Rear Panel Connections; Analog Inputs - PRESONUS StudioLive III Series Owner's Manual

3 Hookup
3.2

Rear Panel Connections

Rear Panel Connections
3.2

Analog Inputs

3.2.1
While the complement of analog I/O differs between the various StudioLive Series III
models, the function of each component is consistent across the mixer range.
Mic/Line Inputs. Each microphone input on the StudioLive Series III mixers is
supplied with a remote PreSonus XMAX microphone preamplifier, for use with all
types of microphones. The XMAX preamp features a Class A input buffer circuit,
followed by a dual-servo gain stage. This results in exceptionally low noise, and a
wide range of gain, allowing you to boost signals significantly without introducing
unwanted background noise.
It is important to note that the XMAX circuit is an analog design that is remotely
controlled digitally.
Each model is also equipped with a number of inputs that can also accept line-
level signals. These inputs use TRS-XLR combo jacks that can accept both XLR and
balanced or unbalanced 1/4" cables. The ¼-inch TRS connectors bypass the gain
stage and are scaled to accept line-level signals up to +18 dBu.
The StudioLive 64S features locking combo jacks. All other models are equipped with
standard combo connections.
Power User Tip: When the line inputs are engaged, the microphone preamp circuit is
bypassed completely, however, +20 dB of digital gain is available. Typical examples of
line-level connections are synthesizer outputs, signal processors, and stand-alone mic
preamps and channel strips. Use the output level control on your line-level device to
adjust its level.
Microphone Only Inputs. Every model StudioLive Series III mixer, except the
StudioLive 64S, is also provided with Microphone Only inputs. These inputs can only
be used with line level sources connected to a D.I. box.
48-volt Phantom Power. The StudioLive provides individually-switchable 48V
phantom power for each microphone input.
WARNING: Phantom power is required for condenser microphones and certain other
specialty microphones that contain active preamp circuitry. However, applying phantom
power to mics that don't require power can damage them (especially ribbon mics). Switch
phantom power off for all channels where it is not required.
XLR connector wiring for phantom power:
Pin 1 = GND Pin 2 = +48V
Note: As with many audio devices, plugging a microphone or line-level device, or
enabling/disabling phantom power can create a momentary noise spike in the audio
output of your StudioLive mixer. It is highly recommended that you mute or turn down a
channel's fader before changing connections or toggling phantom power on or off.
Aux Inputs. The StudioLive offers two balanced stereo auxiliary inputs.
While these line inputs are generally used as effects returns, they can also
be used for any line-level source (synthesizers, amp modelers, etc.). The
left input of each pair is normalled to the right input, so if you are
returning a mono signal to the mix, connect it to the left input, and the
signal will be routed to both sides of the mix.
Power User Tip: More information about using external effects processors
can be found in Section 5.2.3.
Pin 3 = +48V
StudioLive™ Series III
Owner's Manual
16