RCS Audio-Systems MA-1410 B 10-channel mixing preamplifier, 1 U content_copy

The MA-1410B from RCS Audio-Systems is a professional 10-channel mixing preamplifier designed for use in general sound systems, for example in conference rooms, buildings, or voice alarm systems. The device features ten individually adjustable audio inputs that can be flexibly switched between microphone and line level, and offers functions such as priority control, integrated electronic gong, and flexible output assignment. Operation is performed via slide switches and rotary controls on the front panel, enabling intuitive operation even in complex installations.

Applications

The MA-1410B is suitable for a wide range of applications in the field of sound technology, particularly for systems requiring prioritization of signal sources, such as voice alarm systems, paging systems, or conference installations. The ability to operate the device with both 230 V AC and 24 V DC makes it especially suitable for safety-critical installations where backup power supply is required. The balanced inputs and outputs ensure high signal quality and low interference, which is advantageous in professional installations.

Functions and Equipment in Detail

Each of the ten input channels features a MIC-LINE selector switch, allowing selection between microphone and line signals. The MIC inputs are equipped with phantom power (+15 V DC), enabling direct connection of both electret and dynamic microphones. Channels 7 to 10 are additionally equipped with RCA inputs for unbalanced line signals. Each channel features a signal LED indicating the presence of a signal. Channels 2 to 10 can optionally be equipped with a low-cut filter (300 Hz) to reduce background noise.

An integrated electronic gong, switchable between 2- and 4-tone modes, can be triggered manually via a switch on the front panel or automatically via a desktop microphone station (e.g. VLM-100A via RJ-45). The gong features its own volume control and has priority over channels 4 to 10, which are muted when the gong is activated. The signals from individual channels can be routed selectively to Master 1, Master 2, or both master outputs, with each master channel featuring separate level and EQ controls.

Technology Explained Simply

The frequency response of the device is 20 to 20,000 Hz with a deviation of better than ±0.5 dB, enabling clear and undistorted reproduction of the entire audible range. The signal-to-noise ratio is better than 60 dB for MIC inputs and better than 75 dB for LINE inputs, indicating high signal quality and low noise levels. The total harmonic distortion is less than 0.05 % for MIC inputs and less than 0.03 % for LINE inputs, indicating very low signal distortion. Crosstalk attenuation is better than 60 dB for MIC inputs and better than 75 dB for LINE inputs, ensuring clear channel separation. The MASTER 1 and 2 outputs deliver a balanced signal at +4 dBu (1.23 V) with 200 Ohm impedance, typical for professional installations. The REC output is unbalanced and delivers a signal at 0 dBu (0.775 V) with 10 kOhm impedance, suitable for recording devices.

Compatibility and Accessories

The MA-1410B is compatible with desktop microphone stations such as the VLM-100A, which can be connected to the device via an RJ-45 connection to trigger the gong automatically. The rear panel features a connection for an external gong remote control, enabling flexible operation. Power supply is via 230 V AC (50–60 Hz) or 24 V DC, with the latter suitable for backup power applications. Dimensions are 483 x 44 x 200 mm, corresponding to standard 48,3 cm ( 19 inch ) rack mounting with 1 U.

Mounting and Installation

The device is designed for mounting in 48,3 cm ( 19 inch ) racks and can therefore be integrated into existing installations. The front panel provides all necessary controls, including rotary controls for level adjustment, slide switches for output assignment, and LED indicators for level monitoring. The rear panel features all necessary connections, including XLR inputs, RCA inputs, XLR outputs for Master 1 and 2, a REC output, and power supply connections.

Operational Advantages

The MA-1410B offers high flexibility through individual control of the ten inputs and priority functions, ensuring that important signals (e.g. alarms or announcements) are not overlapped by other inputs. The integrated 5-segment LED level meter per master channel enables visual monitoring of output levels. Operational reliability is enhanced by the option of backup power supply with 24 V DC. The balanced inputs and outputs ensure robust signal transmission, which remains stable even over long distances. Simple operation via front panel controls facilitates daily use and maintenance of the device.

Scope of Delivery

The scope of delivery includes the MA-1410B mixing preamplifier, a power cable, and an operating manual.

Technical data
Crosstalk attenuation	MIC: better than 60 dB, LINE: better than 75 dB
Height units	1 HE
Dimensions (W x H x D)	483 x 44 x 200 mm; 1 HE
Power supply	230 V AC (50-60 Hz), 24 V DC
Outputs	MASTER 1 + 2: NOR +4 dBu (1.23 V)/200 Ohm, symmetrical; REC: NOR 0 dBu (0.775 mV)/10 kOhm, asymmetrical
Signal-to-noise ratio	MIC: better than 60 dB, LINE: better than 75 dB
Inputs	MIC: -50 dBu (2.45 mV)/5 kOhm, symmetrical, phantom power LINE: -10 dBu (245 mV)/5 kOhm, symmetrical LINE-Cinch IN: -10 dBu (245 mV)/10 kOhm, asymmetrical
Power consumption	9,9 W
Total harmonic distortion	MIC: better than 0.05 %, LINE: better than 0.03 %
Frequency response	20 - 20.000 Hz, better than -0.5 dB
19" rack mounting

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