GFI System ROSSIE User manual

User Manual
ROSSIE
FILTER
Table of Contents
1 Knobs and Buttons Page 1
2 Footswitches and LEDs 2
3 Expression Input 3
4 Tap-Tempo Input 3
5 Saving Presets 4
6 Options 4
7 Global Settings 5
8 Algorithms 6-8
9 Expression / Ramping Setup 9
10 Factory Reset 10
USER MA NUAL

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User Manual
Every knob is also a button. The following operations can be done on each knob :
TURN PUSH or TAP HOLD TWIST ( hold and turn )
Here’s a summary of what each knob and each switch does, this is just a quick reference, more detailed
explanation will be given in the next chapter.
 Turn - adjust primary parameters.
 Push - toggle expression mapping for the parameter.
 Hold - enter expression heel/toe value setup.
 Twist - Adjust secondary parameter (see table below).
 Turn - select modes.
 Push - Enter OPTIONS menu.
 Hold - enter GLOBALS setting menu.
 Twist - Adjust secondary parameter (see table below).
ROSSIE
FILTER
KNOB 1, 2, and 3
KNOB 4
1. Knobs and Buttons
Primary Parameters Secondary Parameters
knob 1 knob 2 knob 3 knob 1 knob 2 knob 3
ENVELOPE FILTER Sensitivity Range Mix Up/Down Q Filter Type
STEP FILTER Speed Step Edit Mix Step size Range Filter Type
MANUAL FILTER Frequency Range Mix Taper Q Filter Type
Modes

ON/OFF LED PRESET LED
Orange: Preset A, Green : Preset B
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User Manual
TEMPO LED
Momentary Operation
< when bypassed > ~ Holding the Engage/Ramp button down for at least 1/2 sec triggers mo-
mentary operation, i.e pedal will revert to bypassed state when footswitch is released.
Ramping
< when engaged > ~ Holding the button for at least 1/2 sec triggers ramping operation : a
mapped parameters is ramped from its initial value to pre-configured final value, and stays at
that final value for as long as the footswitch is held down. When switch is released the parame-
ter gradually returns to its initial value.
A/B - TAP switch Priority.
Priority for the A/B-TAP footswitch can be reversed in Global setting (see page 6 for details).
A/B - TAP SWITCH
TAP
-> bypass / engage
HOLD (when bypassed) for > 500 ms
-> engages momentarily
HOLD (when engaged) for > 500 ms
-> start parameter ramping.
TAP
-> change preset (A <-> B)
HOLD for 1 second
-> enter tap-tempo mode: when
tempo LED stops blinking you may tap
in the new tempo*.
* Tap-tempo is applicable only in
Step Filter mode.
ROSSIE
FILTER
ENGAGE / RAMP SWITCH
2. Footswitches and LEDs

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ROSSIE
FILTER
USER MA NUAL
OUTPUT
EXPRESSION
MONO IN
TAP TEMPO
MONO OUT
3. Expression Input
An expression pedal may be used to control any one of the primary parameters, alternatively a tap
tempo pedal may be used to remotely send tap tempo signal to the pedal.
INPUT
wiper
Tip
Ring
Expression Pedal requirement.
Some expression pedal on the market has its
wiper connected to the Ring instead, this will
not work with Rossie. Make sure you get the
suitable type : Wiper-to-Tip.
Wiper resistance value should be 10 to 20
KOhm.
4. Tap Tempo Input
A tap-tempo pedal may be connected to the EXP/TAP input to remotely tap in the tempo. The
switch contact must be ‘Normally-Opened’ (NO) type.
TS cable & plug
TAP
PEDAL
Resistance value
10K Ohm
to
20K Ohm
Auto detection
Upon power up Rossie will automatically detect the presence (or absence) of an expression
pedal or a tap-tempo pedal. Therefore, after plugging/unplugging the external gear you need
to recycle power to the Rossie to let it detect the changes.

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Save to:
A <-> B
Press and Hold both buttons
ROSSIE
FILTER
1
Tap the left button to save to preset A, or
Tap the right button to save to preset B.
2
~ release the hold when the screen reads:
If, after entering the Preset-Save scene, you change your mind and would like to exit
without saving any changes, you can do so by :
 Holding both buttons again for 2 seconds.
OR
 Doing nothing for 5 seconds, you will automatically return to the main scene.
6. OPTIONS
5. SAVING PRESETS
Tap the MODES button to enter Options menu.
Use the MODES knob/button to navigate around the menu.
Options
1. Volume
2. Sub-Div 1:1
1:2
1:3
1:4
- options settings are specified on per/preset basis.

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7. Global Setting
Press and hold the MODES button for 2 secs to enter Globals menu.
Use the MODES knob/button to navigate around the menu.
Globals
1. Tempo Preset
Global
2. Priority A/B
Tap
: use tempo as saved in preset.
: use global tempo.
: Changing preset is priority.
: Tap-tempo is priority.
The Priority setting determines how the A/B-Tap button behaves.
Priority set to A/B (default)
 Tapping the A/B-Tap button toggles between preset A and preset B.
 Holding the A.B-Tap button for 1 second enters tap-tempo mode where the button
functions as tap-tempo button. The button reverts back its normal function as preset-
change button after 2 seconds of non-activity on the button.
Priority set to Tap-Tempo
 Tapping the A/B-Tap button sets a new tempo.
 Holding the A/B-Tap button for 1 second toggles between preset A and preset B.
ROSSIE
FILTER

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8. Algorithms
ROSSIE
FILTER
8.1 ENVELOPE FILTER
This is a highly flexible envelope-controlled filter that follows the dynamic of your picking. Direc-
tion of the filter sweep may be set to UP (standard envelope filter) or DOWN. Vast pallete of
sound is readily accessible through a selection of four distinct filter types: lowpass, bandpass,
highpass, and peaking.
PARAM knob - adjusts the sensitivity of the envelope detector. Set it to lower values when
your guitar has higher pickup output level, and set it to higher values if the
pickup has lower output level.
RANGE knob - adjusts the range of the frequency sweep.
MIX knob - adjusts the wet and dry mix.
Secondary parameters
Direction:
 Up
 Down
Q (filter bandwidth)
 Low
 Medium
 High
 Sharp
Higher setting gives more pronounced
filtering
Filter Types:
 Lowpass
 Bandpass
 Highpass
 Peaking

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8. Algorithms
Twist the MODES button to select the step whose amplitude you’d like to edit
ROSSIE
FILTER
8.2 STEP FILTER
This is a dynamic filter where the resonance frequency is arpeggiated (stepped) continuously.
The number of steps is selectable from 4 to 8, and the amplitude of each step is freely adjust-
able. Tempo of the stepping can be tapped, with four selectable subdivisions. Again, four distinct
filter types are available to choose from.
Amplitude
use the RANGE knob to adjust the amplitude of the step
In ‘Random’ mode the number of steps is fixed to 8 and the amplitude of the steps are
randomly modulated, this creates a nice ‘jumpy’ filter groove!
PARAM knob - adjusts the tempo of the stepping.
RANGE knob - adjusts the amplitude of the steps.
MIX knob - adjusts the wet and dry mix.
Secondary parameters
Number of steps:
 4
 5
 6
 7
 8
 Random
Range
Adjusts the range of the
frequency sweep.
Filter Types:
 Lowpass
 Bandpass
 Highpass
 Peaking

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8. Algorithms
ROSSIE
FILTER
8.3 Manual Filter
This mode offers a set of filters whose resonance frequency is manually controlled via a knob or
an expression pedal.
Taper:
 Taper 1
 Taper 2
 Taper 3
 Taper 4
Filter Types:
 Lowpass
 Bandpass
 Highpass
 Peaking
Q (filter bandwidth)
 Low
 Medium
 High
 Sharp
Higher setting gives more pronounced
filtering
PARAM knob - adjusts the resonance frequency of the filter.
RANGE knob - adjusts the amplitude of the steps.
MIX knob - adjusts the wet and dry mix.
Secondary parameters
Rossie as a Wah pedal
- Map the expression pedal to the frequency parameter (Param knob).
- Set the desired Heel and Toe values.
- Select filter type to Lowpass or Bandpass.
- Select one of the Taper styles to your liking.
TAPER 1
(linear)
TAPER 2
TAPER 3
TAPER 4
The potentiometers in wah pedals
have different taper characteris-
tics, which determines the feel as
the rocker sweeps through its
sweep range.
Rossie provides 4 different taper
styles to choose from. Choose one
that feels best for the application
at hand.

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Setting up the Heel and Toe values for expression pedal (and ramping function).
Suppose you want to map a parameter knob to the expression pedal or the ramping function :
 Turn the knob until you find the desired Heel value.
 Hold down the knob. After 2 seconds the screen will show the Heel / Toe information, keep
holding the knob down.
 Now turn the knob (while still holding it down) to find the desired Toe value. When you find
it, release the knob.
The parameter is now mapped to the expression pedal and ramping function. Rocking the ex-
pression pedal will sweep the mapped parameter to any value within the range specified by Heel
and Toe values.
The Toe value set using the above procedure will also be the “end value” for the Ramping function.
Heel position Toe position
Changes to the Heel and Toe values are automatically saved into the current preset.
ROSSIE
FILTER
9. Expression / Ramping Setup
Heel 20
Toe 80
Up to 3 primary parameters may be mapped to the expression pedal / ramping function.
Push the knob’s button to toggle the parameter mapping.
Exp Pedl
mapped
Exp Pedl
unmapped
PUSH once
PUSH once

Specifications :
 Input impedance : 1 MOhm.
 Output impedance : 1K Ohm.
 DAC / ADC resolution : 24 bits.
 Current consumption : ~110 mA.
 Weight : 0.6 Kg (1.6 lbs).
 Dimension : 12 (L) x 7.2 (W) x 5.5 (H) cm
 Power source : 9VDC (negative center).
Key Features :
 2 presets.
 3 select Filter algorithms.
 Mono input and output.
 Expression pedal and tap-tempo input.
 Momentary action supported.
Visit the product page at our website for more demo videos, sound clips, FAQs, and updates.
This product is designed and manufactured by :
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Email : [e-mail] (inquiry)
[email protected] (support)
Web : www.gfisystem.com
GFI System
ROSSIE
FILTER
10. Factory Reset
Turn the MODES knob to select No / Yes, then push the MODES button
to confirm - if you select Yes factory reset will be performed and the
pedal will then start as normal.
Press and hold the MODES button while powering up the pedal.
Keep holding until the screen reads: Reset?
NO YES