Yamaha FX550 - Manual (Page 17)

chapter 4: Effect parameters
Compressor/Limiter — COMP
The compressor/Limiter effect section reduces the level of loud sounds and increases the level of
quiet sounds, making the volume level more consistent (reduced dynamic range). In addition,
sounds are sustained. Compressors are often used when recording guitars, a reduced dynamic
range makes it much easier to set recording levels.
TYP Compression Type
CMP Compressor
LIM Limiter
SUS Sustain 0-100%
0 = no sustain.
100 = maximum sustain.
ATK Attack 0 - 2 0
0 = fast attack.
20 = siow attack.
LVL Output Levei - oo, -30 dB - +6 dB Sets the output ievei of the effect.
Distortion/Overdrive — DIST
Distortion is one of the most widely used guitar effects and is an essential part of rock music.
The FX550’s distortion/overdrive effect section produces a smooth, rich powerful distortion that
rivals that of the best valve amps. Many types of distortion effect can be produced, everything
from soft overdrive to hard distortion. This effect also includes a noise gate that can be used to
attenuate unwanted hiss and noise while you are not playing.
TYP Distortion type
DS1 Typical distortion.
DS2 Fusion style solo distortion.
OD1 Typical overdrive.
OD2 Valve amp overdrive.
CRN Crunchy distortion.
DRV Drive 0 - 100%
0 = minimum distortion.
100 = maximum distortion.
TON Tone -30 - +30 Higher values produce a sharp bright sound.
LVL Output Levei - oo, -30 dB - +6 dB Sets the output level of the effect.
NGL Noise Gate Threshold 0 - 2 0 The level at which the noise gate cuts in.
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