Didn't it come with instructions? If not, you need to be more specific about the type of transformer,brand. model etc. Most require a connection to household line voltage via direct wiring in a J-box or a plug for the input and separate low voltage lines to the soundboard unless it is a combination unit.
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http://www.creativehomeowner.com/index.php?pane=project&projectid=chele187 the Answer
Didn't it come with instructions? If not, you need to be more specific about the type of transformer,brand. model etc. Most require a connection to household line voltage via direct wiring in a J-box or a plug for the input and separate low voltage lines to the soundboard unless it is a combination unit.