> ## Documentation Index
> Fetch the complete documentation index at: https://docs.solidyne.ar/llms.txt
> Use this file to discover all available pages before exploring further.

# Operation: Controls

> Description of controls and operation

## General Description

Different audio sources —microphones, computer and telephone lines— enter the console through the input channels.\
The MiniMixer combines all signals to generate the main signal called **Program (PGM)**.

Each audio source is controlled by its respective faders.

The console functions are grouped into different zones:

<img src="https://mintcdn.com/solidyne/1PsQNXH_7vEIZ51t/images/minimixer/minimixer-secciones.png?fit=max&auto=format&n=1PsQNXH_7vEIZ51t&q=85&s=eddd4374351dad353d434e3f6b2491c7" alt="Minimixer Sections" title="Minimixer Sections" className="mx-auto" style={{ width:"80%" }} width="2297" height="2107" data-path="images/minimixer/minimixer-secciones.png" />

1. **Telecommunications**: controls for managing landline and Bluetooth mobile phone.
2. **Intercom**: enables communication with telephone lines and headphones using the internal microphone.
3. **DTMF Keypad**: enables direct dialing on landline from the console.
4. **Faders**: control microphone and line signal levels.
5. **Level Meters**: display PGM level and microphone compressor action.
6. **Connections**: indicate connector locations on the rear panel.

## Telephone Lines

The MiniMixer includes a hybrid channel to handle both landline and Bluetooth mobile phone.\
Its operation is simple and error-proof, thanks to safety logic and automatic circuits.

### Hybrid Channel Controls

<img src="https://mintcdn.com/solidyne/1PsQNXH_7vEIZ51t/images/minimixer/minimixer-lineas_telco.png?fit=max&auto=format&n=1PsQNXH_7vEIZ51t&q=85&s=f9470ff819d1e2c7d793a31235ffdbea" alt="Telco" title="Telco" className="mx-auto" style={{ width:"65%" }} width="848" height="619" data-path="images/minimixer/minimixer-lineas_telco.png" />

1. **PHONE/LINE IN**\
   Switches between stereo line input and auxiliary line.
   * When the hybrid is not in use, all 4 microphones and both input lines can be used simultaneously.
   * If a call comes in while in LINE-IN mode, the **HOLD** button will flash to notify the operator. Switch to PHONE to answer.
2. **LEVEL (landline / auxiliary)**\
   Controls the level of landline and auxiliary input, both in CUE and on-air signal.
3. **TALK (landline)**\
   Momentary button that enables the internal microphone to talk off-air with the telephone line.
4. **CUE/PGM (landline / auxiliary)**\
   Selects whether the signal is sent to headphone preview (**CUE**) or main on-air output (**PGM**).
5. **HOLD**
   * Flashes when receiving a call.
   * When pressed, answers the call and puts it on hold with PGM return.
   * Also used to put the call on-air.
6. **LEVEL (Bluetooth)**\
   Adjusts the audio level from the Bluetooth-linked mobile phone.
7. **BLT (Bluetooth ON/OFF / Pairing)**
   * Turns Bluetooth connection on or off.
   * Hold to enter pairing mode.
   * LED indicates status:
     * Slow flash = active.
     * Fast flash = discovery mode.
8. **CUE/PGM (Bluetooth)**\
   Switches Bluetooth signal between private headphone monitoring (**CUE**) or main output (**PGM**).
9. **TALK (Bluetooth)**\
   Enables private communication with mobile phone using the internal talkback microphone.
10. **LEVEL master headphones**\
    Master headphone level control.
11. **PGM MUTE**\
    Mutes program signal in headphones, allowing monitoring of CUE only.
12. **TALK TO HEADPHONES**\
    Button that enables the internal microphone to talk directly to headphones (intercom).