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No Sound in Logic Pro from Your UAD Apollo Twin? Check Your Console I/O Matrix

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The Client’s Request:

Even after his UAD Apollo Twin was recognized by his Mac, my client Lawrence, a professional composer, was still unable to get any sound from his microphone or guitar to appear in Logic Pro. He could see input activity on the UAD Console, but the signal just wasn’t making it into his recording software. This was the final hurdle preventing him from capturing his performances.

How I Dealt With the Session:

Having resolved the initial driver recognition issue, we moved on to getting the audio signal from the Apollo Twin’s inputs into Logic Pro. With Logic open and the Apollo selected as the audio device, we still observed no input. This immediately directed our attention to the UAD Console software itself. While input metering was visible within the Console, indicating sound was reaching the interface, it wasn’t being correctly routed out to Logic. Through a systematic check of the Console’s settings, I quickly identified that the I/O Matrix, a critical routing hub, was blank. It became clear that some previous troubleshooting attempts by the client had inadvertently cleared these essential routing pathways. Selecting the default settings here quickly resolved the issue.

Troubleshooting Steps: Getting Apollo Twin Audio Inputs into Logic Pro

If your UAD Apollo Twin or other Universal Audio interface is recognized, but no audio signal is appearing in your Digital Audio Workstation (DAW) like Logic Pro, check these settings:

  • Verify DAW Audio Settings:
    1. Open your DAW (e.g., Logic Pro).
    2. Go to the DAW’s Audio Settings or Preferences (e.g., Logic Pro > Settings/Preferences > Audio).
    3. Under the Devices tab, confirm that your Apollo Twin (or Universal Audio device) is selected as both the Input Device and Output Device.
  • Check UAD Console I/O Matrix (Crucial Step):
    1. Open the UAD Console application.
    2. Within the Console, look for Settings (often represented by a gear icon or found in a menu).
    3. Select I/O Matrix.
    4. The I/O Matrix displays how the physical inputs and outputs of your Apollo Twin are routed to the software. If this matrix appears blank or incorrect, this is often the cause of no signal reaching your DAW.
    5. To fix this, look for a “Default” or “Reset” preset option within the I/O Matrix settings and select it. This will restore the standard routing configuration.
  • Test Audio Input in Your DAW:
    1. In your DAW, create a new Audio Track.
    2. Select the input corresponding to where your microphone or instrument is connected on the Apollo Twin (e.g., Analog 1, Analog 2).
    3. Enable recording on the track and send a signal (e.g., play guitar, speak into mic). A signal should now appear on the DAW’s input meters, confirming successful routing.

Client’s Satisfaction:

Lawrence was incredibly pleased to see his mic and guitar finally working in Logic Pro. This immediate resolution to his main technical problem was a huge relief, enabling him to resume recording. He later provided a five-star review, emphasizing his satisfaction with the comprehensive support received.