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Using Both USB Ports at the Same Time (For Mixers with 2USB ports Only) 
If you USB mixer has two USB jacks (like the DJ-10 USB, for example), you can attach a different computer to each 
USB Jack. Or, you can connect both jacks to a single computer. Each USB jack on the mixer will appear as a separate 
USB audio device to your computer. You can play two audio files simultaneously from one computer and send both of 
those audio streams to separate channels of your mixer by using two USB cables.   
If you do this, we suggest using one of the many commercially available software programs that support multiple sound 
cards. 
However, if you don’t have software like that, you can use two separate software media players instead. To do this you 
need to Start the first media player, then change the preferred Audio Device to the second USB port, then start your 
second media player. 
Note that some applications (like Windows Media Player) will not allow you to have multiple instances running 
simultaneously. When you try to open a second file, the first one will stop playing and the second file will be loaded. TO 
get around this, you can use different players to play the second file. For example, use Windows Media player to play 
channel 1, and Musicmatch Juke Box player for channel 2. 
Also, not all will “remember” what sound card they were using at the time of launch. 
Mac Connection 
1.  Turn on your computer and mixer. 
2.  Connect a USB cable from your mixer and to your computer’s USB port. 
3.  Click on the APPLE logo in the upper left corner of the screen. 
4.  Select “System preferences”. 
5.  Click on the “Sound” icon. 
6.  Select the “Output” box (or “Input” box if you want to record to your computer). 
7.  Adjust the volume and balance. 
Now, you’ll need to re-direct your system sound effects to your computer’s speakers so they won’t go through your 
mixer. It is easy to do that on a Mac. Here’s how: 
1.  Follow steps 1-4 above. 
2.  Click on the “Sound” icon. 
3.  Click on the “Sound Effects” box. 
4.  Choose “Play alers and sound effects through:” 
5.  Select” Internal Speakers”. 
Troubleshooting 
Problem: The computer did mot recognize and automatically install my miser. 
‧      The mixer is not turned on. Turn on your mixer. 
‧      The USB cable is not connected. Connect the USB cable to your computer and mixer. 
‧      You have already installed a USB Audio Device before. In that case, your mixer should work without any 
installation process. Just plug it in .You may have to change your computer’s Default Sound playback Device, 
however. 
‧      You don’t have the proper version of Windows or Mac OS. Make sure your OS is one that is compatible with this 
mixer. (For example, Windows 95 does not support USB, and will not work with this mixer). 
Problem: The recording quality is poor. 
‧      The word length and sample rate are not set to CD-quality in your recording software. Change the word length to 
16-bit and sample rate to 44.1kHz for CD-quality results. 
‧      The audio is distorting. Turn down the gain on your mixer to reduce the audio level. 
‧      The audio level is too low. Increase the level until you see activity in the meter LEDs. 
Problem: I’m trying to play one song into channel 1 and the other into channel 2, but they both bet mixed 
together into only one channel. 
‧      The Sound playback Device was not set properly for one of your audio applications. Close one of the playback 
applications, then change your preferred Sound playback Device as described above, then re-open the 
application. Note that this technique will not work with all media players like, for example, Real player. 
‧      Use a dedicated audio program that supports 2 sound cards. 
Problem: The sound is coming out of my computer speakers instead of going to my mixer. 
‧      The Sound playback Device was not properly set. Close your audio playback application, then change your 
preferred Sound Playback Device as described above, then re-open the application. 
Problem: My computer’s system sounds (beeps and bells) are going into my mixer. 
‧  The Sound Playback Device is still set to your mixer. Change the Preferred Sound playback Device as described 
above. 
‧   Silence your computer’s system sounds altogether by doing the following: Select Sounds and Audio Devices in the 
Control Panel and switch to the Sounds tab. Under Sound Scheme, Choose the No Sounds option and click OK. 
‧  If you have a Mac, you didn’t select “Play alerts and sound effects through Internal Speakers”. See the Mac setup 
section for how to do this.