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Introduction
The Extron BUC 202 is a two channel balanced and unbalanced audio converter and audio
line driver. It features two balanced or unbalanced inputs and outputs, both on captive
screw connectors. The BUC 202 provides two independent channels of signal matching
between unbalanced and balanced audio equipment. Two rotary switches provide precise
trim adjustment from -21 to +21 dB in clearly-labeled 3 dB steps. In addition to serving as
an interface from consumer products to professional AV systems, the BUC 202 is a high-
quality line driver for sending and receiving audio signals up to 1,000 feet (300 m). The
unique 1U, quarter rack width enclosure, together with the included patented ZipClip 200
mounting bracket, offers the versatility to install the BUC 202 in a discreet location, such as
on a rack rail, beneath a table, or within a lectern.
Features
• Converts unbalanced audio signals to balanced signals and balanced signals to
unbalanced signals
• Active balancing circuitry
• Audio line driver for long distance audio signal transmission
• Independent, variable trim control on each channel with wide, 42 dB adjustment range
• Versatile 1U, quarter rack width enclosure allows installation on a rack rail, beneath a
table, or within a lectern
• Patented ZipClip 200 mounting kit included:
• Mounts securely on a variety of surfaces, including rack rails, tables, lecterns,
and table legs
• Wire tie slots for proper strain relief and dressing of excess cable
• Quick release tab allows for easy installation and removal
BUC 202 User Guide • Introduction 1