Technical data
Input filter	400 Hz / -3 dB
Dimensions (W x H x D)	483 x 133 x 374 mm; 3 HE
Power consumption (230 V AC)	At 1/8 load: 3.1 A; at 1/1 load: 11.8 A
Output impedance	25 V, 50 V, 100 V
Frequency range	35 ~ 20.000 Hz (better -3 dB)
Signal-to-noise ratio	better than 100 dB
AC power supply	220–230 V, 50 ~ 60 Hz
Power consumption	2.520 W
Height units	3 HE
Input sensitivity	0 dB (0.775 V), 60 kOhm, symmetrical
DC power supply	24 V (emergency power)
Output power	2x 720/480 W (Program/RMS)
Total harmonic distortion	better than 0.4%
19" rack mounting

The BA-2480 DP is a professional, fully monitorable 2-channel 48,3 cm ( 19 inch ) power amplifier from RCS Audio-Systems, specifically designed for demanding ELA systems in 100 V, 50 V, and 25 V technology. It is suitable for reliable sound reinforcement in safety-critical areas such as train stations, airports, event venues, or industrial facilities. With an output power of 2 × 720 W (program) or 2 × 480 W (RMS), it provides sufficient power for large spaces and complex installations. Amplification is achieved via a high-quality toroidal transformer, ensuring stable and low-loss signal transmission. The amplifier is designed for continuous operation and features comprehensive protection functions, including short-circuit and no-load protection, ensuring safe operation.

Applications

The amplifier is primarily intended for professional ELA systems (Electronic Loudspeaker Systems), especially in environments requiring high operational safety and reliability. The 100 V, 50 V, and 25 V technology allows flexible adaptation to different loudspeaker systems and wiring conditions. Its use in public transport, industrial facilities, or large events is particularly suitable due to its high power output and integrated monitoring functions.

Functions and Equipment in Detail

Each channel features two symmetrical audio inputs: one for program signals and one for priority signals. The priority inputs have precedence, ensuring critical announcements (e.g., in emergencies) are always prioritized. Optionally, a pilot tone module (FD-20) can be installed per channel to monitor the amplifier’s functionality and speaker line for short circuits. Fault indication is provided via a potential-free relay contact. The inputs and outputs are electronically balanced, preventing hum interference caused by ground loops. Wiring is done via screw connectors, reducing the effort required for signal input and eliminating the need for XLR connectors.

Technology Explained Simply

The output impedance of 25 V, 50 V, and 100 V enables driving various loudspeaker systems operating in high-voltage technology (e.g., 100 V). The frequency response of 35 Hz to 20,000 Hz (better than -3 dB) covers the entire audible range, ensuring clear and detailed reproduction. The signal-to-noise ratio of better than 100 dB ensures high audio clarity, while the total harmonic distortion is below 0.4%, indicating low distortion. An optional input filter with 400 Hz / -3 dB can be used to suppress low frequencies, minimizing unwanted noise or hum interference. Power supply is via 220–230 V AC (50–60 Hz) and 24 V DC (emergency power supply), enabling redundant power supply. Power consumption is 2,520 W, with current draw of 3.1 A at 1/8 load and 11.8 A at full load.

Compatibility and Accessories

The amplifier is designed for mounting in 48,3 cm ( 19 inch ) racks and occupies 3 HE. Dimensions are 483 mm (W) × 133 mm (H) × 374 mm (D). Optionally, the pilot tone module FD-20 and the fault monitoring module FM-30 can be used. The FM-30 module monitors AC and DC power supply, fuses, and the fan, reporting faults via three potential-free relay contacts (NO/NC). Using these modules enhances the system’s monitoring capabilities.

Mounting and Installation

The amplifier is designed for mounting in standard 48,3 cm ( 19 inch ) racks. The screw connectors at the inputs and outputs simplify installation and reduce wiring effort. The front panel features multi-colored LED indicators showing operational status, faults, or protection functions. A power remote contact allows the device to be turned on even when the power switch is off. A soft-start circuit and start-up noise suppression ensure disturbance-free commissioning.

Operational Advantages

The BA-2480 DP offers high operational safety through integrated protection functions and monitoring capabilities. Electronic balancing and screw connectors reduce wiring errors. Support for emergency power supply (24 V DC) ensures functionality even in case of mains failure. Clear LED indicators for operational status enable quick fault diagnosis. The combination of high power, reliability, and integrated monitoring makes this amplifier a suitable solution for professional sound reinforcement systems.

Scope of Delivery

The scope of delivery includes the BA-2480 DP 2-channel power amplifier and a power cable.