Saramonic Dual Wireless VHF Lavalier Microphone System with SR-AX100 Audio Mixer User Manual

Introduction

The Saramonic Dual Wireless VHF Lavalier Microphone System with SR-AX100 Audio Mixer is a compact and lightweight audio solution designed for filmmaking, broadcast interviews, business presentations, and other applications requiring portable, high-quality sound. This system provides a 200-foot (60m) wireless range and includes a 2-channel audio mixer for enhanced control over your audio input.

What's in the Box

• 2 x Saramonic SR-WM4C Wireless Transmitters
• 2 x Saramonic SR-WM4C Wireless Receivers
• 2 x Omnidirectional Lavalier Microphones
• 2 x Foam Wind Covers
• 2 x Lapel Clips
• 1 x Saramonic SR-AX100 2-Channel Audio Mixer
• 3 x USB Charging Cables
• Audio Cables (3.5mm TRS to 3.5mm TRS, 3.5mm TRS to XLR)
• Warranty Card

Product Overview

Figure 1: Saramonic SR-WM4C Transmitter and Receiver Components

The Saramonic SR-WM4C system consists of compact transmitters and receivers. Each unit features a power indicator, earphone jack (on receiver), antenna, audio output indicator (on receiver), power button, and frequency mode switch. They are powered by 4 AA batteries each and include a belt clip and hot shoe mount with a 1/4 inch thread hole.

Figure 2: Saramonic SR-AX100 2-Channel Audio Mixer

The SR-AX100 is a passive 2-channel audio mixer that allows connection of two microphones or wireless receivers to a DSLR camera or camcorder. It features volume control knobs for left and right channels and a mono/stereo switch. It mounts via a standard hot-shoe and includes three integrated mounting shoes for accessories.

Setup

1. Install Batteries: Open the battery compartment on each SR-WM4C transmitter and receiver. Insert 4 AA batteries into each unit, ensuring correct polarity. Close the battery compartments securely.
2. Attach Lavalier Microphones: Connect the 3.5mm TRS plug of the omnidirectional lavalier microphone to the "MIC IN" port on the SR-WM4C transmitter. Secure the microphone to clothing using the lapel clip and foam wind cover.
3. Mount Receiver: Attach the SR-WM4C receiver to your camera's hot-shoe mount.
4. Connect Receiver to Camera/Mixer: Use the provided 3.5mm TRS cable to connect the receiver's "OUTPUT" jack to your camera's microphone input. Alternatively, connect both SR-WM4C receivers to the SR-AX100 audio mixer's 3.5mm inputs.
5. Connect SR-AX100 Mixer (if used): Mount the SR-AX100 mixer to your camera's hot-shoe. Connect the mixer's stereo 3.5mm TRS mini-jack output to your camera's audio input.

Operating Instructions

1. Power On/Off: Slide the power switch on each transmitter and receiver to the "ON" position. The power indicator LED will illuminate.
2. Select Operating Frequency: On both the transmitter and receiver, use the frequency mode switch (A, B, C, D) to select a clear operating frequency between 203MHz and 216MHz. Ensure both units are set to the same channel for proper communication.
3. Adjust Volume (SR-WM4C Receiver): Use the volume control knob on the SR-WM4C receiver to adjust the output level to your camera or mixer.
4. Monitor Audio (SR-WM4C Receiver): Plug headphones into the receiver's earphone jack to monitor the audio in real-time.
5. Adjust Mixer Levels (SR-AX100): If using the SR-AX100 mixer, adjust the individual left and right channel volume control knobs to achieve desired audio balance. Use the M/S switch to select between mono or stereo output.
6. Camera Audio Settings: Adjust your camera's internal mic levels to prevent clipping. A common recommendation is to lower camera input levels and adjust the wireless system's output for optimal signal-to-noise ratio.

Maintenance

• Keep units dry and away from extreme temperatures.
• Clean with a soft, dry cloth. Avoid harsh chemicals.
• Remove batteries if the system will not be used for an extended period to prevent leakage.
• Store in a protective case to prevent damage.

Troubleshooting

• No Audio:
  • Ensure all units are powered on.
  • Verify that transmitter and receiver are on the same frequency channel (A, B, C, or D).
  • Check battery levels and replace if low.
  • Ensure all cables are securely connected.
  • Adjust receiver output volume and camera input levels.
• Static or Interference:
  • Change to a different frequency channel (A, B, C, or D) to avoid local interference.
  • Ensure line of sight between transmitter and receiver.
  • Reduce distance between transmitter and receiver.
  • Check for other wireless devices operating on similar frequencies nearby.
• Distorted Audio:
  • Lower the output volume on the SR-WM4C receiver or the input gain on the SR-AX100 mixer.
  • Adjust camera's audio input level to prevent clipping.

Specifications

Warranty & Support

This Saramonic product comes with a 1-year manufacturer's warranty. For technical support, troubleshooting assistance, or warranty claims, please visit the official Saramonic store or contact their customer service.

Consumer Alert: Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device.