ART Zdirect om_zdirect.pdf

Professional Passive Direct Box

Artcessories

User's Manual

IMPORTANT SAFETY INSTRUCTION – READ FIRST

This symbol, whenever it appears,
alerts you to the presence of
uninsulated dangerous voltage
inside enclosure-voltage that may be
sufficient to constitute risk of shock.

Read Instructions: Retain safety and operating instructions for
future reference. Heed all warnings printed here and on the
equipment. Follow the operating instructions printed in this user
guide.

Do not open: There are no user serviceable parts inside. Refer
any service work to qualified technical personnel only.

Grounding: Only connect the unit to equipment with properl y
grounded mains power. Do not defeat the grounding and
polarization means of the power cord plug of the connected
equipment. Do not remove or tamper with the ground
connection on the power cord of the connected equipment.

Environment: Protect from excessive dirt, dust, heat, and
vibration when operating and storing. Avoid tobacco ash, drink
spillage and smoke, especially that associated with smoke
machines.

Handling: Protect the controls from damage during transit. Use
adequate padding if you need to ship the unit. To avoid injury to
yourself or damage to the equipment, take care when lifting,
moving or carrying the unit.

Servicing: Refer servicing to qualified technical personnel.
Installation: Install the unit in accordance with the instructions

printed in the user guide.

This symbol, whenever it appears,
alerts you to important operating
and maintenance instructions in
the accompanying literature.
Please read the manual.

INTRODUCTION:

Thanks for purchasing Applied Research and
Technology’s Zdirect. The Zdirect is a high qu ality tota lly
passive interface that lets you connect instrument, line,
or speaker level signals to a mixer or other balanced
input thru a high performance audio isolation
transformer. The high impedance single-ended ¼-inch
input is converted by the transformer into an isolated
balanced low impedance signal source. The Zdirects
audio transformer has an extremely flat and wide
frequency response and can handle high signal levels
while still maintaining an isolated balanced low
impedance output. This gives the Zdirect a very clean
and neutral sound with a wide variety of signal sources
and over long signal runs in high noise environments.

INSTALLATION AN OPERATIONS:

The Input Attenuator switches allow for a wide range of
signal levels and the Input Thru jack allows for tapping
off of your signal chain. The Ground Lift switch lets you
totally separate the input and output signal grounds,
when appropriate, to isolate two systems, thereby
reducing hum and ground-loop noise.

What further sets the Zdirect apart from other “DI” boxes
are its extended features and versatility.

We have added a switchable low pass Filter that cuts
out all very high frequency interference. This Bessel
filter on the output is placed out of the audio range and
is primarily intended to reduce radio frequency
interference before it gets into the main system. The
filter is also very effective in reducing any digital
computer noise artifacts when using the Zdirect as an
interface between a computer based audio workstation
and your monitors.

The Phase Invert switch, while not normally included
with your run of the mill D.I. box, has been added to
allow you to switch signal polarity right at the source.
This feature is especially handy when you are
combining a direct tap with a microphone feed in the
mix.

The compact black anodized all aluminum case and it’s
passive design allow the Zdirect to provide years of
trouble free service in Live Sound, Permanent/Fixed
Install, D.J., and virtually any PA application. It’s full
feature set, rugged construction, and high-end
specifications make the Zdirect the obvious choice.

SPECIFICATIONS:

Frequency Response: 10Hz –50kHz, +/-.5dB @

+4dBu
THD: .01% Typical @ 1kHz,

+18dBu,

<.05% @ 100Hz, +18dBu
Input Connections: ¼ - inch TRS unbalanced,
50k Ohm
Output Connection: XLR male balanced,
600 Ohm
Filter Type/Response: Switchable, Low Pass, -3dB
@ 30kHz
Input Attenuation: Switchable, (0dB, -20dB, -
40dB)

Output Phase: Switchable, Normal/Invert
Ground Lift: Switchable, fully isolates

inputs from chassis and
output.
Dimensions HxDxW(in): 1.75 x 4.2 x 3.5
HxDxW (mm): 44.5 x 107 x 89

Weight (lbs/kg): .75 / .34

WARRANTY INFORMATION:

Limited Warranty (USA only)

Applied Research and Technology will pr ovide warranty
and service for this unit in accordance with the following
warrants:
Applied Research and Technology, (ART) warrants to
the original purchaser that this product and the
components thereof will be free from defects in
workmanship and materials for a period of three years
from the date of purchase. Applied Research and
Technology will, without charge, repair or replace, at its
option, defective product or component parts upon
prepaid delivery to the factory service department or
authorized service center, accompanied by proof of
purchase date in the form of a valid sales receipt.

Exclusions

This warranty does not apply in the event of misuse or
abuse of the product or as a result of unauthorized
alterations or repairs. This warranty is void if the serial
number is altered, defaced, or removed.
ART reserves the right to make changes in design or
make additions to or improvements upon this product
without any obligation to install the same on products
previously manufactured.
ART shall not be liable for any consequential damages,
including without limitation damages resulting from loss
of use. Some states do not allow limitations of incidental
or consequential damages, so the above limitation or
exclusion may not apply to you. This warrant y gives you
specific rights and you may have other rights, which

vary, from state to state. The warranty terms listed
above are only valid within the United States of America.
For units purchased outside the United States, an
authorized distributor of Applied Research and
Technology will provide service. For information on
warranty and service policies outside of the U.S., please
contact your local distributor.

Please fill in the following information for your reference:

Date of purchase: _________________________
Purchased from: _________________________

SERVICE:

The following information is provided in the unlikely
event that your unit requires service.

1. Be sure that the unit is the cause of the problem.

Check to make sure that the unit has power
supplied, that all cables are connected correctly,
and that the cables themselves are in working
condition. You may want to consult with your dealer
for assistance in troubleshooting or testing your
particular configuration.

2. If you believe that the ART unit is at fault, go to

www.artproaudio.com. Select "Support", then

"Return Authorization Request" to request a return
authorization number.

3. If you are returning the unit for service, pack the

unit in its original carton or a reasonable s ubstitute.
The original packaging may not be suitable as a
shipping carton, so consider putting the packaged
unit in another box for shipping. Print the RA
number clearly on the outside of the shipping box.
Print your return shipping address on the outside of
the box.

4. Include with your unit: a note with the RA number

and your contact information, including a return
shipping address (we cannot ship to a P.O. box)
and a daytime phone number, and a description of
the problem, preferably attached to the top of the
unit. Also include a copy of your purchase receipt.

www.artproaudio.com

E-mail: [e-mail]

© 2014 Applied Research & Technology

Zdirect

ZDT-5004-101

V1.3