1.3 Concepts and TerminologyThere are 3 main parameters that set the API 2500 from other compressors: Thrust, CompressionType, and its adjustable Knee. When used in conjunction with one another, these parameters give theAPI 2500 unprecedented flexibility.KneeSets the knee, the manner in which the compressor begins to reduce the gain of the signal.• In the Hard position, gain reduction begins immediately at the set ratio.• In the Med position, there is a slight fade-in to the set ratio.• In the Soft position, there is an even more gradual fade-in to the set ratio.Waves API 2500 User Manual- 5 -