MA40E | MA40E

MA40E

Art.-Nr.: MA40E

Cloud Electronics is a solely-owned British company based in Sheffield that designs, engineers and manufactures high- quality audio mixers, zoners, multi-channel amplifiers, and headphone distribution systems including the DCM-1 Digitally Controlled Mixer and the renowned VTX series of amplifiers. The company’s commercial audio products are designed with installation applications in mind and all are built and tested to the most exacting professional standards, to ensure outstanding reliability and consistent performance. Cloud Electronics products are distributed worldwide under the “Cloud” Brand.

Overview

40W Mini Amplifier with Ethernet Interface and DSP

The MA40E is a very compact stereo amplifier of advanced design, intended for integration into audio and AV systems where de-centralised installation is advantageous. It may be considered
an “install-and-forget” component, and is small enough to be fitted into a wall or ceiling void, or in any convenient location adjacent to projectors, flat screen displays or loudspeakers, for example. It
is highly suitable for use with in-store digital signage, gallery and museum exhibits and in fixed or mobile tour guide systems.

The MA40E is a mini amplifier providing 2 x 20W Output at 4Ω (low impedance). It is fitted with an ethernet and RS232 interface, two line inputs and a facility port input option allowing connection of the LM-2 wall input module and the new Cloud BT-1F Bluetooth Audio Wireless input module.

A greatly enhanced set of device features is available once the password-protected web pages are accessed through the Ethernet port. The web pages allow general device configuration and advanced control over signal routing, levels and an extended EQ sections, with a 7-Band room EQ, a 5-Band Speaker EQ and a variable high-pass filter for 70/100 V line systems. A multi-user system of passwords is catered for: each user can be given specific access privileges at installation to prevent unauthorised system adjustment.

The MA40E is powered via a 12-24V power supply and offers music mute functionality to allow simple connection to fire alarm and other interfaces and provides a great bridge between centralised and de-centralised solutions.

Product Details

Compact mono amplifier module for “install-and-forget” situations
Internal web server for simple and secure setup and control from any location
Two (unbalanced) line inputs with individual sensitivity trims
Front panel per-channel control of level
Front Panel HF & LF EQ
Selectable LINE 1-over-LINE 2 priority
Extensive set of DSP functions for advanced configuration: Input source selection, level control, 7-band room EQ section, variable-frequency high-pass filter for use with 100/70 V systems, 5-band Speaker EQ, Mono/stereo mode selection,
Comprehensive password/access privilege control
Facility port for connection of LM-2 or BT-1 remote input modules via screened Cat 5 cable; also allows remote control of music level and source
2x 20 W power amplifier with low-impedance (4 ohms) output
Music Mute control input (N/O or N/C) for interface to emergency system
RS-232 port for full serial control
Automatic power-down function
Convection cooled - silent in operation
Power requirements: 12 to 24 V DC, 60 W (3 W in sleep mode)

Line inputs

20 Hz to 20 kHz (+/- 1dB)

< 0.05 %

-12 dBu to +8 dBu

20 dB range

10 k ohms (unbalanced)

>10 dB

< -85 dB

Facility input

10 k ohms (balanced)

0.775 V (0 dBu)

-55 dBu

Equalisation

LF: ±10 dB @ 50 Hz, HF: ±10 dB @ 10 kHz

7-band parametric EQ with optional low and high shelf

Fourth-order high-pass filter, 40 Hz – 20 kHz

5-band parametric EQ

Output

2x 20 W (DC input >15 V)

General

12 V to 24 V DC / 60 W

100 V to 240 V

220 x 41 x 144.5 mm

750 g

MA40E_datasheet_en