SM Pro Audio V-Machines User Manual
Page 26

V-‐Machine Operating Manual
Page 26 of 88
SM Pro Audio
3.2.6 Audio Input
One 3.5mm stereo (-‐10dBV) mini-‐jack audio input is provided on the rear panel. It provides a
16-‐bit, 44.1kHz stereo digital signal, which can be processed by plugin effects.
The input level gain can be adjusted in the Global System Settings (see section 3.7.1). Note that
this	
  setting	
  boosts	
  or	
  cuts	
  the	
  amplitude	
  of	
  the	
  audio	
  signal	
  after	
  it	
  has	
  been	
  digitized	
  by	
  the	
  V-‐
Machine’s	
  analog-‐to-‐digital	
  converter.	
  The	
  input	
  gain	
  is	
  not	
  an	
  analog	
  pad,	
  so	
  if	
  you’re	
  
experiencing	
  digital	
  clipping	
  at	
  the	
  input	
  of	
  the	
  V-‐Machine,	
  you’ll	
  need	
  to	
  attenuate	
  (reduce	
  the	
  
level of) the signal at an earlier stage, before it reaches the V-‐Machine.
Quick Tips:
1. If you’re planning to connect a mono input source for processing, it is a good idea to
activate	
  only	
  the	
  left	
  input	
  channel	
  in	
  your	
  Preset	
  configuration.	
  (This	
  corresponds	
  to	
  
the	
  signal	
  at	
  the	
  tip	
  of	
  a	
  tip-‐ring-‐sleeve	
  plug.)	
  This	
  ensures	
  the	
  processor	
  is	
  not	
  using	
  up	
  
CPU	
  cycles	
  processing	
  non-‐existent	
  data.	
  
2. A meter showing the level of the audio input signal can be seen on the right side of the
LCD during operation.
3.2.7 Audio Outputs
Two 6.5mm (1/4") TS analog (-‐10dBV) output connectors are provided on the rear panel.
These	
  connectors	
  deliver	
  the	
  V-‐Machine’s	
  stereo	
  analog	
  audio	
  signal.	
  Before	
  being	
  converted	
  to	
  
analog,	
  this	
  signal	
  is	
  at	
  16-‐bit,	
  44.1kHz.	
  The	
  left	
  and	
  right	
  outputs	
  are	
  marked	
  for	
  identification.	
  
When	
  the	
  mono	
  output	
  option	
  is	
  activated	
  in	
  the	
  Global	
  System	
  Settings,	
  all	
  audio	
  output	
  
signals	
  are	
  summed	
  to	
  both	
  the	
  left	
  and	
  right	
  outputs.	
  
The level of the audio output signal is displayed by a meter on the right side of the LCD.
3.2.8 Headphone Amplifier Output
The V-‐Machine includes a quality headphone amplifier for monitoring the stereo audio output
signal.	
  A	
  standard	
  3.5mm	
  TRS	
  stereo	
  output	
  connector	
  is	
  provided	
  on	
  the	
  rear	
  panel	
  for	
  
connecting	
  a	
  pair	
  of	
  headphones.	
  
The	
  headphone	
  output	
  is	
  designed	
  only	
  to	
  drive	
  headphones.	
  	
  Never	
  connect	
  the	
  headphone	
  
output	
  to	
  other	
  peripherals	
  such	
  as	
  a	
  mixing	
  desk,	
  as	
  damage	
  may	
  result	
  to	
  the	
  peripheral	
  or	
  V-‐
Machine.
3.2.9 Headphone Rotary Volume Control
The volume of the V-‐Machine’s built-‐in headphone amplifier can be adjusted by rotating the
volume	
  knob	
  to	
  your	
  preferred	
  monitoring	
  level.	
  The	
  headphone	
  volume	
  is	
  at	
  maximum	
  when	
  
the	
  knob	
  is	
  turned	
  fully	
  clockwise	
  (with	
  reference	
  to	
  a	
  person	
  facing	
  the	
  rear	
  panel).	
  
Always	
  turn	
  down	
  the	
  headphone	
  amplifier	
  volume	
  before	
  connecting	
  and	
  listening	
  to	
  the	
  V-‐
Machine	
  via	
  headphones.	
  Start	
  with	
  the	
  volume	
  control	
  at	
  minimum,	
  and	
  gradually	
  increase	
  
the level to an acceptable level. Protect your precious ears at all times!
