Using Two Microphones for a Webinar

Using multiple microphones for a webinar doesn't have to be this difficult

The Easy Way to use Multiple USB Microphones for a Webinar

This short tutorial will walk you through the steps to use two USB microphones (or more) on one Mac for a webinar.

Tools required:

Install Soundflower & Audio Hijack Pro

  1. Download and install Soundflower. It will now show up in your Sound control panel and in other applications as an audio device.
    Soundflower is a Mac OS X (10.2 and later) system extension that allows applications to pass audio to other applications. Soundflower is easy to use, it simply presents itself as an audio device, allowing any audio application to send and receive audio with no other support needed. Soundflower is free, open-source, and runs on Mac Intel and PPC computers. (From the Cycling74 Website)
  2. Download and install Audio Hijack Pro. We will be passing the audio from the two microphones into Soundflower using Audio Hijack Pro, and then Soundflower will be then input to GoToWebinar (and Garageband if you want to record audio locally).


Configure Audio Hijack Pro

Plug in both your microphones first. Launch Audio Hijack Pro and click the plus sign in the bottom left to add an audio device.


Set Source Type

Audio Hijack Pro is capable of hijacking many types of devices. in this case we want to use the pull down for Source Type and choose Audio Device.


Set Audio Input Device

Use the pulldown next to the Input Device to choose your first microphone.


Set Audio Output Device

Use the Output Device pulldown to choose Soundflower (2ch) as the output device.


Verify your Settings

You will now see that you have an audio device with the input as your first microphone and the output as Soundflower (2ch). Repeat this process for your second microphone, also setting the output device to Soundflower (2ch).


Start Hijacking

Select the first microphone, then click the Hijack button. It should appear depressed and then you can verify on the right that it shows you’re hijacking and how long you’ve been hijacking. Repeat for your second microphone. Now you have successfully created one audio source out of two USB microphones.


Start the Webinar

Launch GoToWebinar and select the audio source Soundlower (2ch). Test to make sure audio is registering from all the microphones. You’re good to go.

Photo credit: sridgway