PRE-70V: Inputs, Outputs & Controls

Introduction

The Rockville PRE-70V Preamp is a multi-zone 70V system controller designed for commercial and residential audio setups. This guide breaks down the inputs, outputs, and controls so you can maximize its functionality.

Front Panel Controls

1. Mode Selection & Playback Controls

• Mode Button: Switches between:
  • USB
  • SD Card
  • Bluetooth
  • FM Radio
  • Optical/Line Inputs
• Playback Controls:
  • Pause/Play
  • Skip Forward/Previous
  • Menu/Record Button (for USB & SD Card)
  • Repeat Button (loops tracks)

2. Microphone Inputs & Controls

• Priority Mic Input (1/4"): For paging microphones.
• Mic 2 Input (Back Panel): Additional mic with echo control.
• Chime Button: Plays a chime through the speakers before announcements.

3. Audio Source Volume Controls

• Mic 1 & Mic 2 Volume Knobs
• Echo Knob (applies only to Mic 2)
• Line Input Volume (for external sources)
• Optical Input Volume (for TV, gaming consoles, etc.)
• MP3 Volume (for Bluetooth, USB, or SD card playback)

4. Sound Customization

• Treble Knob: Adjusts high frequencies.
• Bass Knob: Controls low-end frequencies.

5. Master Volume & Balance Control

• Master Volume Knob: Controls overall system volume.
• Balance Knob:
  • Turn left to increase left channel.
  • Turn right to increase right channel.

6. Zone Volume Controls

• Zones 1-4 (Left Channel)
• Zones 5-8 (Right Channel)

💡 Each zone has independent volume control—perfect for multi-room setups.

Back Panel Connections

1. Speaker Zone Outputs

• Zones 1-4 → Left Channel
• Zones 5-8 → Right Channel
• Each zone has positive (+) and negative (-) terminals for 70V speakers.

2. Connecting to an Amplifier

• 70V Outputs → Amplifier Inputs
• Amplifier Outputs → 70V Left & Right Inputs on Preamp

💡 Ensure total speaker wattage doesn’t exceed amplifier power to prevent damage.

3. Grounding the Preamp

• If you hear a 60-cycle hum, connect a ground wire between the preamp chassis and the amplifier body.

4. Stereo & Mono Mode

• Mono Mode: Uses all 8 zones with the same audio signal.
• Stereo Mode: Splits into 4 stereo zones for left/right channel separation.

5. Additional Inputs & Outputs

• RCA Line Input & Output: Connects to external audio equipment.
• Optical Input: For TVs, gaming systems, and other digital sources.
• FM Antenna: Enhances radio signal reception.

Microphone Functions

• Mic 1 Mute Knob: Controls mic volume level.
• Mic 2 Echo Effect: Adds reverb for enhanced sound.

Conclusion

The Rockville PRE-70V Preamp offers extensive audio control for multi-zone 70V systems. With multiple input options, independent zone control, and microphone integration, it’s perfect for businesses, homes, and commercial spaces.