Ashly Protea NE8250 Bedieningshandleiding - Pagina 5
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Operating Manual - NE Multi Channel Power Amplifier
The basic NE multichannel amplifiers come in either four channel or eight channel configurations with Euroblock input
and output connectors. Standard features on all models include balanced inputs, bridge mono mode, and Ethernet control using
ne
Protea
software. Remote control functions include standby, contact closure preset recall, and DC level control. Programmable
remotes for NE amplifiers with DSP include Ashly's WR-5 or neWR-5 button controllers, RD-8C or FR-8/16 fader controllers,
or third party RS-232 control.
Factory Installed Options
Factory installed hardware options for NE multichannel power amplifiers include the following:
1) Internal DSP - With Protea DSP installed, each input channel benefits from pluggable DSP blocks for 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. Output channels have the same
DSP functions as inputs, with the addition of automated crossover setup as well as FIR filter capability. 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 store and retrieve parameters of an entire amplifier's control surface and DSP settings. In addition, Sub Presets
allow for a collection of individual DSP 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, by a programmable remote control, or by on-board contact closure
switch connections on the back panel.
2) MIC Inputs - In amplifiers with DSP, four analog MIC inputs can be installed for full gain, mixing, and processing of
mic input signals. The same back panel slot is used for Mic input or AES3 input options, but only one can be installed.
3) AES3 Input - With a four or eight channel AES3 option installed, audio sources with AES3 outputs can plug directly into
the amplifier. Using AES3, 2 channels of digital audio are sent over a single mic cable, maintaining a completely digital signal path
until just before the power amplification stage. 48kHz & 96kHz data rates are supported. AES3 can be installed with or without DSP.
4) Network Audio - Dante
Dante
®
, created by Audinate, is an Ethernet based digital AV network technology that uses existing 100MB or 1GB
network infrastructure for delivery of high performance, high channel count audio signals. Ashly products with network audio
capability can be integrated into a Dante™ digital audio system by purchasing our OPTDante module as a factory installed
option, and controlled using Protea
CobraNet
®
is a technology developed and supported by Cirrus Logic (www.cirrus.com). 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
cobranet.info.
Protection
This amplifier utilizes the following protection schemes:
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 also a protection scheme indicated on the amplifier front panel and software control surface which
reduces audio output level until the overcurrent condition is no longer present.
®
or CobraNet
®
network audio modules can be factory installed, with or without DSP.
software.
ne
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