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Additional hardware options for the NE multichannel power amplifiers include the following: 1) Internal DSP Processing -With this factory installed option, and using Proteane (network enabled) software, each amplifier input channel can be configured with pluggable DSP blocks to have its own dynamics control, gain functions, graphic and/or parametric EQ, Hi-pass/Lo-pass filters, time delay, metering, and test signal generator. A mixer section with assignable routing allows any input to drive any or all amplifier outputs. Outputs have the same DSP functions as inputs, with the addition of a fast, automated crossover setup. Both inputs and outputs can copy/paste their settings to other channels, or can link with one or more other channels to track their settings. Presets can be used to store and retrieve global parameters of an entire amplifier’s control surface and DSP section from a file. In addition, Sub Presets allow for a collection of individual DSP function parameters within and across multiple channels of an amplifier to be stored and recalled as a set, affecting only those parameters and channels which have been tagged. Up to 35 presets/subpresets can be stored within the amplifier, and can be recalled in real time from a computer, WR-5 remote control, or contact closure switches (up to four). 2) AES/EBU Input -Using an optional four or eight channel input card, NE multichannel amplifiers can accept AES/ EBU digital inputs. This protocol allows 2 channels of digital audio to be transmitted over a single cable, thus maintaining a completely digital signal path until just before the power amplification stage. 48kHz & 96kHz data rates are supported. 3) MIC Inputs -In conjunction with the factory installed DSP option, four analog MIC inputs can be installed (instead of AES/EBU) for full gain, mixing, and dsp processing capabilities using Proteane software. 4) Network Digital Audio (Cobranet) -This option allows the NE multichannel amplifier to be part of a net- worked audio distribution system. CobraNet is a technology developed and supported by Cirrus Logic (It is a combination of software, hardware and network protocol which allows distribution of multiple channels of real- time, high quality digital audio over a standard Ethernet Network. For detailed information about CobraNet or its implementation or installation please visit Protection Ashly NE multichannel amplifiers come standard with several protection circuits: Over Current Protection -Is controlled in the output stage. Thermal Protection - When the internal temperature is below 40°C the fan runs at its slowest speed. Above 40°C the speed is increased until it reaches its maximum value. If the temperature exceeds 100°C, the input on that channel is reduced. If the temperature exceeds 120°C, the power supply is switched off. Mains Protections – protection within the power supply includes: Inrush Current Limitation during power up, Mains Over Voltage Detection, and internal Mains Fuse Protection. To protect the Mains fuse against AC overcurrent due to excessive audio output current, there is a protection scheme controlled in Proteane software and indicated on the amplifier front panel which reduces audio output level until the overcurrent condition is no longer present. Operating Manual - NE Multi Channel Power Amplifiers 6 Physical Description Each model in the NE Multichannel series is 2RU, and weighs 22 pounds (10kg) or less. The model number is indicated in the lower left corner of the front panel. Amplifier Front Panel 1. Mounting Holes – For rack mounting. 2. Power Switch – Switches the unit on or off. Note: The power switch can be disabled from Proteane Software 3. Status LEDs – Indicate status of: Power, Standby, Protect, Power Switch Disable, and Comm activity 4. Air Inflow Vents – Cool air enters here 5. Channel Controls – Channel control area 6. Signal LEDs – The lowest LED will begin to light when the output voltage reaches -18dBu below rated output. The Clip LEDs will begin to flash when output voltage is 1/2 volt below the output power supply voltage. 7. Bridge – This LED indicates that the channel pair is selected to BRIDGE mode from the back panel switch, and that only the odd input channel level control is active 8. Temp and Current LEDs – The Temp LED indicates that the amplifier has reached an excessively high operating temperature. The Current LED confirms that the amplifier output is delivered to a speaker load. 9. Channel Attenuators – These control the input signal level to the amp, and can be disabled from software. 10. Factory Reset – To reset all internal configurations (including passwords) back to their original factory settings, press and hold this recessed front panel tact switch during power up until all channel LEDs are lit. Upon reset completion, the LEDs will turn off and the amp will be in normal operating mode. Amplifier Rear Panel Model shown: ne8250 with Cobranet and AES/EBU...

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