User Manual
ULTRA-DI PRO DI4000
Professional 4-Channel Active DI-Box
2 ULTRA-DI PRO DI4000 User Manual
Table of Contents
Important Safety Instructions ...................................... 3
Legal Disclaimer ............................................................. 3
Limited warranty ............................................................ 3
1. Introduction ............................................................... 4
1.1 Before you begin ................................................................. 4
1.2 Online registration ............................................................. 4
1.3 Control elements ................................................................ 5
2. Applications ............................................................... 5
2.1 Tapping signal from a (bass) guitar .............................. 5
2.2 Converting the output of a keyboard / DJ-mixer /
headphone plug ......................................................................... 5
2.3 Converting a microphone signal .................................. 6
2.4 Tapping a signal from a power amplieroutput .... 6
3. Installation ................................................................. 6
3.1 Rack mounting ..................................................................... 6
3.2 Mains connection .............................................................. 6
3.3 Audio connections ............................................................. 6
4. Specications ............................................................. 8
3 ULTRA-DI PRO DI4000 User Manual
9. Do not defeat the safety purpose of the polarized
TO BIND MUSICGROUP BY ANY EXPRESS OR IMPLIED
Important Safety Instructions
Terminals marked with this symbol carry
electrical current of su cient magnitude
to constitute risk of electric shock.
Use only high-quality professional speaker cables with
¼" TS or twist-locking plugs pre-installed. Allother
installation or modi cation should be performed only
by quali edpersonnel.
This symbol, wherever it appears,
alertsyou to the presence of uninsulated
dangerous voltage inside the
enclosure-voltage that may be su cient to constitute a
risk ofshock.
This symbol, wherever it appears,
alertsyou to important operating and
maintenance instructions in the
accompanying literature. Please read the manual.
Caution
To reduce the risk of electric shock, donot
remove the top cover (or the rear section).
No user serviceable parts inside. Refer servicing to
quali ed personnel.
Caution
To reduce the risk of re or electric shock,
do not expose this appliance to rain and
moisture. The apparatus shall not be exposed to dripping
or splashing liquids and no objects lled with liquids,
suchas vases, shall be placed on the apparatus.
Caution
These service instructions are for use
by quali ed service personnel only.
Toreduce the risk of electric shock do not perform any
servicing other than that contained in the operation
instructions. Repairs have to be performed by quali ed
servicepersonnel.
or grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding-type plug
has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. Ifthe
provided plug does not t into your outlet, consult an
electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or
pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
11. Use only attachments/accessories speci ed by
themanufacturer.
12. Use only with the
cart, stand, tripod, bracket,
or table speci ed by the
manufacturer, orsold with
the apparatus. When a cart
is used, use caution when
moving the cart/apparatus
combination to avoid
injury from tip-over.
13. Unplug this apparatus during lightning storms or
when unused for long periods of time.
14. Refer all servicing to quali ed service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power supply cord or plug
is damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed
to rain or moisture, does not operate normally, or has
beendropped.
15. The apparatus shall be connected to a MAINS socket
outlet with a protective earthing connection.
16. Where the MAINS plug or an appliance coupler is
used as the disconnect device, the disconnect device shall
remain readily operable.
UNDERTAKING OR REPRESENTATION. THIS MANUAL
IS COPYRIGHTED. NO PART OF THIS MANUAL MAY
BE REPRODUCED OR TRANSMITTED IN ANY FORM
OR BY ANY MEANS, ELECTRONIC OR MECHANICAL,
INCLUDING PHOTOCOPYING AND RECORDING OF ANY
KIND, FOR ANY PURPOSE, WITHOUT THE EXPRESS
WRITTEN PERMISSION OF MUSICGROUPIPLTD.
ALL RIGHTS RESERVED.
© 2013 MUSICGroupIPLtd.
Trident Chambers, Wickhams Cay, P.O. Box 146,
Road Town, Tortola, British Virgin Islands
LIMITED WARRANTY
For the applicable warranty terms and conditions
and additional information regarding MUSIC Group’s
Limited Warranty, please see complete details online at
www.music-group.com/warranty.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as
radiators, heat registers, stoves, or other apparatus
(including ampli ers) that produce heat.
LEGAL DISCLAIMER
TECHNICAL SPECIFICATIONS AND APPEARANCES
ARE SUBJECT TO CHANGE WITHOUT NOTICE AND
ACCURACY IS NOT GUARANTEED. BEHRINGER,
KLARKTEKNIK, MIDAS, BUGERA, AND TURBOSOUND
ARE PART OF THE MUSIC GROUP MUSICGROUP.COM.
ALL TRADEMARKS ARE THE PROPERTY OF THEIR
RESPECTIVE OWNERS. MUSICGROUP ACCEPTS NO
LIABILITY FOR ANY LOSS WHICH MAY BE SUFFERED
BY ANY PERSON WHO RELIES EITHER WHOLLY OR
IN PART UPON ANY DESCRIPTION, PHOTOGRAPH
OR STATEMENT CONTAINED HEREIN. COLORS AND
SPECIFICATIONS MAY VARY FROM ACTUAL PRODUCT.
MUSIC GROUP PRODUCTS ARE SOLD THROUGH
AUTHORIZED FULLFILLERS AND RESELLERS ONLY.
FULLFILLERSAND RESELLERS ARE NOT AGENTS OF
MUSICGROUP AND HAVE ABSOLUTELY NO AUTHORITY
4 ULTRA-DI PRO DI4000 User Manual
1. Introduction
Whether you are on the stage or in the studio, you often nd that you need
to connect an audio source to your mixing console, but you don’t have the
appropriate connectors. For example, only few keyboards feature balanced
outputs; guitars should not be connected directly to the console; and placing
a microphone in front of an amp is not always an ideal solution, because the
mic will pick up unwanted signals from other instruments, too. Low frequency
signals (e.g. produced by a bass guitar) are particularly dicult to handle using
thesetechniques.
“DI” is short for “Direct Injection”. A Direct Inject box allows you to use a
high-impedance, unbalanced source, e.g. the signal between guitar and guitar
amp, and feed it directly into an input channel on your console, withouthaving
to use a microphone. And that’s far from being all. There are plenty of situations
in which you’d like to input unbalanced source signals into your console,
andpossibly convert them to balanced signals before. As you can expect,
theDI4000 oers you a reliable solution.
The following explanations will give you an introduction to the complex
performance-impedance issue: impedance is dened as the dependence
of a device’s electrical resistance and phase response on the frequency
processed. Thus, impedance is one of the criteria that distinguish good DI
boxes from poor ones. Much like in a power amp and its connected speakers,
impedancedetermines the performance of the device. With a good power
amp, the load impedance will have little inuence on the maximum output
power, butit can considerably aect other properties. With a passive DI
box, the connected load impedances (ins and outs) alter the bandwidth,
frequencyresponse, distortion, etc. of the DI box.
By the way: there are two basic types of DI boxes, passive and active. Bothcan
be connected to one of the console’s mic inputs. Passive DI boxes oer the
advantage that they are less expensive than active models (less electronics,
no power supply), however, their performance depends on the connected
impedance. With a passive DI box connected, any impedance change on the
console side will also modif y the input impedance. The frequency response
will always depend on the impedances connected. Any passive DI box will only
perform properly with accurately specied impedances (high on the input side,
low at the output), i.e. it will only work in standard situations.
High-quality components and design
The philosophy behind BEHRINGER products guarantees a no-compromise circuit
design and employs the best choice of components. The op-amps, type 4580,
used in the ULTRA-DI PRO are chosen for their superior signal-to-noise ratio,
lowdistortion and linear performance. Additionally, the ULTRA-DI PRO uses high
quality resistors and capacitors with ver y tight tolerances, high-grade switches
as well as other selected components.
◊ This manual first describes the terminology used, so that you can fully
understand the ULTRA‑DI PRO and its functions. Please read the manual
carefully and keep it for future reference.
1.1 Before you begin
Your BEHRINGER ULTRA-DI PRO was carefully packed in the factory and
the packaging was designed to protect the unit from rough handling.
Nevertheless,werecommend 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, otherwise claims for
damage or replacement may not be granted. Shipping claims must be
made by the consignee.
The BEHRINGER ULTR A-DI PRO ts into one standard 19" rack unit of space.
Pleaseallow at least an additional 4" (10 cm) 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 ULTRA ‑DI PRO on high temperature devices such
as power amplifiers etc. to avoid overheating.
The mains connection of the ULTRA-DI PRO is made by using the supplied cable.
Itmeets all of the international safety certication requirements. Please make
sure that all units have a proper ground connection.
◊ Before you connect your ULT RA‑DI PRO to the mains, please make sure
that your local voltage matches the voltage required by the unit!
1.2 Online registration
Active DI boxes such as our ULTRA-DI PRO, however, do not suer from such
restrictions, because they use an amplier circuit to buer the input signal.
Sincethe ULTRA-DI PRO’s input impedance is ultra-high, the signal remains
unaected as it passes through the DI box. Additionally, the ULTRA-DI PRO
features balanced impedances on the output side, making the signal less
susceptible to hum and noise inter ference. In this way, the signal as source
impedance is completely independent of the console used (and vice versa),
whichmeans that the sound remains totally unaected. The ULTRA-DI PRO uses
our proven OT-1 transformer which ensures a clear and distortion-free sound and
linear frequency response. Additionally, the ULTRA-DI PRO comes with a built-in
power supply.
Future-oriented BEHRINGER technology
The ULTRA-DI PRO is based on SMD technology (Surface Mounted Devices).
Thesesubminiature components known from aerospace applications ensure both
extreme packing density and greater reliability.
Please register your new BEHRINGER equipment right after your purchase
by visiting http://behringer.com and read the terms and conditions of our
warrantycarefully.
Should your BEHRINGER product malfunction, it is our intention to have it
repaired as quickly as possible. To arrange for warranty service, please contact
the BEHRINGER retailer from whom the equipment was purchased. Shouldyour
BEHRINGER dealer not be located in your vicinity, you may directly contact
one of our subsidiaries. Corresponding contact information is included in the
original equipment packaging (Global Contact Information/European Contact
Information). Should your country not be listed, please contact the distributor
nearest you. A list of distributors can be found in the support area of our website
(http://behringer.com).
Registering your purchase and equipment with us helps us process your repair
claims more quickly and eciently.
Thank you for your cooperation!
5 ULTRA-DI PRO DI4000 User Manual
1.3 Control elements
The BEHRINGER ULTR A-DI PRO has four identical channels. The control elements
are identical on all channels.
(6) (7)
(2) (4)(1) (3) (5)
Fig. 1.1: Control and display e lements on the fr ont panel
(1) OUTPUT. This is the balanced output of the ULTRA-DI PRO. The connection
to the mixing desk should be made with a standard high-quality
balancedcable.
(2) +20 dB gain switch for pre-amplication of low level signals.
(3) Switchable HIGH CUT lters (8 kHz) for guitar applications (6 dB/Oct).
(4) With the PHASE REVERSE switch the input signal is reversed in phase
by180°.
(5) Use the GND LIFT switch to either connect the ground of input and output
or keep them completely separate. Depending on the grounding of the
connected devices linking or disconnecting will reduce hum or prevent
ground loops. GROUND LIFT on means no interconnection.
by fuses of the same type and rating. Some models allow for inserting the
fuse holder in two dierent positions, in order to switch over from 230 V
to 115 V operation, and vice versa. Please note that for 115 V operation
outside Europe, you need to use a fuse of a higher rating (see chapter3
“Installation”). Use the enclosed power cord to connect the unit to themains.
(12) To provide maximum exibility the ULTRA-DI PRO is also tted with an
unbalanced XLRINPUT to connect the source.
2. Applications
2.1 Tapping signal from a (bass) guitar
Microphone Input
Out
DI4000
In Link Out
(6) The OUTPUT LEVEL meter displays the output level of the Ultra-DI PRO in a
range from -24dB to +18dB.
(7) Use the POWER switch to turn on the BEHRINGER U LTRA-DI PRO.
(11)
(12)
(13)
(10)(8) (9)
Fig. 1.2: Rear pa nel elements of the B EHRINGER Ultra-DI PR O
(8) LINK. This is the unbalanced parallel output of the ULTRA-DI PRO.
Connectthis to the input of the backline or monitor amplier.
(9) INPUT. Connect the source to this ¼" jack to input the signal.
(10) and (13) The -20 dB ATTENUATION switches greatly increase the operating
range of the ULTRA-DI PRO. From the low level signals of a high impedance
guitar to the hot speaker terminals of a PA amplier. Depressingboth will
give 40 dB attenuation.
◊ Only use the ‑20 dB switches if you are sure the Ultra‑DI PRO is
clipping (overloading) and not your mic pre‑amp. Always use as little
attenuation as possible to get the best possible signal‑to‑noise ratio.
(11) FUSE HOLDER/VOLTAGE SELECTOR. Please make sure that the voltage
indicated on the unit matches your local voltage, before you attempt to
connect and operate the VINTAGER AC112. Blown fuses may only be replaced
Fig. 2.1: Guitar DI box Guitar Amp/Mixer
This gure shows the standard application of any Direct Inject box. The signal to
the amplier is unaected, it is just tapped o to be routed to the microphone
input of the mixer. Especially bass guitars benet from this application. It is
dicult to nd a microphone which handles high level low frequencies well and
with a linear frequency response. Using the ULTRA-DI PRO will give you clean and
crisp sound. Connect the ULTRA-DIPRO after any eects devices, so that their
eect will be heard over the PA system or on the recording.
2.2 Converting the output of a keyboard / DJ-mixer / headphone plug
Out OutIn In
Microphone Inputs Pan left and right
Fig. 2.2: DJ-m ixer 2 x D I box mixer
6 ULTRA-DI PRO DI4000 User Manual
This conguration can be used with a keyboard, DJ-mixer, headphone output,
drum kit or any (stereo or mono) line source. In all cases where you want to run
long lines, for instance to the FOH (Front Of House) desk. The signal can be linked
through to another amplier, if the keyboard player/ DJ/etc. wants to have a
monitor connected independent of the foldback mix. The ULTRA-DI PRO acts as
both a ground isolator and an unbalanced to balanced converter.
2.3 Converting a microphone signal
OutIn
Fig. 2.3: Connecting a microphone
Sometimes all that’s available (especially when all other mics are in use) is an
unbalanced high impedance microphone with an unbalanced jack. With the
ULTRA-DI PRO long cable runs to the console can be established without fear
of picking up noise and hum. Just plug the jack into the input and connect the
output to the console’s mic input.
3. Installation
Your BEHRINGER ULTRA-DI PRO was carefully packed in the factory and
the packaging was designed to protect the unit from rough handling.
Nevertheless,werecommend 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, otherwise claims for
damage or replacement may not be granted. Shipping claims must be
made by the consignee.
3.1 Rack mounting
The BEHRINGER ULTRA-DI PRO ts into one standard 19" rack unit of space.
Pleaseallow at least an additional 4" depth for the connectors on the back panel.
◊ Be sure that there is enough air space around the unit for cooling and
please do not place the ULTRA‑DI PRO on high temperature devices such
as power amplifiers etc. to avoid overheating.
3.2 Mains connection
The mains connection of the ULTRA-DI PRO is made by using a mains cable
and a standard IEC receptacle. It meets all of the international safety
certicationrequirements.
◊ Please make sure that all units have a proper ground connection.
For your own safety, it is advisable not to remove the ground
connection within the units or at the supply, or fail to make this
connection at all.
2.4 Tapping a signal from a power
amplieroutput
When no line out is available it is possible to connect an amplier output directly
to the DI4000 (for example, recording direct from a guitar amplier, TV-speaker,
etc). It is possible to connect the output, i.e. an extra speaker output, of up to
3000 Watts to the ULTRA-DI PRO without fear of overloading. Pay attention to the
two -20 dB buttons on the ULTRA-DI PRO! Both must be depressed if an amplier
output is connected to the DI4000 input.
+red or positive post
-black or negative post
Out
In
-20 / -40 dB!
Fig. 2.4: Connec tion to an amplier o utput
◊ Always make sure the GROUND LIFT is on (no ground link)
when connecting to speaker terminals. This prevents accidental
short‑circuiting of the amplifier output. Also make sure the tip of the
input jack is connected to the red terminal and that the metal housing
of the DI4000 has no contact with other equipment.
Before you switch on the unit, check that it is congured to match your AC
mains voltage requirements. If it does not comply, then it is necessary to switch
the operating voltage to the correct supply requirements BEFORE turning on
the unit, otherwise the unit could be severely damaged. You will nd this
combined fuse holder/voltage selector at the back, adjacent to the IEC receptacle.
IMPORTANT:This does not apply for general export models which are
built for one operating voltage only.
The AC voltage selection is dened by the position of the fuse holder. If you
intend to change the operating voltage, remove the fuse holder and twist it
by 180 degrees before you reinsert it. Matching the two markers shows the
selectedvoltage.
◊ If the unit is switched to another operating voltage, the fuse rating
must be changed. See the technical specifications in the appendix.
A safety fuse protects the unit from serious defects. If the fuse blows, this is a
warning sign and always indicates that the circuit is overloaded. The fault must
always be repaired before the fuse is replaced. If the safety fuse is faulty and
needs replacing after the unit is repaired, please make sure that you replace it
only with the identical type and rating. NEVER use fuses of dierent ratings or
cover faulty fuses with aluminium foil. This can cause re and electric shocks and
will endanger your life and the lives of others.
3.3 Audio connections
As standard, the BEHRINGER ULT RA-DI PRO is installed with transformerbalanced outputs. This transformer features automatic hum and noise
reduction for balanced signals and thus allows for trouble-free operation,
even at high operating levels. Externally induced mains hum etc. will be
eectivelysuppressed.
◊ Please ensure that only qualified persons install and operate the
ULTR A‑DI PRO. During installation and operation the user must have
sufficient electrical contact to earth. Electrostatic charges might affect
the operation of the ULTRA‑DI PRO!
7 ULTRA-DI PRO DI4000 User Manual
tupnIelbaCtuptuO
Pin 1
Pin 2 = (+) Signal
12
3
Pin 3 = (-) Signal
Fig. 3.1: Compensation of interference with balanced connections
Unbalanced use of mono ¼" jack plugs
strain relief clamp
sleeve
tip
sleeve
(ground/shield)
tip
(signal)
(+) Signal + Hum
(-) Signal + Hum
RFI and Hum
Shield
Ground
1
2
3
Positive
Negative
Balanced use with XLR connectors
12
3
input
1 = ground/shield
2 = hot (+ve)
3 = cold (-ve)
1
2
3
output
For unbalanced use, pin 1 and pin 3
have to be bridged
(+) Hum + Signal
(-) Hum + Signal
2 x Signal
= Signal + 6 dB
Balanced use of stereo ¼" jack plugs
strain relief clamp
sleeve
ring
tip
sleeve
ground/shield
ring
cold (-ve)
tip
hot (+ve)
For connection of balanced and unbalanced plugs,
ring and sleeve have to be bridged at the stereo plug.
Fig. 3.2: Di erent plug type s
8 ULTRA-DI PRO DI4000 User Manual
4. Specications
Audio Input
Connectors XLR and ¼" jack
Type DC-decoupled, unbalanced input
Impedance max. 220 kOhm
Max. input level +20/+40/+60 dBu
Audio Output
Connectors XLR
Type transformer-balanced output stage
Impedance 600 Ohms balanced
Max. output level +20dBu
System Specications
Bandwidth (100 kOhm) 23Hz to 120 kHz (±3 dB)
Bandwidth (600 Ohm) 23Hz to 27 kHz (±3 dB)
Bandwidth (High Cut) 10 Hz to 8 kHz (±3 dB)
Noise -95 dBu
Power Supply
Mains Voltages
USA/Canada 120 V~, 60Hz
U.K./Australia 240 V~, 50Hz
Europe 230 V~, 50Hz
General export model 100 - 120 V~, 200 - 240 V~, 50 - 60Hz
Power consumption max. 10 Watts
Fuse 100 - 120 V~: T 200 mA H
200 - 240 V~: T 100 mA H
Mains connection standard IEC receptacle
Physical
Dimension 1 ¾ x 19 x 8 ½"
44.5 x 483 x 215 mm
Net weight 5.9 lbs / 2.7 kg
Shipping weight 7.9 lbs / 3.6 kg
BEHRINGER i s constantly str iving to maintain the h ighest profess ional standards. A s a result of these e ffort s,
modific ations may be made f rom time to time to exi sting product s without prio r notice. Specif ications and
appearance m ay differ fro m those listed or illus trated.
We Hear You
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