Introduction
The MXR Bass Envelope Filter M82 is an analog effect pedal designed specifically for bass guitar, delivering classic envelope filter sounds. It features independent controls for dry and effect signals, allowing for precise blending without sacrificing low-end frequencies. The pedal's wide range of filter tones can be adjusted using the Decay and Q controls, while the Sensitivity knob adapts the pedal's response to your playing dynamics and bass type (passive or active). Built with robust power supply circuitry for protection against voltage issues and true-bypass switching to maintain signal integrity, the M82 is housed in a durable, compact aluminum enclosure.
Key Features
- Bypass Footswitch with LED: Engages or disengages the effect, with an LED indicator for status.
- Dry Control: Adjusts the level of the unaffected bass signal.
- FX Control: Adjusts the level of the effected signal.
- Decay Control: Shapes the filter's sweep time.
- "Q" Control: Adjusts the filter's resonance or intensity.
- Sensitivity Control: Tailors the filter's response to playing dynamics and instrument output.
- True Bypass Switching: Preserves original tone when the effect is off.
- Durable Aluminum Housing: Compact and road-ready design.
Setup Guide
Powering the Pedal
The MXR Bass Envelope Filter M82 requires an external 9-volt DC power adapter (e.g., Dunlop ECB003) with a center-negative polarity. This pedal does not have an internal battery compartment. Ensure the power source meets the pedal's requirements to prevent damage.
Connecting Your Pedal
- Connect your bass guitar to the INPUT jack on the right side of the pedal using a standard 1/4-inch instrument cable.
- Connect the OUTPUT jack on the left side of the pedal to your amplifier or the next pedal in your signal chain using another 1/4-inch instrument cable.
- Connect a 9-volt power adapter to the 9V power input jack.
Image: Rear view of the MXR Bass Envelope Filter M82 pedal. This image highlights the 1/4-inch input jack, the 1/4-inch output jack, and the 9V power input jack, along with regulatory markings. This is where you connect your instrument, amplifier, and power supply.
Image: Side view of the MXR Bass Envelope Filter M82 pedal, clearly showing the 1/4-inch output jack. This jack connects to your amplifier or the next pedal in your signal chain.
Image: Side view of the MXR Bass Envelope Filter M82 pedal, clearly showing the 1/4-inch input jack. Your bass guitar connects here.
Operating Instructions
Image: Top view of the MXR Bass Envelope Filter M82 pedal, displaying all control knobs (Dry, FX, Decay, Q, Sensitivity) and the footswitch with its LED indicator. This is the primary interface for adjusting the pedal's sound.
Controls Overview
- DRY Knob:
- Controls the volume of your unaffected, direct bass signal. Use this to retain your instrument's natural low-end and blend it with the effect.
- FX Knob:
- Controls the volume of the envelope filter effect signal. Adjust this to determine how prominent the filter sound is in your mix.
- DECAY Knob:
- Adjusts the speed at which the filter sweep closes. Turning it clockwise results in a slower, longer sweep, while counter-clockwise settings produce a faster, snappier sweep.
- Q Knob:
- Determines the intensity or resonance of the filter effect. Higher 'Q' settings create a more pronounced, vocal-like "wah" sound, while lower settings are more subtle.
- SENSITIVITY Knob:
- Sets the threshold for the envelope filter's response to your playing dynamics. Adjust this to match your bass's output level (passive or active) and your picking/plucking attack. Turning it clockwise increases sensitivity, making the filter react to lighter playing.
- FOOTSWITCH:
- Toggles the effect on and off. The adjacent LED illuminates when the effect is active.
Achieving Desired Tones
- Funk Tones: Start with high Sensitivity, moderate Q, and a fast Decay. Adjust Dry/FX to taste.
- Subtle Filter: Use lower Q and Sensitivity settings, with a higher Dry mix.
- Long Sweeps: Increase the Decay knob for a slower, more drawn-out filter movement.
- Experiment with the Sensitivity knob to find the sweet spot where the filter responds naturally to your playing style and instrument's output.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the pedal's exterior. Avoid abrasive cleaners or solvents.
- Storage: Store the pedal in a dry environment, away from extreme temperatures and humidity.
- Power Supply: Always use a regulated 9V DC power supply with a center-negative polarity. Using an incorrect power supply can damage the unit.
- Connections: Ensure all cables are securely connected to prevent signal loss or intermittent operation.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound when pedal is engaged. |
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| Effect is too subtle or not responding. |
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| Effect is too harsh or overwhelming. |
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| Loss of low-end frequencies. | Dry knob set too low. | Increase the Dry knob to blend in more of your original bass signal. |
Specifications
| Model Number | M82 |
| Item Weight | 10.9 ounces (approx. 309 grams) |
| Product Dimensions | 6 x 4.5 x 2.5 inches (approx. 15.24 x 11.43 x 6.35 cm) |
| Power Source | 9V DC (external power adapter required, center-negative) |
| Voltage | 9.00V |
| Hardware Interface | 1/4-inch Audio Input/Output |
| Signal Format | Analog |
| Housing Material | Durable Aluminum |
| Color Name | Purple |
Warranty and Support
For warranty information and technical support, please refer to the official MXR website or contact your authorized dealer. Keep your purchase receipt as proof of purchase for any warranty claims.
Online Resources: Visit the official MXR website
