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ART Passive DI
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ART

ZDIRECT

ART Passive DI

Our Price: $59.99

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Product Description

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.

  • Fully passive, high performance transformer design. No battery required.
  • Converts 50k ohm inputs into 600 ohm balanced outputs
  • Switchable input attenuation (0, -20, -40 dB) Switchable low pass filter
  • Switchable phase invert
  • Switchable ground lift (fully isolates inputs from chassis and outputs)
  • XLR connectors for balanced outputs
  • Rugged extruded aluminum case

Frequency Response:

10Hz -50kHz, +/-.5dB @ +4dBu

Total Harmonic Distortion:

.01% Typical @ 1kHz, +18dBu, <.05% @ 100Hz, +18dBu

Input Connections:

1/4 - inch TRS unbalanced, 50k O

Output Connections:

XLR male balanced, 600 O

Output Phase:

Switchable, Normal/Invert

Ground Lift:

Switchable, fully isolates inputs from chassis and output

Input Attenuation:

Switchable, (0dB, -20dB, -40dB)

Filter Type / Response:

Switchable, Low Pass, -3dB @30kHz

Dimensions:

1.75"H x 4.2"D x 3.5"W (44.5mm x 107mm x 89mm)

Weight:

0.75 lbs (0.35 kg)

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.

  • Fully passive, high performance transformer design. No battery required.
  • Converts 50k ohm inputs into 600 ohm balanced outputs
  • Switchable input attenuation (0, -20, -40 dB) Switchable low pass filter
  • Switchable phase invert
  • Switchable ground lift (fully isolates inputs from chassis and outputs)
  • XLR connectors for balanced outputs
  • Rugged extruded aluminum case

Frequency Response:

10Hz -50kHz, +/-.5dB @ +4dBu

Total Harmonic Distortion:

.01% Typical @ 1kHz, +18dBu, <.05% @ 100Hz, +18dBu

Input Connections:

1/4 - inch TRS unbalanced, 50k O

Output Connections:

XLR male balanced, 600 O

Output Phase:

Switchable, Normal/Invert

Ground Lift:

Switchable, fully isolates inputs from chassis and output

Input Attenuation:

Switchable, (0dB, -20dB, -40dB)

Filter Type / Response:

Switchable, Low Pass, -3dB @30kHz

Dimensions:

1.75"H x 4.2"D x 3.5"W (44.5mm x 107mm x 89mm)

Weight:

0.75 lbs (0.35 kg)

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