Power Dynamics PMDA4500 - Professional 4-Channel Class-D Amplifier 100V

Power Dynamics PMDA4500 - Professional 4-Channel Class-D Amplifier 100V

The Power Dynamics PMDA4500 is a high-performance multi-channel amplifier designed to deliver a professional, reliable, and efficient sound reinforcement solution in a compact form factor. With its advanced Class-D amplification technology and a state-of-the-art switched-mode power supply, this unit ensures exceptional power with minimal energy consumption and low heat generation, making it ideal for installations operating continuously. Its robust 1U chassis makes it the perfect choice for integrators and projects where rack space is at a premium, without sacrificing power or features.

Designed for maximum versatility, the PMDA4500 offers four independent channels, each capable of delivering 500W on 100V lines or driving low-impedance speakers (350W at 8 ohms). Each channel features its own gain control and balanced inputs via locking Euroblock terminals, ensuring a secure and interference-free connection. This flexibility allows for the creation of complex zoned sound systems, managing different areas with independent volumes and audio sources from a single unit.

Main Features

• Class-D amplification technology: Provides energy efficiency exceeding 90%, resulting in lower power consumption and reduced operating temperature. This not only saves on operating costs but also extends the equipment's lifespan by minimizing thermal stress on components.
• Flexible 4-Channel Power: Offers four independent output channels with 500W per channel at 100V line or 350W per channel at 8 Ohms. Each channel has its own gain control for precise volume adjustment by zone.
• Compact 1U Design: Its robust metal chassis occupies only one unit of height in a standard 19-inch rack, optimizing space and allowing for clean and tidy installations.
• Automatic Standby Function: To maximize energy savings, the amplifier enters a low-power standby mode after one minute without an input signal. It reactivates instantly as soon as it detects a new signal, ensuring it is always ready to operate.
• Professional Connectivity: Each channel features balanced line inputs via Euroblock connectors, providing a secure and reliable connection, ideal for fixed installations. The speaker outputs also use this terminal format.
• Comprehensive Protection Systems: Equipped with complete protection circuits against short circuits, overload, overheating, clipping (distortion) and direct current (DC) passage, guaranteeing the safety of both the amplifier and the connected speakers.

Benefits for the Integrator and the User

The PMDA4500 is designed for easy installation and trouble-free operation. Rear-panel DIP switches allow for easy configuration of key per-channel functions, such as the 70Hz high-pass filter, ideal for PA systems where voice clarity is paramount and speakers need protection from unwanted low frequencies. The inclusion of a ground lift switch is essential for quickly eliminating potential hum and noise caused by ground loops in complex installations.

Use Cases

This amplifier is the ideal solution for a wide range of commercial and public address applications. Its ability to handle up to four independent audio zones makes it perfect for:

• Commercial Environments: Supermarkets, shopping centers and stores where background music and announcements are required in different departments with specific volumes.
• Hospitality: Hotels and restaurants that need sound reinforcement in different areas such as the lobby, dining room, conference rooms or pool areas.
• Public Institutions: Schools, town halls and banks for clear and audible warning systems in all facilities.
• Leisure and Sports Centers: Gyms, sports centers and other spaces that need a distributed, powerful and reliable sound system.

Frequently Asked Questions

What is a Class-D amplifier and why is it better?
A Class-D amplifier is a highly efficient type of switching amplifier. Unlike traditional classes (A, B, A/B), it converts power from the supply into sound with very little heat loss. This results in lower power consumption, lighter and more compact equipment (it doesn't require large heat sinks), and greater long-term reliability, especially under continuous use.

Can I use one channel for a 100V line and another for 8 Ohm speakers at the same time?
Yes, the output configuration for high impedance (100V) or low impedance (8/4 Ohms) is done independently for each of the four channels, giving it great flexibility to adapt to mixed speaker systems.

What advantage do Euroblock connectors offer?
Euroblock connectors (or terminal block connectors) are ideal for fixed installations because they allow for a very secure and robust cable connection. The cable screws directly into the connector, preventing accidental disconnections, which is crucial in commercial sound and public address systems.

Project description

4-channel amplifier with Class-D technology and a 19-inch (1U) rackmount design. Each channel delivers 500W line output at 100V, 350W into 8 ohms, or 400W into 4 ohms. It features four balanced line inputs with Euroblock connectors and individual gain control. A selectable 70Hz high-pass filter per channel, DIP switch configuration, ground lift, and a comprehensive protection system (short circuit, overload, temperature, clip, DC) are included. The frequency response is 20Hz to 20,000Hz. Dimensions: 375 x 482 x 44 mm. Weight: 9.2 kg.