PreSonus StudioLive 24.4.2 - Manual (Page 13)

9
3 Hookup
3.1 Rear-Panel Connections
StudioLive™ 24.4.2/16.4.2
Owner’s Manual
3 Hookup
3.1 Rear-Panel Connections
Microphone Inputs. Your StudioLive is equipped with 24/16 PreSonus XMAX
microphone preamplifiers for use with all types of microphones. The XMAX
preamplifier has a Class A input buffer, followed by a dual-servo gain stage. This
arrangement results in ultra-low noise and wide gain control, allowing you to boost
signals without increasing unwanted background noise.
48-volt Phantom Power. The StudioLive provides 48V phantom power for the
microphone input on each channel. This feature can be individually enabled for each
channel using buttons on the top panel.
WARNING: Phantom power is required for condenser microphones but can
severely damage some dynamic mics, especially ribbon mics. Therefore, switch
phantom power off for all channels where it is not required.
Power User Tip: Dynamic microphones and ribbon microphones are generally
lower-output devices and require no external power source. The most important thing
to note about ribbon microphones is that they very rarely require phantom power.
In fact, unless a ribbon microphone calls specifically for phantom power, sending
phantom power to it can cause severe damage – probably beyond repair. Condenser
microphones are generally more sensitive than dynamic and ribbon microphones
and typically require external +48V phantom power. Always review your microphone’s
documentation to ascertain the manufacturer’s recommended operating practices.
XLR connector wiring for phantom power:
Pin 1 = GND Pin 2 = +48V Pin 3 = +48V
Line-level Inputs. Each channel of the StudioLive has a ¼ inch, balanced TRS
connection for line-level input. When these inputs are engaged, the microphone-
preamp circuit is bypassed. Typical examples of line-level connections are synthesizer
outputs, CD/DVD-player outputs, and (with exceptions) signal-processor inputs and
outputs.
Note: As with any mixer, plugging in a microphone or a line-level input device, or
turning phantom power on or off, will create a momentary spike in the audio
output of your StudioLive. Because of this, it is highly recommended that you mute or turn
down the channel trim before changing connections or turning phantom power on or off.
This simple step will add years to life of your audio equipment.