Ai-Ms900 Master Station Connection And Adjustment; External Speaker Connection; Speaker Volume And Microphone Sensitivity Adjustment - Aiphone AI-900 Installation Manual

12.4. AI-MS900 Master Station Connection and Adjustment

12.4.1. External speaker connection

Follow the procedures below when connecting an external speaker (8Ω).
Step 1. Remove the AI-MS900's rear terminal cover and set the internal slide switch to the [EXT. SP] position.
Internal/External speaker selection switch
Terminal cover
EXT.SP terminal
Microphone sensitivity control
Internal speaker volume control
Step 2. Connect the speaker cable to EXT.SP terminal.
Speaker cable
Step 3. Replace the removed terminal cover in place.
12.4.2. Internal speaker volume and microphone sensitivity adjustment
The AI-MS900's internal speaker volume and microphone sensitivity can be adjusted by means of their
respective controls located under the terminal cover described above. Both controls are factory-preset to their
maximum positions.
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