Thermionic Culture THE FAT BUSTARD II 12 Channel Summing mixer - Manual (Page 5)

© Thermionic Culture Ltd, May 2011 4
2 Controls
2.1 Attitude
The Attitude control has the same effect as found in
Thermionic Culture’s Rooster. At low settings (1 is low,
Max is high) the distortion is kept to a minimum and the
frequency response of the unit is very flat. At higher
settings the distortion increases and the frequency
response changes, tending to become less linear at high
frequencies.
At setting 1 on the attitude control the summing amplifier is
working at unity( 0dB ) gain. As the Attitude control is
increased the gain rises to +14dB at the max setting.
2.2 EQ section
The EQ section comprises a Bass lift, Top lift, Bass cut and
Top cut.
The Bass lift and Top lift utilise Thermionic Culture’s own
varislope
EQ curves where:-
The Bass lift curve starts to rise at 2kHz at low settings
and at high settings the curve peaks at 50Hz.;
The Top lift curve starts to rise at 800Hz at low settings
and then gives a peak at 10kHz at high settings.
The Bass cut is a stepped switch control. Positions 1 to 3
give a 6dB / octave High pass filter rising in frequency as
the control is increased. Then positions 4 to 6 give a
shelving filter that begins to act higher in frequency as the
control is increased. This is intended to be used with the
Bass lift control, much like classic passive valve EQ
designs whereby a bass cut that acts slightly higher than
the bass lift will give a mid cut, then a bass lift.