Protection

Operating Manual - NE Multi Channel Power Amplifiers

ne4250.70 - Four Channels, 70 volt output, 250W per channel

ne8250.70 - Eight Channels, 70 volt output, 250W per channel

ne4250.10 - Four Channels, 100 volt output, 250W per channel

ne8250.10 - Eight Channels, 100 volt output, 250W per channel

The basic NE multichannel amplifiers come in either four channel or eight channel configurations with Euroblock input connectors. Output connectors are also Euroblock. Standard features on all models include balanced analog inputs, bridge mono mode per channel pair, full ethernet control using Proteane software, remote standby for power up, contact closure preset recall, remote control through micropocessor based devices such as the Ashly WR-5, RD-8C, or other custom control, and DC remote level control using an Ashly WR-1.

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

acomputer, 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 (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 www.cobranet.info.

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.

ne 8250.70, ne 8250.10, ne 8250.25, ne 8250, ne 4250.10p specifications

The Ashly NE series, particularly models NE 8250.25, NE 4250.10P, NE 8250.10, NE 8250.70, and NE 8250, are renowned for their exceptional performance in audio processing and amplification. These models are widely used in professional audio applications, making them a favorite choice among sound engineers and venue owners.

The NE 8250.25 model is notable for its powerful performance, featuring a 25-channel configuration that allows for diverse setups. It provides high-quality audio processing and amplification, delivering clarity and precision in sound reproduction. The integrated DSP technology offers advanced signal processing features such as equalization, crossover control, and delay settings, enabling users to fine-tune their audio output to meet specific requirements.

The NE 4250.10P model combines versatility and power, featuring a robust 10-channel configuration. This model is particularly suited for portable applications, providing easy integration with other audio equipment. Its lightweight design does not compromise on power, offering impressive output and quality in a compact unit. Built-in network control capabilities allow for remote management, ensuring that users can make adjustments on-the-fly during performances.

The NE 8250.10 model is designed for users who require a more extensive sound system. With ten high-performance output channels, this model supports large-scale installations, making it ideal for concert venues and auditoriums. Advanced thermal management ensures consistent performance, even during prolonged use, while its durable construction allows it to withstand the rigors of live events.

The NE 8250.70 model stands out with its focus on delivering high-efficiency power amplification. It features a 70V output option, making it suitable for large venue applications where long cable runs are necessary. This model ensures minimal signal loss, delivering pristine audio quality across extensive systems.

Lastly, the NE 8250 serves as a versatile hub for audio management, integrating all the features of its counterparts to provide comprehensive control over an audio system. Users benefit from enhanced connectivity options, including digital and analog inputs, facilitating easy integration into existing setups.

In summary, the Ashly NE series encapsulates innovative technologies and features that cater to the demands of modern audio applications. These models exemplify a commitment to sound quality, versatility, and ease of use, making them indispensable tools for audio professionals. Whether for live sound reinforcement, installed audio systems, or portable setups, the Ashly NE series remains a benchmark in the professional audio industry.