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Matching Converters - RB-BL2 5
5 RB-BL2 Single Bi-Directional Matching Converter
Introduction
Fig 5-1: RB-BL2 Front Panel
The RB-BL2 is a bi-directional stereo unit for interfacing domestic, or
semi-pro unbalanced equipment to professional balanced line levels, and
vice-versa.
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electronically balanced inputs have an impedance of
ϮϬŬɏďƌŝĚŐŝŶŐĂŶĚĂƌĞƌŽƵƚĞĚƚŽƵŶďĂůĂŶĐĞĚZ;ƉŚŽŶŽͿ
ŽƵƚƉƵƚƐǁŝƚŚĂŶŽƵƚƉƵƚŝŵƉĞĚĂŶĐĞŽĨфϱϬɏ͘
dŚĞZƵŶďĂůĂŶĐĞĚŝŶƉƵƚƐŚĂǀĞĂŶŝŵƉĞĚĂŶĐĞŽĨϭϬŬɏ
ďƌŝĚŐŝŶŐĂŶĚĂƌĞƌŽƵƚĞĚƚŽďĂůĂŶĐĞĚy>ZͲϯŽƵƚƉƵƚƐǁŝƚŚĂŶ
ŽƵƚƉƵƚŝŵƉĞĚĂŶĐĞŽĨфϱϬɏ͘
The output gain can be individually adjusted for left and
right channels by using pre-set potentiometers accessible
through the rear panel. An LED power indicator on the
front panel displays the power supply connection.
Left Input 1
Professional/
Balanced
Left Output 1
Consumer/Unbalanced
Phono
Gain
Right Input 1
Professional/
Balanced
Left Input 2
Consumer/
Unbalanced
Right Input 2
Consumer/
Unbalanced
Right Output 1
Consumer/Unbalanced
Left Output 2
Professional/Balanced
Right Output 2
Professional/Balanced
Phono
Gain
Phono
Gain
Phono
Gain
Fig 5-2: RB-BL2 System Block Diagram
System Block Diagram