K R A ME R E LE CT R O N IC S L T D .
Contents 1 Introduction 1 2 2.1 2.2 2.3 Getting Started Achieving the Best Performance Safety Instructions Recycling Kramer Products 2 2 2 3 3 Overview 4 4 Defining the 905xl Power Amplifier 5 5 Installing in a Rack 6 6 6.1 7 7.1 7.2 7.
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 video, audio, presentation, and broadcasting professionals 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 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 905xl is a high quality power amplifier for stereo audio signals. It accepts either a stereo audio signal on RCA connectors or a balanced stereo audio signal on a terminal block connector. It delivers a speaker output of 110 watts RMS per channel into a 4Ω load on a 10A 4 pin terminal block connector.
4 Defining the 905xl Power Amplifier 5 Figure 1 defines the front and rear panels of the 905xl.
5 Installing in a Rack This section provides instructions for rack mounting the unit.
6 Connecting the 905xl Power Amplifier i Always switch off the power to all devices before connecting them to your 905xl. After connecting your 905xl, connect its power and then switch on the power to each device. Figure 2: Connecting the 905xl Power Amplifier To connect the 905xl Power Amplifier as illustrated in the example in Figure 2: 1. Connect an unbalanced stereo audio source (for example, the unbalanced output of a DVD player) to the Input 1 L and R RCA connectors. 2.
3. Connect the Output terminal block to a pair of speakers. Connect the “L+” and the “L-” terminal block connectors to the left speaker, and the “R+” and the “R-” terminal block connectors to the right speaker. Do not ground the loudspeakers. 4. Connect the power cord to the power socket and connect the cord to the mains electricity (not shown in Figure 2). 5. If required, connect a PC and/or controller to the RS 232 port, (see Section 6.1). 6.
7 Operating the 905xl Power Amplifier You can operate your 905xl using: • The front panel buttons (see Section 7.1) • The Audio Control program (see Section 7.2) • RS-232 serial commands (see Section 10) 7.1 Using the Front Panel Buttons 7.1.1 Adjusting the Volume To adjust the volume of the output signal: 1. Press the up volume button (▲) to increase the volume. 2. Press the down volume button (▼) to decrease the volume. 7.1.2 Muting the Output To mute the output: • Press the Mute button.
Figure 3: Audio Control Window To use the Audio Control Program: 1. Download and install the program on your PC from http://www.kramerelectronics.com. 2. Connect the 905xl to the correct COM port of the PC (see Section 6). 3. Open the Audio Control program. The Audio Control window appears (see Figure 3). 4. Select Input 1 or 2. 5. Make volume, equalization and balance adjustments by dragging the sliders in the window. 6. Turn loudness on and off by checking or unchecking the Loudness checkbox.
7.3 Upgrading the Firmware For instructions on upgrading the firmware see “Upgrading the 905xl Firmware Using the FLIP Software”.
8 Technical Specifications INPUTS: 1 Unbalanced stereo audio input on RCA connectors 1 Balanced stereo audio input on a 5-pin terminal block connector OUTPUT: 1 Speaker stereo audio output on a 4-pin terminal block connector INPUT SENSITIVITY: 760mVpp (unbalanced), 1.2Vpp (balanced) OUTPUT POWER: 55 W per channel into 8 Ω,110W per channel into 4 Ω MAX.
9 Default Communication Parameters RS-232 Baud Rate: 9600 Data Bits: 8 Stop Bits: 1 Parity: None Command Format: ASCII Example (Switch to Input 1): #AUD-IN 1 905xl - Default Communication Parameters 13
10 Protocol 3000 The 905xl can be operated using serial commands from a PC, remote controller or touch screen using the Kramer Protocol 3000. This section describes: 10.1 • Kramer Protocol 3000 syntax (see Section 10.1) • Kramer Protocol 3000 commands (see Section 10.2) Kramer Protocol 3000 Syntax 10.1.1 Host Message Format Start Address (optional) Body Delimiter # Destination_id@ Message CR 10.1.1.
10.1.3 Command Terms Command A sequence of ASCII letters ('A'-'Z', 'a'-'z' and '-'). Command and parameters must be separated by at least one space. Parameters A sequence of alphanumeric ASCII characters ('0'-'9','A'-'Z','a'-'z' and some special characters for specific commands). Parameters are separated by commas. Message string Every command entered as part of a message string begins with a message starting character and ends with a message closing character.
10.1.4 Entering Commands You can directly enter all commands using a terminal with ASCII communications software, such as HyperTerminal, Hercules, etc. Connect the terminal to the serial or Ethernet port on the Kramer device. To enter CR press the Enter key. ( LF is also sent but is ignored by command parser). For commands sent from some non-Kramer controllers like Crestron, some characters require special coding (such as, /X##). Refer to the controller manual. 10.1.
905xl - Protocol 3000 Command Description BASS Set audio bass level BASS? Read audio bass level TREBLE Set audio treble level TREBLE? Read audio treble MIDRANGE Set audio midrange level MIDRANGE? Read audio midrange level LOUDNESS Set audio loudness LOUDNESS? Read audio loudness MUTE Mute audio MUTE? Reads mute state BALANCE Set balance mode BALANCE? Reads balance mode 17
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.
