Ashly nXp400 4-Channel Multi-Mode Network Power Amplifier with Protea DSP Software Suite & Dante Digital Interface

nXp4004 Multi-Mode Amplifier plus Dante Option Card


Ashly nXp400 4-Channel Multi-Mode Network Power Amplifier with Protea DSP Software Suite & Dante Digital Interface

Weight 25.9 lbs
Dimensions 19 × 3.5 × 16.84 in
Part No

SKU nXp4004d Categories ,

Product Description

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
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)