Fishman LFSHMODGE2
Fishman G-II Acoustic Instrument Preamp User Manual
Model: LFSHMODGE2 | Brand: Fishman
Introduction
The Fishman G-II Acoustic Instrument Preamp is designed to enhance the sound of acoustic instruments equipped with Piezo-style pickups. It is compatible with a wide range of instruments including acoustic guitars, violins, violas, cellos, and mandolins. This portable preamp delivers a clean, transparent sound and offers extended battery life, making it ideal for various performance and recording environments.
Key Features:
- Optimized for Piezo-style pickups to maximize frequency response.
- Extended battery life of up to 400 hours.
- Intuitive controls for Volume, Bass, and Treble.
- Durable, lightweight injection-molded casing.
- Includes a heavy-duty stainless-steel belt clip for portability.
Product Overview

Figure 1: Front view of the Fishman G-II Preamp. This image displays the unit's compact design, the Fishman logo, the G-II model designation, and the control sliders for Bass, Treble, and Volume. It also shows the 9V DC input, and the Output and Input jacks.
The Fishman G-II features a straightforward interface for ease of use. The front panel includes slider controls for adjusting your instrument's tone and output level.
- Bass Control: Adjusts the low-frequency response of your instrument.
- Treble Control: Adjusts the high-frequency response of your instrument.
- Volume Control: Adjusts the overall output level of the preamp.
- Input Jack: Connects your instrument's pickup.
- Output Jack: Connects to an amplifier, mixer, or recording device.
- 9V DC Input: For optional external power supply (not included).
- Battery Compartment: Located on the back for a 9V battery.
Setup
- Power Supply: Open the battery compartment on the back of the unit and insert a fresh 9V battery, ensuring correct polarity. Alternatively, connect an optional 9V DC power adapter to the 9V DC input jack.
- Instrument Connection: Connect your instrument's Piezo-style pickup to the Input jack on the preamp using a standard 1/4-inch instrument cable.
- Output Connection: Connect the Output jack of the preamp to your amplifier, mixer, or audio interface using another standard 1/4-inch instrument cable.
- Secure Placement: Utilize the integrated stainless-steel belt clip to attach the preamp to your belt, strap, or instrument case for convenient access during performance.
Operating Instructions
Once the Fishman G-II is connected, you can begin adjusting your sound.
- Initial Settings: Start with the Bass, Treble, and Volume sliders set to their center (neutral) positions.
- Adjusting Volume: Slowly increase the Volume slider to achieve the desired output level. Be mindful of feedback, especially at high volumes.
- Tone Shaping (Bass & Treble):
- Move the Bass slider up to increase low-end frequencies for a fuller sound, or down to reduce muddiness.
- Move the Treble slider up to add clarity and brightness, or down to soften harsh high frequencies.
- Power On/Off: The unit powers on automatically when an instrument cable is inserted into the input jack. To conserve battery life, always disconnect the input cable when the preamp is not in use.
Maintenance
- Cleaning: Wipe the unit with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Battery Replacement: Replace the 9V battery when the sound becomes weak or distorted, or if the unit fails to power on. Always use a fresh, high-quality alkaline battery.
- Storage: Store the preamp in a cool, dry place away from direct sunlight and extreme temperatures. Remove the battery if storing for extended periods to prevent leakage.
- Cable Care: Ensure all cables are in good condition and properly connected to prevent signal loss or noise.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound | Dead battery; Input cable not fully inserted; Output cable disconnected; Amplifier off/muted. | Replace battery; Ensure input cable is fully inserted; Check output cable connection; Turn on/unmute amplifier. |
| Weak or Distorted Sound | Low battery; Incorrect volume setting; Damaged cables. | Replace battery; Adjust volume slider; Check and replace cables if necessary. |
| Excessive Feedback | Volume too high; Proximity to amplifier; Room acoustics. | Reduce volume; Increase distance from amplifier; Adjust Bass/Treble controls; Consider a feedback suppressor. |
| Hum or Noise | Ground loop; Faulty cables; Interference from other electronics. | Use a grounded power supply; Try different cables; Move away from other electronic devices. |
Specifications
- Model: LFSHMODGE2
- Dimensions (L x W x H): 6.75 x 4.75 x 2.25 inches
- Weight: 1.6 ounces (0.1 pounds)
- Power Source: 9V Battery (1 required) or optional 9V DC adapter
- Battery Life: Up to 400 hours (approximate)
- Controls: Volume, Bass, Treble
- Input/Output: 6.35mm (1/4 inch) Jack
- Compatible Devices: Acoustic Guitar, Violin, Viola, Cello, Mandolin (with Piezo-style pickups)
- Material: Injection-molded case with stainless-steel belt clip
Warranty and Support
For warranty information and technical support, please refer to the official Fishman website or contact Fishman customer service directly. Keep your purchase receipt as proof of purchase.
Fishman Official Website: www.fishman.com
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