ASHLY NXP1504 Network Power Amplifier 4 x 150 Watts @ 2 Ohms with Protea DSP

Product Overview

The Ashly NXP1504 is a four-channel networkable power amplifier with integrated Protea DSP, delivering 150 watts per channel across all load configurations — 25V, 70V, 100V constant-voltage, and 2, 4, or 8 ohm low-impedance. As a four-channel NXP series amplifier without a Dante option card, the NXP1504 accepts analog audio inputs and provides full Protea DSP processing for all four channels simultaneously, with Ethernet-based remote control via Protea NE software. The consistent 150W/ch output across all impedances and voltage taps, combined with 25V constant-voltage support and onboard DSP, makes the NXP1504 a practical choice for multi-zone distributed audio systems in corporate boardrooms, educational facilities, retail environments, and conference centers where four independent output zones are required with onboard processing and network control but without Dante transport.

Product Description

The Ashly NXP1504 networkable amplifier with DSP delivers four-channel multi-mode amplification at 150W/ch with integrated Protea DSP and Ethernet-based network control in a rack-mount chassis. Each of the four channels is independently configurable for 25V, 70V, or 100V constant-voltage or 2, 4, or 8 ohm low-impedance operation via rear panel DIP switches. Support for 25V constant-voltage operation makes the NXP1504 compatible with smaller commercial speaker systems, including installations in education, retail, and corporate environments that use 25V wiring. Protea DSP delivers comprehensive per-channel signal processing — dynamics, PEQ, crossover, matrix mixing, delay, metering, and FIR filter support — all configurable remotely via Ashly's Protea NE software over Ethernet. The built-in real-time clock with event scheduler enables automated preset recalls, standby transitions, and power-on delays on programmable daily schedules, reducing manual intervention for facilities with regular operating hours. The Ashly Remote iPad app provides wireless control of DSP parameters including gain, mute, matrix, and PEQ. Aux preamp line outputs on each channel allow the NXP1504 to drive additional downstream amplifiers for system expansion. Four independent channels with individual level controls and status indicators enable per-zone adjustment and monitoring from the front panel. The Ashly EMS provides automatic sleep mode drawing less than 1 watt during idle periods. The NXP1504 is manufactured in the United States, TAA compliant, and carries a 5-year limited warranty.

Key Features

• 4-Channel Multi-Mode Output — Each of the four channels independently configurable for constant-voltage (25V/70V/100V) or low-impedance (2/4/8 ohm) via rear DIP switches.
• 25V Constant-Voltage Support — All four channels support 25V, 70V, and 100V operation, covering compact commercial installations with 25V speaker systems.
• 150 W/Ch Across All Loads — Consistent 150W/ch at 25V, 70V, 100V, 8 ohm, 4 ohm, and 2 ohm for straightforward four-zone capacity planning.
• Integrated Protea DSP — 32-bit SHARC processing; dynamics, PEQ, matrix mixing, crossover, delay, metering, and FIR filter support per channel.
• Protea NE Software Control — Full Ethernet-based remote control, monitoring, and preset management without Dante.
• Ashly Remote iPad App — Wireless DSP control including gain, mute, matrix, A/B source select, PEQ, and metering.
• Real-Time Clock with Event Scheduler — Automated preset recalls, standby, and power-on transitions on daily schedules.
• FIR Filter Ready — Accepts .fir and .csv speaker tuning files for precision alignment.
• Ashly EMS Energy Management — Automatic sleep mode draws less than 1 watt; defeatable.
• 5-Year Limited Warranty — Manufactured in the United States; TAA compliant, RoHS and cTUVus certified.

Typical Applications

• Multi-zone corporate boardroom and conference room distributed audio
• Educational facility and classroom four-zone audio with 25V speakers
• Retail space and commercial building multi-zone background audio
• Government facility fixed installation with 25V/70V/100V compatibility
• House of worship multi-zone overflow and distributed speaker systems
• Convention center and meeting room multi-zone with onboard DSP

Technical Specifications

Frequently Asked Questions

Does the NXP1504 include Dante?

No. The NXP1504 does not include a Dante option card. It accepts analog audio inputs and provides Ethernet control and monitoring via Protea NE software. For Dante audio transport with four channels and DSP, consider the NXP1504D.

Does the NXP1504 support 25V constant-voltage speakers?

Yes. All four channels support 25V, 70V, and 100V constant-voltage operation, covering compact commercial installations with 25V speaker systems.

Can the NXP1504 be controlled remotely?

Yes. The NXP1504 supports Ethernet control via Protea NE software and wireless control via the Ashly Remote iPad app. It also supports serial control via WR-5 and RD-8C remotes.

What processing does the NXP1504 DSP include?

The NXP1504 includes full Protea DSP on each channel: dynamics, parametric EQ, crossover, matrix mixing, delay, metering, FIR filter support, and a real-time clock event scheduler. Processing runs on a 32-bit SHARC processor.

What is the NXP1504 warranty?

The NXP1504 carries a 5-year limited warranty and is manufactured in the United States. It is TAA compliant and certified RoHS and cTUVus.