Two Notes torpedo studio User manual

2017/11/10 22:17 1/52 Torpedo Studio User's Manual
User's manuals - http://wiki.two-notes.com/
Torpedo Studio User's Manual
The world’s most advanced digital loadbox
The complete electronic version of this manual, as well as the Two notes Audio Engineering software
and hardware products, are subject to updates. You can download the most recent versions of the
products on the Two notes Audio Engineering website.
This manual describes the Torpedo Studio and provides instructions for its operation. It is highly
recommended that you read this document before using the product. The contents of this manual
have been thoroughly verified and it is believed, unless stated otherwise, to accurately describe the
product at the time of shipment from the factory or download from our website.
Two notes Audio Engineering is a registered trademark of:
OROSYS SAS
76 rue de la Mine
34980 Saint-Gély-du-Fesc
France
Tel: [phone]
Fax: [phone]
Contact and support: http://support.two-notes.com
Website: http://www.two-notes.com
This document is the exclusive property of OROSYS SAS. In the interest of product development,
OROSYS SAS reserves the right to change technical specifications, modify and/or cease production
without prior notice. OROSYS SAS cannot be held responsible for any damage, accidental or
otherwise, that results from an inappropriate use of the Torpedo Studio. Please refer to the safety
instructions included in this manual. The reproduction of any part of this document is strictly
forbidden without the written authorization of OROSYS SAS.
All product names and trademarks are the property of their respective owners. Product names and

Last
update:
2017/11/08
15:11
torpedo_studio:torpedo_studio_user_s_manual http://wiki.two-notes.com/doku.php?id=torpedo_studio:torpedo_studio_user_s_manual
http://wiki.two-notes.com/ Printed on 2017/11/10 22:17
trademarks found in this document were used during the development of the Torpedo Studio product
but are in no way associated or affiliated with OROSYS SAS.
1 Foreword
1.1 Safety instructions
Before using the product, it is necessary to carefully read and to bear in mind the following
information. Keep this document in a safe place as it is important for the protection of both
user and product. Should you suspect any malfunction of the device, always seek the assistance of
a qualified technician.
1.1.1 Risk of electric shock
The triangle with a lightning bolt means that some parts of the product, even
when the power is turned off or unplugged, can retain voltage high enough to
cause serious electric shock. Any operation that requires opening the device
should be left to a qualified technician.
1.1.2 Reader warning
The triangle with an exclamation mark highlights important messages concerning
the correct use of the device.
1.1.3 Mains Power
Please verify that the voltage required by the device matches the voltage of your country. If it doesn’t
or if you are unsure, do not plug the device to the wall outlet as this could result in damage to the
device and injuries to the user.
This product must not be used during lightning storms. In case of severe weather with a risk of
lightning, unplug the mains power supply to reduce the risk of electric shock and fire.
The mains power cable provided with the unit complies with the standards of the country where you
purchased the product. If replacement is needed, please use a standard compliant cable.

2017/11/10 22:17 3/52 Torpedo Studio User's Manual
User's manuals - http://wiki.two-notes.com/
1.1.4 Ground Connection
For safety reasons, the unit needs to be plugged into a wall outlet with a ground connection. If your
electric installation does not provide a ground connection or if you are unsure, please ask a qualified
electrician for help. If your mains power cable does not match your wall outlet, ask a qualified
electrician for help. In order to prevent risks of electric shock or fire, never remove the outer or inner
ground connection of the unit.
1.1.5 Safety use conditions
The Torpedo Studio must never be used near a heat source, near a flame, in the rain, in damp areas,
near any kinds of liquids.
When transporting the unit, care needs to be taken to avoid any shocks that might cause damage and
therefore require the assistance of a qualified technician.
Never cover or restrict the ventilation openings. Never unplug or deactivate the heat control
monitoring system, or you will be exposed to risks of electric shock and fire.
1.1.6 Cleaning
Always use a piece of dry and soft cloth with no alcohol or solvents for cleaning. Please keep the unit
clean and free from dust.
1.1.7 Maintenance
All maintenance operations must be performed by service centers approved by OROSYS SAS or by
qualified technicians. Never try to repair the machine by yourself.
1.2 Contents of the package
The shipped package contains:
One Torpedo Studio unit in a protective sleeve
One mains power cable
One USB cable
One User's Manual
The complete electronic version of this manual, as well as the Torpedo Remote and Torpedo BlendIR
softwares are subject to updates. You can download the most recent versions of these products on
the Two notes Audio Engineering website.

Last
update:
2017/11/08
15:11
torpedo_studio:torpedo_studio_user_s_manual http://wiki.two-notes.com/doku.php?id=torpedo_studio:torpedo_studio_user_s_manual
http://wiki.two-notes.com/ Printed on 2017/11/10 22:17
1.3 Declaration of conformity
Manufacturer: OROSYS SAS
Category of product: digital audio signal processor
Product: Torpedo Studio
Test Manager: Guillaume Pille
The Two notes Torpedo Studio is certified to be compliant to the CE and FCC standards:
EN 55103-1 : 1996 and EN 55103-2 : 1996.
EN 60065 05/2002 + A1 05/2006.
EMC directive 89/336/EEC and Low Voltage Directive 73/23/EEC.
FCC Part 15 : 2008.
ICES-003 : 2004.
AS/NZS 3548 class B for Australia and New Zealand.
IEC : 2008 - CISPR 22 class B.
1.4 Disposal of Waste Equipment by Users in Private
Household in the European Union
This symbol on the product or on its packaging indicates that this product must
not be disposed of with your other household waste. Instead, it is your
responsibility to dispose of your waste equipment by handing it over to a
designated collection point for the recycling of waste electrical and electronic
equipment. The separate collection and recycling of your waste equipment at the
time of disposal will help to conserve natural resources and ensure that it is
recycled in a manner that protects human health and the environment. For more
information about where you can drop off your waste equipment for recycling,
please contact your local city office, your household waste disposal service or the
shop where you purchased the product.
1.5 Warranty
OROSYS SARL warrants that this TWO NOTES AUDIO ENGINEERING product shall be free of defects in
parts and workmanship when used under normal operating conditions for a period of two (2) years
from the date of purchase. This warranty shall apply to the original purchaser when purchased from
an Authorized TWO NOTES AUDIO ENGINEERING dealer.
IMPORTANT: PLEASE RETAIN YOUR SALES RECEIPT, AS IT IS YOUR PROOF OF PURCHASE
COVERING YOUR LIMITED WARRANTY. THIS LIMITED WARRANTY IS VOID WITHOUT YOUR
SALES RECEIPT.

2017/11/10 22:17 5/52 Torpedo Studio User's Manual
User's manuals - http://wiki.two-notes.com/
Defective products that qualify for coverage under this warranty will be repaired or replaced, (at
OROSYS SAS’s sole discretion) with a like or comparable product, without charge. In the event that
warranty service be required, Please contact your authorized TWO NOTES AUDIO ENGINEERING dealer
in order to obtain an RMA to return the complete product to the Authorized TWO NOTES AUDIO
ENGINEERING Service Center closest to you, with proof of purchase, during the applicable warranty
period.
Transportation costs to the service center ARE NOT INCLUDED in this limited warranty. OROSYS SAS
will cover the cost of standard ground return transportation for repairs performed under this warranty.
This limited warranty becomes void if the serial number on the product is defaced or removed, or if
the product has been damaged by alteration, misuse including connection to faulty or unsuitable
ancillary equipment, accident including lightning, water, fire, or neglect; or if repair has been
attempted by persons not authorized by OROSYS SAS.
Any implied warranties, including without limitation, any implied warranties of merchantability or
fitness for any particular purpose, imposed under state or provincial law are limited to the duration of
this limited warranty. Some states or provinces do not allow limitations on how long an implied
warranty lasts, so the above limitations may not be applicable.
OROSYS SAS ASSUMES NO LIABILITY FOR PROPERTY DAMAGE RESULTING FROM ANY
FAILURE OF THIS PRODUCT NOR ANY LOSS OF INCOME, SATISFACTION, OR DAMAGES
ARISING FROM THE LOSS OF USE OF SAME DUE TO DEFECTS OR AVAILABILITY OF IT
DURING SERVICE.
In case you must absolutely send your TWO NOTES AUDIO ENGINEERING product to any other
location, it is of vital importance that you keep the original packing material. It is very difficult to
avoid damage when shipping the product without that material. OROSYS SAS is not responsible for
damages caused to the product by improper packaging and reserves the right to charge a reboxing
fee for any unit returned for service without the original packing material.
THE FOREGOING CONSTITUTES THE ONLY WARRANTY MADE BY OROSYS SAS WITH
RESPECT TO THE PRODUCTS AND IS MADE EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES
EXPRESSED OR IMPLIED.
2 Recommendation on the proper use of a
loadbox with a tube amplifier
2.1 What is a loadbox?
In the normal use of a tube amplifier, it is highly recommended that you always connect its power
output to a speaker cabinet prior to powering it up. The speaker cabinet (4, 8 or 16 Ohms) must
always be connected to the corresponding speaker output of your amplifier. Not doing so can lead to
partial or complete destruction of the output stage of the tube amplifier.
Most tube amplifiers makers protect their products with fuses or other protection systems, however

Last
update:
2017/11/08
15:11
torpedo_studio:torpedo_studio_user_s_manual http://wiki.two-notes.com/doku.php?id=torpedo_studio:torpedo_studio_user_s_manual
http://wiki.two-notes.com/ Printed on 2017/11/10 22:17
some amplifiers are still insufficiently protected. It is impossible to predict the behavior of all the
amplifiers on the market in case of use without a load (a speaker cabinet or a loadbox).
The electronic term that describes the speaker cabinet with respect to the amplifier is the “load”: we
say the cabinet “loads” the amplifier. The term “loadbox” is used to describe any product that
provides a load to the amplifier. The main parameter of the loadbox is its impedance, expressed in
Ohms. An 8-Ohm loadbox must be plugged to the 8-Ohm speaker output of the amplifier.
The power sent to the load is turned into heat, so please follow the cooling recommendation in the
manual — otherwise overheating may cause damage, both to the loadbox and to the amplifier.
The Torpedo Studio is a digital loadbox. This term indicates that the Torpedo Studio is a load which
can electrically replace the speaker cabinet while dissipating (transforming into heat) the power
coming out of the amplifier.
Within the Torpedo Studio is a selectable Reactive or Resistive load:
• A Reactive load simulates the complex impedance of a real speaker. The result on the sound is
usually a brighter tone and more natural sounding.
• A Resistive load is a simple resistance, or a network of resistances, which has a fixed impedance
value (4, 8 or 16 Ohms) over the whole audio spectrum. This kind of system is widely used in the
industry to silently test amplifiers. The result on the sound is usually a warmer tone, with your amp
going into saturation a little sooner on the output volume (this actually depends on your amplifier’s
internal design).
Always connect the speaker out of your tube amplifier to an appropriate
load (speaker cabinet or loadbox). The Torpedo Studio, once powered
up, is such a load. Please note that you should always power up the
Torpedo Studio before your amplifier. The maximum admissible power
of the Torpedo Studio is 150W RMS, your amplifier shouldn't be set to
play at a higher output power value. See this article if your amplifier is
more powerful than 150W.
2.2 Which output volume for my amplifier?
The correct use of your amplifier with a loadbox requires some precautions. Because of the silence
while playing, it is much easier to accidentally run your amplifier beyond the reasonable limits set by
the manufacturer than when using a real speaker cabinet with it. This can lead to faster tube wear
and, in some cases, to more serious inconveniences.
When first testing the amplifier at high volume, monitor the color of the
tubes and the general state of the amplifier. Red-glowing tubes or any
appearance of smoke are signs of a problem that may result in partial or
complete destruction of the amplifier.
Keep in mind that the “sweet spot” - the perfect running point of the amplifier, the one that will give
you the tone you’re looking for - is rarely obtained at maximum volume. In addition, the volume
control of the amplifier is usually logarithmic, which means the volume goes up quickly on the first

2017/11/10 22:17 7/52 Torpedo Studio User's Manual
User's manuals - http://wiki.two-notes.com/
half of the potentiometer rotation, reaches its maximum at 12 o’clock, and doesn’t change much
beyond this point. Therefore, you can reach the maximum volume of your amplifier even if the
volume potentiometer is not set at maximum.
By reaching the maximum output power of your amplifier, you will hear a lot of distortion, which may
not sound as well as you may hope. In fact, most amplifiers sound rather poorly at maximum volume.
Always keep in mind that your amplifier may not have been conceived to be used at maximum
volume for a long period of time. Running an amplifier at high volume will cause premature wear of
the tubes and possible malfunctions or damages at the output stage.
The fact that the volume control of your amplifier is not set at maximum
doesn’t mean your amplifier is not running at maximum volume. A good
habit is to keep the usual volume setup you would use in rehearsal or on
stage, rather than just following what the volume potentiometer indicates.
2.3 Is the use of a loadbox totally silent?
We usually talk about “silent recording” when a loadbox is involved. If we compare the loadbox
solution to a traditional cabinet miking solution, it is obviously A LOT quieter. Noises that you may
have not been able to hear before due to the volume of the speaker cabinet will now be more
apparent. Here are a few of those sounds that you might have to take into account:
• Your guitar or bass strings can be heard. If you are not used to this, it could be initially distracting,
depending on your environment.
• You may hear some noise coming out of your Torpedo Studio when playing, like there is a tiny
speaker inside the box. This is perfectly normal and there is no reason to worry. The sound is
produced when power goes through the coil of the reactive load embedded on the Torpedo Studio.
The vibration is related to what power comes out of the amplifier connected to the Torpedo Studio
and to the signal’s frequency content (notes played are heard). Your ampli- fier, specifically the
output transformer of your amplifier, may also produce similar noise. Such noise is usually not heard,
simply because it is normally obscured by the sound coming from the loudspeaker.
• The Torpedo Studio has a built in fan, as there is quite a lot of power dissipated into heat inside the
box. We selected a so called “silent fan”, but as it is running fast, it is never entirely silent. This said,
you can consider that, in normal use (hearing your guitar through monitors, or headphones), you can
barely hear the fan.
3 About the Torpedo Studio
3.1 Introducing the Torpedo Studio
Two notes Audio Engineering is proud to introduce the Torpedo Studio. This product has been
developed through several years of technical development, with great attention paid to the needs of
guitarists, bassists and sound technicians faced with the challenges posed by the miking of

Last
update:
2017/11/08
15:11
torpedo_studio:torpedo_studio_user_s_manual http://wiki.two-notes.com/doku.php?id=torpedo_studio:torpedo_studio_user_s_manual
http://wiki.two-notes.com/ Printed on 2017/11/10 22:17
instrument amplifiers, on stage or in the studio. The Two notes team has taken extreme care to
design the highend, professional Torpedo Studio rack unit. Our goal is to provide ease of use,
reliability, versatility and above all, perfect audio quality.
The Torpedo technology was created as an answer to the high pressure musicians have to deal with:
lack of time, limited gear availability, loud amplifiers that cannot be played at desired volume, as well
as bulky and heavy cabinets to carry. In addition, many musicians are more comfortable with their
analog amplifier and effect pedals, and feel reluctant to perform using digital modeling systems that
might compromise their playing style and sound.
For them, the Torpedo Studio offers a “virtual” alternative to traditional miking, using a technology
derived from convolution reverberation, to achieve a degree of realism never experienced with
simulators before. The musicians simply plug into the Torpedo Studio in place of their cabinet by
connecting it to the speaker output of their amplifier, without modifying their usual settings (or
connected effect pedals, depending on the case).
The Torpedo Studio comes with a large library of 50 cabinets and 8 microphones among the most
commonly used models in the world. You can also upgrade and add many other cabinets through “La
Boutique”, our online virtual cabinet store. The virtual miking is done by choosing one cabinet and
one microphone, then fine-tuning the position of the microphone in front of the cabinet. The Torpedo
thus enables the user to assume the role of the sound engineer in a professional studio.
The Torpedo Technology: for unsurpassed realism and playing comfort, Two notes has developed a
unique technology based on an adaptation of convolution techniques. Starting with the measurement
of an actual cabinet + microphone setup, the Torpedo Studio can accurately reproduce the system
as it was measured, as well as the microphone’s position in space.
In order to take full advantage of these digital algorithms, the highest quality audio design guarantees
perfect analog-to-digital conversion and a wide dynamic range to provide the ultimate playing
experience.
This product has been thoroughly tested in professional studio and stage environments and is the
alternative many musicians have been waiting for to professionally capture the sounds of their
amplified instruments. The Torpedo Studio will bring you the elusive sound of the greatest recording
studios and producers, anytime, anywhere.
3.1.1 Front panel
1. Ventilation slit
2. Input gain
4. Main screen
5. Menu switches
7. Output volume
8. Headphones output

2017/11/10 22:17 9/52 Torpedo Studio User's Manual
User's manuals - http://wiki.two-notes.com/
3. Presets screen 6. Navigation switches 9. Mains switch
3.1.2 Rear panel
1. Mains power
2. Warning notices
3. Serial number
4. Wordclock Input
5. MIDI In/Out/Thru
6. USB
7. S/PDIF In/Out
8. AES/EBU In/Out
9. Analog Line
Outputs (Bal.)
10. Analog Line Inputs
(Bal. or Unbal.)
11. Speaker THRU
(Output)
12. Speaker Input
13. Impedance
selector
14. Fan
3.2 Only A Speaker Simulator?
The Torpedo Studio is a standalone unit you can bring with you in any situation, whenever silent
playing is needed.
The role of the Torpedo Studio is to replace the following elements of the traditional guitar or bass
setup:
the guitar/bass power amplifier
the speaker cabinet
the microphone
the microphone preamplifier
In order to provide a signal that is the closest possible to a traditional guitar/bass miking in a
professional studio environment.
The miking is achieved in 3 steps with the Torpedo Studio:
Choose a power amplifier (or switch it off if you are using a loadbox), a speaker cabinet and a1.
microphone (Gear menu)
Position the microphone inside the virtual studio (Miking menu)2.
Shape the signal (Post-FX menu).3.
At each step, Two notes Audio Engineering implements its know-how to offer the most advanced
simulations on the market and ensure absolutely realistic quality both for the musician (in terms of
playing sensation) and for the listener (in terms of sound quality).
You can load up to 50 Two notes cabinets in the Torpedo Studio. Download the free Torpedo Remote

Last
update:
2017/11/08
15:11
torpedo_studio:torpedo_studio_user_s_manual http://wiki.two-notes.com/doku.php?id=torpedo_studio:torpedo_studio_user_s_manual
http://wiki.two-notes.com/ Printed on 2017/11/10 22:17
software (Mac OS X and Windows PC) from the Two notes Audio Engineering website, and you will be
able to add or remove the stored cabinets. There are currently more than 200 Two notes cabinets
available in La Boutique and the Two notes Store that you can try in real time and purchase with
Torpedo Remote (requires a working Internet connection).
3.2.1 Tube Stage Output
When using guitar/bass preamplifiers with some other speaker emulators, the musician may feel they
miss a power amplifier’s contribution to the overall sonic texture. Many musicians get their sound
from a particular use of that element and the Torpedo Studio gives you the possibility to use it too.
To that effect, Two notes Audio Engineering has developed an original tube-stage modeling that gives
you a choice of 4 different tube models (6L6, EL34, EL84 and KT88) in Push-Pull (PP) in AB class, or
Single Ended (SE) in A class configurations. You can push this tube stage like a conventional amplifier
and look for that subtle yet particular distortion.
The Torpedo Studio can be used as a super-DI for keyboards. The tube-amp simulation feature,
developed for guitarists and bassists, can also be a very interesting device to warm up the sound of a
synthesizer, an organ, or a digital piano.
3.2.2 The Torpedo technology, convolution and Impulse Responses
The Impulse Response (IR) of a given system consists in the description of that system’s behavior in
the form of a very detailed filter. The convolution technique uses IRs to simulate the behavior of
specific systems such as reverbs, speakers, EQ, and so on.
This is the most accurate method to simulate sound signatures that are linear (i.e. without distortion)
and time-invariant (i.e. with no effect such as modulation, compression, hysteresis, etc.). It is
particularly well suited for speaker miking simulation.
Two notes has developed a unique technology based on an adaptation of convolution
techniques. Starting with a measure of a real cabinet + microphone setup, the Torpedo
Studio can accurately reproduce the system as it was measured, including its distortion,
as well as the microphone’s position in space by using IR synthesis. Control the amount
of distortion produced in the loudspeakers (Overload) and fix any phase issue with the
Variphi — exclusive Two notes Virtual Cabinets functions.
3.2.3 Dual Processing
With a mono (a tube amplifier) or a stereo source (a multi-effects, two different preamplifiers…) the
Torpedo Studio offers you what every sound engineer wants: the possibility of carefully placing two
microphones before the same cabinet, or of selecting two different cabinets and microphones and
mixing them.
You will discover the unlimited possibilities of dual miking, with two simultaneous A and B processing
channels: add up to two microphone and cabinet configurations and mix them in the stereo field or
keep them isolated on each channel, in real time. The IDLE display screen will show the A and B

2017/11/10 22:17 11/52 Torpedo Studio User's Manual
User's manuals - http://wiki.two-notes.com/
configurations. In the GEAR, MIKING and Post FX sections, you will choose the configurations and
adjust the parameters. Simply click on these buttons to select the A or B channel.
The Torpedo Studio features a loadbox which is mono, but can handle either two Analog
Line or Digital inputs, or a combination of the amp and Line inputs. Please refer the the
Setup/Audio/Input menu for more information.
3.2.4 Post FX Section
When recording guitars or basses, it is common to apply a few effects to shape the sound before it is
sent to a PA or a recorder. In the Torpedo Studio you will find a 6-bands EQ filter (with guitar, bass
and parametric modes), a 2-bands exciter, a studio compressor and a tweakable reverb.
3.2.5 3rd Party Impulse Responses
The Torpedo Studio is capable of delivering the best guitar and bass tones by using the Torpedo
technology, but you can also embed impulse responses that you have purchased or downloaded for
free from 3rd-party developers, in WAV or AIFF formats. You can upload third-party IRs in the Torpedo
Studio, by way of the free Torpedo Remote software.
3.2.6 Create Your Own IR's
Download the free Torpedo BlendIR software from the Two notes Audio Engineering website. With this
software you will be able to capture your own cabinet + microphone setup and embed its sound
signature into the Torpedo Studio.
4 Connecting the Torpedo Studio
The Torpedo Studio offers a solution for silent and quality sound capture in many situations. The
following illustrations show the most common situations the Torpedo Studio has been created for,
starting with the various routing options.
4.1 Torpedo Studio Quick Start
The Torpedo Studio is set up to be connected, right out of the box, to a guitar or a bass amplifier, and
used with headphones. You will just need a guitar or bass amplifier with a 4, 8 or 16 Ohm
Speaker Output and headphones.

Last
update:
2017/11/08
15:11
torpedo_studio:torpedo_studio_user_s_manual http://wiki.two-notes.com/doku.php?id=torpedo_studio:torpedo_studio_user_s_manual
http://wiki.two-notes.com/ Printed on 2017/11/10 22:17
1. Guitar or bass
amplifier
2. Electric guitar or
bass
3. Torpedo Studio
4. Headphones
In this first simple configuration, you will be creating a line-level professional “studio” quality output
for your amp, which will allow you to familiarize yourself with the machine within minutes.
First, plug a cable into the speaker output of your amp.
Remember to set the Torpedo Studio to the same impedance rating as the
one indicated above the socket you are plugged into on the back of your
amplifier. If you are using a speaker cabinet connected to the THRU output,
the impedance on the amplifier must match the cabinet’s impedance,
regardless of the value indicated on the Torpedo Studio.
Always use a standard speaker cable (a pair of insulated conductors with no
shielding) to connect your amplifier to the Torpedo Studio. Using an
instrument cable instead of a speaker cable can cause significant damage
to your amplifier, requiring service by a technician.
Then, plug this cable into the SPEAKER INPUT jack of the Torpedo Studio (number 12 in figure “3.1.2
Rear panel”).
Finally, plug your headphones into the Headphones output of the Torpedo Studio (number 8 in figure
“3.1.1 Front panel”).
You can now power on the Torpedo Studio, and then your amplifier.

2017/11/10 22:17 13/52 Torpedo Studio User's Manual
User's manuals - http://wiki.two-notes.com/
When powering-on the Torpedo Studio, you will hear the sound of a relay (a
brief click). This corresponds to the activation of the loadbox of the Torpedo
Studio, which allows your amplifier to run without a speaker cabinet. It is
important to always power on the Torpedo Studio before powering on your
amplifier.
The Torpedo Studio starts on preset 0. Now the input gain and output volume must be set up.
Turn up the volume of your amplifier to the level you want and play for a few seconds: turn the1.
input gain (number 2 in figure “3.1.1 Front panel”) until the signal stays in the top green/yellow
area on the input bargraph.
Turn the output volume gain (number 7 in figure “3.1.1 Front panel”) until the signal stays in2.
the top green/yellow area on the output bargraph.
Adjust the Headphones output volume to your taste.3.
You can now browse the presets with the NAVI knob (number 6 in figure “3.1.1 Front panel”). Use the
knob to change the preset number and press OK to load the preset.
For more flexibility, the values of the output volume is stored within each preset. Therefore, you may
have to adjust those parameters depending on the presets.
Within a few minutes, you have prepared your system for silent performance with headphones, but
also for stage sound pick-up (through the analog outputs) or for digital studio recording (through the
AES/EBU or S/PDIF outputs).
We will expand upon the numerous creative options and convenient features offered by the Torpedo
Studio further down in this manual.
4.2 Routing the Inputs/Outputs
The Torpedo Studio is a dual channel processor accepting mono or stereo input signals that can be
treated as independent or linked. The following illustration presents the various elements and how
they are configured.
Inputs are illustrated by Amp or L for the left input (Line Left, AES/EBU Left or S/PDIF Left) and
R for the right input (Line Right, AES/EBU Right or S/PDIF Right), depending on the selected
Input Mode in the Setup menu.
The simulation channels are illustrated by A and B
Outputs are illustrated by L and R. All the outputs (Line, AES/EBU, S/PDIF and headphones) get
the same left and right signals.

Last
update:
2017/11/08
15:11
torpedo_studio:torpedo_studio_user_s_manual http://wiki.two-notes.com/doku.php?id=torpedo_studio:torpedo_studio_user_s_manual
http://wiki.two-notes.com/ Printed on 2017/11/10 22:17
1. Input
2. Gain
3. Simulation
Channels
4. Volume
5. Pan
6. Output
4.2.1 Inputs routing
The input routing is selected through the SETUP menu.
Input parameter Resulting input routing
Amp The amplifier input (Speaker Input) feeds both A and B channels
Line L + Amp
The Line Left input feeds channel A, the amplifier input (Speaker Input)
feeds channel B. Use this configuration if you want to use an amp and a line
level instrument simultaneously.
Line, S/PDIF or AES/EBU
Left channel of the stereo input feeds Channel A, right channel of the stereo
input feeds Channel B. Use this configuration with a stereo line level
instrument or a digital processor/soundcard.
Line L, Line R, S/PDIF L,
S/PDIF R, AES/EBU L or
AES/EBU R
The selected mono input feeds both A and B channels
The Input potentiometer only controls the gain of the amplifier input (Speaker Input): in other words,
the loadbox gain. The line and digital inputs does not have a gain control, but we provide an Input
Boost to increase the signal when it’s needed. If you experience overloading of those inputs, please
lower the volume of the source. If is possible to boost the Speaker Input as well.
4.2.2 Outputs Routing
We have incorporated a useful function inherited from the Torpedo VB-101: the Dual Miking/Dry
output mode. When selecting that option, both A and B channel will be mixed in mono, either on the
right or left output, and the respectively left or right output will send the dry, unprocessed signal. It is
a very interesting function that allows you for example to record the dry signal on one track and the
wet signal, a mix of A and B processing channels, on another mono track.
Output parameter Resulting output routing
Stereo A and B channels are respectively sent to the L and R outputs.

2017/11/10 22:17 15/52 Torpedo Studio User's Manual
User's manuals - http://wiki.two-notes.com/
Dry/Dual Miking A dry, unprocessed signal is sent to the L output and A and B are mixed in mono
and sent to the R output
Dual Miking/Dry A dry, unprocessed signal is sent to the R output and A and B are mixed in mono
and sent to the L output.
4.2.3 Routing diagrams
The routing configuration can be changed in the Setup menu. The default routing mode is Amp to
Stereo.
Input Output
Stereo Dry/Dual Miking Dual Miking/Dry
“Amp”
“Input L”,
“S/PDIF L”,
“AES/EBU
L”
“Input R”,
“S/PDIF R”,
“AES/EBU
R”
“Line
L+Amp” Not compatible Not compatible
“AES/EBU”,
“S/PDIF”,
“Line”
Not compatible Not compatible
4.3 In the studio
The Torpedo Studio can be used in the studio for analog or digital recording. We shall concentrate
here on digital recording, but you can use the Line Outputs, for example to feed a microphone
preamplifier and add an extra “color” to your tone.

Last
update:
2017/11/08
15:11
torpedo_studio:torpedo_studio_user_s_manual http://wiki.two-notes.com/doku.php?id=torpedo_studio:torpedo_studio_user_s_manual
http://wiki.two-notes.com/ Printed on 2017/11/10 22:17
1. Electric guitar or bass
2. Guitar or bass amplifier
3. Torpedo Studio
4. DAW with Torpedo Remote
5. Audio interface
6. Master clock generator
(optional)
7. To other digital devices
8. Optional speaker cabinet
The Torpedo Studio acts here as an analog-to-digital converter, clocked by a wordclock and connected
to a DAW with the AES/EBU connection.
The USB connection gives you instant control over all the parameters of the Torpedo Studio. It is also
useful for uploading firmware updates, for preset backups, and for loading new simulations. The
standalone Torpedo Remote software allows you to address all of those functions.
For a working S/PDIF or AES/EBU connection, your audio interface can be
set to slave mode, while the Torpedo Studio is in master mode. However,
we recommend having the Torpedo Studio in slave mode if you wish to
control the digital sync from your DAW or a master clock. For more
information on your audio interface, please refer to its user’s manual.
An interesting option is to use the THRU output to feed a real speaker cabinet and do a miking of that
cabinet while recording with the Torpedo Studio, meaning having three different microphone and
cabinet combinations recorded at the same time.
4.4 On stage with an amplifier
The analog I/O of the Torpedo Studio offers great options on stage. For example, the analog outputs
(number 9 in figure “3.1.2 Rear panel”) can be connected at the same time both to the front mixing

2017/11/10 22:17 17/52 Torpedo Studio User's Manual
User's manuals - http://wiki.two-notes.com/
console and to a monitoring system (not shown here).
1. Electric guitar or bass
2. FX unit or pedals (front of
amp)
3. Guitar or bass amplifier
4. FX unit or pedals (loop of
amp)
5. MIDI controler
6. Stereo FX unit or pedals
7. Mixing console
8. PA
9. Optional speaker cabinet
Note that the musician can, with a MIDI floorboard, control the parameters (Control Change) and/or
the presets (Program Change) of the Torpedo Studio.
Playing in silence is a great feature, but at some point you have to listen to what you play! We
present a few options to use at home, in the studio or on stage:
Listen through the headphones out,1.
Listen on a guitar/bass cabinet plugged to the THRU output,2.
Having a local monitoring system on stage, by duplicating the LINE OUPUT with a mixer,3.
Having in-ear monitors or wedge speakers controlled by a sound engineer.4.
The THRU, AES/EBU, S/PDIF and LINE outputs can be used simultaneously.
4.5 On stage with a preamplifier
The Torpedo Studio offers two Line inputs to connect any kind of bass or guitar preamplifier, or any
other Line level instrument, including keyboards.

Last
update:
2017/11/08
15:11
torpedo_studio:torpedo_studio_user_s_manual http://wiki.two-notes.com/doku.php?id=torpedo_studio:torpedo_studio_user_s_manual
http://wiki.two-notes.com/ Printed on 2017/11/10 22:17
1. Electric guitar or bass
2. FX unit or pedals (front of
preamp)
3. Guitar or bass preamplifier
4. Stereo FX unit or pedals
(post preamp)
5. MIDI controler
6. Stereo FX unit or pedals
7. Mixing console
8. PA
4.6 Mixing a real cabinet miking and the Torpedo Studio
On stage or in the studio, you may need to feel the sound coming out of a cabinet. You can simply
connect a cabinet to the THRU output on the Torpedo Studio. You will be able to hear the sound
coming from the amp as usual, without any simulation or effect from the Torpedo Studio.
Once you plug a cabinet into the THRU output, the internal loadbox of the Torpedo Studio is
disconnected, and the amplifier is directly connected to the cabinet.

2017/11/10 22:17 19/52 Torpedo Studio User's Manual
User's manuals - http://wiki.two-notes.com/
On this figure, we have added an optional microphone to take the sound directly from the cabinet.
That way you can then get at the same time, in one take:
A traditional track with a real cabinet and a microphone1.
A simulated track using the Torpedo Studio library of speakers and microphones2.
If needed, a dry digital track with no simulation, for later re-miking (see the re-miking section3.
below)
This gives you a wide range of sonic possibilities, for you to make sure you get the tone you are
looking for!
When you plug a cabinet into the THRU output, the impedance of that
cabinet is the one that your amplifier sees. In other words, with a 4- Ohm
cabinet, you need to connect to the 4-Ohm output of your amplifier. In this
configuration, the loadbox inside the Torpedo Studio will be disconnected.
4.6.1 "Why am I hearing phase cancellation effects?" or fixing the latency-
related issues when using the analog I/Os on the Torpedo
The Torpedo Studio is a digital product. Digital means that the analog signal at the input will be
converted into digital, processed, then converted back to analog. The whole process takes a certain
amount of time, referred to as latency. This can be described as the time that it takes for the signal
to go from one input to one output. In the Torpedo Studio or VB-101, you can choose between two
different latency modes (normal - 5.063ms or Low - 3.064ms). Please note that when switching to
Low, the Overload parameter is no longer accessible, to save some CPU processing.

Last
update:
2017/11/08
15:11
torpedo_studio:torpedo_studio_user_s_manual http://wiki.two-notes.com/doku.php?id=torpedo_studio:torpedo_studio_user_s_manual
http://wiki.two-notes.com/ Printed on 2017/11/10 22:17
Mixing the output signal of the Torpedo Studio and a real cabinet miking will cause some
issues and possibly a comb filter effect if you do not compensate for the latency. To fix that,
you will need to add a delay of the latency value on the microphone track (as the microphone
sound will arrive “earlier” than the Torpedo sound), in the DAW or on the mixer, either in
(milli)seconds or in samples. In the following table we give the rounded number of samples
corresponding to the Normal or Low latency, in function of the sampling frequency of your project or
digital mixer:
Latency / Delay value (ms) 32KHz 44.1KHz 48KHz 88.2KHz 96KHz 176.4KHz 192KHz
Normal - 5,063 162 223 243 447 486 893 972
Low - 3,064 98 135 147 270 294 540 588
For alternative frequencies, please use the following formula: nsample = latency × fs, where nsample
is the number of samples and fs is the sampling frequency. A sampling frequency of 44.1KHz means
that you are recording (or playing) 44100 samples per second.
As the number of samples is an Integer, you will never match the exact latency value in milliseconds.
Here is how we recommend you proceed to minimize the phase cancellation effect:
Set a time length/number of samples as close as possible from the Torpedo Studio latency value
(with the help of the table)
mix the microphone and the Torpedo signals in mono
play around the value you set to find the maximum energy, the loudest signal
An alternative way to find the best value is to inverse the phase of one of the signals and search
for the maximum attenuation. When you find it, put the track back in phase and confirm that
you actually found the best value.
4.6.2 "What if I am using the digital I/Os on my Torpedo?" or how to figure
out the latency of the full digital system
It is not possible to determine the exact latency of your system as soon as you use the digital I/Os of
the Torpedo. Why is that? Because the digital product sending and/or receiving the signal to/from the
Torpedo have a latency at its I/Os too. It is not really the problem however. The issue is that the
processing time of the analog to digital converted on your soundcard will never be the same as the
processing time of its digital inputs.
In other words, the processing time on the audio interface will introduce another delay between the
signal coming form the analog and digital inputs, and we do not know that extra delay.
Can anything be done to remedy this? YES
The most common way to compensate for the latency when you don’t know its value is to zoom1.
on the waveforms and move the Torpedo record so it will be time-aligned with the microphone
record. To improve the precision, you can just “slap” your guitar or bass to produce a kind of a
square waveform. The shorter the slap (in time) and stronger, the more precise you will be and
it will be easier to find where you should focus your attention for the alignement. If you can’t be
as precise as you would want (because the DAW won’t allow sub-sample positioning), just add a
delay on the microphone track and play around to find the right value.
Some DAWs (such as Pro Tools) are able to measure and compensate for the outboard latency.2.