DJ Equipment

Decks, mixer, headphones — what they all do.

Two sources, one mixer, two outputs (room + headphones). Everything else is decoration.

+50 XP

// WHAT IT DOES

Every DJ setup is the same shape: two (or four) decks that play music, a mixer that blends them, a speaker output for the room, and a headphone output just for you.

The decks can be turntables, CDJs (Pioneer's CD/USB players), a DJ controller plugged into a laptop, or even just software with a keyboard. They all do the same job: play a track and let you start/stop/loop/cue it.

The mixer is the brain. Each deck plugs into a channel with its own volume, EQ (bass/mid/treble), and a button to it to your headphones. The between channels lets you fade A↔B with one slider.

Think of it like → A DJ setup is a kitchen with two stove burners (decks), a counter where you combine ingredients (mixer), a plate you serve from (master out) and a tasting spoon (headphones).

▸ WHY YOU CARE

• Once you know the layout, you can DJ on any gear in any club within 5 minutes.
• Knowing what each control does means you can fix problems live (a deck sounds bassy → cut the low EQ; a track is too loud → lower the channel gain, not the master).
• It's how you communicate with a sound engineer at a venue — 'no signal on channel 2' is faster than 'the music thing isn't working'.

// SEE & HEAR IT

No simulator for this mission — read & quiz only.

▸ HOW IT WORKS

▸ Signal flow — watch the dot

▸ SIGNAL FLOW

Glowing dot = your signal travelling through Live.

▸ LISTEN FOR

• Hum or buzz when nothing is playing — usually a ground loop, fix with a DI box or by plugging into the same circuit.
• (distorted peaks) — almost always a channel gain set too hot, not the master.
• One side of the stereo image missing — bad cable, or the channel pan is off-centre.

▸ WALKTHROUGH (5 steps)

1. DO: Trace the signal path on any DJ setup before you start: USB/deck → channel input → master out → speaker.
▸ LISTEN: If no sound, walk the path one stage at a time — the silence is always at one specific point in the chain.
2. DO: Plug headphones into the mixer (not the laptop or controller).
▸ LISTEN: Only the channel(s) with the Cue button lit will play in your phones — that's by design.
3. DO: Lower the master fader, then raise channel 1's gain until peaks reach -6 dB on the channel meter.
▸ LISTEN: This is — set channels first, then use the master fader for room volume.
4. DO: Switch the crossfader fully left, then fully right.
▸ LISTEN: Only the deck on that side plays. Centre = both. This is the most-broken control on rented gear, so check it.
5. DO: Find the booth output knob (separate from master) and the headphone mix knob (cue/master blend).
▸ LISTEN: Booth = your stage monitor. Cue mix = how much of the room you hear in your phones vs. the cued track.

▸ COMMON MISTAKES

✗ Touching the master fader to balance individual tracks. That's what channel gain and EQ are for.
✗ Using the booth and master at different volumes mid-set without rebalancing — what sounds full in the booth may be thin in the room.
✗ Wrapping a USB stick in keys/coins in your pocket — corrupted file systems are the #1 cause of CDJ no-shows.
✗ Bringing only one USB. Always carry two synced copies (rekordbox Sync Manager handles this).

// QUIZ (QUICK)

Question 1 / 40 correct

CDJs are

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