Behringer Virtualizer Pro DSP1024P User manual

User´s Manual
Version 1.0 August 2000
www.behringer.com
ENGLISH
VIRTUALIZER
®
PRO DSP1024P

2
VIRTUALIZER PRO D P1024P
This symbol, wherever it appears, alerts
you to the presence of uninsulated
dangerous voltage inside the enclosure
- voltage that may be sufficient to con-
stitute a risk of shock.
This symbol, wherever it appears, alerts
you to important operating and mainte-
nance instructions in the accompanying
literature. Read the manual.
SAFETY INSTRUCTIONS
CAUTION: To reduce the risk of electrical shock, do not remove
the cover (or back). No user serviceable parts inside;
refer servicing to qualified personnel.
WARNING: To reduce the risk of fire or electrical shock, do not
expose this appliance to rain or moisture.
DETAILED SAFETY INSTRUCTIONS:
All the safety and operation instructions should be read before the appliance is operated.
Retain Instructions:
The safety and operating instructions should be retained for future reference.
Heed Warnings:
All warnings on the appliance and in the operating instructions should be adhered to.
Follo instructions:
All operation and user instructions should be followed.
Water and Moisture:
The appliance should not be used near water (e.g. near a bathtub, washbowl, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool etc.).
Ventilation:
The appliance should be situated so that its location or position does not interfere with its proper ventilation.
For example, the appliance should not be situated on a bed, sofa rug, or similar surface that may block the
ventilation openings, or placed in a built-in installation, such as a bookcase or cabinet that may impede the
flow of air through the ventilation openings.
Heat:
The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other
appliance (including amplifiers) that produce heat.
Po er Source:
The appliance should be connected to a power supply only of the type described in the operating instructions
or as marked on the appliance.
Grounding or Polarization:
Precautions should be taken so that the grounding or polarization means of an appliance is not defeated.
Po er-Cord Protection:
Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed
upon or against them, paying particular attention to cords and plugs, convenience receptacles and the point
where they exit from the appliance.
Cleaning:
The appliance should be cleaned only as recommended by the manufacturer.
Non-use Periods:
The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.
Object and Liquid Entry:
Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.
Damage Requiring Service:
The appliance should be serviced by qualified service personnel when:
- The power supply cord or the plug has been damaged; or
- Objects have fallen, or liquid has been spilled into the appliance; or
- The appliance has been exposed to rain; or
- The appliance does not appear to operate normally or exhibits a marked change in performance; or
- The appliance has been dropped, or the enclosure damaged.
Servicing:
The user should not attempt to service the appliance beyond that is described in the Operating Instructions. All
other servicing should be referred to qualified service personnel.

3
VIRTUALIZER PRO D P1024P
FOREWORD
Dear Customer,
Welcome to the team of VIRTUALIZERPRO users and thank you very much for expressing your confidence
in BEHRINGER products by purchasing this unit.
It is one of my most pleasant tasks to write this letter to you, because it is the culmination of many months of
hard work delivered by our engineering team to reach a very ambitious goal: making an outstanding device
better still. The VIRTUALIZER PRO has for quite a long time been a standard tool used by numerous studios
and P.A. rental companies. The task to improve one of our best-selling products certainly meant a great deal
of responsibility, which we assumed by focusing on you, the discerning user and musician. It also meant a lot
of work and night shifts to accomplish this goal. But it was fun, too. Developing a product usually brings a lot
of people together, and what a great feeling it is when everybody who participated in such a project can be
proud of what weve achieved.
It is our philosophy to share our joy with you, because you are the most important member of the BEHRINGER
family. With your highly competent suggestions for new products youve greatly contributed to shaping our
company and making it successful. In return, we guarantee you uncompromising quality (manufactured under
I O9000 certified management system) as well as excellent technical and audio properties at an extremely
favorable price. All of this will enable you to fully unfold your creativity without being hampered by budget
constraints.
We are often asked how we can make it to produce such high-grade devices at such unbelievably low prices.
The answer is quite simple: its you, our customers! Many satisfied customers means large sales volumes
enabling us to get better conditions of purchase for components, etc. Isnt it only fair to pass this benefit back
to you? Because we know that your success is our success, too!
I would like to thank all people whose help on Project VIRTUALIZERPRO has made it all possible. Everybody
has made very personal contributions, starting from the designers of the unit via the many staff members in our
company to you, the user of BEHRINGER products.
My friends, its been worth the trouble!
Thank you very much,
Uli Behringer

4
VIRTUALIZER PRO D P1024P
DSP1024P
VIRTUALIZERPRO
Ultra-high performance Digital Multi-Effects Processor powered by a 24-bit high-speed Digital Signal Processor (DSP
sWave Adaptive Virtual Room reverb algorithms calculated from precise mathematical room models to give
you ultra-natural reverb effects
s32 breathtaking Reverb, Chorus, Flanger, Delay, Pitch hifter, Vocoder, Rotary peaker effects and more
sMore than 700 effects variations plus two individual parameters and separate low and high EQ section
sTwo digital processing engines offer you independent or coupled effects on left and right channels
sTrue stereo processing performance allows separation of left and right channels in the stereo field for
open-sounding enhancement of the sound sources
sFree VIRTUALIZER design software allows for total remote control via PC (download at www.behringer.com)
s24-bit A/D and D/A converters with 64/128 times oversampling for ultra-high headroom and resolution
sInternal 24-bit processing with professional 46 kHz sampling rate
servo balanced inputs and outputs on XLR and 1/4" TR jack connectors for high signal integrity
s100 user preset memories to store programs for instant recall
sAccurate eight-segment LED level meters simplify level setting for optimum performance
sFuture-proof software-upgradeable architecture
sFull MIDI capability allows real-time parameter control and program selection
sHigh-quality components and exceptionally rugged construction ensures long life and durability
sInternal power supply design for professional application
sManufactured under I O9000 certified management system

5
VIRTUALIZER PRO D P1024P
TABLE OF CONTENTS
1. INTRODUCTION..................................................................................................................... 6
1.1 The design concept ......................................................................................................................... 6
1.2 Before you begin ............................................................................................................................. 7
1.3 Control elements ............................................................................................................................. 7
1.4 The effect algorithms ..................................................................................................................... 10
1.4.1 Reverb and delay algorithms ................................................................................................ 11
1.4.2 pecial effects .................................................................................................................... 12
1.4.3 Modulation and pitch shifter effects ..................................................................................... 12
1.4.4 Effect algorithm combinations (multi-effects programs) ........................................................ 12
1.4.5 Dual-mode effects algorithms .............................................................................................. 13
2. OPERATION .......................................................................................................................... 14
2.1 Effects structure ............................................................................................................................ 14
2.2 electing presets .......................................................................................................................... 14
2.3 Editing programs ........................................................................................................................... 15
2.4 aving programs ........................................................................................................................... 15
2.5 MIDI control................................................................................................................................... 15
3. APPLICATIONS ..................................................................................................................... 17
3.1 Level setting .................................................................................................................................. 17
3.2 Using the VIRTUALIZERPRO in the aux bus ................................................................................ 17
3.3 Using the VIRTUALIZERPRO in the insert path ............................................................................ 18
3.4 Using the VIRTUALIZERPRO as an effects device for instruments ............................................... 19
3.5 Using the VIRTUALIZERPRO in a MIDI system ............................................................................ 20
3.6 aving data via MIDI ...................................................................................................................... 20
4. TECHNICAL BACKGROUND .............................................................................................. 21
4.1 Reverberation and reflection .......................................................................................................... 21
4.1.1 Reverberation chambers ...................................................................................................... 22
4.1.2 pring and plate reverb........................................................................................................ 22
4.1.3 Digital reverb ....................................................................................................................... 23
5. INSTALLATION ..................................................................................................................... 24
5.1 Mains connection .......................................................................................................................... 24
5.2 Audio connections ........................................................................................................................ 24
5.3 MIDI connections .......................................................................................................................... 25
5.4 Operating Level switch .................................................................................................................. 26
6. APPENDIX ............................................................................................................................. 26
6.1 Parameter overview ....................................................................................................................... 26
6.2 Delay values / increments for presets 10 and 11 ........................................................................... 27
6.3 MIDI Implementation ..................................................................................................................... 28
6.4 Default settings ............................................................................................................................. 29
7. SPECIFICATIONS ................................................................................................................. 30
8. WARRANT ........................................................................................................................... 31

6
VIRTUALIZER PRO D P1024P
1. INTRODUCTION
With the BEHRINGER VIRTUALIZERPRO you have purchased a very powerful multi-effects processor which
offers both first-class reverb sounds and various other effect algorithms. Although you will find a high number of
effect types  32 newly developed effect types with more than 700 variations  the VIRTUALIZERPRO can be
operated easily and intuitively with its logically structured user interface.
To generate reverberation that is very natural in character, we at BEHRINGER developed innovative virtual
acoustics algorithms which allow for computing all room and reverb parameters with absolute pro-level quality
and a highly natural sound character.
Despite extensive computing work which is done in the D P1024P by a dual-engine 24-bit processor, the
VIRTUALIZERPRO can be operated easily and conveniently. All parameter edits are performed with the jog
wheel (rotary control). 100 presets are available to store user-defined programs.
However, the D P1024P is by no means limited to excellent reverb and delay programs. In addition to the
simulation of classic plate reverbs, the VIRTUALIZERPRO gives you extraordinary modulation effects (such
as chorus and flanger), plus a few special-purpose variants, e.g. a musical pitch shifter as well as tremolo and
rotary speaker simulations. With the vocoder and vocal distortion effect programs, you even have ultra-modern
effects available that the D P1024P generates with absolute realism.
A very special feature are the high and low filters which can be freely edited and directly selected in each
preset. With these filters you can fine-tune the sound of your presets to match any given room characteristics
 a time saving feature especially for live applications, where every second counts. Additionally, the D P1024P
offers delay times of up to 5.1 seconds in stereo mode. Not only will the VIRTUALIZERPRO convince you with
its logical and easy-to-operate user interface, its technical features, too, are quite impressive. The following
criteria ensure the pro-level processing of audio signals:
sExtremely low-noise and high-precision 24-bit AD/DA converters.
sA professional sampling rate of 46 kHz ensures a high signal resolution with a frequency response ranging
from 20 Hz to 20 kHz.
sThe 24-bit processor features two sections (dual-engine software), each processing one independent audio
channel.
sLike all BEHRINGER products, the D P1024P uses only high-grade components and circuitry.
With its complete MIDI implementation the D P1024P can be integrated in any MIDI system. Our free
VIRTUALIZERdesign MIDI software editor (available at www.behringer.com) enables you to program the
VIRTUALIZERPRO from your personal computer, and the MIDI interface allows for transmitting data from the
D P1024P and store them on an external storage medium. For example, you can use sys-ex dumps to send
all presets and settings to your sequencer program and reload them from there whenever you want.
+The follo ing instructions manual ill introduce you to the BEHRINGER VIRTUALIZERPRO
and its various functions. After reading the manual carefully, make sure it is al ays on hand
for future reference.
1.1 The design concept
The philosophy behind BEHRINGER products guarantees a no-compromise circuit design and employs the best
choice of components. Top-quality 24-bit AD/DA converters which belong to the best components
available owing to its outstanding specifications and excellent sonic characteristics. Two 24-bit D Ps are used
as the heart of the VIRTUALIZERPRO. These perform the precise calculations needed for the processing of the
complex algorithms. Additionally, the VIRTUALIZERPRO uses high quality resistors and capacitors with very
tight tolerances, high-grade switches, low-noise operational amplifiers as well other selected components.
The VIRTUALIZERPRO D P1024P uses MD technology ( urface Mounted Device). These subminiature
components known from aerospace technology allow for an extreme packing density, plus the units reliability
could be improved. Additionally, the unit is manufactured in compliance with a I O9000 certified management
system.
1. INTRODUCTION

7
VIRTUALIZER PRO D P1024P
1.2 Before you begin
Your BEHRINGER VIRTUALIZERPRO was carefully packed in the factory and the packaging was designed to
protect the unit from rough handling. Nevertheless, we recommend that you carefully examine the packaging
and its contents for any signs of physical damage, which may have occurred in transit.
+If the unit is damaged, please do not return it to us, but notify your dealer and the shipping
company immediately, other ise claims for damage or replacement may not be granted.
Shipping claims must be made by the consignee.
The BEHRINGER VIRTUALIZERPRO fits into one standard 19" rack unit of space (1 3/4"). Please allow at
least an additional 4" depth for the connectors on the back panel.
Be sure that there is enough space around the unit for cooling and please do not place the VIRTUALIZERPRO
on high temperature devices such as power amplifiers etc. to avoid overheating.
+Before you connect your VIRTUALIZERPRO to the mains, please make sure that your local
voltage matches the voltage required by the unit.
The mains connection of the VIRTUALIZERPRO is made by using a mains cable and a standard IEC
receptacle. It meets all of the international safety certification requirements. Please make sure that all units
have a proper ground connection.
+Please make sure that all units have a proper ground connection. For your o n safety, do not
remove the ground connection ithin the units or at the supply, or fail to make this connection
at all.
+Please ensure that only qualified persons install and operate the VIRTUALIZERPRO. During
installation and operation the user must have sufficient electrical contact to earth. Electro-
static charges might affect the operation of the VIRTUALIZERPRO!
ee chapter 5 IN TALLATION for further details.
As a standard the audio inputs and outputs on the BEHRINGER VIRTUALIZERPRO are fully balanced. If
possible, connect the unit to other devices in a balanced configuration to allow for maximum interference
immunity. The automatic servo function detects unbalanced connections and compensates the level difference
automatically (6 dB correction).
The MIDI links (IN/OUT/THRU) are made over standardized DIN patch cords. The data communication is
isolated from ground by opto-couplers.
1.3 Control elements
Fig. 1.1: VIRTUALIZERPRO front panel
The BEHRINGER VIRTUALIZERPRO is equipped with ten parameter keys, a jog wheel (rotary control), an
LED display and a power switch. Each of the two fully independent channels can be monitored with an 8-digit
LED meter.
1. INTRODUCTION

8
VIRTUALIZER PRO D P1024P
Fig. 1.2: Displa section of the DSP1024P
1The two LED CHAINS display the input signal level indB, referenced to the internal digital maximum.
Please note that the nominal level of the VIRTUALIZERPRO can be selected with the +4dBu/-10dBV
switch located on the back panel.
2The EFFECT TABLE gives you an overview of the 32 different effect algorithms.
3After power-up, the LED DISPLAY shows the number of the preset last used. This clearly legible, 2½
digit numeric display has plus/minus indicators to show that parameters are being incremented or
decremented in Edit mode.
Fig. 1.3: Function ke s and jog wheel
4With the JOG WHEEL, a continuous rotary control, you can freely edit the selected parameters. Turn
the wheel clockwise to increase the values, or counterclockwise to reduce them. As long as none of the
edit functions to the right of the JOG WHEEL have been selected, you can use the wheel to select a
program directly, which is shown by a dot lit up in the DI PLAY. While this dot is on, you can select a
program though its settings will not take immediate effect. When the JOG WHEEL has not been touched
for at least one second, the LED in the DI PLAY disappears and the program will be loaded.
5Use the EFFECT key to directly select one of the 32 basic effect algorithms with the jog wheel.
+Whenever a ne algorithm is selected, all parameters are reset to default values. See table
6.4 in the appendix.
6The VARIATION key allows you to select an alternative variation of each effect algorithm activating a
different setup of the numerous internal effect parameters. With this feature you can extensively
manipulate the effect sound within a very wide range.
7Use the ENGINEL key to select the left audio channel for true-stereo effects. Many effects may have
different ENGINEL and ENGINER parameters available through EDITA and EDITB. Where to find
which parameter can be seen from the parameter list printed on the top of the unit.
1. INTRODUCTION

9
VIRTUALIZER PRO D P1024P
8Use the ENGINER key to select the right audio channel (similar to : ENGINEL). If you wish to
process the left and right audio channels simultaneously (couple mode), press both ENGINE keys
together. In couple mode both ENGINE LEDs light up. Whenever you edit one of the two audio
channels and then switch to couple mode, the parameters of the active channel will be copied to the
other; i.e if you press ENGINE L before R, left will be copied to right. When parameters cannot be
adjusted separately in a specific algorithm, the D P1024P switches to couple mode automatically.
9In each preset you can edit at least two parameters in addition to the preset variation. Use the EDITA
key to select the first parameter. The exact parameter assignment can be seen from the parameter list
printed on top of the unit.
10 The EDITB key allows you to modify the second parameter as required.
11 To give your programs the finishing touch, the VIRTUALIZERPRO incorporates two filters. Use the
EQ HI key to raise or lower the high-frequency portions of the effect program.
12 The EQ LO key activates a filter which processes the low-frequency portions of your preset.
13 The IN/OUT key enables you to bypass the D P1024P. The green LED lights up as soon as the
VIRTUALIZERPRO is activated. Depending on the Mix mode adjusted (see below), this key can also be
used to activate the Mute function. Additionally, the green LED starts flashing whenever MIDI data are
being received.
14 Use the STORE key to save the edited program to a user preset as shown in the display. 100 user
presets are available on the D P1024P. Press the key once, select a memory location (number) with
the JOG WHEEL, then press the key again to store the preset.
15 Use the POWER switch to switch the VIRTUALIZERPRO on or off.
Key combinations
To protect the D P1024P against user errors, three important edit commands have been implemented as a
series of key combinations. For example, in normal operating modes, the presets cannot be reset to their
factory defaults, so as to secure your own programs as safely as possible. Please proceed as follows to
reinitialize the preset default settings:
sKeep the keys EFFECT and TORE pressed before po ering up the VIRTUALIZERPRO. Then switch
on the D P1024P and keep the two keys pressed for about two seconds. The program numbers are
counted up and reset to their original default settings.
The VIRTUALIZERPRO provides two methods to mix the input and the effect signals (External Mix and Internal
Mix modes). elect External Mix mode to use the D P1024P with a mixing console: in this mode all presets
are set to 100% effect intensity, i.e. you can use the aux return busses of your console to add the processed
signal to the original signal. In External Mix mode the IN/OUT key is used to bypass the unit. Heres how to
enter External Mix mode:
sWith the unit switched on, press the Mix mode key combination, i.e. the keys EQ LO and EQ HI. The
VIRTUALIZERPRO enters Mix mode. When the display shows two dashes, the D P1024P is in External
Mix mode, and when a figure is displayed, Internal Mix mode is selected. To toggle between the two
modes, simply press both EQ keys for about 2 seconds.
In Internal Mix mode you can use the jog wheel to freely select the effect intensity in each preset within a range
from 0% to 100%, a highly useful feature, for instance, to insert the D P1024P in the effect loop of a guitar
amp. Good results can be achieved with settings between 20% and 50%.
Another key combination can be used to enter MIDI mode. With the VIRTUALIZERPRO switched on, proceed
as follows:
sKeep the keys IN/OUT and TORE pressed for about two seconds, the D P1024P automatically enters
MIDI mode. Use the IN/OUT key to step through the various MIDI parameters. Press any other key to quit
MIDI mode.
1. INTRODUCTION

10
VIRTUALIZER PRO D P1024P
Fig. 1.4.: Back panel connectors and control elements
16 Use the OPERATING LEVEL switch to adapt the VIRTUALIZERPRO to different operating levels. You
can select a -10 dBV semi-pro level used for home recording and a +4 dBu level used in professional
studios. The level indicators on the front panel are automatically adapted to read the selected nominal
level, i.e. an optimum operating range of the meters is always guaranteed.
17 These are the VIRTUALIZER PROs analog INPUTS. The VIRTUALIZERPRO has both XLR and 1/4"
jack inputs and outputs. Each XLR and jack set are wired parallel and can be used either balanced and
unbalanced.
18 These are the VIRTUALIZERPROs analog OUTPUTS. Also on balanced or unbalanced XLR or 1/4"
jacks.
19 SERIAL NUMBER. Please take the time to have the warranty card filled out completely and return it
within 14 days after the date of purchase, so as to be entitled to benefit from our extended warranty. Or
use our online registration option available on the World Wide Web under www.behringer.com.
20 These are the VIRTUALIZERPROs MIDI connectors (MIDI OUT / THRU / IN). Total remote control is
possible via MIDI.
21 This is the MAINS CONNECTOR / FUSE HOLDER / VOLTAGE SELECTOR. Before you connect the
unit, please make sure that the displayed voltage corresponds to your Mains supply. Please note that
the AC voltage selection is defined by the position of the Fuse Holder. If you intend to change the
operating voltage, remove the Fuse Holder and turn it by 180 degrees before you reinsert it. Matching the
two markers monitors the selected voltage. Please note that, depending on the mains voltage supplied
to the unit, the correct fuse type and rate must be installed (see chapter 7  PECIFICATION ). Please
use the enclosed mains cable to connect the unit to the mains power supply.
+Please note that not all appliances can be used ith different mains voltage ratings. Please
check the description on the back of the unit and the box.
1.4 The effect algorithms
In a digital effects device all effect programs are based on algorithms computed by a Digital ignal Processor
(D P). How does this work? A D P can perform an enormous number of binary computations in a minimum
amount of time. The binary computations used to generate an effect as part of a program are determined by a
so-called algorithm which represents a rule for computing numerical values that are exactly specified for each
effect type. For example, reverb algorithms differ from chorus algorithms in their programming. Plainly
speaking: each effect is based on a specific algorithm which processes the input signal (converted from analog
to digital before). All of this work is done by the D P. Once the effect has been generated and added to the
input signal, the digital music signal is converted back to analog by means of a D/A converter.
The VIRTUALIZERPRO permits the change of as many as five parameters which influence the sound in
different ways. This means that for some algorithms the parameters are chosen by using key combinations
with ENGINEL and ENGINER. In these cases a combination of ENGINEL and ENGINER with the EDITA
and EDITB key will not mean that only one channel is affected. The combination EDITAENGINEL is a
different parameter than the combination EDITAENGINER, these parameters will be changed on both
channels. With a reverb effect (like PRG 1) EDIT BENGINER does not mean that the right audio channel is
processed, but that the second EDIT B parameter (with PRG 1: High Multiply) is adjusted.
The only exception is the DUAL MONO (PARALLEL) effects, which produce another effect in the left channel
from the right channel.
In those cases EDITB  ENGINEL or EDITB  ENGINER means that you select EDITB and the left or right
engine. If we only state EDITB for instance then the selection of the left or right engines does not play a role.
1. INTRODUCTION