Owner’s Manual
Complete reCording solution
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IMPORTANT SAFETY INSTRUCTIONS
ELECTROMAGNETIC
COMPATIBILITY
DECLARATION OF
CONFORMITY
This unit conforms to the Product
Specifications noted on the Declaration
of Conformity. Operation is subject
to the following two conditions:
manufacturer’s Name: Lexicon Professional
manufacturer’s Address: 8760 S. Sandy Pkwy.
Sandy, UT 84070, USA
Declares that the product:
Product name:
Note:
Lexicon Alpha™
Product name may be
suffixed by the letters-EU.
•
this device may not cause harmful
interference, and
•
this device must accept any interference
Product option:
None
received, including interference that may
cause undesired operation.
Conforms to the following Product Specifications:
Safety:
IEC 60065 (2002)
Operation of this unit within significant
electromagnetic fields should be avoided.
EmC:
EN 55013 (2001 + A1)
EN 55020 (1998)
•
use only shielded interconnecting cables.
Supplementary Information:
The product herewith complies with the requirements
of the Low voltage Directive 72/23/EEC and the
EmC Directive 89/336/EEC as amended by Directive
93/68/EEC.
U.K. MAINS PLUG WARNING
vice-President
of Engineering - mI
A molded mains plug that has been cut off
from the cord is unsafe. Discard the mains
plug at a suitable disposal facility.
NEVER UNDER ANY
8760 S. Sandy Parkway
Sandy, Utah 84070, USA
Date: February 2, 2006
CIRCUMSTANCES SHOULD YOU
INSERT A DAMAGED OR CUT
MAINS PLUG INTO A 13 AMP
POWER SOCKET.
European Contact:
Your local Lexicon
Professional Sales
and Service Office or
harman music Group
8760 S. Sandy Pkwy.
Sandy, UT 84070 USA
Ph: (801) 566-8800
Fax: (801) 568-7583
Do not use the mains plug without the fuse
cover in place. Replacement fuse covers
can be obtained from your local retailer.
Replacement fuses are 13 amps and mUST
be ASTA approved to BS1362.
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Service Info/Warranty
SERvICE INFO
If you require technical support, contact Lexicon® Professional Customer Service.
Be prepared to accurately describe the problem. Know the serial number of your unit,
found on a sticker attached to the bottom of the Alpha Studio™. If you have not already
taken the time to fill out your warranty registration card and send it in, please do so
now.
Before you return a product to the factory for service, we recommend you refer to
the manual. Make sure you have correctly followed installation steps and operation
procedures. If you are still unable to solve a problem, contact our Customer Service
Department at (801) 568-7660 for consultation. If you need to return a product
to the factory for service, you MUST contact Customer Service to obtain a Return
Authorization Number. No returned products will be accepted at the factory without a
Return Authorization Number. Please refer to the Warranty information on the follow-
ing page, which extends to the first end-user. After expiration of the warranty, a reason-
able charge will be made for parts, labor, and packing if you choose to use the factory
service facility. In all cases, you are responsible for transportation charges to the fac-
tory. Lexicon Professional will pay return shipping if the unit is still under warranty.
Use the original packing material if it is available. Mark the package with the name
of the shipper and with these words in red: DELICATE INSTRUMENT, FRAGILE! Insure
the package properly. Ship prepaid, not collect. Do not ship parcel post.
WARRANTY
This warranty is valid only for the original purchaser and only in the United States.
1. The warranty registration card that accompanies this product must be mailed (or
purchase date to validate this warranty. Proof-of-purchase is considered to be the
burden of the consumer.
2. Lexicon Professional warrants this product, when bought and used solely within
the U.S., to be free from defects in materials and workmanship under normal use
and service.
3. Lexicon Professional’s liability under this warranty is limited to repairing or, at
our discretion, replacing defective materials that show evidence of defect, provided
the product is returned to Lexicon Professional WITH RETURN AUTHORIZATION
from the factory, where all parts and labor will be covered up to a period of 1 year.
A Return Authorization number must be obtained from Lexicon Professional by
telephone. The company shall not be liable for any consequential damage as
a result of the product's use in any circuit or assembly.
4. Lexicon Professional reserves the right to make changes in design or make addi-
tions to or improvements upon this product without incurring any obligation to
install the same additions or improvements on products previously manufactured.
5. The foregoing is in lieu of all other warranties, expressed or implied, and Lexicon
Professional neither assumes nor authorizes any person to assume on its behalf any
obligation or liability in connection with the sale of this product. In no event shall
Lexicon Professional or its dealers be liable for special or consequential damages or
from any delay in the performance of this warranty due to causes beyond its control.
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Table of Contents
TAblE OF CONTENTS
INTROdUCTION......................................... 8
FEATURES..................................................................................8
UNPACKING THE ALPHA STUDIOTM .............................................9
COMPUTER MINIMUM REqUIREMENTS ......................................9
Windows® ............................................................................................................. 9
®............................................................................................................ 9
Macintosh
THE FRONT PANEL.....................................................................10
¼" Instrument Input Jack..................................................................................... 10
Line 1/Inst.............................................................................................................. 10
Peak LEDs.............................................................................................................. 10
Line 2/Mic.............................................................................................................. 10
Monitor Assign....................................................................................................... 10
Monitor Mix .......................................................................................................... 10
USB LED................................................................................................................. 11
Output Level........................................................................................................... 11
1⁄8" Headphone Output Jack .................................................................................. 11
THE REAR PANEL .......................................................................12
USB Port ................................................................................................................ 12
Line In 1-2............................................................................................................. 12
Mic 1 Input ............................................................................................................ 12
¼" Left/Right Line Outputs................................................................................... 12
CONNECTINg TO ThE AlPhA STUdIO ........ 13
MONITORING CONNECTIONS...................................................13
Connecting Headphones........................................................................................ 13
Connecting to Monitor Speakers........................................................................... 13
Connecting RCA Ouptuts for Monitoring to a Home Stereo................................ 13
ABOUT RECORDING CONNECTIONS..........................................14
To Connect a Microphone..................................................................................... 14
To Connect a Line Level Source............................................................................ 14
To Connect an Instrument.................................................................................... 14
MIxDOWN CONNECTIONS .......................................................15
Connecting to an External Recorder .................................................................... 15
®
Mixing Within Cubase LE ................................................................................... 15
WINDOWS® SOFTWARE SETUP..................................................16
®
Windows XP ......................................................................................................... 16
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Table of Contents
MACINTOSH® SOFTWARE SETUP ...............................................17
Mac OS................................................................................................................... 17
®
USINg ThE lExICON AlPhA STUdIO™...... 18
Section I – Recording Audio With the Alpha Studio™ ...................................... 19
A. Recording Using the Microphone/Line Input........................................... 19
B. Recording a Guitar using the Instrument Input ..................................... 26
Section II – Using Software Input Monitoring .................................................... 28
Section III – Adjusting the Buffer Settings........................................................... 31
A. Adjusting the Buffers in Windows® XP .................................................... 31
B. Adjusting the Buffers in Mac OSX............................................................ 32
SPECIFICATIONS ........................................ 34
SIgNAl ROUTINg dIAgRAM ..................... 35
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Introduction
INTROdUCTION
Congratulations on your purchase of the Lexicon® Alpha Desktop Recording
Studio™. The Alpha Studio is a complete package of hardware and software that turns
your USB-equipped computer into a professional multitrack recording workstation.
Whether you use it for high-quality stereo location recording with a laptop computer,
or for multitrack overdubbing and mixing in a home studio desktop system, the Alpha
Studio hardware provides the professional-quality inputs and outputs, metering, and
level controls that computer sound cards or built-in audio connections lack.
So you can make full use of the Alpha Studio right away, we’ve included the popular
Steinberg® Cubase® LE production suite software for PC and Mac® computers. Cubase
LE offers integrated multi-track recording, editing and mixing of up to 48 audio tracks,
64 MIDI tracks, VST® Instruments support, VST plug-in effects support, and an array of
additional features. Lexicon’s Pantheon™ VST reverb plug-in is a major feature of the
Alpha Studio package, providing the lush Lexicon reverbs that have been used on pro-
fessional recordings for over thirty years. Alternatively, the Lexicon Alpha Studio may
be used as an interface with almost any other major audio recording software you may
have, such as Steinberg Nuendo®, Cubase SX®, MOTU® Digital Performer®, Garage
Band®, Cakewalk® Sonar™, and many others.
FEATURES
THE ALPHA DESKTOP RECORDING STUDIO™
PROvIDES THE FOLLOWING:
•
4 analog audio inputs
•
•
•
1 - XLR mic input with extremely low noise preamp and 50 dB gain
2 - ¼" analog RF filtered TRS active-balanced line inputs
1 - ¼" high-impedance analog instrument input
•
•
•
•
•
2 - RCA outputs
2 - ¼" analog TRS active line outputs
High powered headphone amplifier
24-bit A/D and D/A converters, supporting sample rates of 44.1 kHz and 48 kHz
Zero-latency analog record monitoring with adjustable balance between
Direct and Playback Signals
•
•
Stereo and Mono input source monitoring
100% USB Powered
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Unpacking the Alpha StudioTM
UNPACkINg ThE AlPhA STUdIO™
The Alpha Studio™ is shipped in one carton, containing the Alpha Studio Interface
hardware, Steinberg® Cubase® LE and Lexicon® Pantheon™ plug-in software for
Windows® and Macintosh® based systems. After unpacking, save all the packaging
materials in case you ever have to ship the unit. Thoroughly inspect the Alpha Studio
and packing materials for signs of damage. Report any shipment damage to the carrier
that delivered the product or dealer from whom you purchased the product at once.
THE FOLLOWING ITEMS ARE INCLUDED:
•
•
Alpha desktop audio interface hardware
Installer CD-ROM containing Cubase LE Recording Software, USB drivers
and the Lexicon Pantheon Reverb Plug-in for Mac® and Windows®
USB Connector Cable
This Owner’s Manual
Lexicon Pantheon Reverb Plug-in User’s Guide
Lexicon Professional warranty registration
•
•
•
•
NOTE: The full Cubase LE manual is located “online” on the software CD
COMPUTER MINIMUM REqUIREMENTS
Powerful software for audio recording requires a powerful computer with the right
operating system software, processor, memory, and hard drive space. Most computers
currently sold already meet these requirements, or can be upgraded to be compatible
with the Lexicon Alpha Desktop Recording Studio. As with all such systems, adding more
RAM than the minimum will allow you to do more processing and improve perfor-
mance, and more disk space will allow you to record more tracks for a longer time. See
the Alpha Studio Software Installation Guide and the Cubase LE manual on the software
installation CD for more information.
WINDOWS®
•
Pentium® III 500 MHz or AMD K7 processor, or better
(Pentium 4/Athlon 1 GHz or faster recommended)
Windows XP Home or XP Professional
256 MB RAM (512 MB recommended)
1 GB of available hard disk space
•
•
•
•
7200RPM hard disk type or better
MACINTOSH®
•
•
•
•
•
Power PC®, G4 Processor (450 MHz or faster)
Mac OS X version 10.2.8 or higher
256 MB RAM minimum (512MB recommended)
1 GB available hard disk space
7200RPM hard disk type or better
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The Front Panel
Line 1 / Instrument
Line 1/Inst
Line 2 / Microphone
Line 2/Mic
Monitor Mix Control Output Level
Monitor Mix
Output Level
Instrument
Monitor
Stereo
Mono
Peak
Peak
USB
Direct
Playback
1/4˝ Instrument Input Jack
Peak LEDs
Monitor Assign
1/8˝ Headphone Output Jack
ThE FRONT PANEl
The Alpha Studio™ front panel offers the following features:
¼" INSTRUMENT INPUT JACK
This ¼" jack accepts unbalanced, low-level, high impedance instrument sources such
as electric guitar, acoustic guitar with a pickup, and electric bass. The input gain
is adjusted using the Line 1/Inst knob on the front panel. When an instrument is
plugged into this input, it disables the Line 1 audio input on the rear panel.
LINE 1/INST
This knob adjusts the Line 1 and Instrument Input gain.
PEAK LEDS
These LEDs light when the input signal is within 5dB of analog clipping. If the Peak
LEDs flicker occasionally, the signal is approaching clipping levels, but does not neces-
sarily indicate distortion or actual clipping.
For the cleanest
recording, adjust
the Gain so the
Peak LED flashes
only occasionally,
on the loudest part
of the perfor-
LINE 2/MIC
This knob adjusts the Line 2 and Mic Input gain.
MONITOR ASSIGN
This button selects whether a pair of analog audio sources will be heard in stereo or
mono in the Direct Monitor Mix. In Stereo mode, the left inputs (Line 1/Inst) are rout-
ed to the left channel and right inputs (Line 2/Mic) are routed to the right channel.
mance.
In Mono mode, you’ll hear all inputs in the center of the Direct Monitor Mix through
the Headphone or Line outputs.
DO NOT TURN
DOWN A GAIN
CONTROL TO
GET THE RIGHT
MIX IN YOUR
HEADPHONES OR
MONITORS WHILE
RECORDING. USE
THE Monitor
Mix CONTROL
FOR THIS
When the Monitor switch is in Mono, it does not change the signals going to the com-
puter in any way—they will still be separate and stereo in the computer.
MONITOR MIx
The Alpha Studio gives you the ability to hear your analog input signals directly and
immediately while recording, without having to adjust levels in software, and before
the delay caused by digital converters and computer recording latency. This zero-laten-
cy analog monitoring is controlled by the Monitor Mix knob, which you can use to
adjust the blend between the Alpha Studio’s live analog inputs (called “Direct”) and
any audio coming back from the computer via USB (“Playback”). To adjust the play-
back mix coming back from the computer (previous tracks, effect returns etc.), use
PURPOSE.
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The Front Panel
the faders on the Mixer screen of the software. To hear only the live source input sig-
nals plugged into the Alpha StudioTM, turn the Monitor Mix knob fully left to Direct.
To hear only the mix from the computer, turn the Monitor Mix knob fully right to
Playback. The output from the Monitor Mix control is routed directly to the Line and
Headphone outputs. This ability to easily control the relative levels of computer audio
playback and latency-free live analog inputs is very useful when overdubbing.
USB LED
When the blue USB LED is on, it indicates the Alpha Studio is being powered by your
computer and audio signals can pass in and out of the system.
OUTPUT LEvEL
This knob controls the overall output level of the Alpha Studio’s Line and Headphone
outputs.
1⁄8" HEADPHONE OUTPUT JACK
The high powered Headphone output accommodates stereo headphones with an 1⁄8"
stereo plug.
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The Rear Panel
USB Port
Mic Input
RCA Left/Right Line Outputs
Line In
Line Out
Line Out
1
2
L
R
L
R
Alpha Studio is
trademark of
Lexicon Pro, Inc.
Mic
a
Line In 1-2
1/4” Left/Right Line Outputs
ThE REAR PANEl
The Alpha Studio™ rear panel offers the following features:
USB PORT
The USB Port is used to connect the Alpha Studio to your computer and provides the
Alpha Studio hardware with power. A standard USB cable is included. The Alpha Studio
supports USB 2.0 full speed.
LINE IN 1-2
These ¼" inputs can accept both balanced (3-conductor TRS) and unbalanced (2-
conductor TS) line level audio sources. The input gain is adjusted using the Line
1/Inst and Line2/Mic gain knobs on the front panel.
Note: When a cable is connected to the Line 2 input, the Mic input is disabled.
MIC INPUT
This balanced XLR input features a high-quality mic preamp designed specifically for
low-impedance professional dynamic and self-powered condenser microphones. The
input gain is adjusted using the Line 2/Mic gain knob on the front panel, with 50 dB
of gain at the maximum setting.
Note: When a cable is connected to the Instrument input on the front panel, the
Line 1 input is disabled.
¼" LEFT/RIGHT LINE OUTPUTS
These outputs support balanced TRS or unbalanced TS ¼" connections. These
outputs can be connected to a mixing board, power amplifier, powered studio monitors,
recorder, or another line level input.
RCA LEFT/RIGHT LINE OUTPUTS
These outputs support RCA connections. These outputs can be connected to a mixing
board, power amplifier, powered studio monitors, recorder, or another line level input.
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Connecting to the Alpha Studio
CONNECTINg TO ThE AlPhA
STUdIOTM
The Alpha StudioTM is both a 2 x 2 x 2 mixer and a USB audio interface that can be
used in a variety of audio setups. This section describes how to make basic connections
for the following applications:
•
•
•
Monitoring Audio
Recording Audio
Connecting a Recorder for Mixdown
MONITORINg CONNECTIONS
The Alpha Studio allows you to monitor audio from both the hardware inputs (Direct)
and from the computer (Playback). Use the Monitor Mix control to balance
between the direct audio and playback audio from your computer (For a complete
description of the Monitor Mix control, see page 10).
You can listen to (monitor) the audio through either the 1⁄8" Headphone jack on
the front panel, through studio monitors using the ¼" or RCA L/R Line Out jacks
on the rear panel, or both. The output level of both the L/R Line Out jacks and the
Headphone jack are controlled with the Output Level knob on the front panel.
Alpha Studio’s ¼" L/R Line Outputs have a nominal output of +4dBu, and support
both balanced (TRS) or unbalanced (TS) connections.
CONNECTING HEADPHONES:
1. Connect headphones to the Headphone jack located on the front panel of the
Alpha Studio. The Headphone jack accepts an 1⁄8" TRS connector.
2. Adjust headphone volume with the Output Level knob.
CONNECTING TO MONITOR SPEAKERS:
1. Using ¼" cables (balanced TRS cables are recommended), connect the L/R Line
Out jacks on the rear panel of the Alpha Studio to the appropriate inputs on your
mixer, power amp, or powered monitors.
2. Adjust the Alpha Studio's output volume with the Output Level knob. If using
both headphones and monitor speakers, adjust the level of the external power amp
or speakers using their gain controls after you’ve set the desired level in your head-
phones.
CONNECTING RCA OUTPUTS FOR MONITORING TO A HOME STEREO
Connect the RCA Line Out 1-2 jacks on the rear panel of the Alpha Studio to the
appropriate inputs on your stereo, typically the Tape In or Aux In jacks, using standard
RCA cables. Keep the Output Level knob on the Alpha Studio low at first, raising it
slowly to match the level of other units connected to the stereo.
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About Recording Connections
AbOUT RECORdINg CONNECTIONS
Analog audio signals are created by microphones, synthesizers, mixers, and instru-
ments with magnetic pickups.
Of these sources, microphones and magnetic instrument pickups have the lowest
output level, and generally require the most amplification. Keyboards, preamps, and
mixers output “line level” audio, which varies with each device between the -10 dBV
and +4 dBu standards.
TO CONNECT A MICROPHONE
Plug an XLR cable directly from a microphone into the Mic input on the Alpha
StudioTM rear panel. Only dynamic (non-powered) or self-powered condenser mics are
accepted.
NOTE: When using the Mic input, DO NOT plug a cable into the Line In 2 input.
Inserting a cable into the Line In 2 input disconnects the mic input internally.
TO CONNECT A LINE LEvEL SOURCE
Plug a ¼" TS (unbalanced) or TRS (balanced) cable directly from the line level
source into the desired Line In jack on the rear panel of Alpha Studio. Line level
sources include keyboards, drum machines, CD and cassette players, or external
microphone preamps and effects. If the line level source has something other than ¼"
outputs, cable adapters can be used.
TO CONNECT AN INSTRUMENT
Plug a standard ¼" TS (instrument) cable directly from the instrument into the
Instrument input jack on the front panel of Alpha Studio. Note that this will disable
the Line In 1 jack on the back panel.
Note: Plugging a cable into the Instrument input disconnects the Line In 1 input.
Plugging a cable into the Line In 2 input disconnects the Mic input.
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Mixdown Connections
MIxdOWN CONNECTIONS
For the cleanest
recording, adjust
After you record and mix your sessions in either Cubase® LE or other recording
software, you may want to mix them down to a DAT, audio cassette, or other stereo
2-track recording device.
the Gain so the
Peak LED flashes
only occasionally,
on the loudest part
of the perfor-
mance.
Headphones
DO NOT TURN
DOWN A GAIN
CONTROL TO
GET THE RIGHT
MIX IN YOUR
HEADPHONES OR
MONITORS WHILE
RECORDING. USE
THE Monitor
Mix CONTROL
FOR THIS
Chan 1/Inst
Chan 2/Mic
Monitor Mix
Output Level
Instrument
Monitor
Stereo
Mono
Peak
Peak
USB
Mixdown Deck
CONNECTING TO AN ExTERNAL RECORDER
Connect either the RCA or ¼" Line Out L-R jacks on the back of the Alpha Studio™
to the left and right inputs, respectively, on your recorder (cassette deck, CD burner,
or other recorder with analog inputs). Refer to your recorder's operator's manual for
more information about setting recording levels.
If you are connecting to an analog mixdown deck (such as a cassette recorder), start
with the Output Level knob on the Alpha Studio at about the 12 o’clock (straight
up) position, and the recorder’s input level also at or near 12 o’clock. Adjust the
Output Level knob on the Alpha Studio until the meters on your recording deck read
consistently between 0dB to +4dB, raising the input level control on the recorder if
necessary.
PURPOSE.
If you are connecting to a digital recorder such as a DAT or CD recorder, set the input
level(s) on the recording device all the way open, to their maximum setting, and then
adjust the Output Level knob on the Alpha Studio until the meters on your record-
ing deck device consistently peak just below the 0dBFS (Full Scale) mark without
causing clipping (going over the 0dBFS mark).
To hear the mix through control room speakers, connect the outputs of the recorder to
the inputs of the control room amplifier or powered monitors. Adjust the control room
level using the output level of the recording deck or the input level of the control room
amplifier or speakers.
MIxING WITHIN CUBASE® LE
You can mixdown directly within Cubase LE or other recording software, and burn an
audio CD from that mix (provided your computer has a CD-R drive). Consult the
Cubase LE online manual or documentation for your recording software for a complete
description of mixing within the software.
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Connections Diagram
CONNECTIONS dIAgRAM
Mixdown Deck
¼"
Chan 1/Inst
Chan 2/Mic
Monitor Mix
Output Level
Instrument
Monitor
Stereo
Mono
Peak
Peak
USB
WINdOWS® SOFTWARE SETUP
You must consult the Software Installation Guide on the included CD to ensure the
successful installation of the recording software and USB drivers.
If you haven’t already installed the Cubase LE and Lexicon® Pantheon™ plug-in
software, please do so before continuing on to the next section. Follow the on-screen
instructions to install the USB drivers.
WINDOWS® xP
You must install the USB drivers after you’ve made the connection between your
computer’s USB port and the USB port of the Alpha Studio™.
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Macintosh Software Setup
MACINTOSh® SOFTWARE SETUP
You must consult the Software Installation Guide on the included CD to ensure the
successful installation of the recording software and USB setup.
If you haven’t already installed the Cubase® LE and Lexicon Pantheon™ plug-in
software, please do so before continuing on to the next section.
MAC OS
A USB device must initialize itself with the host computer to operate correctly. The
simplest way to avoid problems is to connect the Alpha Studio to the USB port after the
computer is booted.
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®
Using the Lexicon Alpha Studio™
®
USINg ThE lExICON AlPhA
STUdIO™
1. Start Cubase® LE. The first time you use
Cubase LE with the Alpha Studio™
you may be asked to run the Multimedia
test as shown here. Deselect the check box,
then click NO.
2. Cubase LE will display the following
warning that the configuration has not
been tested. Click OK.
3. Once Cubase LE opens, go to
Devices>Device Setup.
4. Under Devices, click on VST
Multitrack and select Alpha
ASIO if it is not already select-
ed. Click on Switch to select
the driver, then click OK. You
are now ready to begin record-
ing using your Alpha Studio
and Cubase LE.
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Recording Audio with the Alpha StudioTM
SECTION I – RECORDING AUDIO WITH THE ALPHA STUDIO™
The diagram below shows how the Alpha Studio™ is connected for this particular
setup.
A. RECORDING USING THE MICROPHONE/LINE INPUT
Chan 1/Inst
Chan 2/Mic
Monitor Mix
Output Level
Instrument
Line In 1
Mic Input
Monitor
Stereo
Mono
Peak
Peak
USB
Plug your microphone cable into the Mic Input XLR jack or line level audio source to
the Line 1 ¼" jack on the back of the Alpha Studio.
To set up the software to record:
1. Open Cubase® LE.
2. Click File and select New Project.
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Recording Using the Microphone/Line Input
3. Select Default and click OK.
4. Select a location to store the project (or use the default location) and click OK.
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Recording Using the Microphone/Line Input
To set the input of the track to record:
1. Click anywhere in the gray area (not on the buttons) of the Track 1 window
(labeled as Audio 01).
2. Click the Show Inspector button , located in the upper left corner of the
screen. The Inspector window appears on the left side of the screen.
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Recording Using the Microphone/Line Input
3. In the Inspector, click the IN: box and select IN 1 or IN 2 for the track input
source. (IN 1 relates to Line 1/Inst, IN 2 relates to Line 2/Mic inputs.)
4. In the Track 1 window, the Record Enable button
should already be red.
If it isn't, click it so that it turns red.
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Recording Using the Microphone/Line Input
5. In the Track 1 window, click the Input Monitoring button
lit.
so that it is not
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Recording Using the Microphone/Line Input
To check the input level from the microphone or Line Input:
1. If you are using a mic and have connected the Alpha Studio™ to studio monitors,
turn them down or off to avoid feedback.
2. If you want to hear the audio source in headphones, turn up the Alpha Studio
Output Level knob and turn the Monitor Mix knob counter-clockwise
(towards the Direct side). Press the Monitor Assign button so it is in the
Mono position. This will let you hear output on both sides of your headphones
when recording only one microphone or line level source.
Input Louder
Playback Softer
Playback Louder
Input Softer
Monitor Mix
Monitor Button
3. Speak or sing into the microphone or play the line level source while gradually
increasing the gain by turning up the Line 1/Inst or Line 2/Mic knob until you
see the Peak LED light next to the Line 1/Inst or Line 2/MIc knob only flash
occasionally.
To start recording:
1. Click the Record button on Cubase® LE’s Transport control.
Record Button
2. Speak or play an instrument into the microphone or line input.
3. When you are finished recording press the Stop button.
Stop Button
4. Press Rewind and press the Play button to listen to the track you have just
recorded.
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Recording Using the Microphone/Line Input
Rewind and Play Buttons
5. Turn the Alpha Studio™ Output Level knob to adjust the listening volume, and
make sure the Monitor Mix knob is somewhere in the middle between Direct and
Playback.
To overdub a second track:
1. Click anywhere in the gray area (not on the buttons) of the Track 2 window
(labeled as Audio 02).
2. In the Inspector, click the IN: box and select IN 1 or IN 2 for Track 2's input. (IN 1
relates to Line 1/Inst inputs, IN 2 relates to Line 2/Mic inputs).
3. In the Track 2 window, the Record Enable button
should already be red.
If it isn't, click it so that it turns red.
4. In the Track 2 window, click the Input Monitoring button
so that it is not
lit.
To set monitor levels for a comfortable listening level:
1. On the front of the Alpha Studio hardware, locate the Monitor Mix knob.
Input Louder
Playback Softer
Playback Louder
Input Softer
Monitor Mix
2. While playing back the recording, adjust the Monitor Mix knob to balance the
levels between direct input signal and recording playback. To make the direct
input louder than the recording playback in the headphones, turn the Monitor
Mix knob towards the Direct side. To make the recorded track louder, turn the
Monitor Mix knob towards the Playback side.
NOTE: Changing the Monitor Mix does not affect the recording level, only what
you hear while recording. You can also adjust the playback level and pan position
of the original track in your monitor by adjusting the controls for Track 1 within
Cubase® LE’s Mixer window.
3. Click on Record and record the second (overdubbed) track.
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Recording a Guitar Using the Instrument Input
B. RECORDING A GUITAR USING THE INSTRUMENT INPUT
This section explains how to record using the ¼" Instrument input jack on the front
panel.
1. Plug your electric, acoustic, or bass guitar into the Instrument input jack on the
front of the Alpha Studio™ hardware.
Instrument Jack
The Instrument input uses the same recording channel as the Line 1 input;
anything plugged into the ¼" Line 1 input jack on the back of the Alpha Studio
will not be recorded when a cable is connected to the ¼" Instrument input jack
on the front panel.
NOTE: This jack is intended for electric guitar and bass, or acoustic instrument
pickups, not line-level signals such as the output of keyboards or a direct out from a
guitar amplifier. For those, use the Line 1-2 input jacks on the back of the Alpha
Studio hardware.
2. Press the Monitor Assign button between Line 2/Mic and Monitor Mix
knobs so that it is in the Mono position.
Monitor Button
3. Open Cubase LE, go to File and select New Project>Default, and a project
location. (See Section I for more information.)
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Recording a Guitar Using the Instrument Input
To set the input of the track to record from the 1-2 USB channels:
1. Click anywhere in the gray area (not on the buttons) of the Track 1 window
(labeled as Audio 01).
2. In the Inspector, click the IN: box and select IN 1 for the track input source.
3. In the Track 1 window, the Record Enable button
should already be red.
so that it is not
If it isn't, click it so that it turns red.
4. In the Track 1 window, click the Input Monitoring button
lit.
5. Next, adjust the input gain of the Instrument input To set the input level, strum
the guitar while gradually turning up the Line 1 knob until the Peak LED lights
only occasionally with the loudest signals.
6. To begin recording, click the Record button on the Transport control. Play some
chords or notes on the guitar. When you are finished recording, click Stop, then
Rewind.
Record Button
Stop Button
Rewind Button
7. Click the Play button to listen to the track you have just recorded.
Play Button
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Using Software Input Monitoring
SECTION II - USING SOFTWARE INPUT MONITORING
The previous examples have turned off Cubase® LE’s Input Monitoring software switches
while recording tracks, and used the Monitor Mix knob on the front of the Alpha
Studio™ hardware to directly monitor an input without latency. Software monitoring
lets you listen to software-based effects in real time and adjust the monitor mix indepen-
dently of the recording levels, but also introduces some latency (delay) into the input
signal. The amount of latency depends on the amount of buffers assigned in the ASIO
control panel. See page 31 for more information about adjusting buffer settings.
1. When using Cubase LE’s input software monitoring with the Alpha Studio, you will
want to set the Monitor Mix knob all the way to the Playback side.
2. Click the Input Monitoring
button on the track you are recording to. You
will now be able to hear your input. Now you can try assigning an effect on the
input. This example assigns a Pantheon™ reverb.
3. Click the Track Edit button.
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Using Software Input Monitoring
4. Click on an Insert.
5. Select Lexicon® and Pantheon™.
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Using Software Input Monitoring
6. Choose Large Hall from the drop down menu at the top of the Pantheon™ Edit
Window.
7. Because this is an insert effect, move the Mix slider to 50% (see the Pantheon
manual for more details).
8. Change the level to about -52dB. Now you will record with the Lexicon® Pantheon
Reverb on your track.
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Adjusting the buffer Settings
SECTION III - ADJUSTING THE BUFFER SETTINGS
Audio latency is the minimum time required for a computer to store recorded audio
from an audio interface into the recording application memory and playback that
same recorded audio back out audio interface output.
After the audio has been converted to the digital domain, it is passed to a buffer before
it is processed by the driver and then passed to the audio application. An audio buf-
fer is a reserved segment of memory used to hold this advance portion of audio data
to compensate for momentary delays in processing. The size of an audio buffer is
the maximum number of samples the buffer can hold. For sound coming from the
computer, there is an output buffer before the digital to analog conversion. "Buffering"
introduces latency, since a buffer needs to fill up by a certain amount before the data
can continue along the chain.
The buffers in Cubase® LE were automatically set at a safe setting for your computer
when you installed the software. If you are using Input Monitoring, you may wish to
adjust the amount of buffering to reduce this latency, or perceived delay in the input
vs. output of audio. Lowering the buffers will lower the amount of latency when using
Input Monitoring. Setting the buffers too low will result in unwanted digital artifacts,
such as popping or crackling and possibly audio dropout. The faster the computer
(Hard Disk and CPU), the lower you will be able to adjust the buffer setting without
negatively impacting the audio. For more information, consult the Cubase online
documentation.
A. ADJUSTING THE BUFFERS IN WINDOWS® xP
1. Open Cubase LE and go to Devices>Device Setup.
2. Click on VST Multitrack.
3. Click the Control Panel button. You will now see the ASIO control panel. The
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Adjusting the buffer Settings
top slider is the buffer size; this number gets multiplied by the bottom slider,
labeled Number of Buffers.
4. When you are finished adjusting the buffer size, click the OK button and return to
your project to test the results.
B. ADJUSTING THE BUFFERS IN MAC® OSx
1. Open Cubase LE and go to Devices>Device Setup.
2. Click on VST Multitrack.
3. Click on Audio Buffer Size and select the Number of Samples.
4. When you are finished click OK.
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Specifications
SPECIFICATIONS
Microphone Input:
Input Impedance:
GAIN:
Female XLR Pin 2 Hot
600 Ohms balanced
+50 dB
EIN:
−115 dB A-weighted @ +50dB gain (150 Ohm source impedance)
–7 dBu
+0, −0.5 dB 20 Hz - 20 kHz, ref. 1 kHz
<.005%, 20 Hz - 20 kHz
Maximum Input Level:
Frequency Response:
THD+N:
Line Inputs:
(2) 1/4" TRS balanced or unbalanced
20 kOhm balanced, 10 kOhm unbalanced
+13 dBu
+0, −0.5 dB 20 Hz - 20 kHz, ref. 1kHz
<.009% A/D, 20 Hz - 20 kHz
Input Impedance:
Maximum Input Level:
Frequency Response:
THD+N:
Instrument Input:
Input Impedance:
Maximum Input Level:
Frequency Response:
THD+N:
(1) 1/4" mono jack
1 MOhm unbalanced
+8.5 dBu
+0, −1 dB 20 Hz - 20 kHz, ref. 1 kHz
<.0125% A/D
Line Outputs:
Level:
(2) 1/4" TRS balanced or unbalanced
+16 dBu maximum
Impedance:
Headphone Output:
1 KOhm Balanced, 500 Ohm Unbalanced
(1) 1/8" stereo jack 20 mW per channel at 50 Ohms
Sample Rate:
Dynamic Range:
44.1 kHz or 48 kHz (determined by computer application)
A/D (24 Bit) 100 dB typical, A-weighted, 20 Hz - 20 kHz
D/A (24 Bit) 100 dB typical, A-weighted, 20 Hz - 20 kHz
97 dB typical, A-weighted, 20 Hz - 20 kHz
USB powered
A/D/A (24 Bit)
Power Requirements:
Dimensions:
6.7 x 6.5 x 1.5
Weight:
1.13 lbs.
Lexicon engineers are constantly working to improve the quality of our products.Specifications are therefore
subject to change without notice.
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®
Lexicon Alpha Studio™ Signal Routing Diagram
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Alpha Desktop Recording Studio™
Harman Music Group
8760 South Sandy Parkway | Sandy, Utah 84070 U.S.A.
Phone: 801-566-8800 | Fax: 801-566-7005
Questions or comments?
Email us at: [email protected]
®
Copyright 2006 Lexicon Professional
Part Number: 18-0346-A
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