Tunable Bass Control; Set Compressor Threshold & Frequency Set Master Control - Mesa/Boogie BASIS M 2000 Owner's Manual

TUNABLE BASS CONTROL

NOTE
When switch
is in the "Down" position
the controls, BASS and
BASS FREQ., shape
and control frequencies from
30Hz to 100Hz.
NOTE
When switch
is in the "Up" position the
controls, BASS and
BASS FREQ., shape
and control frequencies from
100Hz to 200Hz.
(fully cranked) on the Bass Frequency control when the Bass Shift switch is in the Low position. When the Shift is switched to High
you will find this 100Hz. overlap at 7:30 (all the way down) on the Bass Frequency control. This difference in Bass controls in the
FET channel is crucial to its tighter attack and cut-off point characteristics, which is an integral part of the FET channel's
personality...making it strikingly different in nature to the Vacuum Tube channel.
MINI TOGGLES
Locate the 3 mini toggle switches on the right side of this channel and set to these positions.
50Hz 80 180 300 600 1.2K 4K
B M 2000
ASIS
MASTER TREBLE MIDDLE BASS
FIELD EFFECT CHANNEL
COMPRESSOR THRESHOLD & FREQUENCY
COMPRESSION
TUBE
THRESHOLD
3:1
TUBE
5:1
HI GAIN
OFF
OUTPUT LEVEL
FREQUENCY
MASTER CONTROL
B M 2000
ASIS
MASTER TREBLE MIDDLE
FIELD EFFECT CHANNEL
In this channel the bass frequencies are shaped utilizing a pair of parametric type controls.
HIGH
1.2K 4K
6K 8K
EQ IN
LOW
OUT
MIX MODE
BRIGHT
2000
NORMAL
HIGH
HIGH
LOW
LOW
BASS BASS FREQ.
BASS
SHIFT
NNEL
6K 8K
EQ IN
OUT
MIX MODE
BRIGHT
ON
NORMAL
HIGH
BASS FREQ.
LOW
POWER
50%
COMPRESSION
FET
MIX
THRESHOLD
FET
CLIP
FREQUENCY
With your instrument still connected to the appropriate jack, SLOWLY bring up the FET channel's
NORMAL
HIGH
LOW
BASS BASS FREQ.
BASS
SHIFT
Two rotary controls, Bass and Bass Frequency enable you to
center in on the region of lows that you wish to enhance and
boost or cut them to your desire. Just to the right of these two
controls there is a mini-toggle switch that enables you to
"Shift" the region of bass that the Bass Frequency rotary
control affects.
ON
As you might have guessed, this mini-toggle switch lowers
the action of the control when in the down position and
shifts the region up higher when the toggle is in the up
POWER
position. So that you have complete control of the entire
range of low frequencies, the Low and High ranges of the
Bass Shift overlap at 100Hz.. This overlap occurs at 5:30
Set the Field Effect Channel Compressor's Threshold and Frequency
Controls per this example, while leaving the Ratio toggle
switch in the OFF
3:1
5:1
OFF
MASTER Control to the desired volume.
PAGE 5
3:1
(down position.)
5:1
OFF