CA504 4-Channel Power Amplifier

The Ashly CA504 is a four-channel, high-efficiency Class D power amplifier designed for professional sound reinforcement and commercial audio installations. Delivering 500 watts per channel at 2 or 4 ohms, it combines compact rackmount construction, flexible input connectivity, selectable channel gain, and integrated protection features. Its ability to drive low-impedance speaker loads and support bridged 70V/100V applications makes it suitable for a wide range of installed and live sound systems.

From The Manufacturer:

The Ashly CA Series was developed to provide high output power with improved energy efficiency and controlled thermal performance. Its D-MAX amplifier design and SailFlow cooling architecture help manage heat while maintaining reliable operation under demanding conditions.

The series is designed for performance venues and commercial installations, including theatres, houses of worship, auditoriums, stadiums, and other professional sound environments. The CA504 combines four amplifier channels with flexible input connections, configurable gain, and support for low-impedance and constant-voltage speaker systems.

Key Features:

• Four-channel Class D power amplifier.

• Delivers 500 watts per channel at 2 ohms and 4 ohms.

• Provides 250 watts per channel at 8 ohms.

• Supports bridged operation for higher-power applications.

• Supports bridged 70V and 100V constant-voltage applications.

• D-MAX high-efficiency amplifier design.

• SailFlow cooling architecture with temperature-controlled fans.

• Balanced XLR, 1/4-inch TRS combo, and Euroblock input connections.

• Euroblock speaker output connections.

• Selectable input gain settings for each channel.

• Switchable 80Hz high-pass filter and clip limiter per channel.

• Front-panel level controls and status indicators.

• Remote DC level control and remote standby functionality.

• Built-in protection against overheating, output faults, and excessive power conditions.

Specifications:

• Brand: Ashly.

• Model: CA504 / CA-504.

• Product type: Professional power amplifier.

• Amplifier class: Class D.

• Number of channels: 4.

• Output power at 2 ohms: 500W per channel.

• Output power at 4 ohms: 500W per channel.

• Output power at 8 ohms: 250W per channel.

• Bridged output power: 1,000W per channel pair at 4 ohms, subject to the manufacturer's specified operating conditions.

• Constant-voltage operation: 70V and 100V in bridged mode.

• Input connectors: XLR/1/4-inch TRS combo and 3.5mm Euroblock.

• Speaker output connectors: 7.62mm Euroblock.

• Input impedance: 10k ohms.

• Maximum input level: +21dBu.

• Input gain settings: 26dB, 32dB, 38dB, or 1.4V sensitivity.

• Frequency response: 20Hz–20kHz, ±0.05dB.

• Typical THD+N: Less than 0.5% under the specified test conditions.

• Cooling: Temperature-controlled fan cooling.

• Power supply: Switched-mode power supply with active power factor correction.

• AC input: 100–240V AC, 50–60Hz nominal.

• Compliance: cTUVus, CE, FCC Class B, and RoHS.

Included Accessories:

• Manufacturer-specified detachable AC power cord.

• Other accessories supplied in the box should be confirmed with the distributor.

Applications:

• Houses of worship and church sound systems.

• Theatres and auditoriums.

• Live sound reinforcement.

• Concert venues and performance spaces.

• Commercial audio installations.

• Multi-zone loudspeaker systems.

• Low-impedance passive loudspeaker systems.

• Suitable bridged constant-voltage applications using compatible 70V or 100V speaker systems.

Included Accessories:

• AC power cable, subject to regional supply configuration.

• Additional accessories: Not confirmed.

Accessories (Not Included):

• Rack cabinet or rack case.

• Audio signal cables.

• Loudspeaker cables and compatible Euroblock connectors, if not supplied.

• Remote DC level controllers.

• Loudspeakers.

• External audio processing equipment, where required.

Size:

• Width: 483mm (19 inches).

• Height: 89mm (3.5 inches).

• Depth: 409mm (16.1 inches).

• Rack format: 2U.

Weight:

• Net weight: 7.95kg (17.5lb).

• Shipping weight: 9.76kg (21.5lb).

Electrical/Thermal:

• Nominal AC input: 100–240V AC.

• Frequency: 50–60Hz.

• Operating voltage range: 70–270V AC, according to the manufacturer’s manual.

• Cooling system: Continuously variable, temperature-controlled fan cooling.

• Protection features include inrush-current limitation, over-temperature protection, output DC protection, output over-power protection, and AC mains protection.

• Environmental operating temperature: 0°C–49°C, non-condensing.