User manual

T25 Tube Compressor API Select
6
4.0 Compressor Controls
Each channel of the T25 is equipped with a comprehensive set of compression parameters.
4.1 Attack Time
ATTACK: Sets the time it takes the compressor to react when levels exceed the
set THRESHOLD
• 20µS to .8mS range
• 11-step switch
4.2 Release Time
RELEASE: Sets the time it takes the compressor to recover to unity gain after
levels fall below the set THRESHOLD
• 50mS to 1.2S range
• 11-step switch
4.3 Ratio
RATIO: Simultaneously sets the compression ratio (input vs. output) and adjusts
the threshold level for optimal settings
• Four fixed ratios: 2:1, 4:1, 8:1, and 20:1
• 4-step switch
• Compression with high ratios is generally considered to be
limiting
4.4 Input Level – Threshold
IN THRESH (Input/Threshold): Sets the input level/threshold
• Determines the level at which compression begins
• -∞dBu to +20dBu range
• 31-step detented control
4.5 Output Level – Make-up Gain
OUT MAKE-UP (Output Level- Make-up Gain): Sets the output level/make-up gain
• Post gain-reduction and pre tube output stage
• -∞dBu to +20dBu range
• 31-step detented control