background image

 

 3 

Introduction 

This section briefly describes the possibilities of  the SX408A active subwoofer system. 

he SX408A is an active powerful tandem ported 150W subwoofer with a special 
constructed 8" driver that is capable of producing an incredibly powerful and clear 
bass sound. It’s frequency response is as low as 37 Hz at -10 dB, and the frequency 
characteristic is very flat from 37 Hz to 120 Hz. This way, the sound coming from  

 this piece of equipment is absolutely magnificent. 

 

It contains an integrated class H amplifier, which ensures a high efficiency level with very low 
distortion. This amplifier delivers an output power of 100 Watt to the subwoofer. Besides 
this, it also contains an active crossover network with a frequency of 120 Hz, and two output 
channels for powering satellite loudspeakers. 
 

The two amplified satellite outputs deliver a maximum power of 2 x 100 Watt at 8 Ohm or 2 
x 160 Watt at 4 Ohm. The minimum load is 4 Ohm. 
 
For protection reasons, a built-in limiter is provided to limit the input signal when necessary. 
This limiter consists of three separate stages, one for every channel. This ensures the best 

sound quality with the least distortion for optimal performance. Power, Signal and Clip 
LED’s monitor the proper working of the integrated amplifier. 
 
Besides the high efficiency of the class H amplifier, the SX408A also contains an automatic 
power on/off circuit to ensure the highest energy-efficiency. The volume of the Sub and 
satellite channels is individually controllable at the back of the subwoofer with two 

potentiometers, and the general volume can be controlled by an external volume control or 
wall panel, by connecting it to the built-in RJ45 connector. 
 
This all makes the SX408A a simple but complete solution for a wide variation of fixed audio 
installations. The balanced input connections are just as the satellite speaker output 

connections made with euro block terminal connectors. There is the possibility to connect 
two satellite speakers with an impedance of 8 Ohm on each channel. 

Содержание SX408A

Страница 1: ...PROFESSIONAL AUDIO EQUIPMENT SX408A Active Subwoofer System User Manual InstallationGuide SX408A AUDAC ...

Страница 2: ...A U D A C P R O F E S S I O N A L A U D I O E Q U I P M E N T User Manual Installation Guide AUDAC http www audac eu info audac eu ...

Страница 3: ...ER INDICATOR LED S 7 RJ45 REMOTE CONTROL CONNECTION 7 SATELLITE VOLUME CONTROL 8 SUBWOOFER VOLUME CONTROL 8 BALANCED INPUT CONNECTIONS 8 SATELLITE OUTPUT CONNECTIONS 9 POWER SWITCH 10 MAINS POWER CONNECTION 10 BLOCK DIAGRAM 11 SX408A SET SOLUTIONS 12 FESTA 400 12 CONGRESS 400 13 ADDITIONAL INFORMATION 14 PERSONAL NOTES 15 Index ...

Страница 4: ...he minimum load is 4 Ohm For protection reasons a built in limiter is provided to limit the input signal when necessary This limiter consists of three separate stages one for every channel This ensures the best sound quality with the least distortion for optimal performance Power Signal and Clip LED s monitor the proper working of the integrated amplifier Besides the high efficiency of the class H...

Страница 5: ...nit Do not place the unit in environments which contain high levels of dust heat moisture or vibration Do not use the unit near water or other liquids Make sure no water or other liquids can be spilled dripped or splashed on the unit This unit was developed for indoor use only Do not use it outdoors Do not place objects on top of the unit Chapter 1 ...

Страница 6: ...rated by children Do not stick objects through the openings Do not open the unit risk for electrical shock CAUTION SERVICING This unit contains no user serviceable parts Refer all servicing to qualified service personnel Do not perform any servicing unless you are qualified to do so Note This product conforms to the following European Standards EN 50081 1 1992 EN 50082 1 1992 EN 60065 19 ...

Страница 7: ...ter 2 2 RJ45 Remote control connection 1 Amplifier indicator LED s 3 Satellite outputs volume control 4 Subwoofer volume control 5 Balanced input connections 6 Satellite output connections 7 POWER switch 8 MAINS power connection ...

Страница 8: ... This means that there is no input signal present The amplifier will switch automatically ON when an input signal is applied Signal LED This LED illuminates whenever there is a signal present at the input connectors Clip LED The SX408A has a built in limiter that prevents the outputs from overdriving When the Clip LED lights up frequently the level must be reduced because the maximum power is reac...

Страница 9: ...h and low tones by using the Satellite and Subwoofer volume controls The perfect balance will depend on the application and on the location For vocal applications there will be a different ideal balance than for music applications 5 Balanced input connections These euro terminal input connections accept a balanced line level input signal An input signal can be fed from a mixing console or other si...

Страница 10: ...o terminal output connections is the amplified output signal present with a frequency above 120Hz Connect these to the satellite speakers A total of 4 speakers with an impedance of 8 Ohm can be connected to these output connections The total impedance load should not be lower than 4 Ohms ...

Страница 11: ...ier The input connection is performed using IEC power connectors The SX408A is factory default set to be used on 220 240 Volt AC mains networks But it can be switched to be used on 110 120 Volt AC mains networks To change the SX408A to be used on 110 120 Volt you have take out the fuse compartment and turn it over To make sure it is set to the right mains voltage check if the two arrows on the fus...

Страница 12: ...11 Block Diagram Chapter 3 ...

Страница 13: ...4 x WX502 SX408A Make sure that the WX502 loudspeakers which will be used in combination with the SX408A are set to 8 Ohm impedance This can be done by turning the power tap adjustment screw on the rear of the speaker to 8 Ohm Chapter 4 ...

Страница 14: ...turned over To reach the internal switches the plate with the two power tap selectors should be removed This can be done by loosening the 6 Phillips screws whereby it is attached Once these screws are loose the plate can be carefully removed out of the speaker Be careful with the wiring inside the speaker Then you will see that there are two switches provided at the side of this plate These switch...

Страница 15: ...ntial Sensitivity 400 mV clip led on 570 mV max output signal Max input level 1V limited by limiter Rated power Sub 100W 8 Ohm 50Hz THD 0 2 80W Top 160W 4 Ohm 1kHz 100W 8 Ohm 1kHz THD 0 2 160W Line power Standby 8W 10VA No music 18W 21VA Music 400W 530VA Full Power sine wave load Top 4 Ohm Sub 8 Ohm 60Hz 240W 320VA 1Khz 600W 740VA Signal Noise ratio Sub 100 dB Top 100 dB ...

Страница 16: ...15 Personal notes ...

Отзывы: