Boss Audio Systems BR-900CD owner manual Mixer, Limiter, Output, 107

Mastering Tool Kit Parameter Functions

Compressor

This compresses the overall output signal when the input volume level exceeds a set value.

On/Off OFF, ON

This parameter turns the compressor effect on/off.

Lo Thres -24–0 dB

This sets the volume level at which the lower-range compressor goes into effect.

Lo Ratio 1:1.00–1:16.0, 1:INF

This sets the ratio of suppression of the lower-range output when the input level exceeds the Lo threshold level.

Lo Attack 0–100 ms

This sets the time it takes for the lower-range compressor to go into effect once the input level exceeds the Lo threshold level.

Lo Release 50–5000 ms

This sets the time it takes for the lower-range compressor effect to stop once the input level falls below the Lo threshold level.

Mid Thres -24–0 dB

This sets the volume level at which the midrange compressor goes into effect.

Mid Ratio 1:1.00–1:16.0, 1:INF

This sets the ratio of suppression of the midrange output when the input level exceeds the Middle threshold level.

Mid Attack 0–100 ms

This sets the time it takes for the midrange compressor to go into effect once the input level exceeds the Middle threshold level.

Mid Release 50–5000 ms

This sets the time it takes for the midrange compressor effect to stop once the input level falls below the Middle threshold level.

Hi Thres -24–0 dB

This sets the volume level at which the upper-range compressor goes into effect.

Hi Ratio 1:1.00–1:16.0, 1:INF

This sets the ratio of suppression of the upper-range output when the input level exceeds the Hi threshold level.

Hi Attack 0–100 ms

This sets the time it takes for the upper-range compressor to go into effect once the input level exceeds the Hi threshold level.

Hi Release 50–5000 ms

This sets the time it takes for the upper-range compressor effect to stop once the input level falls below the Hi threshold level.

*With the compressor, the level is automatically adjusted to the optimum setting according to the threshold (Thres) and ratio (Ratio) settings. In addition, since lengthening the attack (Attack) setting may result in distortion, a buffer (margin) of -6 dB is provided. Adjust the Mixer level as needed.

Mixer

Adjusts the volume of each frequency band.

Lo Level -80– +6 dB

Sets the volume level of the lower range after the signal passes through the expander and compressor.

Mid Level -80– +6 dB

Sets the volume level of the midrange after the signal passes through the expander and compressor.

Hi Level -80– +6 dB

Sets the volume level of the upper range after the signal passes through the expander and compressor.

Limiter

This suppresses high-level signals to prevent distortion.

On/Off OFF, ON

Sets the limiter to ON or OFF.

Thres -24–0 dB

Adjust this as appropriate for the input signal from your bass.

Attack 0–100 ms

This sets the time it takes for the limiter to go into effect once the input level exceeds the threshold level.

Release 50–5000 ms

Adjusts the time until when the limiter will turn off after the input level falls below the threshold level.

Output

This makes settings that affect the overall output.

Level -80– +6 dB

Sets the volume level of the overall sound after the signal passes through the limiter.

Soft Clip Off, On

This suppresses noticeable distortion occurring with heavy use of the compressor/limiter effect.

Dither OFF, 24–8 BIT

This prevents the action of muting sounds from being too noticeable.

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