Ashly NXP1504AD overview The NXP1504 4-Channel Multi-Mode Network Power Amplifier from Ashly is capable of driving 2, 4, and 8 Ohms loads at full power and offers a maximum rated output power of 150W per channel at 25V, 70V, and 100V modes. It comes pre-installed with a four-channel AES3 input card with pass-thru for digital audio and Dante network audio module. The Dante card enables access to digital audio networks at low latencies (83.3 μs) over Gigabit Ethernet. The Protea DSP (Digital Signal Processing) software is also included with this unit for dynamics, gain, equalization, matrix mixer, crossover, delay, and metering. The amplifier features a lightweight 1U design with universal AC input SMPS for improved energy efficiency. It comes with additional energy saving features such as Real-Time Clock (RTC), Event Scheduler, and GPIO control. The multi-mode output capability allows each individual amplifier output channel to be set for Low-Impedance, or Constant Voltage operation using DIP switches. With the Euroblock, and IEC connectivity, this power amplifier safely fulfills the requirements for installed sound applications. Energy Star compliant Consumes less than 1W in the automatic sleep mode DC-voltage level control Network, Serial, and Logic control via Ashly Network remotes (available separately) Protea DSP Input Source Protea DSP Options: Analog, auto (net, AES3, analog) Limiter Brick Wall LimiterThreshold: -20 to 20 dBuRatio: InfiniteAttack: 0.2 to 50 ms/dBRelease: 5 to 1000 ms/dB Compressor Threshold: -20 to +20 dBuRatio: 1.2:1 to infiniteAttack: 0.2 to 50 msRelease 5 to 1000 ms/dBDetector: Peak/AverageAttenuation Bus: 2 availableMetering: In, Out, Attenuation, Graphical Controls Autoleveler ControlsTarget Level: -40 to +20 dBuAction: Gentle, Normal, Aggressive, User-DefinedMaximum Gain: 0 to +22 dBMetering: Input, Gain, AttenuationRatio: 1.2:1 to 10:1Threshold Below Target: -30 to 0 dBGain Increase/Decrease Rate: 5 to 1000 ms/dBHold Time: 0 to 6 sec Ambient Noise Compensation Output onlyMax Gain: -20 to +20 dBMin/Base Gain: -40 to +20 dBGain Change Rate: 0.2 to 20 s/dBLink Group: 16 availableANC Input Channel: 1 to 2 or 1 to 4Noise Threshold -40 to +20 dBuProgram/Ambient Gain Ratio; 0.3:1 to 3:1Metering: Input level, Attenuation, Average noise Ducking High/Low Priority, Trigger, Filibuster, Ducked ProgramTrigger Threshold: -80 to +20 dBuDucking Release: 5 to 1000 ms/dBDucking Depth: 0 to -30 dB, -∞Enable ducking at matrix mixerMetering input Gate Threshold: -80 to +20 dBuRange: Off, 100 to 0 dBAttack: 0.2 to 50 ms/dBRelease: 5 to 1000 ms/dBMetering: Key signal, gate LED, graphicalAdvanced Gate ControlsKey engage enableKey Frequency: 20 Hz to 20 kHzKey Bandwidth: 0.016 to 3.995 octave Gain Gain (with / without VCA): -50 to 12 dB, off, polarity invertDigital VCA Groups: 4 availableRemote RD8C Gain: Enable per channel, 0 dB to -∞WR-5 (neWR-5) Remote Gain: 0 to -50 dB, mute EQ Type For FIR FilterOutput only, 48 kHz only, 2-384 tapsFile Type: .csv, .firFor 31-BandFilter Type: Constant Q or proportionalBandwidth: 0.499 octave to 0.25 octaveFor Parametric 2,4,6, or 10 BandFrequency: 20 to 20 kHzLevel: -30 to 15 dBQ Value: 92.436 to 0.267For Hi / Low Shelf 6 / 12 dB/octaveFrequency: 20 Hz to 20 kHzLevel: -15 to 15 dBFor All PassFrequency: 20 Hz to 20 kHzFor Variable Q HP / LPFrequency: 20 Hz to 20 kHzQ Value: 3.047 to 0.267For Notch / BandpassFrequency: 20 Hz to 20 kHzQ Value: 92.436 to 0.267 Feedback 48 kHz Sampling Rate12 x filtersIn/Out per filterLock (per filter) and global lockFilter Modes: Float, restricted, manualFilter Type: Notch, parametricFilter Frequency Range: 20 Hz to 20 kHzNotch Filter: -∞Parametric Filter: 15 to -30 dBFilter Bandwidth 0.016 to 3.995 OctaveDetector Sensitivity: 5 levelsFloat Time 5 minutes to 24 hours Crossover 2 Way, 3 Way, 4 Way Crossover & High Pass / Low Pass FiltersBessel & Butterworth Filters: 12 / 18 / 24 / 48 dB/octaveLinkwitz-Riley Filter: 12 / 24 / 48 dB / octaveFrequency: Off, 20 Hz to 20 kHz Delay At 48 kHz Sampling Rate (Input Time, Distance & Temperature): Speaker Delay: 0 to 21 msDelay: 0 to 682 msAt 96 kHz Sampling Rate (Input Time, Distance & Temperature): Speaker Delay: 0 to 10.6 msDelay: 0 to 341 ms Audio Metering Range: -60 to 20 dBuIncrements: 1 dBPeak Hold Indicator Signal Generator Pink Noise, White Noise, Sine WaveSignal Level: Off, -50 to 20 dBuSine Wave Frequency: 20 Hz to 12 kHz Mixer Matrix Mixer: Gain (0.5 dB Increments): Off, -50 to 12 dBMute: Per channelAuto-Mixer Enabled: Per channelGlobal Auto-mixer Response: 0.01 to 2 secEnable Ducking at MixerDucking LED: Per channel if enabledMetering: Level, auto-mixer level Processor Input A/D, Output D/A: 24 bitDSP Processors: 32-bit floating pointSample Rates: 48 kHz, 96 kHzPropagation Delay @ 48 kHz: 1.42 msPropagation Delay @ 96 kHz: 0.71 ms
