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4.0    INSTALLATION  

 

 

 

4.1 

INSPECTION AND UNPACKING

 

 

The  G400  has  been  carefully  packed  at  our  factory  in  a  carton  designed  to 

withstand  handling  in  transit.  Should  the  unit  appear  to  have  been  damaged  in 

transit, notify your dealer immediately and do not discard any of the packing. The 

carton should contain - 

 

  The G400 

  Power cord - country specific, please check 

  Operator Manual (this book) 

 

 

 

4.2 

OPERATING ENVIRONMENT

 

 

The G400 is designed to operate between 0°C and 40°C (32-112°F) with relative 

humidity no more than 80%. Should the units be installed in an equipment rack, 

ensure that the ambient temperature conforms to these levels. 

 

 

 

4.3 

CE STANDARDS AND THE LOW VOLTAGE DIRECTIVE (LVD) 

 

 

The  G400  has  been  designed  to  comply  with  the  latest  Electromagnetic 

Compatibility (EMC) regulations. However we recommend you do not operate the 

unit  close  to  strong  emitters  of  electromagnetic  radiation  such  as  power 

transformers, motors, mobile telephones or radio transmitters. 

 

The unit should only be connected to a power supply of the type described in 4.4 

POWER  REQUIREMENTS  or  as  marked  on  the  unit.  Disconnect  the  mains 

supply before removing any cover. 

 

 

 

4.4 

POWER REQUIREMENTS

 

 

The G400 is factory configured for either 230V 50Hz ac or 115V 60Hz ac mains 

operation.  Please  refer  to  the  following  diagram  which  shows  the  transformer 

connections for 230V and 115V – 

 

 

 

 

 

 

 

The rating of the rear panel fuse is shown on the cover - 

 

 

230V

   

115V

 

 T125mA 

T250mA 

All are slow blow type

 

Summary of Contents for G400

Page 1: ...4 Channel Frequency Conscious Noise Gate Operation Manual June 2005 ...

Page 2: ...Page 2 This page has been left intentionally blank for your notes ...

Page 3: ...Attack switch 2 9 Range switch 2 10 Release control 2 11 Link switch 3 0 EXTERNAL CONNECTIONS 8 9 3 1 Side Chain insert 3 2 Input 3 3 Output 3 4 Level switch 3 5 Power switch 3 6 Power inlet 4 0 INSTALLATION 10 11 4 1 Inspection and unpacking Phantom 4 2 Operating Environment 48V indicator 4 3 CE Standard and LVD Pad 4 4 Power Requirement Listen 5 0 WARRANTY 12 6 0 TECHNICAL SPECIFICATION 13 7 0 D...

Page 4: ...ully variable controls for filter Frequency Threshold and Release Range is switchable to provide either full muting 80dBu or a more subtle level of signal attenuation 20dBu Two Attack modes are available Fast or Slow and Release is manually adjustable In built sidechain auto level sensing and Hold circuitry ensure that false triggering and chatter are kept to a minimum High and Low pass filters ar...

Page 5: ...in signal path Side chain signals at frequencies below the cut off frequency are attenuated and so will not operate the gate Use this control to prevent low frequency signals such as a miked up bass drum opening the gate 2 4 LO PASS control This control sets the cut off frequency of the low pass filter in the side chain signal path Side chain signals at frequencies above the cut off frequency are ...

Page 6: ...s These two leds indicate the relationship between the side chain signal which is normally the same as the input signal unless the side chain insert is used and the THRESHOLD setting The BELOW led indicates that the signal level is below threshold and the gate is closed In practise when the BELOW led lights the audio starts to fade at a rate set by the RELEASE control The ABOVE led indicates that ...

Page 7: ... set by the THRESHOLD control Control range is 10mS to 4S Please note With instruments such as bass guitars short RELEASE times can cause the gate to chatter If this occurs increase the release time 2 11 LINK switch Pressing the LINK switch couples channels 1 2 and 3 4 for stereo operation Channels 1 and 3 become the masters the controls on channels 2 and 4 are disabled The side chain circuitry on...

Page 8: ...3 2 INPUT Electronically balanced Input with pin 2 wired hot signal Unbalanced operation is possible by joining pin 3 to pin 1 signal ground and using pin 2 as signal hot Please note To maintain correct signal levels in un balanced applications pin 3 must be joined to pin 1 and not left un connected 3 3 OUTPUT Electronically balanced Output with pin 2 wired hot signal For un balanced operation pin...

Page 9: ...ER INLET Standard IEC mains inlet for use with a detachable mains cable See Section 3 4 for details of power requirements and fusing Please note The mains protection fuse is inside the unit accessed by removing the top cover Ensure that the unit is disconnected from the mains supply before attempting to replace the fuse ...

Page 10: ...vels 4 3 CE STANDARDS AND THE LOW VOLTAGE DIRECTIVE LVD The G400 has been designed to comply with the latest Electromagnetic Compatibility EMC regulations However we recommend you do not operate the unit close to strong emitters of electromagnetic radiation such as power transformers motors mobile telephones or radio transmitters The unit should only be connected to a power supply of the type desc...

Page 11: ...nd may constitute a fire hazard The detachable IEC mains lead connections to the appliance are coloured in accordance with the following code Green and Yellow Earth Blue Neutral Brown Live WARNING THIS APPLIANCE MUST BE EARTHED Please note A protective earth connection made by way of the earth conductor in the power cord is essential for safe operation ...

Page 12: ...cessary to return the unit to an LA Audio authorised service centre or to the factory with a dated receipt as proof of purchase After repair the unit will be returned to you free of charge Limitations This warranty does not cover damage resulting from accident or misuse The warranty is void unless repairs are carried out by an authorised service centre The warranty is void if the unit has been mod...

Page 13: ...z 22kHz Threshold 50dB to 20dB Range 80dB or 20dB Attack Fast 50uS Slow 1mS Release 10ms to 4s variable High Pass Filter 22Hz to 3kHz Low Pass Filter 250Hz to 30kHz Power Requirement 15VA 115 230V AC 50 60Hz PHYSICAL Input Connectors XLR 3 pin Pin 2 hot Output Connectors XLR 3 pin Pin 2 hot Power Connection IEC 3 pin socket Detachable lead Dimensions mm 482 19 W 164 6 5 D 44 1 75 H Weight 2 9 kg 6...

Page 14: ...ge 14 7 0 DIMENSIONS In keeping with our policy of continuous improvement LA Audio reserves the right to alter specifications without prior notice Manufactured in the UK by LA Audio Web www laaudio co uk ...

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