FAQ
- Q1 Can I change the functions of buttons and knobs to suit my preference?
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A1
Yes. The way to do this depends on which DJ application you're using.
■rekordbox for Mac/Windows
rekordbox has a MIDI Learn feature. You can use it to change the buttons or knobs that features are assigned to. For details, see the MIDI Learn Operation Guide [rekordbox.com].■rekordbox for iOS/Android
This isn't possible when using rekordbox for iOS/Android.■Serato DJ Lite
This isn't possible when using Serato DJ Lite.
You can do it when using Serato DJ Pro, but you'll need to buy a Serato DJ Pro license or take out a subscription for the software.Serato DJ Pro has a Remapping feature. You can use it to change the buttons or knobs that features are assigned to. For details, see the Serato DJ Pro software manual on the Serato website [serato.com].
Net Number : 15 - Q2 What's buffer size and how can I adjust it?
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A2
The buffer size setting is a detailed setting related to audio transmission.
When you hear sound cuts or delays in operation, you can solve the issue by adjusting the buffer size. The larger the value of [Sample], the less likely you’ll hear sound cuts etc. The smaller the value is, the less likely you’ll experience delays in operation.If you experience issues such as sound cuts, set the buffer size to a large value such as 1024 samples. Next, play a track and check it no longer cuts out. Then, change to a low value and use the unit. Repeat these steps until the sound cuts stop and you don't experience a delay in operation.
The process for adjusting buffer size depends on which DJ application you use.
■rekordbox for Mac/Windows
Adjust buffer size in rekordbox [Preferences] > [Audio] > [Buffer size].
(Windows users, click [Setting Utility] in the same window and adjust it on the [ASIO] tab.)■rekordbox for iOS
There is no audio buffer size setting in rekordbox for iOS.■Serato DJ Lite
Adjust buffer size in Serato DJ Lite [Setup] > [Audio] > [USB buffer size].*The best value to set depends on your system specification.
*You don’t need to adjust buffer size if you’re not experiencing a particular problem.Net Number : 16 - Q3 Is there a way to prevent the PC/Mac error sound from being heard?
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A3
Yes.
You can change the PC/Mac sound setting so you won’t hear the error sound.■ Windows
Go to [Control Panel] > [Sound] > [Program Events] and turn off all sound settings.■ Mac
Open System Preferences > Sound Panel > Sound Effects and change the device to something other than the DDJ-FLX4.Net Number : 17 - Q4 I want to use the unit with a DJ application other than rekordbox or Serato DJ Lite by assigning MIDI. Where can I find the Midi code sent from the unit when I use each button or knob?
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A4
See the MIDI message list [here].
Net Number : 18 - Q5 When my PC/Mac or mobile device enters standby mode or sleep mode then returns to normal, is it OK to use it?
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A5
After your PC/Mac or mobile device returns from standby or sleep mode, be sure to reconnect the unit and restart your DJ application before using it.
We don’t guarantee stable operation when your PC/Mac or mobile device has recovered from standby or sleep mode.Net Number : 48