Yamaha DJX-IIB - Manual (Page 23)

Chapter 2 Live Effector Basics
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15 Echo
Like Delay (in Tip 14 above), Echo produces repeats of the sound for rhythmic
effect. However, the CONTROL knob is used to change the number of repeats
(also called “feedback”). Naturally, the DJX-IIB automatically syncs this effect
to the bpm of the Pattern.
16 Lo-Fi
Need to grunge up your sound, but Distortion is too nasty for you? This useful
effect lets you slap that retro, lo-rez sound onto your beats — just like they do
in hip-hop, trip-hop and other styles. Lo-Fi gives the sound just a little bit of
“dirt” — and lets you add a vintage analog-like touch to your performance.
17 Wah
Wah is a special moving filter effect that gives a funky feel to the sound. Use
the CONTROL knob to change the speed of the filter motion. Setting this toward
the maximum produces a trembling sound.