Wireless Microphone Setup

Configure Hollyland LARK M2S or DJI Mic 3 wireless mics for multi-channel booth transcription with independent per-person transcripts.

5 minutes6 steps

Before You Start

LeadFuel desktop app installed on your MacBook
A wireless microphone system (Hollyland LARK M2S or DJI Mic 3)
USB-C cable to connect the mic receiver to your MacBook

Choose the Right Receiver

Hollyland LARK M2S: You must use the camera receiver (the one with a volume knob and cold shoe mount), not the USB-C mobile receiver. The mobile USB-C dongle only supports mono — both mics get summed to one channel, making it impossible for LeadFuel to separate them.

DJI Mic 3: The standard DJI Mic 3 receiver supports both stereo and quad output via USB-C.

If you have a Hollyland LARK M2S and only have the mobile USB-C receiver, you will need the camera receiver for stereo mode. This is a hardware limitation — the mobile receiver cannot do stereo.

Enable Stereo Mode on Your Receiver

Hollyland LARK M2S (camera receiver):

1. Long-press the volume knob for 3 seconds

2. The LED changes color to indicate the mode:

- Blue light = Stereo mode (correct for LeadFuel)

- Green light = Mono mode (do not use)

3. Make sure both transmitters are powered on and paired

DJI Mic 3 (stereo — 2 mics):

The receiver defaults to stereo when two transmitters are paired. No special setting needed.

DJI Mic 3 (quad — 3 or 4 mics):

1. On the receiver, go to Settings → Audio Output → Channel Mode

2. Select "Quad" or "4-Channel" mode

3. Pair all transmitters

Connect to Your MacBook

Plug the receiver into your MacBook using a USB-C cable. The receiver should appear as an audio input device within a few seconds.

If the device doesn't appear, try: - Unplugging and replugging the USB-C cable - Using a different USB-C port - Restarting the receiver

Select the Device in LeadFuel

Open the LeadFuel desktop app. In the microphone settings: 1. Click the device dropdown and select your wireless mic receiver 2. Select the capture mode: - Stereo Split — for 2 wireless mics (each on its own L/R channel) - Quad Split — for 3-4 DJI Mic 3 transmitters 3. You can optionally name each channel (e.g., "Rep - Sarah", "Visitor Side")

Verify Independent Channels

Before your event, verify each mic is on its own channel: 1. Click Start to begin capturing 2. Look at the VU meters — you should see one meter per channel 3. Speak into only transmitter 1 and confirm only channel 1's meter moves 4. Then speak into only transmitter 2 and confirm only channel 2's meter moves 5. Check the transcript tabs — each channel should show separate text

If both meters move together, or only one channel shows audio, check the troubleshooting section below.

A quick test: play a podcast near one mic and speak into the other. The transcript should show completely different text on each channel tab.

Assign Mics for Your Booth

For a typical 2-mic booth setup: - Mic 1 (Channel 1): Clip to your booth rep's collar or lapel - Mic 2 (Channel 2): Place near where visitors stand or sit — clip to a table tent, banner stand, or the edge of the booth table

This setup lets you see exactly what the visitor said vs. what your rep said in the transcript. The AI analysis uses this separation to better understand the conversation dynamics.

Battery tip: Both the Hollyland M2S and DJI Mic 3 transmitters last 6-8 hours. Start each event day with fully charged transmitters.

Troubleshooting

Both channels show the same audio — the mics aren't separated

This almost always means the receiver is in mono mode. For Hollyland LARK M2S: make sure you're using the camera receiver (not the USB-C mobile dongle) and that the LED shows blue (stereo), not green (mono). Long-press the volume knob for 3 seconds to switch. For DJI Mic 3: check that quad mode is enabled in the receiver settings if using 3+ mics.

Only one channel shows audio — the other is silent

Check that both transmitters are powered on and paired to the receiver. Also verify the transmitter that appears silent is actually transmitting — many wireless mics have a mute button on the transmitter that can be accidentally toggled.

I only see Mono mode in LeadFuel, not Stereo Split

LeadFuel shows Stereo Split only if the connected device reports 2 or more input channels. If you're using the Hollyland mobile USB-C receiver, it only reports 1 channel (mono). Switch to the camera receiver. For DJI, disconnect and reconnect after changing the receiver's channel mode.

The transcript quality is poor with wireless mics

Wireless mic quality depends on placement. Clip transmitters at chest height for best results. If the mic is too far from the speaker, background noise dominates. Also check your Whisper model setting in LeadFuel (Settings → Transcription Model) — the 'small' or 'medium' model balances speed and accuracy for most situations.

The transcript shows a diagnostic line about '48000Hz → resampled to 16kHz'

This is normal and expected. USB wireless mic receivers capture at 48,000Hz (standard digital audio rate). LeadFuel automatically resamples to 16,000Hz for the local Whisper AI engine. This happens transparently and does not affect quality.

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