8. ATTACK CONTROL. The ATTACK control determines how long the compressor takes to respond to signals above the threshold. The Attack control is continuously variable and determines the necessary length of a transient to initiate gain reduction.
With 63% gain reduction: SLOW 0.13s, MID 0.07s, FAST 0.013s.
With 90% gain reduction: SLOW 0.64s, MID 0.35s, FAST 0.064s.
Fully counter clockwise at the slowest setting will prevent most percussive signals from causing limiting or compression. It is available on both the left and the right channel.
9. RECOVERY CONTROL. The RECOVERY control determines how long the compressor takes to recover after the signal falls below the threshold level.
With 63% gain reduction recovery, five selections: 0.1s, 0.16, 0.32, 0.64s, 1.7s.
With 90% gain reduction recovery five selections: 0.227s, 0.368s, 0.736s, 1.6s, 3.87s.
10. LINK FUNCTION. When The LINK function is used it links the two Stereo channels together. The Left channel controls become the master linking THRESHOLD, ATTACK & the RECOVERY CONTROLS.
11. INPUT LEVEL SWITCH. The Input Level is controlled by a toggle switch. There is an Input Level control for each cannel. Three levels of attenuation are available. +3dB, 0dB and -3dB.
12. HP SC SWITCH. The High Pass Side Chain filter is factory set a 100Hz. When this switch is engaged and illuminated, everything above 100Hz will have the effect of limiting or compression. Useful if you want the bass to come through with full impact and limit or compress everything else.
13. POWER SWITCH. The Power Switch glows a soft blue color when an IEC power lead is connected to the unit. This indicates that the Nu Mu is in STANDBY mode. Engaging the power switch takes the Nu Mu out of standby mode and into warm-up mode. The power switch will illuminate to a brighter blue and the backlit VU meters will start to flash. This warm-up process last 30 seconds, after which the MUTE relays will lift and the VU meters will stop flashing.