Introduction
The MXR Iso-Brick Power Supply is a compact and efficient solution for powering a wide range of guitar pedals. Designed to eliminate ground loop noise with its fully isolated outputs, it provides stable and clean power for both analog and digital effects. This manual will guide you through the setup, operation, and maintenance of your Iso-Brick Power Supply.
Product Overview
The MXR Iso-Brick Power Supply features a robust aluminum housing and offers 10 fully isolated outputs to ensure quiet, noise-free operation. It supports various voltage and current requirements, making it versatile for diverse pedal setups.
Key Features:
- 10 fully isolated outputs to prevent ground loop noise.
- Multiple voltage and current options:
- (2) 9V outputs at 100mA
- (2) 9V outputs at 300mA
- (2) 9V outputs at 450mA
- (2) 18V outputs at 250mA
- (2) variable outputs adjustable from 6V to 15V at 250mA
- Variable outputs can simulate a "drained battery" effect for vintage tones.
- Compact and lightweight design with a durable aluminum chassis.
- Equipped with power on/off and connection status LEDs.
Figure 1: Top view of the MXR Iso-Brick Power Supply, showcasing its compact design.
Setup Instructions
Follow these steps to set up your MXR Iso-Brick Power Supply and connect your pedals.
- Connect the Power Adapter: Plug the provided 18V DC power adapter into the "18V DC IN" port on the side of the Iso-Brick. Connect the other end of the adapter to a suitable AC power outlet. The power status LED on the Iso-Brick will illuminate.
- Connect Pedals: Use the included DC cables to connect your guitar pedals to the appropriate output ports on the Iso-Brick. Ensure the voltage and current requirements of your pedals match the output specifications of the chosen port.
- For standard 9V pedals, use the 9V outputs (100mA, 300mA, or 450mA).
- For 18V pedals, use the 18V outputs (250mA).
- For pedals requiring specific voltages between 6V and 15V, use the variable outputs.
- Cable Types: The Iso-Brick comes with various DC cables, including straight and angled connectors, to accommodate different pedalboard layouts and pedal jack orientations.
Figure 2: Rear view of the Iso-Brick, highlighting the 18V DC input port.
Figure 3: Top view of the Iso-Brick, detailing the various output ports and their specifications.
Visual Setup Guide:
Video 1: Official MXR video demonstrating the unboxing and setup of the Iso-Brick Power Supply, including connecting pedals.
Operating Instructions
The MXR Iso-Brick is designed for straightforward operation. Once connected, the individual blue LEDs next to each output indicate active power delivery.
Using Variable Outputs:
The two variable outputs (6V-15V @ 250mA) allow you to fine-tune the voltage supplied to specific pedals. This feature is particularly useful for emulating the sound of a dying battery, which can produce unique tonal characteristics in some vintage-style pedals. Rotate the small knob next to these outputs to adjust the voltage. It is recommended to adjust these knobs carefully to avoid damaging pedals that are sensitive to over-voltage.
Current Draw Considerations:
Always ensure that the current draw (mA) of your pedal does not exceed the maximum current output of the port it is connected to. While the Iso-Brick is robust, exceeding current limits can lead to unstable operation or potential damage to the power supply or pedal. Refer to your pedal's manual for its specific power requirements.
Maintenance
To ensure the longevity and optimal performance of your MXR Iso-Brick Power Supply, observe the following maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Avoid using abrasive cleaners or solvents.
- Environmental Conditions: Do not expose the device to rain, moisture, or extreme temperatures. Operate and store the unit in a dry environment.
- Servicing: Do not attempt to open the housing or remove any screws. Refer all servicing to qualified service personnel. Unauthorized modifications will void the warranty.
Figure 4: Bottom view of the Iso-Brick, showing the product label and important safety warnings.
Troubleshooting
If you encounter issues with your Iso-Brick Power Supply, consider the following common solutions:
- No Power to Pedals:
- Ensure the 18V DC power adapter is securely connected to both the Iso-Brick and a working AC outlet.
- Check that the DC cables are firmly plugged into both the Iso-Brick output and the pedal's input.
- Verify that the pedal's power requirements (voltage and current) match the selected Iso-Brick output.
- Hum or Noise:
- The Iso-Brick's isolated outputs are designed to prevent ground loop noise. If hum persists, check your pedal's cables and connections.
- Ensure all pedals are connected to their appropriate isolated outputs.
- Variable Output Knob Movement: The variable output knobs do not have detents and can be freely adjusted. While this allows for fine-tuning, ensure they are not accidentally bumped from your desired setting.
- Bright LEDs: The blue status LEDs on the Iso-Brick are intentionally bright to indicate active connections. This is a design feature and not a malfunction.
- Large Wall Wart: The 18V power adapter is designed to provide sufficient power. Its size may occupy multiple outlets on a standard power strip. Consider using a power strip with wider spacing or an extension cable if space is limited.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 5.3 x 6.9 x 3.7 inches |
| Item Weight | 8 ounces (0.5 Pounds) |
| Item Model Number | M238 |
| Brand | MXR |
| Manufacturer | Jim Dunlop |
| Color | Silver |
| Material | Aluminum, Metal |
| Connector Type | Barrel Connector |
| Date First Available | February 27, 2015 |
| Outputs | 10 Fully Isolated Outputs:
|
Warranty and Support
The MXR Iso-Brick Power Supply is manufactured by Jim Dunlop. Products purchased from an authorized dealer typically come with a full manufacturer's warranty. Please retain your proof of purchase for warranty claims.
- Warranty Period: Standard manufacturer warranty applies. Refer to the warranty card included with your product or the official Jim Dunlop website for specific terms and duration.
- Returns: Products may be eligible for return within 30 days of purchase, subject to the retailer's return policy.
- Technical Support: For technical assistance, troubleshooting beyond this manual, or warranty service, please contact Jim Dunlop customer support directly. Contact information can typically be found on the manufacturer's website or product packaging.
