Appendix A – 550A Controls
Control Range Default
Low Band Gain
-12dB to 12dB (2-3dB’s steps) 0dB
Low Band Frequency
50Hz,100Hz,200Hz,300Hz,400Hz 50Hz
Mid Band Gain
-12dB to 12dB(2-3dB’s steps) 0dB
Mid Band Frequency
.4kHz,.8kHz,1.5kHz,3kHz,5kHz. 1.5kHz
High Band Gain
-12dB to 12dB(2-3dB’s steps) 0dB
High Band Frequency
5kHz,7kHz,10kHz,12.5kHz,15kHz. 7kHz
Filter
Bandpass 50Hz-15kHz Off
Low shelf/bell selector
Shelf or Bell Shelf
High shelf/bell selector
Shelf or Bell Shelf
Output
-18dB to 18dB 0dB
Trim
-inf to 0dB -inf
Analog
On/Off On
Phase
0deg- 180deg 0deg
Appendix B – 550B Controls
Waves API 550 User Manual
- 19 -
Control Range Default
Low Band Gain
-12dB to 12dB(2-3dB’s steps) 0dB
Low Band Frequency
30Hz,40Hz,50Hz,100Hz,200Hz,300Hz,400Hz 50Hz
Low Mid Band Gain
-12dB to 12dB(2-3dB’s steps) 0dB
Low Mid Band Frequency
75Hz,150Hz,180Hz,240Hz,500Hz,700Hz,1kHz. 500Hz
High Mid Band Gain
-12dB to 12dB(2-3dB’s steps) 0dB
High Mid Band Frequency
0.8kHz,1.5kHz,3kHz,5kHz,8kHz,10kHz,12.5kHz. 5kHz
High Band Gain
-12dB to 12dB(2-3dB’s steps) Off
High Band Frequency
2.5kHz,5kHz,7kHz,10kHz,12.5kHz,15kHz,20kHz. 10kHz
Low shelf/bell selector
Shelf or Bell Shelf
High shelf/bell selector
Shelf or Bell Shelf
Output
-18dB to 18dB 0dB
Trim
-inf to 0dB -inf
Analog
On/Off On
Phase
0deg- 180deg 0deg