Focusrite Platinum OctoPre Handleiding

Focusrite Niet gecategoriseerd Platinum OctoPre

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Pagina 1/60
ENGLISH
1
CONTENTS
CONTENTS.................................................................................................................1
IMPORTANT SAFETY INSTRUCTIONS ..............................................................1
INTRODUCTION......................................................................................................2
REAR PANEL CONNECTIONS ..............................................................................2
GETTING STARTED .................................................................................................3
TIPS FOR OBTAINING A GOOD QUALITY VOCAL SOUND ......................... 3
TIPS FOR OBTAINING A GOOD QUALITY ELECTRIC GUITAR SOUND..4
FACILITIES AND CONTROLS ................................................................................ 4
DIGITAL OUTPUT OPTIONS .................................................................................6
DIGITAL OUTPUT FRONT PANEL CONTROLS...............................................6
DIGITAL OUTPUT REAR PANEL CONNECTIONS AND SWITCHES...........7
A BEGINNER’S GUIDE TO COMPRESSION ....................................................... 8
FREQUENTLY ASKED QUESTIONS .....................................................................9
TROUBLESHOOTING 10............................................................................................
CONTACTING US 10...................................................................................................
SPECIFICATIONS 11.....................................................................................................
DISTRIBUTOR LIST 60................................................................................................
IMPORTANT SAFETY INSTRUCTIONS
Please read all of these instructions and save them for future reference. Follow all warnings and
instructions marked on the unit.
• Do not obstruct air vents in the rear panel. Do not insert objects through any apertures.
• Do not use a damaged or frayed power cord.
• Unplug the unit before cleaning. Clean with a damp cloth only. Do not spill liquid on the
unit.
• Ensure adequate airow around the unit to prevent overheating. We recommend
leaving a blank 1U panel above the unit to aid ventilation.
• Unplug the unit and refer servicing to qualied service personnel under the following
conditions: If the power cord or plug is damaged; if liquid has entered the unit; if the unit
has been dropped or the case damaged; if the unit does not operate normally or exhibits a
distinct change in performance. Adjust only those controls that are covered by the
operating instructions.
• Do not defeat the safety purpose of the polarised or grounding-type plug. A polarised plug
has two blades with one wider than the other. A grounding type plug has two blades and a
third grounding prong. The wider blade or the third prong is provided for your safety.
When the plug provided does not t into your outlet, consult an electrician for
replacement of the obsolete outlet.
WARNING: THIS UNIT MUST BE EARTHED BY THE POWER CORD.
UNDER NO CIRCUMSTANCES SHOULD THE MAINS EARTH BE
DISCONNECTED FROM THE MAINS LEAD.
This unit is supplied pre-congured to operate only at the voltage indicated on the rear panel.
Ensure correct mains voltage is available and the correct fuse value is tted before connecting to
the mains supply. To avoid the risk of re, replace the mains fuse only with the correct value
fuse, as marked on the rear panel. The internal power supply unit contains no user serviceable
parts. Refer all servicing to a qualied service engineer, through the appropriate Focusrite dealer.
RACK VENTILATION: PLEASE ENSURE THE OCTOPRE IS PLACED
TOWARDS THE BOTTOM OF YOUR EQUIPMENT RACK, WITH
SUFFICIENT SPACE ABOVE AND BELOW FOR VENTILATION.
ENGLISH
2
INTRODUCTION
The OctoPre is an eight channel Class A microphone preamplier, featuring a classic
Focusrite mic pre and a revolutionary compressor/limiter circuit on each channel. As
well as eight analogue outputs, there is a choice of two optional 8-channel, 24 bit / 96
kHz A/D boards for connection to any digital audio workstation or digital console.
The mic pres featured in the OctoPre are similar to those featured elsewhere in the
award winning Focusrite Platinum range. They are a transistor-based Class A design
utilising the same full bandwidth philosophy as the legendary Focusrite Red and ISA
mic pres, ensuring detail and organic clarity without obvious colouration.
The revolutionary compressor/limiter circuit provides each channel with warm-
sounding compression, which morphs into brick wall limiting to avoid critical ‘overs’
when recording digitally.
The rst two channels also feature phase reverse, as well as unbalanced 1/4” jack inputs
on the front fascia for quick and easy, DI-free plug-in of guitars and basses.
With Class A Focusrite analogue signal processing and comprehensive A/D interface
options, OctoPre is the perfect partner for a Pro Tools™ system or any other digital
audio workstation, making high quality, multi-channel recording easy. Equally, it
could be utilised as part of a compact multi-channel location recording solution (with a
laptop or ADAT™, for example), or as an additional set of professional-quality mic
pres for any analogue or digital console or hard disk recorder.
REAR PANEL CONNECTIONS
The OctoPre features eight microphone inputs on rear-panel XLR connectors.
Channels 1 and 2 each feature an unbalanced 1/4” jack instrument input on the front
fascia. Eight line level balanced (+4 dBu) analogue inputs and outputs are provided via
25-pin D-type connectors.
These D-type connectors may be routed to 8 XLRs by means of an 8-way 25-pin D-
type to 8 XLR breakout cable, available from your local dealer, or in the UK from
Studiospares (tel +44 (0)20 7482 1692):
Line output – stock number 573-610
Line input – stock number 573-630
Hosa manufacture suitable cables as follows:
Line output – DTM 805
Line input – DTF 805
The pin-out of the 25-pin D-type connectors follows the typical ‘TDIF’ format. For
details of the digital output options, please see the ‘Digital Output Options’ section on
page 6.
ENGLISH
3
GETTING STARTED
1. Ensure that nothing other than the mains supply is connected to your OctoPre,
then switch it on via the POWER switch on the right hand side of the unit. If
your unit is permanently connected to a patchbay, ensure audio is not being fed to
any connected speakers to avoid any turn-on speaker pops.
2. Connect the analogue line outputs of the OctoPre to your recorder or audio
interface (via the 25-pin D-type connector on the rear panel). If using a digital
output option, connect the appropriate digital output to the digital input of your
recorder or audio interface. See page 6 for more information on the OctoPre
digital output options.
3. Ensure that each channel’s LEVEL and DYNAMICS controls are set fully anti-
clockwise.
4. Connect your inputs to the eight channels as required. Microphones should be
plugged into the XLR MIC INPUTS on the rear panel. If you wish to connect
line-level sources (to use the OctoPre’s dynamics processing when mixing down,
for example) connect these to the LINE INPUTS via the upper 25-pin D-type
connector on the rear panel. You may connect an electric guitar or bass to the
INSTRUMENT INPUTS on channels 1 and 2 via the unbalanced 1/4” jack
inputs on the front fascia.
5. Check that the correct input is selected on each of the OctoPre’s eight channels. If
recording a line level source connected to the rear panel LINE INPUTS via the
25-pin D-type connector, ensure the LINE switch is engaged. If using the
INSTRUMENT INPUT on channels 1 and 2, ensure the INST switch is
engaged. If a microphone is connected to a channel’s rear panel MIC INPUT,
ensure that channel’s LINE switch is disengaged.
6. If using a condenser microphone that requires phantom power, switch the
channel’s +48V in. If you are unsure whether your microphone requires this
phantom power, refer to its user guide, as phantom power will damage some
microphones, most notably ribbon microphones.
7. Increase the LEVEL control for each channel you wish to use, ensuring that the
green SIG LED is always illuminated, and that the red O/L LED does not
illuminate, except occasionally and briey when the loudest signal is present.
8. If using microphones, ensure that the microphone placement is at its best. Before
you start recording, alter the microphone placement until you get as close as
possible to the sound you want. Note that moving the microphone may have an
eect on the level of the signal entering the OctoPre, requiring an alteration to
the LEVEL setting.
9. If required, add compression using the DYNAMICS control. Increasing this
control increases the amount of compression. The yellow COMP LED will light
when compression is being applied, and the red LIM LED will light when the
limiter is active. For more information on the DYNAMICS control please see
page 5.
TIPS FOR OBTAINING A GOOD QUALITY VOCAL
SOUND
MICROPHONE POSITIONING
Recording vocals requires a dierent technique to that used when singing on stage,
where the vocalist usually sings with the microphone touching his or her lips - in a
studio recording situation it is usually desirable for the vocalist to be at least 50 cm
away from the microphone. If this aects the vocal performance (or if the vocal sounds
weak), allow the vocalist to move closer to the microphone, but use a pop shield on
the mic. It may also be necessary to use the OctoPre’s High Pass Filter to remove
excessive bass tip-up caused by singing very close to the microphone (the so-called
‘proximity eect’).
USING THE DYNAMICS CONTROL
If the vocalist is having diculty staying a consistent distance from the microphone,
the recorded performance will get softer and louder as the distance from the mic varies.
The vocalist may also vary the volume of their performance to such an extent that
when they are singing loudly, the vocal is far too dominant, and when they are singing
quietly, the vocal is lost in the mix. To even out these variations, use the DYNAMICS
control to compress the vocal signal. Always start with the control fully anti-clockwise
and gradually increase it, listening carefully to the results as you go. Remember that it’s
much easier to add more compression after the vocal is recorded, than to remove it if
too much is applied!

Product specificaties

Merk: Focusrite
Categorie: Niet gecategoriseerd
Model: Platinum OctoPre

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