1. Introduction
The Roland GK-3B Bass Divided Pickup is designed to enable bass players to connect their instrument to compatible guitar synthesizers and modeling devices, such as the Roland V-Bass and GR-55 guitar synthesizer. This pickup facilitates the expansion of tonal possibilities by providing individual string output for advanced processing.
2. Key Features
- Enables connection to synthesizers, such as Roland V-Bass and GR-55.
- Ultra-thin design for discreet installation.
- Large, smooth-action volume knob for easy control.
- Select switch for choosing between normal bass tone, synthesizer sound, or a mixture of both.
- Includes attachment holder and double-sided tape for flexible installation options.
3. Setup and Installation
Proper installation of the GK-3B is crucial for optimal performance. The pickup system consists of the divided pickup unit and a control unit. The package includes various components to assist with installation on most bass guitars.
Figure 1: Roland GK-3B Bass Divided Pickup showing the pickup unit and the control unit connected by a cable.
3.1. Mounting the Divided Pickup Unit
- Positioning: Determine the optimal position for the divided pickup unit. It should be placed close to the bridge, ensuring that each string passes directly over its corresponding pickup element.
- Attachment Methods:
- Double-Sided Tape: For temporary or non-invasive installation, use the included double-sided tape. Ensure the bass surface is clean and dry before application. Risers may be used to achieve the correct height relative to the strings.
- Screw Mounting: For a more permanent installation, the pickup unit can be screw-mounted. This typically requires drilling small pilot holes into the bass body. Consult a qualified technician if you are unsure about this method.
- String Height Adjustment: Ensure the pickup is at an appropriate height to capture string vibrations effectively without interfering with playing. Adjust risers or mounting screws as needed.
3.2. Mounting the Control Unit
- Placement: The control unit, featuring the volume knob and switches, should be mounted in an easily accessible location on the bass body.
- Attachment: Use the included attachment holder and/or double-sided tape to secure the control unit. The cable connecting the pickup to the control unit is designed to be long enough for various placements and can be neatly routed and secured with small clamps.
3.3. Adjusting String Spacing
The GK-3B allows for adjustment of string spacing to match your bass. Refer to the guide included in the packaging for specific instructions. A small screwdriver is provided for this purpose. Adjusting involves a simple mechanism to align the pickup elements with each string.
4. Operating Instructions
Once installed, the GK-3B provides intuitive controls for integrating your bass with compatible synthesizer units.
4.1. Connecting to a Synthesizer
Connect the 13-pin output of the GK-3B control unit to the corresponding input on your Roland V-Bass, GR-55, or other compatible guitar synthesizer. Ensure the connection is secure.
4.2. Using the Volume Knob
The large volume knob on the control unit adjusts the overall output level of the GK-3B. This controls the signal sent to the connected synthesizer.
4.3. Utilizing the Select Switch
The select switch allows you to choose the audio source for your output:
- Normal Bass Tone: Outputs the natural sound of your bass guitar (if connected via a standard 1/4" cable to your amplifier).
- Synthesizer Sound: Outputs only the sound generated by the connected synthesizer.
- Mix: Outputs a blend of your normal bass tone and the synthesizer sound, allowing for layered effects.
5. Maintenance
The Roland GK-3B Bass Divided Pickup requires minimal maintenance. Keep the unit clean and free from dust and debris. Use a soft, dry cloth for cleaning. Avoid exposing the unit to extreme temperatures, moisture, or direct sunlight. Regularly check all connections to ensure they are secure.
6. Troubleshooting
If you encounter issues with your GK-3B, consider the following troubleshooting steps:
- No Sound or Intermittent Sound:
- Check all cable connections, especially the 13-pin cable to the synthesizer.
- Ensure the volume knob on the GK-3B control unit is turned up.
- Verify the select switch is in the desired position (Synthesizer or Mix).
- Confirm the connected synthesizer is powered on and configured correctly.
- Poor Tracking or Unreliable Triggering:
- Pickup Height: Ensure the divided pickup unit is at the correct height relative to the strings. If it's too far, tracking can be poor. If too close, it might interfere with string vibration.
- String Spacing: Verify that each string is directly over its corresponding pickup element. Adjust string spacing on the GK-3B if necessary.
- Playing Technique: Clean playing technique (clear plucking/picking, minimal string noise) can significantly improve tracking performance with guitar synthesizers.
- Synthesizer Settings: Check the input sensitivity and tracking settings on your connected synthesizer (e.g., Roland GR-55). These often need to be calibrated for optimal performance with your specific bass and playing style.
- Unwanted Noise:
- Check for loose connections or damaged cables.
- Ensure the unit is not placed too close to sources of electromagnetic interference.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | GK-3B |
| Item Weight | 1.23 pounds |
| Product Dimensions | 10.5 x 6 x 2.25 inches |
| Connector Type | 13-pin |
| Body Material | Plastic |
| Number of Strings Supported | Typically 4-6 (designed for bass) |
8. Warranty and Support
For information regarding warranty coverage, product support, or service, please refer to the documentation provided with your purchase or visit the official Roland/BOSS website. Contacting the manufacturer's customer support directly is recommended for any technical assistance or warranty claims.
Manufacturer: BOSS (a division of Roland Corporation)
Website: www.boss.info (or relevant regional Roland/BOSS site)
