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****** Page 1 ****** SMA & SMQ User Manual AUDAC audac.eu

****** Page 2 ****** Index Introduction Precautions Safety requirements Caution servicing EC Declaration of Conformity Waste of Electrical and Electronic Equipment (WEEE) Caution Chapter 1: Pin connections and connectors Connection standards Wire up the system Chapter 2: Front & rear panel Front panel overview Front panel description Rear panel overview Rear panel description Chapter 3: Quick start guide Connecting the amplifier Configuring the amplifier Ready Chapter 4: Connecting the amplifier Input connections Output connections Connection examples Wire up the system 2 4 7 7 7 7 8 8 9 9 11 11 11 11 12 13 14 14 14 15 16 16 16 17 19

****** Page 3 ****** Chapter 5: Configuring the amplifier Menu structure overview Main screen Settings menu Level Input Mute Output setup Filters Equalizing Delay Max level Standby Limiter Dynamic bass Bridge Clear presets General setup Input gain Password LCD USB Info Temperature Factory reset Save Lock Chapter 6: Additional information Technical specifications 20 20 21 21 21 22 22 22 22 23 24 24 24 24 25 25 25 26 26 26 27 27 28 28 28 28 28 30 30

****** Page 4 ****** Introduction WaveDynamicsTM Class D power amplifiers SMQ750 AUDAC SMA750 AUDAC The SMA & SMQ series are Class D Power Amplifiers featuring WaveDynamicsTM audio processing technology. They come in different output configurations with two or four channels and are available in output powers of 350 Watt, 500 Watt and 750 Watt. Their great flexibility and different configurations make it the solution for nearly every system, no matter if it’s a fixed installation or a mobile application. Speaker Presets 7 Band EQ Digital Audio Filters Time Alignment Dynamic Bass 4 WaveDynamicsTM A complete library of AUDAC loudspeaker and set solution presets is available for your propcts, making it easy as picking the right file, loading it & play! Besides the optimal acoustic configurations, this library also includes the loudspeaker performance parameters providing a bulletproof protection for them. The 7—band fully parametric equalizer with adjustable frequency and Q factor and Butterworth, Bessel and Linkwitz—Riley filters with selectable roll-off allow you to create custom configurations, tweak your setup to the finest detail and adapt to your rooms acoustics. A delay function allows time alignment of different speakers in your installation. Configurations also allow you too bridge the outputs, doubling the output power of stereo channels to one mono channel or make a single three—channel amplifier driving a complete setup composed of stereo mid/high frequency speakers and a bass cabinet. Controllability The operation and configuration of the device can be done in multiple ways. The most obvious way is by using the front panel controls, featuring a rotary selection dial and channel selection buttons with a clear and intuitive user inferface on the 2.511 graphical LCD Display. Total system configurations for pre—defined set solutions can be loaded into the amplifier using the USB port. Integration of the audio system into home and industrial automation systems is made easy through the RS—232 connection & control port whereby functions such as input switching, volume adjustment, … can be controlled.

****** Page 5 ****** Input Matrix Speaker Protection o Lockable Limiter Energy Efficiency Flexibility Every system comes with different requirements and every customer has his own preferences. Because of this, the structure is made as flexible as possible. This is achieved by an input selection matrix. Each of the input connections can be patched to any amplifier channel and contains software controllable gain. The different implementations of the in— and output connectors allow the easiest way of connection for every application, while allowing signal link through to other amplifiers. Protection Optimal protection is not only required for the listeners satisfaction, but can also be important for complying to the imposed regulations and guaranteeing the lifetime of the equipment. Because of this, protection precautions are implemented in different ways. Firstly, user access is made possible on different levels. The device can be blocked or accessed in user or administrator level. Different levels allow different configuration and control functions, giving limited (Eg: only volume) control access to standard users and full configuration control to administrators. User restriction can be enabled & disabled and is given through password and / or USB—key. Secondly, equipment protection is implemented by an output limiter which monitors the output power of every channel and will intervene when the output exceeds a certain level. The corresponding level can be software configured and is indicated in Watts. When the output limiter is configured at the maximum power of the loudspeaker, you can rest assured that the speakers won’t be blown during your absence. Lastly, the maximum volume for every channel can be set indepentently. This prevents users (having volume access) going over the limit. This can help you to keep the system compliant with imposed regulations and maintain the good relationship with the neighbors. Efficiency The switching mode power supply and Class D Amplifier technology in combination with the auto—standby mode for each separate amplifier channel brings an end to the era of the power— hungry amplifiers. In addition, these features also result in a lightweight amplifier which benefits the customer when used in mobile applications. CHANNEL INPUT SELECT Alt.nm«t Prot•et Level DSP s gsg VU READ •0• RS232 CPU Front USB ADC AMP 5

****** Page 7 ****** Precautions READ FOLLOWING INSTRUCTIONS FOR YOUR OWN SAFETY ALWAYS KEEP THESE INSTRUCTIONS. NEVER THROW THEM AWAY ALWAYS HANDLE THIS UNIT WITH CARE HEED ALL WARNINGS FOLLOW ALL INSTRUCTIONS NEVER EXPOSE THIS EQUIPMENT TO RAIN, MOISTURE, ANY DRIPPING OR SPLASHING LIQUID. AND NEVER PLACE AN OBJECT FILLED WITH LIQUID ON TOP OF THIS DEVICE. DO NOT PLACE THIS UNIT IN AN ENCLOSED ENVIRONMENT SUCH AS A BOOKSHELF OR CLOSET. ENSURE THERE IS ADEQUATE VENTILATION TO COOL THE UNIT. DO NOT BLOCK THE VENTILATION OPENINGS. DO NOT STICK ANY OBJECTS THROUGH THE VENTILATION OPENINGS. DO NOT INSTALL THIS UNIT NEAR ANY HEAT SOURCES SUCH AS RADIATORS OR OTHER APPARATUS THAT PRODUCE HEAT DO NOT PLACE THIS UNIT IN ENVIRONMENTS WHICH CONTAIN HIGH LEVELS OF DUST, HEAT, MOISTURE OR VIBRATION THIS UNIT IS DEVELOPED FOR INDOOR USE ONLY. DO NOT USE IT OUTDOORS PLACE THE UNIT ON A STABLE BASE OR MOUNT IT IN A STABLE RACK ONLY USE ATTACHMENTS & ACCESSORIES SPECIFIED BY THE MANUFACTURER UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME ONLY CONNECT THIS UNIT TO A MAINS SOCKET OUTLET WITH PROTECTIVE EARTHING CONNECTION CAUTION SERVICING This product contains no user serviceable parts. Refer all servicing to qualified service personnel. Do not perform any servicing (unless you are qualified to) EC DECLARATION OF CONFORMITY This product conforms to all the essential requirements and further relevant specifications described in following directives: 2004/108/EC (EMC) and 2006/95/EC (LW)

****** Page 8 ****** WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE) The WEEE marking indicates that this product should not be disposed with regular houshold waste at the end of its life cycle. This regulation is created to prevent any possible harm to the environment or human health. This product is developed and manufactured with high quality materials and components which can be recycled and/or reused. Please dispose this product at your local collection point or recycling centre for electrical and electronic waste. This will make sure that it will be recycled on an environmentally friendly manner, and will help to protect the environment in which we all live. CAUTION The symbols shown are internationally recognized symbols that warn about potentional hazards of electrical products. The lightning flash with arrowpoint in an equilateral triangle means that the unit contains dangerous voltages. The exclamation point in an equilateral triangle indicates that it is necessary for the user to refer to the users manual. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN These symbols warn that there are no user serviceable parts inside the unit. Do not open the unit. Do not attempt to service the unit yourself. Refer all servicing to qualified personnel. Opening the chassis for any reason will void the manufacturer’s warranty. Do not get the unit wet. If liquid is spilled on the unit, shut it off immediately and take it to a dealer for service. Disconnect the unit during storms to prevent damage. 8

****** Page 9 ****** Chapter 1 Pin connections and connectors CONNECTION STANDARDS The in— and output connections for AUDAC audio equipment are performed corresponding to international wiring standards for professional audio equipment. XLR: For balanced signal input connections 1 2 030 3—Pin Terminal Block: Pin 1: Pin 2: Pin 3: Ground Signal + Signal For balanced signal input & link output connections. Left: Signal — Center: Signal + Right: Ground 1 1 1 (XLR Pin 3) (XLR Pin 2) (XLR Pin l) 1 1 1 Shield Red White 1 1 1 1 3 1 9

****** Page 10 ****** RS232 (serial connection interface): For connection with home automation systems, or other remote control equipment Connection PIN 2 PIN 3 PIN 5 Settings RS232 Standard RS232 SMA/SMQ TX SMA/SMQ RX GND 19200 Baud 8 Bit 1 Stop bit No parity No Handshaking The complete command set to control the SMA/SMQ amplifiers through RS—232 is available in the commands user manual which is freely downloadable on audac.eu 10

****** Page 11 ****** Chapter 2 Front & rear panel Front Panel overview SMA Series o o o o sona Series o o o ooo o o SMA750 AUDAC SMQ750 AUDAC o o o o 0 o O o o o o o o Front panel description The front panel of all SMA/SMQ amplifiers is almost identical, with few minor differences between the different models. The SMA series amplifiers (2—channel versions) only have two output selection buttons, while the SMQ series amplifiers (4—channel versions) have four. Other provided features such as USB port, LCD display and rotary selection dial are identical for all models. USB port A USB port is provided on the left side of the front panel. This is meant for inserting flash drives with configuration files to load into the amplifier or duplicating system configuration files to the inserted medium. The inserted flash drive shall support FAT32 filesystem. Graphical LCD display A clear system overview and intuitive user interface is provided on the 2.5″ graphical LCD display. This true colour display provides a clear overview of the amplifiers operation mode guaranteeing an user friendly experience when browsing through the menu structure. 11

****** Page 12 ****** Rotary selection dial Browsing through the menu structure and adjusting parameters is made easy with the rotary selection dial. This multifunctional rotatable dial allows easy one—hand operation throughout the entire menu structure. Browsing can be done by turning it while actions will be taken when pressing it. Channel selection buttons with indicator LED’s Channel selection and monitoring is made easy through a selection button together with four indicator LED’s for every channel. When pressing the button, the menu structure will call the settings of the corresponding channel, allowing adjustment of the parameters. The LED’s give a continuous indication of the operation of the corresponding channel. The green Signal LED illuminates whenever a signal is present, while the —20dB LED illuminates when the input signal exceeds the — 20 dBu level. The Clip LED illuminates when the corresponding channel is working at maximum level. To ensure the best signal— to—noise ratio, the Clip LED may only illuminate at peak levels. When the Clip LED illuminates, the output limiter of the amplifier will intervene avoiding a distorted “Clipping” sound on the output. The Protection LED will illuminate when overheating occurs, or any other fault is detected. When the protection LED is illuminated, no signal will be available on the outputs. Power switch A power switch allows to switch the amplifier on and off, while the blue indicator LED located next to the button illuminates when the power is switched on. Rear Panel overview SMA Series SMA750 AUDAC -—0UüPUt SMQ Series SMQ750 o o 12 o o o o

****** Page 13 ****** Rear panel description The rear panel of all SMA/SMQ amplifiers is almost identical, with few minor differences between the different models. The SMA series amplifiers (2—channel versions) have two inputs and two outputs, while the SMQ series amplifiers (4—channel versions) have four. Other provided connectivities such as RS—232 and power are identical for all models. AC Power inlet with fuse The mains power supply (230-240 V AC / 50 Hz) has to be applied to this AC power inlet. The connection is made by an IEC power connector and is fitted with a fuse. When replacing the fuse, make sure that the value of the replacement fuse matches the value of the original fuse. (SMA350: T6.3AH/250V SMA500: T8AH/250V SMA750: T12AH/250V SMQ350: T8AH/250V – SMQ500: T12AH/250V – SMQ750: T16AH/250V) Loudspeaker output connections The loudspeaker output connections are implemented in two ways, using speaker output connectors and terminal block output connectors. This way, connections can always be made in the most simple way for every application. A detailled description for connecting loudspeakers in the most appropriate way for each application can be found in the next chapter ‘Connecting the amplifier’. Signal input connections Signal input connectors are implemented in two ways, using balanced XLR and 3—pin terminal block connectors. This way, connections coming from the signal source such as pre—amplifier, mixer or matrix system can always be made in the most easy and appropriate way while allowing signal linkthrough to other amplifiers. RS232 Connection The amplifier can be controlled through external hardware such as home & industrial automation systems by linking it to the RS—232 connection. The pinout and communication settings are described in an earlier chapter of this user manual. The complete RS—232 command instruction set and configuration information can be downloaded from the AUDAC website. Optional expansion port Installation of optional modules is possible with the optional expansion slot. In standard configuration this D—size hole is covered with a blind plate which needs to be removed before installing the module. Information about available modules and how to install them can be found at the AUDAC website. 13

****** Page 14 ****** Chapter 3 Quick start guide Connecting the amplifier ATTENTION Make sure the power of the device is turned OFF before any connections or wiring adjustments are made. Disregarding this rule can lead to permanent damage of the equipment. 1) Connecting audio sources Connect all the audio sources to the input connections on the rear side of the amplifier. Depending of the installation and the used sources (pre—amplifiers, mixers, matrix systems, … ) the appropriate selection of input connectors can be made between XLR and terminal block. 2) Connecting loudspeakers Connect loudspeakers to the outputs of the amplifier. Depending of the application and the connected loudspeakers, the appropriate selection of loudspeaker connections can be made between speaker and terminal block. In most standard applications, loudspeakers will be connected to the +1 / —1 terminals of the speaker connector (or + / — terminals of terminal block connector). Depending if any channels should be connected in bridge, corresponding connections should be made as indicated on the rear panel. 3) Other connections After the in— and output connections are made, other connections such as mains power (and RS—232 if required) can be made. After connecting them, the amplifier is ready to be powered—up and configured. Configuring the amplifier 1) Configuration using presets In case your setup is a pre—defined set solution from AUDAC, a set solution configuration file will be available (*.SOL) whereby all settings for the configuration can be made by uploading the corresponding file to the amplifier. In this case, the file should be stored on an USB storage device and inserted to the USB port on front of the amplifier. After inserted the USB storage device, browse to the ‘Settings’ > ‘General setup’ > ‘USB’ > ‘Load’ and browse to the correct file. After selecting the corresponding file, all settings for the selected set solution will be loaded in one action, and all other configuration steps can be skipped. In case a custom configuration is required, proceed to the next step. 14

****** Page 15 ****** 2) Configuring the outputs The first step when a custom configuration is required is configuring the output channels. In standard configuration, every output channel is functioning independently. In case this configuration is required for your setup, this step can be skipped. When your setup requires one (or more) bridged output channels, channel bridging settings can be made in the ‘Settings’ > ‘Output setup’ > ‘Bridge’ menu. When the bridge function is switched on, two channels will be merged to one output channel doubling the output power. On the main screen, only one fader will be displayed for a bridged channel. 3) Configuring the inputs After the output configuration has been made, the next step is the input configuration. In standard configuration, every output channel is patched with the corresponding input channel (Input 1 to Output 1, .. ). In case this configuration is required for your setup, this step can be skipped. In cases where specific inputs should be assigned to the outputs, the input selection can be made in the settings menu under ‘Settings’ > ‘Input’. Selection is possible between all applied inputs, including summed inputs (Converting stereo inputs to mono). After the inputs are assigned to the outputs, the input gain for every used input should be set. The input gain can be adjusted under ‘Settings’ > ‘General setup’ > ‘Input gain’. On the right side of this screen are three colour indicators shown for every input, giving feedback of the currently set gain. A correct regulation of the input gain is achieved when the green indicator is frequently blinking, the yellow indicator is only illuminated at the peaks (—6 dB) and the red indicator blinks rarely or not. When the red indicator blinks frequently, the input is overdriven and the gain needs to be reduced. When the green indicator blinks rarely or not, no input signal is detected and the gain needs to be increased. 3) Acoustics configuration After the in and output configurations have been made, the next step is making acoustic configurations and optimalizations. When bass cabinets are used in the installation, it might be required to add low—pass filters to the bass cabinets channel, and high—pass filters to the mid/high loudspeakers channels. Filter configurations can be made in the ‘Setup’ > ‘Output configuration’ > ‘Filters’ menu. Sound quality can be optimized to specific acoustics using a 7—band equalizer which can be found in the same menu. Besides, other specific configurations such as limiting can be made in the same menu. Ready After all above connections and configurations have been made, the system is ready for rock & roll. More specific features such as password protection, standby mode, and many more can be configured. How this should be done can be found in further chapters of this instruction manual. 15

****** Page 16 ****** Chapter 4 Connecting the Amplifier NOTE Make sure the power is swiched OFF when any change is made to the connections of the amplifier. Input connections The signal input connections are performed using a balanced XLR and 3—pin terminal block (3.81 mm pitch) connector for every input. Both connectors are linked in parallel, allowing free selection to which connector the signal will be applied. If required, the second connector can be used for linkthrough the applied signal to other amplifiers. The input structure of the amplifier is made flexible due to the input selection matrix, meaning that any signal applied to the amplifier can be patched to any channel. When driving multiple channels by the same signal or summing stereo signals and converted into mono (Eg. when the amplifier is being used in bridged mode), external links are redundant due to the input matrix. Selecting and assigning the input signals to the amplifier channels is made easy through software configurable user interface which is controllable using the front panel controls. 16

****** Page 17 ****** Output connections The loudspeaker output connections are performed using a speaker and 2—pin terminal block (5.08 mm pitch) connector for every output. Both connectors are linked in parallel, allowing free selection and the most suitable connection for every application. OUTPUT The used speaker connectors are 4-pole types, containing the output signal for the corresponding channel on +1/—1 terminals. The speaker connector for the first (and third for SMQ) channel also contains the output signal for the subsequent channel on +2/—2 terminals. This allows to transfer of two amplifier channels over one four-conductor loudspeaker cable which is fitted with one connector. Connection in bridge mode can also be made using one single connector Connection examples Normal operation mode: Bridge: CH 2: acH This is the most common mode whereby every channel is driven with a separate signal and a loudspeaker is connected to each of them. The loudspeakers are connected using a two—core loudspeaker cable (or one four—core loudspeaker cable for two subsequent channels) to the corresponding terminals (+1/—1 for speaker connectors and +/— for terminal block connectors). Channel 2 Channel 1 -17

****** Page 18 ****** Bridged mono mode In bridged mono mode, one single load is connected between two amplifier outputs, merging both of them which results in double output power to one single load. In this configuration, the load is connected using a two—core loudspeaker cable between the + terminals of both channels. When using speaker connectors, connections are made between +1 and +2 terminals of the channel 1 (or channel 3 for SMQ). When using terminal blocks, connections are made between both + terminals. Selection for bridged output channels is made through software configuration by the user interface which is controllable using the front panel controls. Channel 1+2 Bridged Three channel configuration (Only SMQ): In three channel configuration, two outputs are used in normal operation mode and both other outputs are switched in bridged mode while feeding the amplifier with a stereo input signal. This configuration is commonly used when two mid/high frequency loudspeakers are supplemented with an additional (mono) bass cabinet for the low frequencies. The mid/high frequency loudspeakers are connected as described in normal operation mode, while the bass cabinet is connected as described in bridged mono mode. Besides the selection for the bridged amplifier channel, further advanced settings such as filtering is usually configured for this kind of setups. All these settings can be configured by the user interface which is controllable using the front panel controls. Channel 2 Channel 1 Channel 3+4 Bridged 18

****** Page 19 ****** ATTENTION Do not connect any conventional 100 Volt line transformers directly to the loudspeaker outputs, an integrated decoupling network shall be provided when used in combination with line transformers. Wire up the system The wiring of the system must be done according to the following rules, to guarantee a proper functioning of the system in all circumstances. 1. 2. Speaker cable for amplified outputs: Minimum 2 x 1.5 mm? If distance > 15 m: 2 x 25 mm2 Music sources and zone outputs: Must be connected with high—quality audio cable and high—quality connectors 19

****** Page 20 ****** Chapter 5 Configuring the amplifier The configuration of the amplifier can be done using the controls on the front panel of the amplifier. A graphical user interface is indicated on the front panel LCD display which guarantees an intuitive and user friendly experience. The menu structure is shown in below diagram, giving an overview of the configuration possibilities. The following pages give a detailled explanation for every configurable function.

****** Page 21 ****** Main screen The main screen gives a fader overview for the output OUT 1 channels of the amplifier. Depending the channels for the INPUT 1 corresponding model (two for SMA or four for SMQ), the -20dB output level for each channel can be adjusted. On top of the screen, the names of the output channels are shown (OUT 1, OUT 2, . . ). Right under, the name of the inputs (INPUT l, INPUT 2, . . ) linked with these outputs are indicated. And below the input, the level of the output channel is indicated. The selection of the corresponding channel can be made OUT 2 INPUT 2 -20dB OUT 3 INPUT 3 -20dB using the ‘Channel selection buttons’ which are located below the VU meters of every channel on the front panel of the amplifier. The output level for the currently operated channel is indicated in green and can be adjusted by turning the rotary function dial in clockwise (up) and counter—clockwise (down) direction. The fader will slide up or down when the output level is adjusted. The output level can be adjusted within range of 0 dB and —70 dB. On the bottom of the this screen, a mute indicator is shown for every channel. This button will be indicated in green when the channel is playing and turns red when muted. OUT 4 INPUT 4 -20dB -20dB Settings menu By pressing the rotary function dial once (when the main screen is displayed), the output settings menu will be shown. This menu is only accessible in administrator mode (will be described extensively in a later section of this user manual) and allows to make adjustments to the channel setup and general setup. Scrolling through this menu is possible by turning the rotary function dial. The currently selected option will be highlighted and the possibilities will be shown on the right side of the screen. Settings can be called by pressing the rotary function dial. Depending of the selected setting, OUTPUT 1 Level Input Mute Output setup General setup a selection menu will be indicated on the right side of the display, the selected setting will toggle between two possibilities or another selection screen will be indicated. Level The first selection is the adjustment of the output level for the corresponding channel. The output level which can be selected here is identical to the output level which can be adjusted on the main screen of the amplifier as described above. It can be adjusted within a range of 0 dB and —70 dB. After the selection has been made, returning to the settings menu is possible by confirming the selection through pressing the rotary function dial. 21

****** Page 22 ****** Input The input which is linked to every channel can be selected in this screen. Every input signal can be linked to every output channel, using the input selection matrix. Summed inputs for two sequent input channels can be selected too (E.g. Input 1+2). This can be useful when stereo input channels need to be patched to a mono output, or when the amplifier is used in bridge mode. Mute Muting will completely suppress the output signal of the corresponding channel. The mute indicator will be shown in green when the channel is playing and turns red when muted. Toggling between both states can be done by pressing the rotary function dial once. Output setup Output setup will lead you to a separate menu where the advanced configurations for the corresponding output can be made. The output setup menu is separately configurable for each of the outputs and includes configuration settings which generally will be made once for every setup / installation without having them adjusted frequently. To return from the output setup menu back to the main menu, the ‘back’ option at the bottom needs to be pressed. Output setup Filters SETUP OUTPUT 1 Low pass High pass EQ settings Delay Max level Type: OFF Roll-off: 12dB/Oct Freq: 1000Hz BACK Filters are frequently used in audio systems for different purposes. Some typical application examples are filtering noise or other unwanted signals from an audio signal and separating audio signals between different frequency ranges (crossover) when a 2—way (or more) system is used. Because the characteristics of the required filter are strongly dependent of the application, the filter settings are made flexible and user configurable. Filters are grouped in this menu under subdivisions ‘low pass’ and ‘high pass’, indicating which types of filters can be configured. When a ‘Band pass’ filter is desired, this can be achieved by a combination of a low and high pass filter. Characteristics which can be configured for the filters are: Filter Type: Roll-off: Cutoff frequency: Selectable between Butterworth, Bessel, Linkwitz—Riley Selectable between 12 dB/0ct and 24 dB/0ct Infinitely adjustable between 1 Hz and 22 kHz The configuration of the desired filter can be made by selecting the required filter type in the column on the left side (Low pass or High pass). Subsequently the characteristics as described above can be adjusted on the right screen side. The currently selected parameter 22

****** Page 23 ****** will be indicated in green and toggling between the different values is possible by pressing the rotary function dial. If the parameter is set to the desired value, scrolling to the next field can be done by turning the function dial. When adjusting the frequency, a 5 digit number is shown and the adjusting digit can be selected (turns red) and confirmed by turning and pressing the rotary selection dial. Consecutive digits will increase when the maximum value has been reached. After the desired frequency has been selected it can be confirmed by pressing (turns orange) and turning the function dial clockwise to the entire right side where the ‘0K’ word will appear. After pressing again the frequency is confirmed and the next characteristic can be adjusted. If all characteristics are set to the required value, select the ‘BACK’ option and you will be returned to the output setup menu. RECOMMENDATION When separating frequency ranges in two or more way systems, a Linkwitz—Riley filter with 24 dB / Oct roll—off is recommended between different frequency ranges. A high- pass Butterworth filter with 24 dB / Oct roll—off is suggested for elemination of low frequencies outside the frequency range of the loudspeaker, avoiding subsonic overload. Output setup Equalizing A parametric 7 bands equalizer will allow to cut or boost specific frequency ranges, helping to improve the sound and adapt it to acoustics of the location where its being used. A standard configuration with center frequencies for 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.6 kHz, 6.8 kHz and 15 kHz with Q factor of 0.7 is pre—loaded. The center frequency of each band can be infinitely adjusted within a range of 1 Hz and 22 kHz, while the Q—factor can be adjusted within a range of 0.1 and 15 and the level of each band within a range of +15 dB and —15 dB. A fader overview for the 7 bands equalizer will be shown after selecting the ‘EQ settings’ menu item. On top of the screen, the center frequencies for each band are shown with right under the currently selected equalizing level. 6äé 150Hz OdB EQ OUTPUT 1 400Hz 1.0kHz 2.6kHz 68kHz 15.0kHz OdB OdB OdB OdB OdB BACK EQ-frequency EQ a-factor The selection of the corresponding band can be made by turning the rotary selection dial until the corresponding band is indicated in green and pressing it. Level adjustment can be done by turning the selection dial and confirmed by pressing it again. After this confirmation, another band can be selected and adjusted in identical way. Adjustment of the Center frequencies and Q—factors can be done by selecting the corresponding ‘EQ-frequency’ and ‘EQ Q-factor’ buttons on the bottom of the screen. When selected, pop—up windows will appear where the corresponding adjustments for each band can be made. Adjustment of center frequencies can be made in similar way as described with filters above and Q—factors can changed by selecting and turning clockwise (up) or counter—clockwise (down). This confirmation can be done by pressing again. After the required value for each band has been set, returning to the equalizer screen can be done by selecting the ‘BACK’ button. The ‘BACK’ button in the left bottom corner of the equalizer screen can be selected and pressed for returning back to the output setup menu. 23

****** Page 24 ****** Output setup Delay This function enables to create a specific delay between the input and the output signal. This delay can be used for time alignment between different loudspeakers in one configuration. It is configurable in meters within a range of 0 meter and 12 meter with a resolution of 0.1 meter / step. Adjustments can be done by selecting it and turning the rotary selection dial. After the required delay is selected, it can be confirmed by pressing the rotary function dial. Output setup >> Max level This function will guarantee that the output level adjustable by the fader on the main screen (which is accessible through user level access) will never exceed a certain value as configured. This gives protection for non-authorized persons when increasing the volume. It can be adjusted within a range of 0 dB (no restrictions) and —70 dB. The screen shows a fader with the configured maximum output level indicated above it. When selected, the fader including the currently configured maximum output level will turn green and the level is adjustable by turning the rotary function dial. The fader will slide up or down and after the desired value has been selected, it can be confirmed by pressing the rotary function dial. Output setup >> Standby When no signal is detected for a corresponding channel, it will be switched automatically to standby mode. The delay time between the absence of a signal and switching to standby mode can be selected in this screen. It can be disabled (never) or adjusted within a range of 1 to 10 minutes. The power consumption will decrease when one or more channels are switched to standby. Output setup >> Limiter The output level for each channel can be limited to a certain power. This is very useful when the output power of the amplifier is greater than the maximum power handling of the connected loudspeaker. Independently of a rising level of the applied input signal, the output power will be always limited to the set value. This way, loudspeaker damage due to power overload can be avoided when this setting is made correctly. The maximum output level is indicated in Watt and is adjustable in steps of 25 Watt (with an 8 Ohm load) to SETUP OUTPUT 1 EQ settings Delay Max Level Standby Limiter 500 Watt at 40 250 Watt at 80 the maximum output power of the amplifier. Adjustment of the maximum output power can be made by turning the rotary function dial. 24

****** Page 25 ****** Output setup Dynamic bass Dynamic bass will make a correction depending of the level (volume) in the low frequencies. This correction will make that music will sound warm and detailed (with true reproduction of low frequencies) at low volumes, but with increasing level (volume) the low frequencies will be weakened. This will result in less distortion due to reduced low frequencies at high volumes, allowing the loudspeaker to handle higher sound pressure levels with less distortion. It can be switched ON and OFF, whereby OFF means that dynamic bass is disabled and ON means that a level dependent correction in the low frequencies is made. Output setup >> Bridge Pairs of two subsequent channels can be bridged with merged power of both channels obtaining one single channel with double output power. The bridged pairs should always be subsequent channels (OUT 1+0UT2 & OUT3+0UT4 for SMQ). When bridging two channels, only one fader for the bridged channel will be shown in the main screen. Bridging can be switched ON and OFF, whereby OFF means that all channels are functioning completely separately and ON means that two channels are bridged. OUT 1 INPUT 1 -20dB OUT 2 Bridged OUT 3 INPUT 3 -20dB For SMQ Amplifiers (four channels), three channel configurations can be made whereby two channels are functioning separately and two channels are bridged. These configurations are typical for applications where stereo top speakers are used in combination with a single bass cabinet. Output setup Clear presets Loudspeaker and total system (set) configurations can be uploaded to the amplifier. Every preset is made and optimized for one specific loudspeaker or system. This window will indicate if any preset is currently loaded. Presets which are meant for others than the connected loudspeakers may affect the performance and sound quality in negative way, while not providing optimal protection. Clearing of the currently loaded presets can be done by selecting this option and pressing clear. Please note that other configurations for the corresponding channel (Eg. filters, equalizing, … ) which are separately made from the preset will remain unchanged. When a total system configuration (set solution *.SOL) is currently loaded and cleared, other channel configurations which are part of this preset will be cleared too. OUT 4 Bridged 25

****** Page 26 ****** General setup The general setup will lead you to a separate menu where some global configuration settings for the amplifier can be made. Some settings which are accommodated under general setup are password settings, … To return from the output setup menu back to the main menu, the ‘back’ option at the bottom needs to be pressed. GENERAL SETUP Admin pass User pass LCD Usb Input 1: 18.75dB Input 2: 25.50dB Input 3: 5.25dB Input4: 30.75dB BACK General setup Input gain The gain for each individual input can be set in this screen between a range of —16.5 dB and +30.75 dB. After scrolling and selecting the right input, gain can be adjusted through turning the rotary selection dial. Level indicators are shown on the right side of the display indicating the correct set gain level. Three colour digits (green, yellow and red) will illuminate at different levels and give feedback about the currently set gain. A correct regulation of the input gain is achieved when the green indicator is frequently blinking, the yellow indicator is only illuminated at the peaks (—6 dB) and the red indicator blinks rarely or not. When the red indicator blinks frequently, the input is overdriven and the gain needs to be reduced. When the green indicator blinks rarely or not, no input signal is detected and the gain needs to be increased. General setup >> Password Password protection is provided in two different levels, administrator and user level. Administrator level has full access to all available functions of the amplifier while user level only can access the volume of the amplifien Both passwords consist of a 4 digit code which is intended to be different. In standard configuration, both passwords are set to ‘0000’. In this case, full access is given without requiring any password. If either the configured user or administrator password is different from ‘0000’, a password will be requested before access to the relevant functions is provided. The configuration of the selected password can be made by selecting Admin pass or User pass in the column on the left side. The currently selected password will be shown and the adjusting digit can be selected (turns red) and confirmed by turning and pressing the rotary selection dial. Consecutive digits will increase when the maximum value has been reached. After the desired password has been selected it can be confirmed by pressing (turns red) and turning the function dial clockwise to the entire right side where the ‘0K’ word will appear. After pressing again the password is confirmed.

****** Page 27 ****** General setup LCD Adjustment for the LCD settings can be made in this screen. The brightness of the LCD can be adjusted within a range of 10% to 100% (standard is 80%). Adjusting of the LCD brightness can be convenient when the device is placed in an environment with very low or very high ambient light. Hereby the clarity of the LCD can be adjusted in such way being clearly but unobtrusive. The backlight off time can be adjusted within a period of 10 up to 120 minutes or never (always on), making the backlight of the LCD automatically turn off after the set time. General setup USB USB will lead you to a separate sub—menu where all settings and options using USB functions can be found. An USB flash disk should be inserted to the USB slot on the front of the amplifier and shall be formatted using FAT32 filesystem. General setup USB Save The complete configuration of the amplifier can be saved to a file by using the ‘save’ button. This way, a complete backup for system recovery can be made. This provides a great advantage for re—loading a previous configuration and duplicating the configuration to other amplifiers. The system backup will always be saved as .. .AUDACSETTINGSSETTINGS.SET General setup >> USB >> Load Different types of configuration files can be loaded into the amplifier, such as loudspeaker presets (*.SPF), complete set solution configurations (*.SOL) and system backups (*.SET). Each of above configuration files have their own filetype and will be loaded in a different way. When pressing the load button, a window will appear whereby browsing through the files on the inserted medium is made possible. Browsing through folders is possible through turning the rotary dial, lower folders can be easily accessed by selecting them while both top options allow to browse up or to the root of the inserted USB Save settings to USB drive Load Admin key User key Back medium. After the desired file has been found, it can be loaded by selecting it. Speaker presets are files in *.SPF format which are prepared and provided by AUDAC and containing all parameters for optimal performance and protection for the corresponding loudspeaker. When a *.SPF file is loaded, the amplifier will recognize their filetype and show a popup window wherein all channels can be selected on which this file should be applied (whereon the corresponding loudspeaker is connected). After the selected channels are selected, the ‘load settings’ button shall be pressed and the presets will be loaded to the selected channels. Complete system configurations (set solutions) are files in *.SOL format which are prepared and provided by AUDAC. These files contain parameters for a complete configuration consisting of multiple (with different types) loudspeakers, such as a combination of loudspeaker cabinets with a bass cabinet, . . These configuration files contain besides the protection 27

****** Page 28 ****** and performance parameters also information about connected channels, bridging, filtering, etc. Additional comments about system configurations are shown on the right side of the browse window. When a *.SOL file is selected, it will be immediately loaded without requiring selection of the channels where it should apply to. System backups are files in (*.SET) format which can be created by the customer themselves. When a system backup is made using the ‘save’ action as shown above, it will be saved as a (*.SET) file which can be re—loaded in similar way as a *.SOL file. It will be immediately loaded without requiring channel selection where it should apply to. General setup USB Key An USB key with both administrator and user level access can be created when selecting the corresponding buttons. A file containing the configured password information will be stored to the inserted medium, providing instant access to the functions when the medium is inserted. This will allow instant and easy access in any circumstance and will also eliminate the possibility that someone’s peeking the password. General setup >> Info The info screen gives an overview of the amplifier model and the software version which it is currently running. General setup >> Temperature The temperature screen indicates the current operating temperature for each individual amplifier channel. General setup Factory reset Factory reset will recall all settings to factory defaults and all previously made settings and configurations will be lost. After pressing the factory reset button, a confirmation will be asked if all settings definitely need to be reset to factory defaults. When confirmed, all settings will be lost. Save All currently set values for output levels, selected inputs and channel muting will be saved when selected. After power down and restart the amplifier, these saved values will be automatically reloaded. Other configuration settings (except output levels, inputs and muting) are automatically saved when modified, whereby they will be automatically recalled after power down and restart. Lock When selected, the amplifier will be locked and a password (when configured) will be required before any access is given to the user interface of the amplifier. 28

****** Page 29 ****** Chapter 6 Additional information Technical specifications RMS Output Power (1 kHz, THD Frequency response Signal to Noise Ratio SMA350 SMA500 SMA750 SMQ350 SMQ500 SMA750 4 Ohm Stereo 8 Ohm Stereo 8 Ohm Bridge 4 Ohm Stereo 8 Ohm Stereo 8 Ohm Bridge 4 Ohm Stereo 8 Ohm Stereo 8 Ohm Bridge 4 Ohm Stereo 8 Ohm Stereo 8 Ohm Bridge 4 Ohm Stereo 8 Ohm Stereo 8 Ohm Bridge 4 Ohm Stereo 8 Ohm Stereo 8 Ohm Bridge Total Harmonic Distortion + Noise Common Mode Rejection Crosstalk Inputs Output Controls Type Connectors Impedance Sensitivity Type Connectors 2 x 350 Watt 2 x 220 Watt 700 Watt 2 x 500 Watt 2 x 300 Watt Watt 2 x 750 Watt 2 x 380 Watt 1500 Watt 4 x 350 Watt 4 x 220 Watt 2 x 700 Watt 4 x 500 Watt 4 x 300 Watt 2 x 1000 Watt 4 x 750 Watt 4 x 380 Watt 2 x 1500 Watt 20 Hz 20 kHz > 95 dB 70 dB Balanced Line Female XLR Input 3—pin Terminal block 3.81 mm 10 k Ohm balanced -30 dB +5 dB Loudspeaker Output Speaker 2—pin Terminal Block 5.08 mm DSP configuration through front panel RS-232 29

****** Page 30 ****** Indicators Protection Cooling system Amplifier technology Power supply Power consumption 30 Type Range Standby Idle SMA350/500/750 SMQ350/500/750 1/8 Rated Power 1/3 Rated Power SMA350 SMA500 SMA750 SMQ350 SMQ500 SMQ750 SMA350 SMA500 SMA750 SMQ350 SMQ500 SMQ750 SMA350 SMA500 SMA750 SMQ350 SMQ500 SMQ750 Power Protect Peak -20 dB Signal DC—Short Circuit Over Heating Over Load Limiter Temperature controlled fan Class-D Switching mode 230-240 V AC / 50 Hz 25 Watt 35 Watt 37 Watt 38 Watt 40 Watt 56 Watt 57 Watt 60 Watt 145 Watt 182 Watt 262 Watt 272 Watt 345 Watt 503 Watt 305 Watt 416 Watt 624 Watt 592 Watt 813 Watt 1227 Watt

****** Page 31 ****** Notes

****** Page 32 ****** Notes


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