Low Boost; Superfilter - Roland SH-4d Owner's Manual

MFX Parameters
Parameter Value
OFF, ON Turns Low Booster on/off.
Boost Sw
This emphasizes the bottom to create a heavy bass sound.
0–127 Increasing this value gives you a heavier low end.
Boost Lv
Depending on the Isolator and filter settings this effect may be hard to distinguish.
Level 0–127 Output Level

Low Boost

Boosts the volume of the lower range, creating powerful lows.
Parameter
Boost Freq 50, 56, 63, 71, 80, 90, 100, 112, 125 [Hz]
Boost Gain 0–+12 [dB]
Boost Wid WIDE, MID, NARROW
Low Gain -15–+15 [dB]
High Gain -15–+15 [dB]
Level 0–127

SuperFilter

This is a filter with an extremely sharp slope. The cutoff frequency can be varied cyclically.
Parameter
LPF, BPF, HPF, NOTCH
Type
-12, -24, -36 [dB]
Slope
0–127
Cutoff
0–100
Resonance
94
Value
Value
Frequency range that will pass through each filter
LPF: Frequencies below the cutoff
BPF: Frequencies in the region of the cutoff
HPF: Frequencies above the cutoff
NOTCH: Frequencies other than the region of the cutoff
Amount of attenuation per octave
-12 dB: Gentle
-24 dB: Steep
-36 dB: Extremely steep
Cutoff frequency of the filter
Increasing this value will raise the cutoff frequency.
Filter resonance level
Increasing this value will emphasize the region near the cutoff frequency.
Explanation
Explanation
Center frequency at which the lower range will be boosted
Center frequency at which the lower range will be boosted
Width of the lower range that will be boosted
Amount of boost/cut for the low-frequency range
Amount of boost/cut for the high-frequency range
Output Level
Explanation