Gemini G4V

Gemini G4V

The Gemini G4V is a 2 deck controller that supports 4 virtual decks, a 4 way mixer and has a built-in 4 channel USB soundcard.

This documentation is for the functionalities of the official controller (to be) included with Mixxx. For the documentation of the old controller available in the wiki, please use the Old Revisions button.

• Mixxx Forum Thread
• Manufacturer's product page
• Manufacturer's manual

Mixxx Sound Hardware Preferences

• Master output: channels 1-2
• Headphone output: channels 3-4

Mapping Description

Most of the board's controls work as described in the G4V's manual, with a few exceptions. Snapshots of the board's labeling from the Manual are included below:

Shift

• On each of the physical decks is a SHIFT button
• This button, when held, changes the behavior of various buttons on that deck, labeled under the respective button

Mixer

• In the middle of board, there are HIGH, MID, and LOW EQ, GAIN, and FILTER knobs for the individual virtual decks that work as normal
• The Master and Cue Mix knobs works as normal, with Cue Mix mapped to Pre/Main
• The Booth knobs affects the internal sound card

Crossfader

• The crossfader works as normal
• The numbered buttons on the sides of the crossfader change the orientation of the virtual decks with respect to the crossfader. If the right button is lit up, the orientation of the virtual deck is to the right of the crossfader, and vice versa for the left button. If neither the left nor the right button are lit up, the virtual deck is centered on the crossfader

Deck Select Buttons

• Just below the Tempo slider on either side of the board is a Deck Sel button (1|3 on the left and 2|4 on the right). These buttons toggle the controls on the board between the virtual decks.
• When the button is not lit, the first deck (1 on the left or 2 on the right) is the active virtual deck
• When the button is lit up, the second deck (3 on the left or 4 on the right) is the active virtual deck

Library controls

• The Back button toggles the Browse knob's control between the folders list and the track list in the library display
• The Browse knob scrolls up and down through the active list in the library display, if there is a track loaded in the preview deck it will move the play position back and forward
• Shift+Browse knob while the left panel is active expand and collapses the different folders
• Pressing the Browse knob while the track list is active will load the selected track in the preview deck and start playing in the headphone, if the preview deck is already loaded it will unload it
• The LOAD buttons at the top of the board load the selected track from the library into the respective virtual deck
• Pressing Shift+LOAD unloads the respective deck

Transport Controls

• The deck's Play/Pause, CUE, and SYNC buttons work as normal on the active virtual deck
• The deck's CUP buttons will start playback from the beginning of the track

Jog Wheels

• Pressing the top of the Jog Wheel will change the mode to vinyl mode. It will stop playing

   * Turning the jog wheel will move the track play head, for scratching or fine placement
   * Turning the jog wheel while pressing shift will change the track play head fast, for fast search
   * When the jog wheel top is released, the jog wheel will stay in vinyl mode until it stops moving, for spin backs or similar actions
   * If the deck was in slip mode before entering in vinyl mode, the play head will move to the position it wil have been if no manipulation happened, useful for scratching without loosing the beat
* Turning the jog wheel without pressing the top will temporarily change the tempo, for nudging

Performance Pads

 * Above the wheel on each deck is a set of 8 performance pads (top pads numbered 1-4 and bottom pads numbered 5-8 for the remainder of this wiki page)
 * The functionality of the performance pads is determined by the pads mode: Hot Cue, Auto Loop, Sample, Loop Roll, manual Loop and Beat Jump.
 * You can can change the mode by using the mode buttons as indicated.

Hot Cue Mode

• To enable Hot Cue mode, press the Hot Cue button
• When the performance pads are in Hot Cue mode, the Hot Cue button will be lit up
• Pressing a performance pad when in Hot Cue mode will control the corresponding numbered Hot Cue (Performance Pad 1 controls Hot Cue 1, etc) on the virtual deck
• If the corresponding Hot Cue isn't set, pressing the performance pad will set a hot cue at that point
• If the corresponding Hot Cue is set, pressing the performance pad will move playback to that hot cue
• If a hot cue is set and it's corresponding performance pad is pressed while the deck's Shift button is being held, the hot cue will be deleted

Sample Mode

• To enable Sample mode, press the Sample button
• When the performance pads are in Sample mode, the Sample button will be lit up
• It will show the sample decks if the skin has support for them
• The Sample button will be lit up if they have a track loaded
• Each deck control 8 samples, deck 1 controls samples 1 to 8, deck 2 controls samples 9 to 16, an so on
• The Sample Volume knobs control the volume for all the samples

Auto Loop Mode

• To enable looping mode, press the Auto Loop button
• When the performance pads are in Auto Loop mode, the Auto Loop button will be lit up
• Pressing a pad start a loop of the length indicated in the pad, the pad will lit up
• Pressing the lit pad stop the loop
• Pressing a different pad will stop the first pad and will start a new loop
• The Loop Move knob shifts the loop position in the virtual deck

Loop Roll Mode

• To enable loop roll mode, press the Loop Roll button
• When the performance pads are in Loop Roll mode, the Loop Roll button will be lit up
• Pressing a pad start a loop of the length indicated in the pad, the pad will lit up
• Pressing the lit pad stop the loop
• Pressing a different pad will stop the first pad and will start a new loop
• When a loop is started the deck will change to Slip mode, when the loop is stopped the track position will move to the position it will have been if the loop never happened
• The Loop Move knob shifts the loop position in the virtual deck

Manual Loop Mode

• To enable Manual Loop mode, press the Loop Roll button while holding the Shift button
• When the performance pads are in Manual Loop mode, the Loop Roll button will flash
• When a manual loop is set, all 8 performance pads are lit
• Performance pad 1 sets the loop IN point
• Performance pad 2 sets the loop OUT point
• Performance pads 3 and 4 enable and disable the loop once the IN and OUT points are set
• Performance pad 5 doubles the length of the loop
• Performance pad 6 halves the length of the loop
• Performance pad 7 moves the loop 1 beat backward
• Performance pad 8 moves the loop 1 beat forward

Beat Jump Mode

• To enable Beat Jump mode, press the Sample button while holding the Shift button
• When the performance pads are in Beat Jump mode, the Sample button will flash
• Pressing a pad jumps forward the number of beats indicated in the pad
• Pressing a pad while holding the Shift button jumps backward the number of beats indicated in the pad

FX and Effects

• Each virtual deck is assigned 1 Effect Unit, with the deck number being the same as the Effect Unit number
• Pressing the deck's FX ON/OFF button will enable/disable the Effect Unit corresponding to the virtual deck number
• The FX ON/OFF button is lit when the virtual deck's corresponding Effect Unit is enabled
• Holding Shift and pressing the FX Select button will scroll through the Effect Unit's effect chains
• The Par 1 and Par 2 knobs will change the first and second parameters, respectively, for the first effect in the Effect Unit's effect chain

Slip Mode

• The Slip button enables/disables slip mode on the virtual deck, the button will be lit up if Slip mode is on
• When releasing the jog wheel top after scratching will, the track play head will jump the the same position it was when the jog wheel top was pressed

Misc Controls

• The Keylock button enables/disables keylock on the virtual deck

Unused controls

Below is a list of controls on the board that currently do not have any functionality

• The Bank Up/Bank Down button
• The Scratch button