
VOLUME:
Control for volume.
FERRO
will be switched on by turning the volume potentiometer.
TREBLE / BASS:
The outer / bigger knob controls the bass frequencies. The inner / smaller knob controls the
high frequencies.
FILTER:
The filter-potentiometer is the most powerful tool of
FERRO
. If you turn it fully clockwise it
doesn’t affect the sound at all. You will get the crystal clear sound from the early 80s. By turning
the knob counter clockwise, the high frequencies will be cut steep. If you set the knob to “
P
”
you will have the setting of the original Peterson preamp from the 70s.
ATTENTION: If you connect your Rhodes through the regular output on the namerail and set
the EQ neutral, the change in sound using the FILTER-knob will be subtle. We suggest using
the RCA-jack (remove the plastic lid, back left).
Try
turning the treble potentiometer fully clockwise and adjust the filter-knob accordingly while
playing in the mid / upper register.
VIBRATO – ON/OFF:
For nostalgic reasons we decided to call it “vibrato” although it’s a tremolo. With this switch you
can engage the vibrato.
NOTE: We have integrated two LEDs. Each LED represents the volume of one channel. If the
vibrato is switched off both channels are running on half volume, so both LEDs light with half
power as well. That means although the vibrato is switched off, the LEDs will still be on. The
LEDs are useful as power indicator since they always shows something when FERRO is
powered on.
VIBRATO – SPEED / DEPTH:
The outer / bigger knob changes the depth of the vibrato. The inner / smaller knob changes
the speed.
VIBRATO – SHAPE:
With this switch you can change the waveform of the vibrato engine.
When set to “
sine
” you will get a wide and atmospheric sound which is especially impressive
on low speeds. Use this waveform to create a pseudo stereo effect as well.
When set to “
square
” you will get the classic Rhodes vibrato sound.