Power Dynamics PRS120 - 100V / 120W Line Booster Amplifier

Power Dynamics PRS120 - 100V / 120W Line Booster Amplifier

The Power Dynamics PRS120 is a power amplifier, also known as a "booster" or slave amplifier, specifically designed to expand and enhance professional 100V line sound systems. With a robust 120W of power, this unit is the ideal solution for adding extra power to any audio installation using Power Dynamics PRM series amplifiers, ensuring wider and more robust sound coverage in medium and large-sized installations.

Built for simple and efficient integration, the PRS120 features unbalanced line inputs that make it easy to connect to mixers or the preamp output of another amplifier. Its versatile output allows it to work with both low-impedance (8 Ohms) speakers and 100V line systems, making it a flexible choice for a wide variety of distributed audio setups. It also includes an input gain control for precise signal level adjustment and optimized system performance.

Designed for reliability and safety, the PRS120 incorporates multiple protection systems, including thermal overheating protection, overload protection, and short-circuit protection. Its robust design is ready for standard 19-inch rack mounting (occupying 2U of space), and the necessary brackets for a clean and professional installation are supplied. A key feature is its ability to operate in emergency mode using an external 24V battery (not included), ensuring the continued operation of critical public address or warning systems even during power outages.

Main features

• 120W RMS Power: Offers considerable amplification to expand existing sound systems or power additional zones.
• Versatile outputs: Compatible with 8 Ohm speakers and 100V line systems, providing great flexibility in installation design.
• Easy integration: Designed as a backup amplifier for Power Dynamics' PRM series, with unbalanced inputs for direct connection.
• Gain Control: Allows precise adjustment of the input level for optimal and balanced sound performance.
• Comprehensive Protection Systems: Equipped with overheating, overload and short circuit protections to ensure safe operation and a long service life.
• 19" Rack Mounting": Includes brackets for easy integration into standard rack cabinets, ideal for fixed and professional installations.
• Emergency Power Supply: It has a 24V battery input (not supplied) to keep the system operational in case of failure of the main power supply.

Product benefits

The Power Dynamics PRS120 is the perfect choice for sound installers and technicians who need a reliable and efficient solution for scaling a public address system. Its ability to add 120W of power allows for covering larger areas, adding more speakers, or increasing the overall volume without compromising sound quality. The flexibility of its 8 Ohm, 100V outputs simplifies logistics, allowing its use in different types of projects with a single device. Its robust construction and protection circuitry ensure continuous, trouble-free operation, minimizing maintenance and maximizing reliability—crucial in commercial and institutional environments.

Use cases

This booster amplifier is ideal for a wide range of distributed sound applications, such as public address and background music systems in commercial spaces (shops, supermarkets), educational institutions (schools, universities), industrial buildings, warehouses, offices, hotels, restaurants, and leisure centers. It is especially useful in projects where an existing installation needs to be expanded to cover new areas or when greater sound power is required to overcome ambient noise.

Frequently Asked Questions

Can I use this amplifier independently?
Yes, although it is designed as a "booster" or slave amplifier to be connected to another amplifier with a preamp, it can also work independently if connected to a line-level audio source, such as a mixer or player.

What does it mean for it to be a "100V line" amplifier?
A 100V line system allows multiple speakers to be connected in parallel over long distances with minimal power loss, using smaller gauge cables. It is the standard for commercial sound and public address installations.

Are rack mounting brackets included?
Yes, the Power Dynamics PRS120 includes the necessary brackets for mounting in a standard 19-inch rack.

What type of battery do I need for emergency operation?
A 24V DC power source, such as a battery system, is required, which is not included with the amplifier.

Project description

This power amplifier/booster (slave) delivers 120W RMS of output power. It offers output options for low-impedance speakers down to 8 ohms and for 100V line systems. It features unbalanced line inputs and input gain control. Overheating, overload, and short-circuit protection are included. A 24V DC emergency power connection is provided. The chassis is designed for 19-inch (2U) rack mounting. The frequency response is 50Hz to 18,000Hz. The main power supply is 100-240VAC at 50/60Hz.