Introduction
This manual provides detailed instructions for the proper setup, operation, and maintenance of your RadioShack Stereo 4-Channel Microphone Mixer, Model 32-2056. Please read this manual thoroughly before using the device to ensure optimal performance and longevity.
Key features of this mixer include:
- Four slide-action channel faders for precise sound mixing control.
- Mono/stereo selector for versatile audio output.
- Stereo line level output for connection to amplifiers or recording devices.
- Battery low indicator for convenient power management.
- Operates on one 9V battery or an optional AC adapter (both sold separately).
Safety Information
Observe the following safety precautions to prevent damage to the mixer or injury to yourself:
- Do not expose the unit to rain or moisture.
- Do not open the casing; refer all servicing to qualified personnel.
- Use only the specified power source (9V battery or compatible AC adapter).
- Keep the unit away from excessive heat sources.
- Ensure proper ventilation around the unit during operation.
Product Overview
Familiarize yourself with the various controls and connections on your mixer.
Figure 1: Front panel of the RadioShack Stereo 4-Channel Microphone Mixer, showing channel faders, mono/stereo switch, power switch, and battery low indicator.
Figure 2: Front edge of the mixer, displaying the four 1/4-inch microphone input jacks (MIC 1-4).
Figure 3: Rear panel of the mixer, featuring the DC 9V power input, stereo RCA output jacks, and two sets of stereo RCA auxiliary input jacks (AUX 1 and AUX 2).
Setup
Powering the Mixer
The mixer can be powered by a 9V battery or an optional AC adapter.
- Battery Installation: Open the battery compartment on the bottom of the unit. Connect a 9V battery to the battery clip and place it inside the compartment. Close the cover securely.
- AC Adapter Connection: If using an AC adapter (not included), plug its barrel connector into the DC 9V jack on the rear panel of the mixer. Plug the adapter into a standard AC outlet.
Connecting Microphones
Connect up to four microphones to the 1/4-inch MIC 1-4 input jacks located on the front edge of the mixer.
Connecting Auxiliary Audio Sources
The mixer provides two sets of stereo RCA auxiliary inputs (AUX 1 and AUX 2) on the rear panel. Connect line-level audio sources such as CD players, tape decks, or other audio devices to these inputs using RCA cables.
Connecting to an Amplifier or Recording Device
Connect the stereo RCA OUTPUT jacks on the rear panel of the mixer to the input jacks of your amplifier, powered speakers, or recording device.
Operating
Power On/Off
Slide the POWER switch on the front panel to the ON position to turn on the mixer. Slide it to OFF to turn off the mixer.
Adjusting Channel Levels
Each of the four channels (CHANNEL 1-4) has a dedicated slide-action fader. Move the fader up to increase the volume for that channel and down to decrease it. Adjust these faders to achieve the desired mix of your audio sources.
Mono/Stereo Selector
The MONO/STEREO switch allows you to select the output mode:
- STEREO: Combines the left and right signals from each channel into a stereo output.
- MONO: Combines all input signals into a single monaural output.
Select the appropriate mode based on your audio setup and desired sound.
Maintenance
Cleaning
Wipe the exterior of the mixer with a soft, dry cloth. Do not use liquid cleaners or solvents, as they may damage the finish or internal components.
Battery Replacement
When the BATTERY LOW indicator illuminates, replace the 9V battery promptly to ensure uninterrupted operation and prevent potential leakage.
Storage
If storing the mixer for an extended period, remove the 9V battery to prevent leakage and potential damage. Store the unit in a cool, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
If you encounter issues with your mixer, refer to the following common problems and solutions:
- No Sound Output:
- Ensure the mixer is powered on and the POWER switch is in the ON position.
- Check all audio cable connections to ensure they are secure and correctly plugged into the appropriate input/output jacks.
- Verify that the channel faders are raised to an audible level.
- Confirm that the connected amplifier or recording device is powered on and its volume is adjusted appropriately.
- If using battery power, check the BATTERY LOW indicator. Replace the battery if necessary.
- Distorted Sound:
- Reduce the input level of the audio source or the channel fader to prevent clipping.
- Ensure all cables are in good condition and not damaged.
- BATTERY LOW Indicator On:
- The 9V battery is running low. Replace it with a fresh battery or use an AC adapter.
Specifications
| Feature | Specification |
|---|---|
| Model Number | 320-2056 |
| Number of Channels | 4 |
| Audio Input | 4 x 1/4-inch Microphone, 2 x Stereo RCA Auxiliary |
| Audio Output | 1 x Stereo RCA Line Level |
| Power Source | 9V Battery or DC 9V AC Adapter (100mA, center positive, both sold separately) |
| Voltage | 9 Volts (DC) |
| Item Weight | 2.4 pounds (1.09 kg) |
| Package Dimensions | 12.3 x 7.8 x 3 inches (31.2 x 19.8 x 7.6 cm) |
Warranty and Support
RadioShack products are designed for reliability and performance. For specific warranty information, please refer to the warranty card included with your purchase or contact RadioShack customer support. Keep your purchase receipt as proof of purchase.
For technical assistance or further inquiries, please visit the official RadioShack website or contact their customer service department.
