AUDAC
SMA750
WaveDynamics™ Dual Channel Power Amplifier
Features
- 2 x 750 Watt RMS output power
- Lightweight Class-D amplifier
- Advanced DSP & loudspeaker management
- Intuitive graphical interface on 2.5” LCD display
- Pre-loadable loudspeaker & set configurations
- Unmatched technology and affordability
- Flexible input and output configuration
- XLR & terminal block source compatibility
- RS-232 control and USB loadable configurations
Applications
- Clubs & pubs
- Restaurants & bars
- Warehouses & retail stores
- Public & office buildings
- Mobile applications
- ...
The SMA & SMQ amplifiers are defining a new standard in affordable amplification for both fixed and
mobile audio installations. Their different channel
configurations and availability in various output powers provide an enormous flexibility for numerous applications.
The SMA750 is the two channel version of this
Class-D power amplifier with an output power of
750 Watt for each channel. The WaveDynamics™
DSP processor in combination with the 2.5” LCD
display gives an unmatched user experience with
intuitive functions overview for easy configuration.
Acoustics can be optimized using the filters selectable between Low / High & Band Pass and the
7-Band equalizer both with adjustable frequencies
and Q-factor. Other provided functions are delay
and dynamic bass boost. These settings can be custom configured using the front panel of the amplifier,
whereby access can be given on two different levels
(User & Administrator) using password or USB-key
protection. Loudspeaker protection is provided by an
output power limiter whereby the maximum output
power for every channel (in Watt) can be configured.
Configuration is made simple by the loudspeaker
presets and full system configurations which can selected from a library and uploaded with a USB flash
drive. This ensures the best acoustical performance
with a ‘bullet-proof’ loudspeaker protection.
A great input flexibility and source compatibility is
provided by the input selection matrix in combination
with the XLR and terminal block signal connections.
The outputs are performed using speakon compatible and terminal block connections. System integration is made easy using the RS-232 control port.
Specifications
SYSTEM SPECIFICATIONS
RMS Power @ 4 Ohm Stereo
RMS Power @ 8 Ohm Stereo
RMS Power @ 8 Ohm Bridge
Frequency response
Signal to noise ratio
THD+N by 1 kHz (1/2 Rated Power)
Crosstalk
Technology
Power supply
Power supply range
Input Sensitivity
Input Impedance
Common mode rejection ratio
Damping factory
Protection
Amplifier
Loudspeaker
Access
Cooling system
Operating temperature
Connectors
Input
Output
PRODUCT FEATURES
Dimensions (Width x Height x Depth)
Weight net
Mounting
Unit height
Construction
Colour
SHIPPING & ORDERING
Packaging
Shipping weight and volume
2 x 750 Watt
2 x 380 Watt
1500 Watt
20 Hz - 20 kHz
> 95 dB
< 0.05 %
> 70 dB
Class - D
Switching mode
230 ~ 240 V AC / 50 ~ 60 Hz
-19.5 dB ~ 27 dB
10 k Ohm balanced
70 dB
> 200
DC Short-circuit
Over heating
Over load
Signal limiting
Output power limiter
User & Administrator level
(Through password and USB-key protection)
Temperature controlled fan (Infinitely)
0° ~ 40° at 95% Humidity
XLR & 3-pin Terminal block (3.81 mm)
Speakon compatible & 2-pin terminal
block (5.08 mm)
482 x 88 x 420 mm
7.5 Kg
19”
2 HE
Steel
Black
Carton box
11.5 Kg - 0.046 Cbm
*AUDAC reserves the right to change specifications without notice: this is part
of our policy to continually improve our products
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Architects’ and Engineers’ Specifications
The amplifier shall use WaveDynamics™ audio processing technology with two independant controllable channels each of them with
an output power of 750 watt. The construction shall be transformerless, using Class-D amplifier technology and powered by a switching
power supply.
Acoustics shall be adjustable using the integrated DSP which provides advanced processing functions to each channel such as
parametric 7-band equalizing, filters selectable between low-pass, high-pass and band-pass with Butterworth, Linkwitz-Riley or Bessel
characteristics. Other functions such as output power limiting, time alignment delay and dynamic bass boost shall also be implemented.
Each channel shall have integrated circuitry to protect against short-circuits or mismatched loads and over-heating. The operating
temperature for each channel shall be continuously monitored and a speed-controlled fan will keep it within the operating range while
minimising the acoustic noise. Additionally, the load shall be protected against DC faults and a clip limiter shall automatically reduce the
input gain at onset of distortion.
Full system control and monitoring shall be possible from the front panel of the amplifier equiped with an AC power switch, a blue power
indicator LED and channel operation indicator LED’s. Two green signal LED’s indicating the presence of an input signal and it’s level
exceeding the -20 dB level, a clip LED indicating the channel operation at maximum level and a protection LED indicating any fault
detected shall be provided for each channel. Additionally, a user-friendly and intuitive graphical interface shall be shown on a 2.5” LCD
on front allowing control for each of its functions. System access shall be lockable with password and USB-key protection on two different
(user & administrator) levels. Uploading of pre-made configurations and loudspeaker presets shall be possible from a USB flash drive.
Great input flexibilty and source compatibility shall be provided through an input selection matrix in combination with the balanced signal
input connections which are available as female XLR connectors and 3-pin terminal block connectors. The output connections shall be
performed using Speakon compatible and 2-pin terminal block connectors, allowing connectivity of multiple loudspeaker lines on one
amplifier channel.
The amplifier shall operate on a 230~240 V AC / 50 Hz mains network and shall be equipped with a removable power
cord having a standard shuko (CEE 7/7) AC plug. The connector on the amplifier chassis shall be a fused IEC C14 type.
The amplifier chassis shall be a two rackspace steel constructed 19’’ housing. Depth from mounting surface to rear supports shall be 420
mm and the weight shall not exceed 7.5 Kg.
Block diagram
CHANNEL 2
CHANNEL 1
DSP
ANALOGUE
GAIN
Input 1
Input 2
OFF
INPUT SELECT
ADC
DAC
Digital
Audio Filters
ADC
7 Band
EQ
Speaker
Presets
Time
Alignment
Speaker
Protection
Limiter
Dynamic
Bass
VU READ
RS232
SMA750
Prot
FUNCTION
Clip
AUDA C
-20dB
Sig
ON
POWER
CH1C
H2
Front
CPU
AMP
ADC
TEMP
ADC
Level
USB
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