Roland JD-XA - 29: Dist (Distortion); 30: Gtramp Sim (Guitar Amp Simulator); 31: Comp (Compressor)

36
Eects
29: Dist
(Distortion)
This is a distortion eect that provides heavy distortion. The
parameters are the same as for “28: Overdrive.”
L in
R in
L out
R out
Pan R
Pan L
Amp
Simulator
2-Band
EQ
Distortion
30: GtrAmp Sim
(Guitar Amp Simulator)
This is an eect that simulates the sound of a guitar amplier.
L in
R in
L out
R out
Pan R
Pan L
Pre Amp
Speaker
Parameter Value Explanation
Pre Amp Sw OFF, ON Turns the amp switch on/o.
Type
JC-120
CLEAN TWIN
MATCHDRIVE
BG LEAD
MS1959I
MS1959II
MS1959I+II
SLDN LEAD
METAL5150
METAL LEAD
OD-1, OD-2
TURBO
DISTORTION
FUZZ
Type of guitar amp
Volume # 0–127
Volume and amount of distortion
of the amp
Master # 0–127 Volume of the entire pre-amp
Gain
LOW, MIDDLE,
HIGH
Amount of pre-amp distortion
Bass
0–127
Tone of the bass/mid/treble
frequency range
* Middle cannot be set if
“MATCHDRIVE” is selected as
the Type.
Middle
Treble
Presence 0–127
Tone for the ultra-high frequency
range
Bright OFF, ON
Turning this “ON” produces a
sharper and brighter sound.
* This parameter applies to the
“JC-120,” “Clean Twin,” and “BG
Lead” Types.
Speaker Sw OFF, ON
Selects whether the sound will be
sent through the speaker simulation
(ON) or not (OFF)
SpType
(Speaker Type)
(See the following
table)
Type of speaker
Mic Setting 1, 2, 3
Adjusts the location of the
microphone that is recording the
sound of the speaker.
This can be adjusted in three steps,
from 1 to 3, with the microphone
becoming more distant as the value
increases.
Mic Level 0–127 Volume of the microphone
Direct Level 0–127 Volume of the direct sound
Pan # L64–63R Stereo location of the output
Level # 0–127 Output volume
Specications of each Speaker Type
The speaker column indicates the diameter of each speaker unit
(in inches) and the number of units.
Type Cabinet Speaker Microphone
SMALL 1 Small open-back enclosure 10 Dynamic
SMALL 2 Small open-back enclosure 10 Dynamic
MIDDLE Open back enclosure 12 x 1 Dynamic
JC-120 Open back enclosure 12 x 2 Dynamic
BUILT-IN 1 Open back enclosure 12 x 2 Dynamic
BUILT-IN 2 Open back enclosure 12 x 2 Condenser
BUILT-IN 3 Open back enclosure 12 x 2 Condenser
BUILT-IN 4 Open back enclosure 12 x 2 Condenser
BUILT-IN 5 Open back enclosure 12 x 2 Condenser
BG STACK 1 Sealed enclosure 12 x 2 Condenser
BG STACK 2 Large sealed enclosure 12 x 2 Condenser
MS STACK 1 Large sealed enclosure 12 x 4 Condenser
MS STACK 2 Large sealed enclosure 12 x 4 Condenser
METAL STACK Large double stack 12 x 4 Condenser
2-STACK Large double stack 12 x 4 Condenser
3-STACK Large triple stack 12 x 4 Condenser
31: Comp
(Compressor)
Flattens out high levels and boosts low levels, smoothing out
uctuations in volume.
L in
R in
L out
R out
Compressor
2-Band EQ
2-Band EQ
Compressor
Parameter Value Explanation
Attack # 0–127
Sets the time from when the input
exceeds the Threshold until the
volume starts being compressed.
Threshold # 0–127
Adjusts the volume at which
compression begins.
Post Gain 0–+18 dB Adjusts the output gain.
Low Gain -15–+15 dB Amount of low-range boost/cut
High Gain -15–+15 dB Amount of high-range boost/cut
Level # 0–127 Output volume