User's Manual

Fredenstein F610 Universal Entzerrer UE-1
In the lower part of the screen, there are ten touch fields:
LC: First touch to select the low-cut filter, second touch to toggle the low-cut functionality on or
off. If the low-cut filter is enabled, the lower third of the LC touch field is yellow and states the
low-cut frequency. The frequency can then be varied from 20 Hz to 975 Hz by he rightmost knob,
just below the screen, labeled “FREQ” .
F1: First touch to select Filter 1, second touch to toggle the low-shelf functionality on or off.
If the low-shelf filter is enabled, the lower third of the F1 touch field is yellow and states “LoS”
(Low-Shelf). In regular band-pass filter mode, the gain, q-factor and frequency can the varied with
the three knobs below the display, from left to right: Gain, Q-factor, and Frequency. In shelving
mode the Q-factor control is disabled.
F2: Touch to select Filter 2. Filter 2 is always a band-pass filter. When the F2 touch field is lit,
the three control knobs below the display can be used to change the parameters
F3: Touch to select Filter 3. Filter 3 is always a band-pass filter. When the F3 touch field is lit,
the three control knobs below the display can be used to change the parameters
F4: First touch to select Filter 4, second touch to toggle the high-shelf functionality on or off.
If the high-shelf filter is enabled, the lower third of the F4 touch field is yellow and states “HiS”
(High-Shelf). In regular band-pass filter mode, the gain, Q-factor and frequency can the varied with
the three knobs below the display. In shelving mode the Q-factor control is disabled.
L: Touch to select the left channel and enable the two channel mode. In two channel mode
the F610 allows for different parameters in the left and right channels. When the L touch field is lit,
the three control knobs below the display can be used to change the parameters of the selected filter
of the left channel.
R: Touch to select the right channel and enable the two channel mode. In two channel mode
the F610 allows for different parameters in the left and right channels. When the R touch field is lit,
the three control knobs below the display can be used to change the parameters of the selected filter
of the right channel.
ST: Touch to select the Stereo mode. In the Stereo channel mode the parameters of the left and
right channels are identical. When the ST touch field is lit,
the three control knobs below the display can be used to change the parameters of the selected filter
of the Stereo channel. The Stereo channel is a virtual third channel and does not change the
parameters of the L or R channel.
Col: Touch to toggle the “Color” function. When the Col touch field is lit, the color function is
enabled. Color produces a tube like sound, more mellow and smooth without changing the
frequency response by adding harmonics to the spectrum.
On / Off: Toggles the hard bypass functionality. If ON is displayed inside the touch field, the
corresponding channel (L, R, or ST) is activated, if OFF is displayed, the hard bypass mode is
selected. This allows for quick comparisons of the source signal and the eq'ed result.
Fredenstein F610 Manual V1.0 Nov 17, 2017 Page 5