Technical data
Inputs MIC – AUX/LINE	All inputs are electronically balanced, MIC-1 (CH-1) with priority circuit (adjustable). For all models, inputs 2, 3 and 4 (CH 2, 3 and 4) are symmetrical on 3-pole XLR socket, remaining inputs on jack (6.3 mm) or RCA
Output power	60 W RMS (max. 90 W)
Total harmonic distortion	Better than 1%
Power supply AC/DC	230 V AC (50-60 Hz), 24 V DC
Two-tone gong and siren	Two-tone gong is remotely operable, siren optionally with rising/falling or constant tone.
Noise level	MIC better than 60 dB, AUX/LINE better than 70 dB
Dimensions (W x H x D)	420 x 110 x 320 mm
Additional input or output	Serves as preamplifier output or amplifier input.
Frequency response	50 Hz -18.000 Hz (± 3 dB)
Outputs, speakers	100 V – 167 Ohm, 70 V – 83 Ohm, 4 – 8 Ohm

The CPA-3060C small central unit from RCS Audio-Systems is a professional sound system designed for use in ELA systems (electrical loudspeaker systems). It features a rated power output of 60 W RMS (maximum 90 W) and is intended for use in rooms or buildings requiring central, reliable, and flexible loudspeaker control. The device is short-circuit and no-load proof, ensuring high operational safety, and meets modern requirements for professional sound technology.

Applications
The CPA-3060C is suitable for use in office buildings, schools, hospitals, industrial facilities, or public institutions where central loudspeaker control with emergency call and alarm functions is required. The integrated siren and electronic two-tone gong enable the output of warning and alarm tones, with the siren optionally operating in constant tone or rising/falling signal mode. The two-tone gong is remotely controllable, allowing flexible use via external control devices such as the MS-202 microphone station.

Functions and Equipment in Detail
The device features multiple inputs, all electronically balanced. The MIC-1 (CH-1) input is equipped with an adjustable microphone priority circuit, ensuring that emergency calls or voice messages are always prioritized. Inputs 2, 3, and 4 (CH 2, 3, and 4) are connected via 3-pole XLR sockets, while the remaining inputs use jack sockets (6.3 mm) or RCA sockets. Additionally, a CD input and a PHONO input are integrated via RCA sockets. A dedicated input for a telephone exchange allows integration into existing communication systems.

Technology Explained Simply
The output power of 60 W RMS (max. 90 W) is sufficient for medium to large rooms. The frequency response curve from 50 Hz to 18,000 Hz (± 3 dB) ensures clear and complete reproduction of the entire audible range. The total harmonic distortion is better than 1 %, indicating high signal quality. The signal-to-noise ratio exceeds 60 dB for MIC inputs and 70 dB for AUX/LINE inputs, ensuring clean audio transmission. Power supply is via 230 V AC (50–60 Hz) or 24 V DC, enabling flexible installation in various environments.

Compatibility and Accessories
The CPA-3060C offers multiple loudspeaker outputs: 100 V (167 Ohm), 70 V (83 Ohm), as well as low-impedance outputs for 4 and 8 Ohm. This allows driving various loudspeaker configurations, including high-voltage lines for larger installations. An additional input/output serves as a preamplifier output or amplifier input, facilitating integration into existing systems. Power output can be extended by cascading additional 48,3 cm ( 19 inch ) power amplifiers. A blank slot in the device allows installation of a media module, such as a CD or MP3 player, to enable music or information transmission.

Mounting and Installation
The device measures 420 mm (W) × 110 mm (H) × 320 mm (D) and is designed for installation in 48,3 cm ( 19 inch ) racks. A matching 48,3 cm ( 19 inch ) mounting kit (3 U) is available as an accessory to ensure secure and orderly rack mounting. The rear panel features various connectors, including an impedance switch for 100 V and 70 V, a DC connection (24 V DC), a fuse holder, and an optional antenna connection (only for certain modules). The remote control function for the two-tone gong and the ability to use the telephone exchange input increase installation flexibility.

Operational Advantages
The CPA-3060C offers high operational safety through short-circuit and no-load protection. Electronic balancing of inputs minimizes interference and ensures stable signal transmission. Remote control functions and the option to install media modules extend the device’s functionality. The dual power supply option (230 V AC and 24 V DC) enables flexible use, including in emergency situations with backup power. Integrated loudspeaker switching fields (3 zones) and group call functions allow targeted control of different areas.