Canford

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20-092 SHURE A15BT TRANSFORMER Bridging

each (ex. VAT) 1+
Price £ 39.16
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SHURE A15BT TRANSFORMER Bridging

Manufacturers description

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A15BT Bridging Transformer

The Shure A15BT balanced transformer matches, bridges, or isolates balanced and unbalanced devices of different impedances and levels.

Features

  • The A15BT has a 33,000 ohm primary (three-socket) end and either a 7500 ohm or 600 ohm secondary (three-pin) end. Either end can be unbalanced by connecting pins 1 and 3. The A15BT solves problems of matching, bridging, or isolating balanced or unbalanced devices of different impedances and levels. Voltage loss from the 33,000 ohm primary to the 7500 ohm secondary is 6.4 decibels; to the 600 ohm secondary, it is 17.4 decibels.
  • To couple a preamplifier, mixer, or recorder with a 600 ohm line output to a device with a high-level, high impedance, unbalanced (Aux) input, connect the 600 ohm output to the 33,000 ohm balanced-line side of the A15BT. Unbalance the A15BT secondary and connect it to the Aux input. Choose either the 7500 ohm or 600 ohm winding, depending on which provides the proper level and best signal-to-noise ratio. In this configuration, the A15BT "bridges" the 600 ohm line output.

Specifications

Impedance
  XLR Pin Connector (M): 7500 ohms or 600 ohms
  XLR Socket Connector (F): 33,000 ohms

Voltage Ratio 7500 ohms 600 ohms
Medium-impedance to
high-impedance:		 +6.4 dB +17.4 dB
High-impedance to
medium-impedance:		 -6.4 dB -17.4 dB

Maximum Recommended Input Levels

Driving Source
Impedance (ohms)		 Winding Being
Driven (ohms)		 Maximum
Level (Volts)
600 600 0.5
600 7500 2.5
600 33,000 6.0
7500 7500 1.5
7500 33,000 5.0
33,000 33,000 5.0

Case
  Full magnetic shield, steel with gray enamel finish

Dimensions
  19 mm (3/4 in.) diameter; 89 mm (3 1/2 in.) long

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SHURE PROBLEM SOLVERS

Filters, attenuators, transformers, switches and impedance adapters to solve interface problems in installlations and in the field.

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