User Manual for Rockville SINGMIX 45 Professional Powered Mixing Amplifier

Quick guide from the manual

The Rockville SINGMIX 45 is a 1000W professional powered mixing amplifier designed for karaoke, DJ, and home audio applications. This guide provides essential information on setting up your device, connecting speakers, and using the built-in features like Bluetooth, USB/SD playback, and microphone mixing.

Safety Instructions

• To reduce the risk of electric shock, never open the unit; there are no user-serviceable parts inside.
• Do not expose the unit to moisture or rain.
• Avoid placing the unit near heat sources or in direct sunlight.
• Ensure the unit is situated in a properly ventilated area to prevent overheating.
• Do not place objects on top of the unit, as this blocks vents.

Inputs and Outputs

• Front: Two 1/4" line inputs, 3.5mm AUX input, USB/SD inputs, and Bluetooth connectivity.
• Rear: Two XLR microphone inputs, two pairs of RCA line inputs, two pairs of RCA outputs (line and record), and four pairs of speaker outputs (banana and bare wire).

Functions and Controls

The front panel features independent controls for channels, music, and master volume:

• Master Volume: Controls the overall output level.
• Master Mic Volume: Controls the overall microphone output level.
• Channel Controls: Each channel (CH1/CH3, CH2/CH4) has independent volume, balance, echo, low, mid, and high EQ controls.
• Music Controls: Includes volume, balance, low, mid, and high EQ for music sources.
• Echo Controls: Adjusts echo volume, low/high EQ, repeat, and delay.
• Equalizer: Dual 7-band graphic equalizer (left/right) for adjusting frequencies from 60Hz to 15kHz.

Bluetooth Pairing

1. Turn on the Bluetooth feature on your device and ensure it is in discoverable mode.
2. Press the MODE key on the unit until the display reads "BLUE". The word will flash, indicating pairing mode.
3. Search for "SINGMIX 45" on your device and select it.
4. Once paired, the "BLUE" text will stop flashing.

USB and SD Playback

1. Insert a USB drive or SD card into the corresponding port on the front panel.
2. The unit will automatically begin to play music stored on the external device.
3. Use the playback controls (Play/Pause, Previous/Next) to navigate tracks.
4. Supported formats include MP3, WMA, FLAC, and APE.

Speaker Setup

The SINGMIX 45 supports various speaker configurations. Important: The total impedance of your speakers must not be less than 4 ohms.

• Speaker Outputs: The unit has two zones (Channel A and Channel B).
• Configuration: You can connect two 4-ohm or 8-ohm speakers to Channel A, or split them between Channel A and Channel B.
• Caution: If connecting only 1 speaker per channel, the minimum impedance must be no less than 4 ohms.

Microphone and Echo Controls

The unit allows for professional vocal mixing:

• Mic/Line Inputs: Connect wired microphones to the front 1/4" jacks or rear XLR jacks.
• Echo Effect: Use the echo controls to add depth to vocals. You can select between Stereo or Mono echo modes.
• Delay: Adjusts the time between echoes (e.g., 100ms setting creates a 1/10th of a second delay).

Troubleshooting

• No power: Ensure the unit is properly plugged in and check the fuse.
• Bluetooth pairing fails: Ensure the device is within 5ft of the unit, discoverable, and not paired to another device.
• No sound: Verify the correct input source is selected and check master volume and cable connections.
• Microphone feedback: Ensure speakers are not pointed toward or too close to the microphones; adjust the treble settings on the mic EQ panel.

Specifications

• Peak Power: 500W x 2 @ 4 Ohm
• RMS Power: 150W x 2 @ 4 Ohm / 100W x 2 @ 8 Ohm
• Frequency Response: 20Hz - 20kHz (±2dB)
• THD: Less than 0.5%
• Signal to Noise Ratio: >78dB
• Dimensions: 1" x 13" x 5"
• Weight: 14lbs (6.35kg)