Ashly Power Amplifier

Transcription

1 Ashly Power Amplifier

2 Contents Contents 1 1 Introduction Dimensions Getting Started Proper Cooling Setup Procedure Powering Up the Amplifier General Information Front Indication Lights Rear Panel Connections Front Panel Connections Technical Specifications Wiring Minimum Guaranteed Power Memory Devices Reliability References Ashly Amplifier Part Numbers

3 Note: This document is for use with Ashly Amplifiers and ASTi equipment only. Please refer to Ashly s website 1 for more information. 1 Introduction The Ashly Power Amplifier provides power to drive passive audio loudspeakers (4 or 8). Each amplifier is a network device that integrates with ASTi s ACENet. ACENet provides a low latency, network-based audio and I/O distribution architecture for ASTi s Telestra and Voisus platforms. The amplifier also offers a full range of indicators for accurate diagnostics. This document provides an overview of the ne8250c 8-channel amplifier. For a more comprehensive explanation of the Ashly products, please read the documents mentioned in the Reference section of this document (Sec.5). 1.1 Dimensions ne8250c 8-Channel Ashly Amp Ashly Amplifier Depth Width Height ne8250c (black chassis) 15.5 in. 19 in. 3.5 in. ne8250c (black chassis) 39.4 cm 48.3 cm 8.9 cm ne8250c (silver chassis) in. 19 in 3.5 in. ne8250c (silver chassis) cm cm 8.89cm 1 2

4 2 Getting Started Warning: Before amplifier installation, ensure that your amplifier is not connected to power and all control levels are turned down (counterclockwise). 2.1 Proper Cooling Do not block any of the amplifier ventilation vents. When using an equipment rack, mount the units directly on top of each other. Do not block rear, front, or side air vents. The side walls of the rack should be a minimum of one inch (2.5cm) away from the amplifier sides, and the back of the rack should be open. 2.2 Setup Procedure 1. Use the Primary or Secondary port and a Cat 5 cable to connect to the ACENet switch. Do not connect both. 2. Connect the 10/100 Ethernet port to the ACENet switch. 3. Connect the AC power cord. The Analog Input Connectors are not used in the ASTi system setup. Warning: Do not connect or disconnect speakers or ACENet while the amplifier is powered on. 3

5 2.3 Powering Up the Amplifier Important: Complete section 2.1. Setup Procedure before proceeding with this section. When turning on the amplifier for the first time, follow the steps below. 1. Turn down the levels on the front panel. 2. Turn on the Power switch. The power indicator should illuminate after a short boot up sequence. 3. Once the amplifier is connected to the network and powered up, use the RMS ACENet page to complete the amplifier configuration. 4

6 Remember: Disconnect the power cord before making any change to the installation or wiring. 3 General Information 3.1 Front Indication Lights 3.2 Rear Panel Connections AC Power Cord Connector- Standard IEC type 320 inlet, 120V models are 15-amp, models are 10-amp. Voltage is indicated above IEC inlet. Output Connector- for every two channels - On Shore Technologies inc. OSTTJ Primary and Secondary Ethernet Connection- connects to ASTi s ACENet which provides low latency, network-based audio architecture for ASTi s communications and sound modeling equipment and software. For more information on this architecture and scalable distribution network, please see the Telestra ACENet User Guide (DOC 01-Tel4-AN-UG 1). Mode Switch- for every two channels, this switch selects the amplifiers mode- bridge or normal. In most cases, this should be set to normal. Warning: Ensure that the amplifier is powered off before changing the mode setting. 5

7 Input Connectors- removable euroblock connectors for balanced analog audio signal input. The Input Connectors are not used in the ASTi system setup. 3.3 Front Panel Connections Channel Level Controls- act as the overall master gain control for each channel. The exact setting required for any specific installation will depend on a number of factors including speaker placement, speaker sensitivity, size of the space being driven, and of course the required sound level required from the system. Conventional audio set-up procedures apply, such that the signal source should be set to the maximum level achievable while avoiding overload (clipping) for the loudest signal levels required from the system (typically the crash sound for a flight simulator), this affording the maximum signal-to-noise performance, and then setting the amplifier Channel Level Controls to achieve the required loudness for this particular sound. In normal use, the Telestra configuration service will disable these controls. 4 Technical Specifications 4.1 Wiring Select the appropriate size of the wire based on the distance from the amplifier to the speaker. Distance Wire Size up to 25 ft. (7.6 m) 16 AWG ft. ( m) 14 AWG ft. ( m) 12 AWG Over 60 ft. (18.3 m) 10 AWG Warning: Never connect the speaker return to the chassis of the amplifier or damage to the amplifier may result. Never use shielded cable for output wiring. 4.2 Minimum Guaranteed Power - 150W per 8 Ohms - 250W per 4 Ohms 4.3 Memory Devices The Ashly Amp memory devices are summarized in the table below. Volatile MCU Internal Flash MCU Internal SRAM 512kb 64kb 6

8 Non-Volatile SRAM 32kb Flash 2 Mb 4.4 Reliability Typical System Mean Time Between Failure (MTBF) ne8250 low-z 478,000 hours 5 References For more information and Ashly-specific documentation, visit the Ashly Technical Support 2 page. Training videos are also available on Ashly s Youtube 3 page. 5.1 Ashly Amplifier Part Numbers This document refers to a specific Ashly amplifier. If purchasing an Ashly amplifier from another source, follow the part numbers below to ensure compatibility. Similar part numbers that may appear to be the same will not work consistently with ASTi s ACENet architecture. Ashly Amplifier ne8250 with CNM 2 expansion card Part Number A-PAMP-ASH 8 Please contact ASTi for information regarding any international voltage requirements