Guided Tour - Front Panel
4. Low EQ control- This control provides approximately 15 db of cut or boost at 100 Hz,
with a peak (bell) curve. When the knob is at the 12 oOclock (O0�) position, there is no
boost or attenuation (that is, flat response). As it is turned clockwise from the O0� position,
the frequency area is boosted; as it is turned counterclockwise from the O0� position, the
frequency area is attenuated. For more information, see the OUsing Equalization and
Shape�section on page 8 in this manual.
5. Mid EQ control- This control provides approximately 15 db of cut or boost at 830 Hz,
ENGLISHwith a peak (bell) curve. When the knob is at the 12 oOclock (O0�) position, there is no
boost or attenuation (that is, flat response). As it is turned clockwise from the O0� position,
the frequency area is boosted; as it is turned counterclockwise from the O0� position, the
frequency area is attenuated. For more information, see the OUsing Equalization and
Shape�section on page 8 in this manual.
6. High EQ control- This shelving control provides approximately 15 db of cut or boost
at 5 kHz. When the knob is at the 12 oOclock (O0�) position, there is no boost or attenuation
(that is, flat response). As it is turned clockwise from the O0� position, the frequency area
is boosted; as it is turned counterclockwise from the O0� position, the frequency area is
attenuated. For more information, see the OUsing Equalization and Shape�section on
page 8 in this manual.
7. Line Out - This standard unbalanced 1/4" jack provides a line-level post-EQ and
post-Volume (and, in the B60, B90 and B120 models, post-Shape) output signal from the
B Series. YouOll usually use this to connect the B Series signal to a line-level input when
interfacing with PA systems or recording mixing consoles. The signal from this output is
the same as that from the Preamp Out on the rear panel (see #3 on page 5).
8. Headphones jack- Connect any standard stereo headphone (600 ohms or less) to
this standard 1/4" stereo jack. When a plug is inserted into the headphone jack, the
speaker output is disconnected, allowing you to use your B Series as a practice amplifier.
The level of the signal sent to the headphones is determined by the setting of the Volume
knobN at the point where a connected speaker would clip, the headphones will clip.
WARNING: Because even the smallest B Series amplifier is capable of generating
extremely high headphone signal levels, alwaysstart with the Volume knob at
minimum and then slowlyturn it up. In particular, a clicking sound is an indication
of distortion and possible damage to the headphones (and/or your hearing!); donOt
let things get to that point!
9. Power switch - Use this to power the B Series on or off. When powered on, an LED
inside this switch is lit.
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ACEC
