Thermionic Culture THE PHOENIX Mastering Plus User Manual
Page 7

©Thermionic Culture Ltd, August 2011
6
3
Controls & operation
3.1
Output Trim Control
This control is used to trim the output levels when 
compressing a stereo mix. Its function occurs after the 
electronics and therefore reduces the maximum output 
level (MOL) and noise. 
The Master Phoenix is calibrated for line level 
(+4dBu), so that input and output are identical when 
not compressing. 
 
The gain is calibrated to feed into 10kΩ. If it is feeding 
a lower impedance, the Output Trim may need to be 
adjusted to a higher level for equal in/out. 
 
3.2 Gain
Control
Factory set for 0dB gain when Output Trim is also 0dB 
(see above). This will need to be set to a higher level 
as compression kicks in. 
 
3.3 Attack
Control
The attack control varies the rate at which the 
compressor starts to react. Attack rates of 4ms at 
position 1 to 120ms at position 6 are available. Usually 
set at 1 (fastest), 2 or 3. 
 
Slow attack rates make the compressor less efficient, 
but can be effective for percussive tracks. 
