Fender Bassman 1200 Operating Instructions Manual page 6

The Bassman ® 1200 bass amplifier delivers world-class Fender
tone and professional features:
• 1200 Watts output power into 2Ω
• Two channel switching and channel mixing
• 10-band graphic EQ with trim plus low and high tone controls
• Split band compressor with balance, and gain trim controls
• Mid-frequency notch plus low- and high-frequency boost buttons
®
1200
Input
-6dB Ch 1/2
Ch 1 Mix
pad
Ch 1
Ch 2
Volume
Gain Volume
A. INPUT - Plug your electric bass guitar in here.
B. –6 dB PAD – Reduces input sensitivity when pressed IN.
Useful for high output (active) pickups.
C. CH 1 VOLUME – Adjusts the loudness of channel 1.
D. CH 1 LED – Illuminates when only channel 1 is active
(Ch Select button OUT).
E. CH 2 GAIN – Adjusts the channel 2 distortion level.
F. CH 1 / 2 MIX LED – Illuminates when channel mixing is active
(Ch Select button IN).
G. CH 2 VOLUME – Adjusts the loudness of channel 2 together
with Ch 2 Gain.
H. CH SELECT – Channel 1 is active when this button is OUT.
Both channel 1 and 2 are active when pressed IN. This button
is overridden by the corresponding footswitch button when
the footswitch is plugged in.
I. CH 1 / 2 MIX – Mixes channel 1 and 2 signals to any ratio
when the Ch Select button is pressed IN. At "1," only channel
1 is in the output mix; at "10," only channel 2 is in the output
mix. At "5," equal amounts of each channel are in the mix.
J. DEEP – Boosts the low frequencies when pressed IN.
K. LOW – Adjusts the low frequency tone of both channels.
L. MID NOTCH – Scoops (reduces) mid-frequency tones when
pressed IN to emphasize the high and low frequencies.
M. BRIGHT – Boosts high frequencies when pressed IN.
N. HIGH – Adjusts the high frequency tone of both channels.
O. LINE OUT – Includes onboard (external effects loop excluded)
tone adjustments with the Line Out jack signal when this
button is pressed IN . Onboard tone controls are bypassed
when this button is OUT.
P. GRAPHIC EQ - Filters the signal in 10 pass/reject bands,
spaced at octave intervals. The graphic equalizer allows signal
to pass through unaffected when all sliders are positioned at
their center notched positions. Sliders above center will boost
B B a a s s s s
B B a a s s s s
31.5 63 125
Ch
Select Deep
Ch 2 Ch 1/2
Low
Mix
m m a a n n ® ® 1 1 2 2 0 0 0 0
® ®
m m a a n n 1 1 2 2 0 0 0 0
® • Footswitch activation of channel selector, equalizer and
compressor
• Low-noise, differential effects loop jacks
• Three line-level
configurations
• Tuner out jack with audio mute for silent tuning
• Rack mountable, all steel chassis
eq
250 500 1k 2k 4k 8k 16k
trim
Graphic
Line Out
Mid Input
Notch Bright Level
Post
Low
Pre
High
Comp
signal, those below center will cut signal at the indicated
frequencies. Adjust the EQ Trim slider when the equalizer is
active if any unwanted change in the overall amplifier volume
occurs when switching the graphic EQ ON or OFF.
Q. GRAPHIC EQ LED – Illuminates when the graphic EQ is
active (Graphic button IN).
R. GRAPHIC – Activates the graphic equalizer when pressed IN.
This button is overridden by the corresponding footswitch
button when the footswitch is plugged in.
S. LOW COMP – Adjusts signal compression below 400 Hz.
T. INPUT LEVEL LED – Shows signal strength with green
indicating a signal above the compressor threshold and red
indicating a signal above the pre-amp clipping/distortion
threshold.
U. HIGH COMP – Adjusts signal compression above 400Hz.
V. COMP LED – Illuminates when the compressor is active
(Comp button IN).
W. COMP EQ BAL – Mixes low and high compressors to any
ratio when the Comp button is pressed IN. At "1," only the low
compressor is in the output mix; at "10," only the high
compressor is in the output mix. At "5," equal amounts of
each compressor are in the mix.
X. COMP – Activates the high and low compressors when
pressed IN. This button is overridden by the corresponding
footswitch button when the footswitch is plugged in.
Y. COMP GAIN TRIM – Adjusts compressor gain level to
compensate for any difference in the overall amplifier volume
that may be heard when switching the compressor ON or OFF.
Z. TUNER ONLY – Mutes all audio output when pressed IN.
Useful for silent tune-ups with a tuner connected at the Tuner
Out jack on the rear panel.
AA.MASTER VOLUME – Adjusts the overall loudness of the
amplifier in combination with the gain and volume controls of
the active channel(s).
BB.POWER – Switches the amplifier ON or OFF.
6
output jacks for various
Comp
Comp
On
Comp
High Comp
Off
Eq Bal Gain Trim
Comp
connection
Power
Tuner
Only
Master
Volume