Numark Scratch

The Numark Scratch is a 24-bit 2 channel mixer designed for the scratch DJ. It’s equipped with an InnoFader crossfader and 8 performance pads across 3 modes, and 6 dedicated software FX selectors with dual toggle triggers. The Scratch is DVS ready under Mixxx

Novo na versão 2.4.0.

Drivers

You can download the latest Windows driver from the manufacturer’s website. The Scratch is class complaint on Mac and Linux.

Audio Setup

The mapping relies on the following channel assignments:

Output Channels	Assigned to
1-2	Master
3-4	Headphones

Input Channels	Assigned to
1-2 (CH 1 Line/Phono)	Vinyl Control 1
3-4 (CH 2 Line/Phono)	Vinyl Control 2
5-6 (Mix)	Record/Broadcast

The microphone, and external inputs are mixed together in input channels 5-6, so Mixxx can record and broadcast them.

The knobs for MASTER, BOOTH, MIC LEVEL, MIC TONE and CUE GAIN are controlling the hardware mixer of the built-in audio interface. Hence, turning the knobs will not change values in the Mixxx GUI and you’ll need to set the Mixxx knobs to their default values when using the controller:

Set the master/booth/headphones/microphone levels to 100% (knob center position)

Nota

The PC / LINE/PHONO switches work only if the Vinyl Control input channels are assigned to software inputs. So even if you do not intend to use timecode vinyl but want to pass through line or phono inputs directly to the left/right deck, you need assign these channels in the Sound Hardware preferences.

Controller Mapping

Schematic

No.	Control	Function
1	CHANNEL EQ/GAIN	Adjust volume & the high / mid / low EQs per channel
2	BOOTH	Adjust Booth output level
3	MASTER	Adjust Master output level
4	LINE/PHONO & PC	Toggle between LINE / PHONO or PC per channel
5	CUE MIX	Adjust monitoring between CUE and PGM
6	CUE GAIN	Adjust CUE level
7	FX DRY / WET	Adjust FX wet/dry depth
7	SHIFT DRY / WET	Adjust the metaknob for all effects in the chain.
8	FX SELECT	Toggle single FX
8	SHIFT + FX SELECT	Toggle multiple FX selections at the same time
9	FX HOLD / ON paddle	Push up to toggle FX on or push down to toggle FX momentarily
10	CUE	Press to cue channel for monitoring in headphones
11	SHIFT	Used with other controls that have SHIFT modifier function
12	CROSSFADER	Crossfade audio between channel 1/2
13	X-FADER REVERSE & SLOPE	Toggle crossfader reverse, & adjust between crossfader curves
14	CHANNEL FADER	Adjust per channel volume
15	PERFORMANCE PADS	SEE PERFORMANCE PADS SECTION FOR MORE INFO
16	LOOP -/+	Turn right/left to increase/decrease loop size, press in to toggle loop on/off
16	SHIFT + LOOP -/+	Turn for Library scroll, press in to load selected track to deck, double press to load instant double
17	FILTER	Adjust hardware Filter per channel
18	MIC TONE & MIC level	Adjust microphone tone & level

Performance Pads

To change modes, press the PAD MODE button repeatedly, which will cycle through the available pade modes, which are as follows:

CUE mode: Pads 1-4 trigger the respective hotcues, and if no hotcue point is set on that pad, will set a Cue point in the respective pad/slot. Holding SHIFT while pressing a pad will clear the Cue point from that pad.

SAMPLER mode: Press pads 1-4 to trigger samples loaded into the sample slot. Hold SHIFT while pressing a pad to stop the sample playback once triggered.

ROLL mode: In this mode holding pads 1-4 activates a loop roll of varying sizes. Release the pad to exit the loop roll.

Mapping options

There are various options that can be used to change some of the mixer’s behavior. Settings can be edited in the preference windows, under Preferences > Controllers > Numark Scratch.

Setting	Variable value	Default	Range	Description
Invert the Loop Encoder functionality	invertLoopEncoderFunction	false	true/false	By default the Encoder manages looping and Shift + Encoder scrolls the library/loads track. If this setting is set to true, the Encoder scrolls the library/loads track and Shift + Encoder manages looping.
Keep pads and buttons dimmed when off	InactiveLightsAlwaysBacklit	true	true/false	Having this setting on will keep LED always dimmed, even when off. Note the PAD MODE and CUE buttons are hardware controlled and always dim when inactive.
Set the predefined size to use for the Roll mode	BeatLoopRollSize	1/4,1/2,1,2	range 1/32..8	Define the size of loops for each of the deck pads, from left to right.