Pioneer Dj DDJ-FLX10 4-Channel DJ Controller for rekordbox and Serato DJ Pro (Black) - Manual (Page 51)

Part names and functions
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3 MASTER LEVEL knob
Adjusts the volume of the master output sound.
4 BOOTH LEVEL knob
Adjusts the volume of the sound output from the [BOOTH] output terminals.
5 CLIP indicator
Flashes when the output level is too high.
• Slow flashing: Occurs just before the distortion of sound begins.
• Fast flashing: Occurs when the sound is distorted.
6 Master level indicator
Indicates the volume of the master output sound.
7 TRIM knobs
Adjust the volume of each channel’s sound.
8 Channel level indicators
Indicate the volume of the sound of the respective channels before it passes
through the channel faders.
9 EQ (HI, MID, LOW) knobs
For EQ mode, increase or decrease the relevant frequency for each channel.
For Part ISO mode, adjust the volume of each part (Stem).
For rekordbox, adjust the volume of the INST part with the EQ
[HI] knob, the
Vocal part with the EQ [MID] knob, and the Drums part with the EQ [LOW]
knob.
• You can change the part to be adjusted by setting the [Preferences] >
[Extensions] > [TRACK SEPARATION] > [Layout] in rekordbox.
For Serato DJ Pro, adjust the volume of the Vocal Stem with the EQ [HI] knob,
the Bass and Melody Stems with the EQ [MID] knob, and the Drums Stem with
the EQ [LOW] knob.
For information on changing the mode, see: 11. Headphones CUE buttons
(channel)