TL Audio A3 - Manual (Page 2)

1
CONTENTS
INTRODUCTION ......................................................................................................................................... 3
W HY C LASS -A?............................................................................................................................................ 4
W HY T UBES ?................................................................................................................................................ 4
W HY B ALANCED I/O?.................................................................................................................................. 5
BLOCK DIAGRAM...................................................................................................................................... 6
PRECAUTIONS ............................................................................................................................................ 7
INSTALLATION........................................................................................................................................... 8
AC Mains Supply. .................................................................................................................................... 8
Mic Input.................................................................................................................................................. 8
Line Input. ................................................................................................................................................ 9
Instrument Inputs..................................................................................................................................... 9
Insertion Point. ........................................................................................................................................ 9
Output..................................................................................................................................................... 10
Ventilation.............................................................................................................................................. 10
OPERATION ............................................................................................................................................... 11
Input Stage. ............................................................................................................................................ 11
Microphone Input. ................................................................................................................................. 11
Line Input. .............................................................................................................................................. 11
Instrument Input. ................................................................................................................................... 11
30dB Pad................................................................................................................................................ 12
90Hz Filter............................................................................................................................................. 12
Phantom Power. .................................................................................................................................... 12
Tube Stage Drive and Peak LEDs........................................................................................................ 12
W HAT IS C OMPRESSION ? ........................................................................................................................... 12
Overview of Compressor Operation. ................................................................................................... 13
Threshold. .............................................................................................................................................. 13
Attack and Release. ............................................................................................................................... 14
Gain Make Up. ...................................................................................................................................... 15
Compressor On...................................................................................................................................... 15
Equalisation. .......................................................................................................................................... 15
LF Band.................................................................................................................................................. 16
Mid Band................................................................................................................................................ 16
HF Band................................................................................................................................................. 16
EQ On..................................................................................................................................................... 16
EQ Pre.................................................................................................................................................... 16
Output Gain. .......................................................................................................................................... 16
Digital Output........................................................................................................................................ 17
Output Peak LED. ................................................................................................................................. 17
GETTING STARTED ................................................................................................................................ 18
C ONNECTIONS . ........................................................................................................................................... 18
I N U SE ......................................................................................................................................................... 19
SPECIFICATION ....................................................................................................................................... 21
Mic Input:............................................................................................................................................... 21
Line Input:.............................................................................................................................................. 21
Instrument Input: ................................................................................................................................... 21
High Pass Filter: ................................................................................................................................... 21
Insertion Point:...................................................................................................................................... 22
Output: ................................................................................................................................................... 22
Tube Stage: ............................................................................................................................................ 22
Compressor: .......................................................................................................................................... 22
Equaliser:............................................................................................................................................... 22