ASHLY NE4250.70 NW Power Amplifier 4x250W @70V Constant Voltage w/selectable high-pass F

Product Overview

The Ashly NE4250.70 is a network-enabled 4-channel power amplifier delivering 250W per channel into 70V constant-voltage distributed speaker systems, with standard 10/100 Ethernet control, selectable high-pass filters, and Class-D efficiency in a 2U rack-mount chassis. The base NE Series 70V network amplifier without factory-installed DSP or digital audio option cards, the NE4250.70 provides a straightforward and cost-effective starting point for commercial 70V distributed audio installations in conference rooms, training rooms, and smaller commercial spaces, with the option to add Protea DSP, Dante, CobraNet, or AES3 cards as required. With 1000W total output, calibrated stepped attenuators, DC voltage remote gain control, and four-stage channel metering, the NE4250.70 covers the core requirements of 4-zone constant-voltage commercial audio.

Product Description

The NE4250.70 is Ashly's standard 4-channel 70V network amplifier, offering the NE Series platform's core feature set in a smaller 4-channel package. All 4 channels deliver 250W into 70V loads, providing 1000W total output for distributed speaker systems with up to four zones. Selectable high-pass filter settings (confirmed per the NE4250.70's specifications) protect 70V loudspeakers from low-frequency content. Stepped, calibrated front-panel attenuators on each input channel provide consistent level settings, and DC voltage remote gain control supports volume management from wall remotes and building automation systems without computer access. Standard 10/100 Ethernet connects to Ashly Protea NE software for remote control and monitoring, and contact closure preset recall and remote power standby enable integration with room control systems. Per-channel four-stage level meters, bridge mono indicator, and temperature and current indicators provide system status for field monitoring. The unit supports 120V and 230V AC operation and accepts Protea DSP, AES3, Dante, and CobraNet option cards for installation-specific customization. Built in the United States, certified cTUVus and RoHS, and backed by a 5-year warranty, the NE4250.70 is a reliable commercial zone amplifier for 70V distributed audio systems.

Key Features

• 4-Channel 70V Output — 250W per channel (1000W RMS total) for constant-voltage distributed speaker systems.
• Selectable High-Pass Filter — Selectable HPF frequencies to protect 70V loudspeakers from low-frequency content.
• Standard Ethernet Control — 10/100 Ethernet for Protea NE software remote control and monitoring.
• DC Voltage Remote Gain Control — Per-channel volume control from wall remotes and building automation.
• Stepped Calibrated Attenuators — Repeatable level settings for consistent field commissioning.
• Expandable Platform — Accepts Protea DSP, AES3, Dante, and CobraNet option cards.
• Remote Power Standby — Network or contact-closure standby for energy management.
• Universal AC Input — 120V and 230V AC for domestic and international deployments.
• Class-D Efficiency — High-efficiency switching amplifier topology.

Typical Applications

• Conference rooms and meeting spaces with 4-zone 70V audio
• Training rooms and smaller commercial facilities
• Retail environments with background music and paging
• Houses of worship with 4-zone distributed audio
• Government meeting rooms with 70V speaker systems

Technical Specifications

Frequently Asked Questions

Does the NE4250.70 include DSP or a Dante card?

No. The NE4250.70 is the base network amplifier. Protea DSP, Dante, CobraNet, and AES3 option cards can be added. For a version with Dante and Protea DSP pre-installed, the NE4250.70PED is the appropriate model.

What is the difference between the NE4250.70 and the NE8250.70?

The NE4250.70 provides 4 amplifier channels (1000W total), while the NE8250.70 provides 8 channels (2000W total). Both are base 70V network amplifiers with the same NE Series platform features.

Can the NE4250.70 be bridged for more power?

Yes. Channel pairs can be bridged mono for higher output power into a single load. Front panel and software indicators confirm bridge mono operation.

How is the NE4250.70 controlled?

Remote control and monitoring are provided through Ashly Protea NE software over standard 10/100 Ethernet. DC voltage inputs enable per-channel gain control from wall remotes.

What rack space does the NE4250.70 require?

The unit occupies 2U of rack space (3.5" tall) and is 15.5" deep, fitting standard 19" equipment racks at 18 lbs.