ZOOM HD8/HD16 179
Appendix

Effect parameters

COMP/LIMITER module
Parameter description
EFX module
Parameter description

Insert effect

CLEAN, DISTORTION, ACO/BASS SIM algorithm
Type Parameter
Compressor Sense Attack Tone Level
MXR Dynacomp type compressor.
Rack Comp Threshold Ratio Attack Level
Compressor with more detailed adjustment.
Limiter Threshold Ratio Release Level
Limiter for suppressing signal peaks above a certain level.
Parameter name Setting range Description
Sense 0 – 10 Adjusts compressor sensitivity.
Attack Compressor: Fast, Slow Selects compressor response speed.
Rack Comp: 1 – 10 Adjusts compressor response speed.
Tone 0 – 10 Adjusts tonal quality.
Level 2 – 100 Adjusts signal level after passing module.
Threshold 0 – 50 Adjusts threshold for compressor/limiter action.
Ratio 1 – 10 Adjusts compressor/limiter compression ratio.
Release 1 – 10 Adjusts delay until compressor/limiter release from point where signal level falls below
threshold level.
Type Parameter
Auto Wah Position Sense Resonance Level
Auto wah dependent on dynamics of input signal.
Tremolo Depth Rate Wave Level
Periodically varies the volume level.
Phaser Position Rate Color Level
Produces a swooshing sound.
Ring Modulator Position Frequency Balance Level
Produces a metallic ringing sound. Adjusting the Frequency parameter results in a drastic change of sound character.
Slow Attack Position Time Curve Level
Slows down the attack rate of the sound.
Fix-Wah Position Frequency Dry Mix Level RTM Mode RTM Wave RTM Sync
Changes the wah frequency according to rhythm tempo.
Parameter name Setting range Description
Position Before, After Sets connection position of EFX module to “Before” (before PREAMP) or “After” (after
PREAMP).
Sense -10 – -1, 1 – 10 Adjusts auto wah sensitivity.
Resonance 0 – 10 Adjusts resonance intensity.
Level 2 – 100 Adjusts signal level after passing module.
Depth 0 – 100 Adjusts modulation depth.
Rate 0 – 50 e (Table 1) Adjusts modulation rate. Using rhythm tempo as reference, setting in note units is also
possible.
Wave Up 0 – 9, Down 0 – 9,Tri0 – 9 Sets modulation waveform to “Up” (rising sawtooth), “Down” (falling sawtooth), or
“Tri” (triangular). Higher values result in stronger clipping, emphasizing the effect.
Color 4Stage, 8State, Invert4, Invert8 Selects sound type.
Frequency Ring Modulator: 1 – 50 Adjusts frequency used for modulation.
Fix-Wah: 1 – 50 Adjusts wah center frequency. Can also be controlled by pedal.