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BFX25/50 Bass Amplifier
INPUT
CONTOUR
ACTIVE
1
2
3
The Front Panel:
1. INPUT: The signal output from an instrument (active
or passive) or a line level signal may be connected
here by means of a shielded instrument cable.
2. GAIN: This serves as the input signal level control
for the amplifier, allowing you to set the amplifier for the
best signal to noise ratio.
3: CONTOUR SHAPE: This control is only active when
the Contour Active switch (#4) is depressed. The set-
ting of this control shifts the frequency where the con-
tour effect is centered, giving you a wide variety of
tonal variations, from a studio "V"-shaped tone to a
more "live", more present sound.
4: CONTOUR ACTIVE: This switch, when depressed,
activates the Contour Shape control (#3).
5. LOW: This is the low frequency control which
allows for a19dB range of cut or boost at 60Hz.
6. LOW MID: This is the lower-midrange frequency
control which allows for a 25dB range of cut or boost at
200Hz.
7. HIGH MID: This is the upper-midrange frequency
control which allows for a 19dB range of cut or boost at
1kHz.
8. HIGH: This is the high frequency control which
allows for a 38dB range of cut or boost at 10kHz.
9. MASTER LEVEL: This is the overall output level
control for the amplifier.
10. DSP MODE: Select the type of digital effect(s)
applied to the signal with this control. Each effect and
its central location is called out by the markings around
the control. The effects are described as follows:
DELAY: Slapback delay effect
ECHO: Long delay effect with regeneration
CHORUS: Chorus effect
FLANGE: Light flange effect
EQUALIZATION
4
5
6
7
MASTER
DSP
8
9
10
11
FUNK-WAH: Touch-sensitive wah-wah ("T-Wah") effect
OCTAVE: Adds secondary note one octave lower
than original note
CHO/HALL: Chorus effect with large hall reverb effect
RM: Small room reverb effect
HALL: Large hall reverb effect
11. DSP LEVEL: This is the output level control for the
selected DSP effect(s). For a dry signal (no effect),
rotate the control full counter-clockwise. Rotating the
control clockwise increases the magnitude of the DSP
effect(s) applied to the signal.
12. HEADPHONES: For private listening, connect a
pair of stereo headphones into this jack. The internal
speaker is disconnected when headphones are
plugged in. This jack may also be used to tap a line
level signal from the amplifier, for connecting to a
recording console, house sound board, amplifier, etc.
(Remember that using this jack disconnects the inter-
nal speaker.)
13. SPEAKER: Use this jack to connect the amplifier
to an external speaker cabinet with a minimum imped-
ance rating of 4 ohms for the BFX25 and 8 ohms for
the BFX50. The internal speaker is disconnected when
this jack is used.
14. ON LED: This LED will illuminate when the ampli-
fier is turned on.
15. POWER: This switch applies AC power to the
amplifier. The amplifier is ON when the side of the
switch with the indicator ("I") is depressed.
16. AC LINE CORD (rear panel, not shown): Plug
this cord into a properly wired, grounded, 120 volt, 60
cycle AC outlet. DO NOT attempt to defeat the
ground connection of this power cord! If your ampli-
fier was purchased outside of the United States, see
the unit's rear panel labeling for its power rating, and
follow the above guidelines.
BFX50
12
13
14
15
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