Hughes & Kettner 400 Musical Instrument Amplifier User Manual


 
BASSBASE
400
-
MANUAL
Red VARIMETRIC LED:
Illuminates to indicate
the VARIMETRIC EQ is
active.
FX LOOP ON: Press this button
to activate the E
parallel
FX
loop
BASSBASE 400’s
DYNACLIP LED:
Illuminates when the DYNACLIP power
amp circuit is active. DYNACLIP eliminates undesirable
power amp distortion and provides
20% additional
headroom in comparison with conventional power amps.
,
VARIMETRIC ON:
Green FX LED:
Activates the
Indicates the FX
VARIMETRIC EQ.
loop is active.
NOTCH FILTER: This
adjustable, extremely
narrow-band filter is not
used for normal
sound-
shaping, but to suppress
specific stage and room
resonances (e.g. a stage
floor’s sympathetic
vibrations).
PROTECT LED: Illuminates when one of the power
amp circuit breakers has tripped. Inadequate
ventilation, a short circuit in the SPEAKER OUTS or
direct current in the output will trigger the circuit
breaker.
TEMP LED: Indicates that thermal overload
(overheating) is the reason why the protective
circuit has activated (e.g. when the ribbed
ventilation duct is obstructed).
FREQ
KHZ
LEVEL
dB
FREQ
HZ
CUT
dB
FREQ: Use this control
to adjust the notch
filter’s center frequency
within a range of 30 to
500 Hz.
s
control adjusts the
LEVEL: T
level of the center frequency you
selected via the FREQ KHZ control.
MAINS
PHONES
-
MAINS: AC
power switch.
MASTER: Controls
I
the
BASSBASE
400’s PHONES: Plug headphones
overall output.
with an impedance rating
within the 4-600 ohm range
into this jack.
FX-
MIX : The FX MIX pot adjusts the
balance between the original signal and
the processed signal. DRY = original
signal only, WET = processed signal only.
FREQ KHZ: Defines the center
frequency for the
EQ's
HI
RANGE section.
CUT: Turn this control up to suppress the
frequency you selected via the FREQ
control.
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