MA500.4

The Ashly MA500.4 is a four-channel, high-efficiency Class-D power amplifier designed for professional installations and multi-zone audio systems. Delivering 500 watts per channel, it combines intelligent power sharing, selectable low-impedance and constant-voltage operation, and integrated protection features. Its compact 2U rackmount design makes it suitable for commercial audio, theatres, educational facilities, and houses of worship.

From The Manufacturer:

The Ashly MA500.4 is part of the MA Series of ultra-high-efficiency power amplifiers. It incorporates Ashly's proprietary D-MAX™ amplifier technology and intelligent power sharing, which dynamically allocates available power across groups of four channels according to signal and loudspeaker load requirements.

Each channel can be configured for low-impedance operation at 2, 4, or 8 ohms, or constant-voltage operation at 25 V, 70 V, or 100 V. Additional features include removable Euroblock input and output connections, remote volume-control ports, switchable high-pass filters, clip limiters, and front-panel status indicators.

Key Features:

1. Four-channel professional power amplifier.

2. High-efficiency D-MAX™ Class-D amplifier technology.

3. 500 W per channel with power sharing disabled.

4. Intelligent power sharing across groups of four channels.

5. Power sharing can provide up to 900 W to a channel under supported conditions.

6. Selectable 2 Ω, 4 Ω, and 8 Ω low-impedance operation.

7. Selectable 25 V, 70 V, and 100 V constant-voltage operation per channel.

8. Bridged operation for compatible channel pairs.

9. Switchable 80 Hz high-pass filter per channel.

10. Switchable clip limiter per channel.

11. Removable Euroblock input and output connectors.

12. Remote volume-control ports for individual channels.

13. Remote standby control with selectable polarity.

14. Front-panel channel volume controls and power/standby switch.

15. Front-panel control lockout.

16. LED indicators for signal, peak/mute, temperature, protection, power, current, bridging, and power-sharing status.

17. SailFlow™ directed fan-cooling system.

18. Compact 2U rackmount construction.

Specifications:

• Brand: Ashly

• Series: MA Series

• Model: MA500.4

• Product Type: Four-channel professional power amplifier

• Amplifier Class: Class D

• Number of Channels: 4

• Output Power at 2 Ω: 500 W per channel

• Output Power at 4 Ω: 500 W per channel

• Output Power at 8 Ω: 500 W per channel

• Bridged Output at 4 Ω: 1,000 W per bridged channel pair

• Bridged Output at 8 Ω: 1,000 W per bridged channel pair

• 25 V Output: 500 W per channel

• 70 V Output: 500 W per channel

• 100 V Output: 500 W per channel

• Power Sharing: Intelligent allocation across groups of four channels, up to 900 W per channel under supported conditions

• Input Connectors: Removable 3.5 mm Euroblock

• Output Connectors: Removable Euroblock

• Input Impedance: 10 kΩ

• Maximum Input Level: +21 dBu

• Frequency Response: 20 Hz–20 kHz, ±0.05 dB

• Signal-to-Noise Ratio: Greater than 108 dB in low-impedance mode, unweighted

• THD+N: Less than 0.2% at 8 Ω, 10 dB below rated power, 20 Hz–20 kHz

• Typical SMPTE Distortion: Less than 0.5%

• Channel Separation: -75 dB at 1 kHz, measured from full output

• Damping Factor: Greater than 250 at 8 Ω, below 1 kHz

• Input Sensitivity: 3.87 V (+14 dBu) at 26 dB gain; 1.22 V (+4 dBu) at 36 dB gain

• High-Pass Filter: Switchable 80 Hz per channel

• Clip Limiter: Switchable per channel

• Remote Control: Individual remote volume-control ports and remote standby input

• Cooling: SailFlow™ directed fan-cooling system

• Rack Format: 2U, 19-inch rackmount

• Dimensions (W × H × D): 19 × 3.5 × 16.1 in (483 × 89 × 409 mm)

• Unit Weight: 21.5 lb (9.75 kg)

• Power Requirements: 100–240 V AC, 50–60 Hz

• Operating Voltage Range: 70–270 V AC, subject to minimum startup requirements

• Power Supply: Switching power supply with active power-factor correction

Included Accessories:

• Ashly MA500.4 power amplifier.

• Removable Euroblock input and output connectors, subject to the supplied package configuration.

• AC power cable, depending on the regional package.

Applications:

• Commercial multi-zone audio systems.

• Retail stores and shopping centres.

• Restaurants, bars, and hotels.

• Houses of worship.

• School auditoriums and educational facilities.

• Theatres and performance venues.

• Conference rooms and meeting facilities.

• Background music and paging systems.

• Distributed loudspeaker systems using compatible 25 V, 70 V, or 100 V lines.

• Multi-channel low-impedance loudspeaker installations.

• Professional installations requiring flexible channel-by-channel speaker configuration.

Included Accessories:

The amplifier uses removable Euroblock input and output connections. Confirm the exact number of supplied connectors and the regional power-cable configuration with the distributor.

Accessories (Not Included):

• Loudspeakers and subwoofers.

• Audio signal cables and speaker wiring.

• Equipment rack and rack hardware.

• Compatible remote volume controllers.

• External DSP processors, where required.

• Additional control wiring and installation accessories.

Size:

• Width: 19 in (483 mm)

• Height: 3.5 in (89 mm)

• Depth: 16.1 in (409 mm)

• Rack Height: 2U

Weight:

• Unit Weight: 21.5 lb (9.75 kg)

Electrical/Thermal:

• Nominal Input Voltage: 100–240 V AC

• Frequency: 50–60 Hz

• Operating Voltage Range: 70–270 V AC, subject to minimum startup requirements

• Power Consumption at Standby: Approximately 10 W

• Power Consumption at Idle: Approximately 55 W

• Power Consumption at One-Eighth Power: Approximately 375 W at 2 Ω, 340 W at 4 Ω, and 335 W at 8 Ω with all channels driven under the manufacturer's specified test conditions

• Cooling: SailFlow™ directed fan-cooling system

• Protection Features: Inrush-current protection, over-temperature protection, output DC protection, output over-power protection, AC mains voltage protection, and mains fuses

• Power Connection: AC mains connection; verify the exact connector and supplied cable for the regional unit.