ASHLY PEMA 8250.70 Mixer, DSP, and 70v amp, 250W/channel

Product Overview

The Ashly PEMA 8250.70 is an 8-channel, 250W-per-channel Protea-Equipped Media Amplifier configured for 70V constant-voltage distributed audio systems, integrating a full 8-in x 8-out matrix mixer, Protea DSP audio processor, and Class-D amplifier in a single 2U rack-mount unit. Designed as a complete one-box solution for commercial AV installation, the PEMA 8250.70 replaces separate mixer, DSP, and amplifier components in distributed audio systems serving boardrooms, houses of worship, and multi-zone commercial facilities. The amplifier accepts both Dante and CobraNet network audio option cards, providing flexibility for network-enabled amplifier installations on either AoIP platform. With gain-sharing automatic microphone mixing, automatic feedback suppression, and a real-time clock with event scheduler, the PEMA 8250.70 supports unattended operation in demanding commercial audio environments.

Product Description

The PEMA 8250.70 delivers 8 channels of 250W each into 70V constant-voltage speaker systems, providing 2000W total output for distributed audio across large commercial spaces. Its 8-in x 8-out matrix mixer allows any input signal to be routed to any output or combination of outputs, giving integrators precise control over multi-zone audio distribution without additional mixing hardware. The full Protea DSP suite includes FIR filter capability, dynamics processing, equalization, crossover, delay, and metering, all managed through standard 10/100 Ethernet and Ashly Protea NE software. Eight built-in microphone preamps with 15V phantom power support direct microphone connections for paging and announcement applications, while the dedicated telephone and PBX input handles phone paging integration. The gain-sharing automatic microphone mixer manages open microphone levels in multi-mic environments, and the automatic feedback suppressor provides protection and reduces setup complexity. Ambient noise detection and automatic level adjustment maintain consistent perceived volume in spaces where background noise varies throughout the day. The real-time clock with event scheduler enables fully automated daily operation, including scheduled preset changes, standby, and power cycling. Built on Class-D amplifier technology with a switching power supply, the PEMA 8250.70 operates at over 80% efficiency, reducing heat output and operating costs in equipment rooms. Both Dante and CobraNet network audio option cards are fully supported for installations requiring AoIP integration.

Key Features

• 8-Channel 70V Output — 250W per channel (2000W RMS total) for constant-voltage distributed speaker systems.
• 8x8 Matrix Mixer — Any input routable to any output or combination of outputs for complete zone control.
• Full Protea DSP Suite — FIR filter capable, EQ, dynamics, crossover, delay, metering, and signal generator.
• 8 Mic Preamps — With 15V phantom power for direct condenser microphone connections.
• Automatic Mic Mixing — Gain-sharing automatic microphone mixer for multi-mic presentation and conference environments.
• Automatic Feedback Suppressor — Built-in feedback suppression reduces setup time and prevents audio feedback events.
• Ambient Noise Compensation — Automatic volume adjustment based on real-time ambient noise measurement.
• Real-Time Clock and Scheduler — Automated daily operation including preset recall, standby, and power scheduling.
• 32-Bit SHARC DSP — 96kHz or 48kHz operation with 24-bit A/D and D/A conversion.
• Network Audio Ready — Supports Dante and CobraNet option cards for AoIP connectivity.
• Telephone/PBX Input — Dedicated input for phone system paging integration.
• Class-D Efficiency — Over 80% energy efficient with switching power supply.

Typical Applications

• Boardrooms and executive conference suites
• House of worship multi-zone sound distribution
• Government and municipal public address systems
• Multi-purpose rooms and event spaces
• Training rooms and all-hands meeting spaces
• Commercial facilities requiring 70V distributed audio
• Auditoriums with distributed speaker systems

Technical Specifications

Frequently Asked Questions

What is the difference between the PEMA 8250.70 and the PEMA 8250.70D?

The PEMA 8250.70 is the base model without a network audio card installed. The PEMA 8250.70D includes a factory-installed OPDante card for immediate Dante network audio connectivity. Both models support Dante and CobraNet cards as options.

Does the PEMA 8250.70 require an external DSP processor?

No. The PEMA 8250.70 integrates a full Protea DSP engine, 8x8 matrix mixer, and 8-channel Class-D amplifier in one unit. For most commercial AV installations, no additional DSP hardware is needed.

Can the PEMA 8250.70 be used for telephone paging?

Yes. A dedicated telephone/PBX input is provided for direct integration with phone systems, allowing paging announcements to interrupt or mix with background audio sources.

How does ambient noise compensation work?

The PEMA 8250.70 measures ambient noise levels and automatically adjusts output gain to maintain a consistent signal-to-noise ratio in the room. This is particularly useful in spaces like cafeterias or lobbies where background noise varies significantly throughout the day.

What Ethernet control software does the PEMA 8250.70 use?

The PEMA 8250.70 is configured and monitored using Ashly Protea NE software over a standard 10/100 Ethernet connection.

How much rack space does the PEMA 8250.70 require?

The unit occupies a standard 2U rack space in a 19" rack.