Description

Ashly NXP4004 Overview

The lightweight nXp400 4-Channel Multi-Mode Network Power Amplifier from Ashly features programmable output on each channel selectable via rear panel DIP switches with swept load impedance monitoring. Audio is processed via the 32-bit SHARC DSP at 48 or 96 kHz sample rates and a built-in signal generator is provided for test tone and noise-masking.

 

The nXp400 amplifier comes pre-installed with Dante network audio module and features aux preamp outputs. Ethernet control is supported via the free Protea NE software (downloadable from Ashly s website) and serial data control is possible via Ashly programmable remotes or third party controllers (available separately). The Protea DSP (Digital Signal Processing) software is included for dynamics, gain, equalization, matrix mixer, crossover, delay, and metering.

 

The amplifier is suitable for live sound and fixed installation sound systems at performance venues, stadiums, arenas, convention centers as well as schools, store fronts, and places of worship.

32-bit SHARC DSP processing at 48 or 96 kHz sample rates

Class-D switching amplifier technology

Selectable 80 Hz Hi-pass filter, limiter, and input gain per channel, via rear panel

Comprehensive software controlled Protea DSP including dynamics, gain, equalization, matrix mixer, crossover, delay, and metering

Precision swept load impedance monitoring of individual amplifier channels for remote diagnosis of speaker problems

Remote iPad control app (available for free) for selecting DSP functions including gain, mute, matrix, A B source select, PEQ filter level, and meters

Ethernet port for software control and monitoring of amplifier functions, with front panel COM activity LED

Serial data port available for Ashly WR-5 and RD-8C programmable remote control (optional RS-232 converter INA-1 available for third party controllers)

Real-time clock with event scheduler

Assign automatic execution of selected functions and tasks

Event scheduler is programmed using the free Protea NE software and stored in the amplifier

Protea NE software will load a speaker manufacturer s .fir or .csv file for precision tuning

Multi-mode operation-selectable outputs on each channel allow you to choose the desired output mode

Preset recall via contact closure, software control, remote control, or event scheduler

Programmable power-on delay

Remote gain and zone control with neWR-5 and FR-8 FR-16 programmable networked remotes

Aux preamp line outputs for driving other amplifiers

Fault condition logic outputs, assignable

Signal generator function for test and noise masking

Neutrik Combo XLR – 1 4 TRS jack plus Euroblock input connectors

Neutrik speakON twist locking loudspeaker connectors

Neutrik powerCON detachable AC mains connector

Set the DIP-switch configuration for low impedance (2, 4, and 8 Ohms), or constant voltage (70V or 100V)

Remote DC level control per channel

Extensive protection circuitry, continuously variable cooling fans

Power-saving Ashly EMS (Energy Management System) which provides an automatic sleep-mode drawing less than 1W

Multiple internal power supplies-provides increased channel separation and reliability

Instant standby mode, 30% reduction in idle power consumption, triggered by contact closure, software control, or event scheduler

Auto-switching 120 240 VAC power supply

cTUVus, CE, FCC, RoHS compliant

Ashly NXP4004 Specs

Amplifier

Number of Channels		4
Voltage Gain		Selectable at 26, 32, or 38 dB, or 1.4 V
Damping Factor		>250 (8 Ohms load <1 kHz)
Filter		Input High Pass Filter: 80 Hz 2nd order
Distortion		SMPTE (Typical): <0.5% THD-N (Typical): <0.5% (8 Ohms, 10 dB below rated power, 20 Hz to 20 kHz)
Channel Separation		-75 dB (dB from full output, 1 kHz)
Signal-to-noise		>105 dB (20 Hz to 20 kHz, un-weighted)
Frequency Response		20 Hz to 20 kHz, ±0.05 dB
Input Impedance		10 kOhms
Balanced Input		Euroblock 3.5 mm, 1 4 TRS and XLR combo jack
Maximum Input Level		+21 dBu
Speaker Output		Neutrik speakON
Network Controllers		Compatible with standard 100 MB Ethernet
AUX Outputs		Balanced Euroblock 3.5 mm
Maximum Output Level		+21 dBu (Aux output)
Standby Mode		Euroblock 3.5 mm, close contact to GND for standby mode
Preset		Euroblock 3.5 mm, close contact to GND for preset 1-4 recall
Data		Data Connection: Euroblock 3.5 mm – GND, 18 V, in, out
Outputs		Fault Condition Logic Outputs: 4 3.5 mm Euroblock
Level Control		Remote DC Level Control: Euroblock 3.5mm – GND, CV, V+ per input
Audio Control Module		Dante network audio interface (pre-installed)
Attenuation		Per Channel: Front panel, software, offset link group, and remote Fully off = Mute
Front Panel LED Indicators		White LED: Power Switch: On, off, flashing (standby mode) Red LED: Protect: On (fault condition or shut down), Off Clip Mute (Per Channel): Clip @ 1 dB below full output mute Blue LED: Sleep Mode: On (when the amplifier is asleep from audio inactivity) Yellow LED: Disable: On (when the power switch & front panel attenuators are disabled) Temperature (Per Channel): On dim at 90% maximum operating temperature, full bright + protect at 100% Green LED: Com: On, for Ethernet data or device ID Signal (Per Channel): -18 dBu, below rated output Bridge (Per Channel): On, off Current (Per Channel): Proportional to output
Protection Circuits		Inrush current limitation, temperature monitoring, output over-power protection, and mains fuses

Protea DSP

Input Source		Protea DSP Options: Analog, auto (net, AES3, analog)
Limiter		Brick Wall Limiter Threshold: -20 to 20 dBu Ratio: Infinite Attack: 0.2 to 50 ms dB Release: 5 to 1000 ms dB
Compressor		Threshold: -20 to +20 dBu Ratio: 1.2:1 to infinite Attack: 0.2 to 50 ms Release 5 to 1000 ms dB Detector: Peak Average Attenuation Bus: 2 available Metering: In, Out, Attenuation, Graphical
Controls		Autoleveler Controls Target Level: -40 to +20 dBu Action: Gentle, Normal, Aggressive, User-Defined Maximum Gain: 0 to +22 dB Metering: Input, Gain, Attenuation Ratio: 1.2:1 to 10:1 Threshold Below Target: -30 to 0 dB Gain Increase Decrease Rate: 5 to 1000 ms dB Hold Time: 0 to 6 sec
Ambient Noise Compensation		Output only Max Gain: -20 to +20 dB Min Base Gain: -40 to +20 dB Gain Change Rate: 0.2 to 20 s dB Link Group: 16 available ANC Input Channel: 1 to 2 or 1 to 4 Noise Threshold -40 to +20 dBu Program Ambient Gain Ratio; 0.3:1 to 3:1 Metering: Input level, Attenuation, Average noise
Ducking		High Low Priority, Trigger, Filibuster, Ducked Program Trigger Threshold: -80 to +20 dBu Ducking Release: 5 to 1000 ms dB Ducking Depth: 0 to -30 dB, -∞ Enable ducking at matrix mixer Metering input
Gate		Threshold: -80 to +20 dBu Range: Off, 100 to 0 dB Attack: 0.2 to 50 ms dB Release: 5 to 1000 ms dB Metering: Key signal, gate LED, graphical Advanced Gate Controls Key engage enable Key Frequency: 20 Hz to 20 kHz Key Bandwidth: 0.016 to 3.995 octave
Gain		Gain (with without VCA): -50 to 12 dB, off, polarity invert Digital VCA Groups: 4 available Remote RD8C Gain: Enable per channel, 0 dB to -∞ WR-5 (neWR-5) Remote Gain: 0 to -50 dB, mute
EQ Type		For FIR Filter Output only, 48 kHz only, 2-384 taps File Type: .csv, .fir For 31-Band Filter Type: Constant Q or proportional Bandwidth: 0.499 octave to 0.25 octave For Parametric 2,4,6, or 10 Band Frequency: 20 to 20 kHz Level: -30 to 15 dB Q Value: 0.016 to 3.995 octave For Hi Low Shelf 6 12 dB octave Frequency: 20 Hz to 20 kHz Level: -15 to 15 dB For All Pass Frequency: 20 Hz to 20 kHz For Variable Q HP LP Frequency: 20 Hz to 20 kHz Q Value: 3.047 to 0.267 For Notch Bandpass Frequency: 20 Hz to 20 kHz Q Value: 92.436 to 0.267
Feedback		48 kHz Sampling Rate 12 x filters In Out per filter Lock (per filter) and global lock Filter Modes: Float, restricted, manual Filter Type: Notch, parametric Filter Frequency Range: 20 Hz to 20 kHz Notch Filter: -∞ Parametric Filter: 15 to -30 dB Filter Bandwidth 0.016 to 3.995 Octave Detector Sensitivity: 5 levels Float Time 5 minutes to 24 hours
Crossover		2 Way, 3 Way, 4 Way Crossover & High Pass Low Pass Filters Bessel & Butterworth Filters: 12 18 24 48 dB octave Linkwitz-Riley Filter: 12 24 48 dB octave Frequency: Off, 20 Hz to 20 kHz
Delay		At 48 kHz Sampling Rate (Input Time, Distance & Temperature): Speaker Delay: 0 to 21 ms Delay: 0 to 682 ms At 96 kHz Sampling Rate (Input Time, Distance & Temperature): Speaker Delay: 0 to 10.6 ms Delay: 0 to 341 ms
Audio Metering		Range: -60 to 20 dBu Increments: 1 dB Peak Hold Indicator
Signal Generator		Pink Noise, White Noise, Sine Wave Signal Level: Off, -50 to 20 dBu Sine Wave Frequency: 20 Hz to 12 kHz
Mixer		Matrix Mixer: Gain (0.5 dB Increments): Off, -50 to 12 dB Mute: Per channel Auto-Mixer Enabled: Per channel Global Auto-mixer Response: 0.01 to 2 sec Enable Ducking at Mixer Ducking LED: Per channel if enabled Metering: Level, auto-mixer level
Processor		Input A D, Output D A: 24 bit DSP Processors: 32-bit floating point Sample Rates: 48 kHz, 96 kHz Propagation Delay @ 48 kHz: 1.42 ms Propagation Delay @ 96 kHz: 0.71 ms

Power Requirements

Nominal		Automatic Sensing SMPS: 120 VAC @ 60 Hz 240 VAC @ 50 Hz
Operating Range		70 to 135 VAC @ 60 Hz 140 to 270 VAC @ 50 Hz
Power		Minimum Power-Up: 85 VAC @ 60 Hz 170 VAC @ 50 Hz
Connector		Power Cable Connector: 20 A powerCON
Maximum Output Power		Per Channel, Low-Z Output, All Channels Driven: 2 4 8 Ohms: 400 W
Low Impedance		Bridge Mode (All Channels Driven): 4 8 Ohms: 800 W 70 V, 100 V Output (All Channels Driven): 70 100 V (Per Channel): 400 W
Power Draw		Sleep Mode: <1 W Standby Mode: 40 W Idle (No Signal): 70 W
Maximum Current Draw		All Channels Driven, Typical Input (1 8 Max Power @ 2 Ohms): 5.0 A for 120 VAC 2.5 A for 240 VAC
Current Draw		For 120 VAC Sleep Mode: 0.1 A Standby Mode: 0.7 A Idle (No Signal): 1.3 A For 240 VAC Sleep Mode: 0.05 A Standby Mode: 0.35 A Idle (No Signal): 0.65 A
Dissipation		Thermal Dissipation: Sleep Mode: <3.4 BTU hr Standby Mode: 136 BTU hr Idle (No signal): 238 BTU hr Typical (1 8 Max Power @ 2 Ohms): 595 BTU hr

General

Cooling		Continuously variable temperature controlled axial fans
Environmental		Non-condensing 32 to 113°F (0 to 45°C)
Dimensions		19.00 x 3.50 x 16.84 (483 x 89 x 428 mm)
Weight		25.9 lb (11.7 kg)

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