API 2500 - 5.0 Tone Section; 5.1.1 Knee Settings

50
th
Anniversary 2500 Bus Compressor API
13
5.0 Tone Section
The TONE section of the 50
th
Anniversary 2500 controls the shape of the response curve at the onset
of compression (KNEE), inserts the patented THRUST
®
filter before the detector, and set the detector
path routing (TYPE). These controls all influence the tonal characteristics the compression applies to
the audio.
5.1 Tone Section Controls
5.1.1 KNEE
The KNEE function determines the shape of the 50
th
Anniversary 2500’s response curve when the
input audio crosses the THRESHOLD.
The 50
th
Anniversary 2500 has three (3) KNEE settings that control how
the compressor transitions into compression:
• HARD: Sharp response curve
o Red LED
• MED (Medium): Slightly rounded response curve
o Yellow LED
• SOFT: Rounded response curve
o Green LED