JK Audio Universal Host User Manual
Page 6

6
Connection (continued)
To connect Universal Host through a mixer—Mix Minus Setup
Number of microphones 
depends on mixer 
Connect Caller to any 
line level input on mixer 
Connect Aux (or FX) Send on 
mixer to Send 1 on Universal 
Host, Mic/Line button out (Line) 
Use Main Outputs, 
USB or Firewire 
connectors to 
send audio to 
recording device 
or broadcasting 
equipment inputs 
For whichever input channel you have the Caller connected to, turn the 
corresponding Aux control to minimum (usually hard left). All other Aux 
controls should be set for what you want to send to the phone line. Each 
Aux Send bus is completely separate from all other outputs, so these Aux 
controls will not affect what is heard on the Main outputs or on any other 
Aux buses. This Aux Send bus should be pre-fader, so you can use the 
fader controls to set the levels of each channel to the main output. 
11
FAQs
?
Why does my laptop only record half of the conversation? I
am using the Stereo output on the Universal Host and I 
have a stereo cable. 
!
Most laptop computers only have a mic input, which is mono.
You should use the USB connector instead for stereo operation.
?
How do I record onto my computer and edit the files?
!
If your computer does not already have something, you will
need to purchase or download any audio editing software of 
your choice to record and edit audio files. You may also need to 
adjust some settings in the audio configuration files on your 
computer or in your software to allow recording in stereo. 
?
Does Universal Host come with any Talk Show software?
!
No, our description "Turn your PBX into a low cost talk show
system" pertains to using a multi-line PBX phone system as a 
line selector switch. When the Universal Host is on line, simply 
select which phone line you want to talk to, either dropping the 
last caller, or putting them back on hold. 
?
Do I need any software drivers for the USB interface?
!
No, the USB interface is plug and play compatible.
?
Why is there a Send 2 mini-jack on the back of my Universal
Host?
!
This is a second line level input to Universal Host. Here you can
connect another device, such as a CD player or the output of 
your personal audio player to add audio to the conversation. 
This enables you to play background music or other sound bites 
during your discussion. Do not connect a microphone to this 
jack. This is a mono input. If you connect a stereo output here 
such as a Line Out from your audio player, you will receive only 
Left channel audio on this jack. 
?
Why is there a loud hum on the output of my Universal
Host, even when nothing else is connected?
!
Make certain you are using the regulated power supply that was
shipped with this unit. Power supplies are not all the same.
