CH-MIC70: How To Set Up & Use

Introduction

The Rockville CH-MIC70 is a push-to-talk commercial microphone designed for 70V systems, stereo amplifiers, mixers, and other audio setups. It features a gooseneck arm for flexible positioning, built-in chime tones, and both quarter-inch and XLR connection options.

This guide will walk you through connecting, adjusting volume, and using the push-to-talk feature.

What’s Included?

• CH-MIC70 microphone with built-in gooseneck
• Attached power cable
• Quarter-inch cable
• Quarter-inch to male XLR adapter

Step 1: Connecting the Microphone to a 70V Amplifier

If you are using a 70V amplifier, follow these steps:

1. Take the included quarter-inch cable.
2. Plug one end into the mic output on the back of the microphone.
3. Plug the other end into an available quarter-inch mic input on the amplifier (e.g., Mic Input 1).

Tip: If using a multi-zone amplifier, the microphone will broadcast to all zones for clear, wide-reaching announcements.

Step 2: Adjusting the Microphone & Chime Volume

On the bottom of the microphone, you will find volume controls for:

• Microphone Volume
• Chime Volume

To adjust:

1. Use a flathead screwdriver.
2. Turn clockwise to increase volume.
3. Turn counterclockwise to decrease volume.

Tip: If you do not want the chime sound, lower the chime volume completely.

Step 3: Using the Push-to-Talk Function

1. Raise the mic volume on your amplifier.
2. Press the "Mic On" button to activate the microphone.
   • A chime will sound, indicating the mic is active.
3. Position the gooseneck as needed for comfortable speaking.
4. Speak into the microphone (your voice will broadcast over the entire system).
5. Press the "Mic Off" button when finished.
   • A chime will sound to indicate the mic is off.

Tip: The chime ensures that listeners know when an announcement starts and ends.

Step 4: Connecting the Microphone to a Mixer or Stereo Amplifier

If connecting to a stereo amplifier or mixer, you can use:

Option 1: Using the Quarter-Inch to XLR Adapter (Recommended for Mixers)

1. Take the quarter-inch to XLR adapter.
2. Plug the quarter-inch end into either side of the included quarter-inch cable.
3. Plug the male XLR end into an XLR input on the mixer or amplifier.
4. Raise the volume on the connected channel.
5. Press the Mic On button to talk, and Mic Off when finished.

Option 2: Using a Quarter-Inch Input (For Amps with Mic Inputs Only)

1. Plug the quarter-inch cable directly into an available mic input.
2. Raise the mic volume on the amplifier.
3. Press Mic On to talk, then Mic Off when finished.

Important: Many mixers only accept microphone signals via XLR inputs. If your mixer has quarter-inch inputs, they may be line-level only, which could result in a weak signal. Use the XLR adapter for best results.

Conclusion

The Rockville CH-MIC70 is a versatile push-to-talk microphone, perfect for commercial paging, announcements, and intercom systems. Whether you're using it with a 70V system, stereo amplifier, or mixer, setup is quick and simple.