Pioneer DDJ-FLX4

Pioneer DDJ-FLX4 (schematic view)

The Pioneer DDJ-FLX4 is a 2 deck USB controller with an integrated audio interface designed for rekordbox and Serato.

• Manufacturer’s Product Page

• Manufacturer’s User Manual

• Midi Mappings

• Hardware Diagram

• Mapping Forum Thread

Firmware

The mapping has been created on Firmware version 1.02

Compatibility

The Pioneer DDJ-FLX4 is USB audio and MIDI class compliant and works with Linux, Windows, and macOS without needing to install any drivers.

Audio Setup

Configure Mixxx’s sound hardware settings as follows:

Output	Channel
Master	1-2
Headphones	3-4

Muista

It is not possible to record or broadcast input sent from the 1/4” unbalanced TS microphone jack on the controller, as it is not routed back to the computer and cannot be configured as an input device.

Controller Mapping

The schematic drawings used here can be referenced in the manufacturer’s manual on the given page number.

Browser section (p. 12)

Pioneer DDJ-FLX4 (browser section)

No.	Control	Function
1	LOAD buttons	Load track selected in library into deck.
2	Rotary Selector	Press to toggle focus between the library sidebar and associated panels. Turn to move focus up or down.
2	SHIFT + Rotary Selector	Turn to zoom parallel waveform.

Deck sections (p. 15)

Pioneer DDJ-FLX4 (deck section)

No.	Control	Function
1	BEAT SYNC	Press to sync tempo to the other playing track. Hold to enable sync lock.
1	SHIFT + BEAT SYNC	Cycles through tempo ranges: +/-6%, +/-10%, +/-16%, +/-25%
2	CUE/LOOP CALL>	Doubles the current loop size.
2	SHIFT + CUE/LOOP CALL>	Jumps 32 beats forwards.
3	CUE/LOOP CALL<	Halves the current loop size.
3	SHIFT + CUE/LOOP CALL<	Jumps 32 beats backwards.
4	4BEAT/EXIT	Enables/disables currently set loop.
4	shift + 4BEAT/EXIT	Jump to loop start, enable loop, and stop playback.
5	OUT	Sets end of loop to the current playback position. If quantize is enabled, it is set to the closest beat. If held during an active loop, sets the new end point when released.
5	shift + OUT	When a loop is enabled, press to adjust the loop’s end position with the jog wheel.
6	IN	Sets start of loop to the current playback position. If quantize is enabled, it is set to the closest beat. If held during an active loop, sets the new start point when released.
6	shift + IN	When a loop is enabled, press to adjust the loop’s start position with the jog wheel.
7	Jog Wheel (top)	Scratch (move play position).
7	Jog Wheel (outer)	Nudge tempo up or down temporarily.
8	HOT CUE mode	Sets pads to hot cue mode.
9	PAD FX mode	Not implemented.
10	BEAT JUMP mode	Sets pads to beat jump mode.
10	SHIFT + BEAT LOOP mode	Sets pads to beat loop mode.
11	SAMPLER mode	Sets pads to sampler mode.
12	TEMPO slider	Adjust playback speed.
13	Performance pads	Functionality differs depending on the pad mode selected by 8-11.
14	PLAY/PAUSE	Play/pauses a track).
15	CUE	Behavior depends on the cue mode.
16	SHIFT	Used to access secondary functiones of other buttons while being pressed.

Pad Modes

The pad mode buttons change between different modes in which the performance pads operate. The main pad modes described below are similar to those found in rekordbox.

Muista

The secondary pad modes described in the manufacturer’s manual (KEYBOARD PAD FX1 PAD FX2 and KEYSHIFT) are not currently implemented by this mapping.

Hot Cue Mode

Bookmark positions in the track and jump to them.

Pioneer DDJ-FLX4 (hot cue pads)

No.	Control	Function
1-8	Pad (unlit)	Save current position as hot cue.
1-8	Pad (lit)	Jump to hot cue. If the track is stopped, holding the pad will preview the hot cue until the pad is released.
1-8	SHIFT + Pad (lit)	Clear hot cue.

Beat Loop Mode

Press a pad to enable a loop from the current position. Press the pad again to disable the loop. The size of the loop is assigned to the pads as follows:

Pioneer DDJ-FLX4 (beat loop sizes)

1/4 beat	1/2 beat	1 beat	2 beats
4 beats	8 beats	16 beats	32 beats

Beat Jump Mode

Press a pad to jump forwards or backwards by the number of beats assigned to the pads below.

Press SHIFT + pad 7 to decrease or SHIFT + pad 8 to increase the jump values by a factor of 16.

Pioneer DDJ-FLX4 (beat jump defaults)

1 beat back	1 beat forward	2 beats back	2 beats forward
4 beats back	4 beats forward	8 beats back	8 beats forward

Sampler Mode

Load and play samples from the library. The pads on decks 1 and 2 correspond to the first and second sampler rows in Mixxx respectively.

Pioneer DDJ-FLX4 (sampler pads)

No.	Control	Function
1-8	Pad (unlit)	Load sample selected in library.
1-8	Pad (lit)	Play a loaded sample. If the sample is already playing, playback starts from the beginning.
1-8	SHIFT + Pad (lit)	Stop a loaded sample from playing. If the sample is already stopped, unload it.

Mixer section (p. 25)

Pioneer DDJ-FLX4 (mixer section)

No.	Control	Function
1	TRIM	Adjusts deck prefader gain
2	MASTER	Adjusts master output (this is hardware implemented and is not mapped to the software gain in Mixxx).
3	MASTER CUE	Sends master output to headphones (this is hardware implemented and is not visible in the Mixxx interface).
4	EQs (LOW MID HIGH)	Boosts or cuts channel frequencies
5	MASTER	Microphone level. Works for microphones connected on the controller and through the controller’s line out.
6	Channel level indicators	Displays channel levels (before being sent through channel faders)
7	CFX	QuickEffect superknob (by default controls a Filter, but this can be changed in the preferences)
8	Smart CFX	Not implemented
9	Headphone CUE (Channel)	Turn on to output channel to headphones
9	SHIFT + Headphone CUE	Toggles quantize for the current channel
10	HEADPHONES MIXING	Adjusts between headphone CUE and MASTER levels sent to headphones
11	HEADPHONES LEVEL	Adjusts output level from PHONES jack
12	Channel fader	Adjusts channel levels output to master
13	Smart Fader	Not implemented
14	Crossfader	Fade between left and right channels

Effect section (p. 31)

Pioneer DDJ-FLX4 (effect section)

The BEAT FX controls above are mapped to Mixxx’s first effect unit as follows:

No.	Control	Function
1	Channel select switch	Route deck 1, deck 2 or both to effect unit 1
2	FX SELECT	Load next effect
2	SHIFT + FX SELECT	Load previous effect
3	BEAT <	Cycle effect focus leftward
4	BEAT >	Cycle effect focus rightward
5	LEVEL/DEPTH	Controls the wet/dry mix knob
5	SHIFT + LEVEL/DEPTH	Controls the metaknob of the currently focused effect
6	ON/OFF	Enable/disable the currently focused effect
6	SHIFT + ON/OFF	Disables all effects in the chain and kills the wet/dry mix

Muista

Soft takeover is enabled on the LEVEL/DEPTH knob to prevent sudden changes to the wet/dry mix or effect metaknob when changing between the two.