
For the latest information on our products and a list of 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.
2 920 - Technical Specifications
