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Knowledge Base > Discontinued Products > 450 Dual Zone Priority Mixer

How do I disable the phantom power from the mic inputs on the 450 Dual Zone Priority Mixer?

To disable phantom power from microphone input #1:

1. Disconnect power from the 450.
2. Remove the 0-ohm jumper R48 in the extreme left rear corner of the 450.
3. To disable phantom power from microphone input #2:

Disconnect power from the 450.
Remove the 0-ohm jumper R172 in the left center area of the 450 circuit board.

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