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ART cessories
Creative audio solutions in cool little boxes.
February 2004
The Zdirect is a high quality totally 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 1/4" 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.
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.
DESIGNED & DISTRIBUTED BY: APPLIED RESEARCH AND TECHNOLOGY • 215 Tremont Street • Rochester, New York 14608 • USA
For Customer Service, please call: 585.436.2720 • Email: cserve@artproaudio.com • www.artproaudio.com • ART-ARTcs-02/04
Specifications:
Frequency Response:
THD:
Input Connections:
Output Connection:
Filter Type/Response:
Input Attenuation:
Output Phase:
Ground Lift:
Dimensions:
Weight:
™
10Hz –50kHz, +/-.5dB @ +4dBu
.01% Typical @ 1kHz, +18dBu,
<.05% @ 100Hz, +18dBu
1/4" TRS unbalanced, 50k Ohm
XLR male, 600 Ohm
Switchable, Low Pass, -3dB @ 30kHz
Switchable, (0dB, -20dB, -40dB)
Switchable, Normal/Invert
Switchable, fully isolates inputs from
chassis and output.
1.75"H x 4.2"W x 3.5"D
(44.5mm x 107mm x 89mm)
.75 lbs. (.34kg)
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