Rocktron Utopia B300 - Manual (Page 27)

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The BASS parameter adjusts the amount of low frequency information at the
output of each preset.
The MID parameter adjusts the amount of mid frequency information at the out-
put of each preset.
The TREBLE parameter adjusts the amount of high frequency information at the
output of each preset.
The PRESENCE parameter also adjusts the amount of high frequency informa-
tion at the output of each preset.
The BRIGHT parameter is displayed only when DEEP, NORM or BRITE pre-
amps are active. The options you have are IN or OUT.
The SCOOP parameter is displayed only when DIST (the distortion peramp) is
active, and provides a fixed scoop of the mid frequencies.
The MASTER parameter determines the overall signal level coming out of the
preamp section.
The SYMMETRY parameter (only available when the DIST preamp is selected)
adjusts the symmetry of the wave form. This may be adjusted from -28dB to
+6dB. 0dB is symmetrical. This may be used to approximate a tube bias charac-
teristic. Depending on the settings and polarity more even or odd harmonics may
be produced during the distortion process.
Tip: When using -28dB you will notice a sense of a clean tone mixed in with the
distortion. This is a direct result of the Asymmetrical waveform transformation
process. By using varying amounts of symmetry a “ Tube feel” may be realized.
The POLARITY parameter (only available when the DIST preamp is selected)
determines which half of the wave gets processed.
The DX-FILTER parameter (only available when the DIST preamp is selected)
filters off the "harsh" high-end content. The lower the number the more high-
end cut. Zero (0) is no change.
When DIST channel is being used the MIX parameter provides the ability to
blend the Distortion with the Direct input before post EQ and effects processing.
The DIRECT LOW PASS FILTER attenuates frequencies down to lower bass.
This is useful when wanting to add only lower bottom end clean ambience into
the distortion blend. This provides transparent injection of low end presence
without sounding like two channels being mixed together.
BASS
MID
TREBLE
PRESENCE
BRIGHT
SCOOP
MASTER
SYMMETRY
POLARITY
DX-FILTER
MIX
DIR LPF
6. PREAMP Function continued.....