Mesa/Boogie M 2000 Stereo Amplifier User Manual


 
Set the FIELD EFFECT CHANNEL rotary controls and the 9 Band Graphic E.Q.
per this example, making sure that the FET channel's MASTER control
is set to zero. You will notice there is no Gain control in this channel.
This was done to make room for a different tone control wiring scheme.
The FET channel's Treble and Mid are wired in the same fashion as that of
the Tube channel (though they may seem to enhance different frequencies
because of the very nature of the FET design.) The Bass controls are
where the similarity ends.
ROTARY CONTROLS & GRAPHIC EQ
OUT
EQ IN
MIX MODE
BRIGHT
NORMAL
HIGH
LOW
BASS
SHIFT
FIELD EFFECT CHANNEL
MIDDLE
TREBLE
BASS
MASTER
BASS FREQ.
BASIS M 2000
80
180
300
600 1.2K
50Hz
4K
6K
8K
ON
POWER
COMPRESSOR
Turn on the Compressor by selecting the 3:1 position on the face panel of the M-2000. With the
Threshold set per the example to the left, play a low note and sweep the Frequency control clockwise.
You will notice less compression as you pass 12 O' clock until there is none at all. Now reverse this
procedure. Play a high note (you may have to change the Threshold to maximize the effect for this
test) and sweep the Frequency control counter-clockwise. As you pass 12 O' clock you will again hear
the compression effect lessen. This "Shelving" (frequency specific) control allows the compression of
the low frequencies without affecting the high frequencies and similarly the opposite. To compress
the lows and highs equally, set the Frequency control straight up to 12 O' clock and adjust the
Threshold control accordingly. Select the 5:1 ratio position for a much "thicker" compression.
Remember that the Threshold setting is crucial to obtaining a usable, musical compression
setting. Following the same procedure, we will run through the Field Effect Channel.
INSTRUMENT
INPUTS
ACTIVE
BRIGHT
NORMAL
80
180
300
600 1.2K
50Hz
4K
6K
8K
OUT
EQ IN
MIX MODE
While playing an open string, activate the BRIGHT / NORMAL switch to the (up
position.)
Become familiar with the frequencies that this
switch enhances as it works along side the
Graphic Equalizers' top 3 bands ( 4 - 6 - & 8K ) to
bring out the upper harmonics and sparkle.
BRIGHT / NORMAL SWITCH
BRIGHT
NORMAL
FIELD EFFECT CHANNEL
9 BAND EQ
Set the Tube Channel's 9 Band Equalizer per this example (if you have not done so) and activate it by using
the 3 position mini toggle switch (up position.)
BRIGHT
NORMAL
INSTRUMENT
INPUTS
ACTIVE
80
180
300
600 1.2K
50Hz
4K
6K
8K
OUT
EQ IN
MIX MODE
OUT
EQ IN
MIX MODE
To activate the 9 Band Equalizer via the
Footcontroller, you must have the front panel 3
position mini toggle switch in the OUT position or in
the MIX MODE position. There are two of these
switches, one per channel located to the right and
left respectfully. When the E.Q. 3 position switch is
in the MIX MODE, the E.Q. will automatically be
engaged.
THRESHOLD
COMPRESSION
FREQUENCY
3:1
OFF
5:1
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