Audiocenter MA Series User manual

Installation
MA Series Active Speaker
MA series active DSP-controlled speaker
MA Series is a portable active DSP-controlled speaker. It is Audiocenter ’s first lightweight integrated speaker crafted
with excellent sound, compact size, and stylish industrial design. It is versatile, portable and plug-and-play, and can be
used in various touring performances and fixed installations.
MA series cabinets are molded and made from a new type of polypropylene composite material. They are one-piece
molded, strong and wear-resistant, and can suppress vibration even under high dynamics. The cabinet structure has
been carefully tested and developed to achieve the ultimate acoustic performance, providing clear, delicate and smooth
sound.
The MA series is built with the advanced BrainCore™ technology, which can deeply analyze and process signal input,
Class D amplifier and DSP module, and optimizes the audio performance of the whole system.
Built-in wireless Bluetooth makes MA can easily connect with various Bluetooth devices.
MA series has two models of full-range speakers, MA12 and MA15. Both are created with features of excellent sound
performance, compact size, and modern design, and easy to use. They can be used as PA speakers and stage monitor.
There are multiple way of mounting and installation, for example, pole mount with a three-feet stand, or hanging
installation.

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POWER indicator
LIMITER indicator
SIGNAL indicator
PROTECT indicator
FRONT LED DISABLE switch
BLUETOOTH indicator
BLUETOOTH PAIR pairing button
LOW SHELF 100Hz LF control
The indicator is on when speaker is connected to power.
MA Series Active Speaker
Control panel and functions
The indicator is on when output limiter is activated. If the output voltage of the amplifier exceeds the maximum value,
output limiter will be activated, lower the output signal of the amplifier.
The indicator is on when the input signal is detected.
The indicator is on when the system detects abnormal of the speaker and starts protection mode.
Switch on and the front panel LED indicator is on (operating mode: blue);
Switch off when the front panel LED indicator is unneeded.
When the indicator is off, it indicates no connection to any Bluetooth devices (for example, mobile phone);
When the light is on,it indicates that the speaker has been successfully connected to Bluetooth devices (for example,
mobile phone);
When the light is flashing (1 time in 1 sec), it indicates that the speaker is ready for Bluetooth pairing with a device (for
example, mobile phone).
When the light is flashing (3times in 1 sec), it indicates that the speaker is in Bluetooth speaker-to-speaker pairing
mode (for the first time two speakers work as a pair they need to match each other).
Remark: The speaker-to-speaker pairing means two MA speakers can work as a pair (by Bluetooth) and connect to the
same Bluetooth source (for example, mobile phone).
If you want to connect speaker to a Bluetooth source (for example, a mobile phone), first press "Bluetooth pair" button
for 3 seconds (the indicator flashes 1 time in 1 second), and then choose "AC-MA"as the Bluetooth source to pair.
If you want to pair two speakers for the first time, press "Bluetooth PAIR" button of both speakers for 5 seconds
(Bluetooth indicator flashes 3 times in 1 second). The two speakers will be paired automatically.
This is a low shelf filter with 100Hz cut-off frequency. Turn the knob to reduce or boost the low frequency when signal
frequency is lower than 100Hz.
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EQ parameter equalizer
FREQ: center frequency 160Hz, 320Hz, 630Hz, 1KHz, 1.6KHz, 2.5KHz, 4KHz, 6.3KHz, 8KHz optional. GAIN: reduce
or boost the selected central frequency signal.
HIGH SHELF 10KHz HF control
GAIN A control
GAIN B control
GAIN C/D control
LINE/MIC switch
INPUTS socket(LINE A/ MIC)
Balanced XLR and PHONE type multi-purpose input socket.
INPUTS socket(LINE B)
Balanced XLR and PHONE type multi-purpose input socket.
INPUTS socket(AUX)
3.5mm input socket.
OUTPUTS socket(MIX OUT)
LOW CUT 80Hz switch
Power Switch
AC INPUT slot
Use GAIN A knob to control gain of input signal from LINE A/MIC. GAIN A can adjust the sensitivity and thus control the
volume of signal sent to the amplifier and then to the speaker.
Use GAIN B knob to control gain of input signal from LINE B. GAIN B can adjust the sensitivity and thus control the
volume of signal sent to the amplifier and then to the speaker.
Use GAIN C/D knob to control gain of input signal from BLUETOOTH C/D and AUX. GAIN C/D can adjust the sensitivity
and thus control the volume of signal sent to the amplifier and then to the speaker.
According to the level of the input signal, set the LINE/MIC switch to LINE or MIC. For low-level signals (such as
microphones), switch to the MIC position (upwards); for high-level signals (such as electroacoustic instruments and
audio equipment), switch to the LINE position (downwards). Generally, when the microphone is not in use, the switch
should be at LINE.
Set cut-off frequency of the high pass filter at 80Hz, the filter will eliminate the frequency lower than 80Hz. Press the
switch and activate the function of filter.
To turn on the power,pull the switch upwards to position (1); To turn off the power, pull the switch downwards to the
position (0).
Connect the power cable to the input slot first, and then connect to the AC power.
Note: MA series employs a universal power supply, supporting AC power input voltage range at 100-240Vac (50 / 60Hz).
Please choose the right power cable.
MA Series Active Speaker
This is a Peaking Filter, used together with GAIN knob and FREQ knob.
This is a High Shelf Filter with 10kHz cut-off frequency. Turn the knob to reduce or boost the highfrequency when signal
frequency is higher than 10KHz.
Balanced XLR output socket. Balance the mixed output signal (able to mix and integrate the signals of all channels).

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H
D
50Hz-20KHz
80 x50
MA12 MA15
131dB 133dB
Class D
1600W
20Hz-20kHz(±1dB)
100V~240V 50Hz/60Hz
345x610x352mm
14.0Kg
417x702x426mm
17.5Kg
MA series parameters
Frequency response
(- 6dB anechoic chamber)
Maximum SPL
LF driver
HF driver
Coverage angle (symmetrical)
Amplifier
Amplifier
Maximum output power
Frequency response
Protection
Cooling
Back panel
processor
Signal input
Signal output
Power input
Working voltage
Cabinet
Monitor angle
Pole mount gear
Cabinet material
(WxHxD)Dimensions
Net weight
Audiocenter customized LF driver,
2.5-inch voice coil
Audiocenter customized LF driver,
3-inch voice coil
Audiocenter customized HF driver,1.4-inch voice coil
DC, short circuit, overheating, input and output overload, soft start, overvoltage and
undervoltage protection
Air convection
96KHz signal sampling frequency, 24bit quantization accuracy
2x female XLR input (6.35 three core), Bluetooth, 3.5mm three core
1x male XLR output
IEC female connector
Symmetrical 45 ° monitoring angle
35mm mounting hole
New polypropylene composite material
Drawings
MA Series Active Speaker
45Hz-20KHz