1. Introduzzjoni
The MXR M87 Bass Compressor is designed to bring studio-quality compression to your bass rig. This pedal offers a comprehensive set of controls to fine-tune your sound, from subtle dynamic control to pronounced compression effects. Featuring CHT™ Constant Headroom Technology, it ensures clear performance and ample headroom. The transparent compression allows your full dynamic range to pass through until the signal reaches the compression threshold, which is visually indicated by ten bright gain-reduction status LEDs. Encased in a durable, lightweight aluminum housing, the M87 is built for the road.
Karatteristiċi ewlenin:
- CHT™ Constant Headroom Technology for clear, clean performance.
- True bypass circuitry for uncolored tone when disengaged.
- Ten highly visible gain-reduction status LEDs for precise visual feedback.
- Transparent compression that preserves dynamic range until threshold.
- Durable, lightweight aluminum housing.
2. Kontrolli u Karatteristiċi Aktar minnview
The MXR M87 Bass Compressor features a complete array of controls to shape your bass tone effectively.

Figura 1: Fuq view of the MXR M87 Bass Compressor, showing the control knobs and footswitch.
Pumi tal-kontroll:
- ATTAKK: Adjusts how quickly the compressor reacts to the input signal. Higher settings result in a slower attack, allowing more of the initial transient to pass through.
- ĦLAS: Controls how quickly the compressor returns to its uncompressed state after the signal drops below the threshold. Higher settings result in a slower release.
- RAPPORT: Determines the amount of compression applied once the signal exceeds the threshold. Higher ratios mean more aggressive compression.
- DĦUL: Sets the input level of your bass signal into the compressor. This control also affects when the compression threshold is met.
- RIŻULTAT: Jaġġusta l-volum ġenerali tal-ħruġ tal-pedala.
Indikaturi LED:
- LEDs TA' TNAQQIS TAL-QISGĦ: Ten bright LEDs provide visual feedback on the amount of gain reduction being applied in real-time. This helps in precisely setting the compression.
- LED STATUS: Indicates whether the pedal is engaged (on) or in true bypass mode (off).
Jacks and Footswitch:

Figura 2: Ġenb view of the MXR M87 Bass Compressor, highlighting the input and output jacks.
- Jack INPUT: Connect your bass guitar or the output of another pedal to this 1/4-inch input.
- Jack tal-ĦRUĠ: Connect this 1/4-inch output to your amplifier or the input of the next pedal in your signal chain.
- POWER Jack: Connect a 9V DC power adapter (not included) to this jack.
- Swiċċ tas-saqajn BYPASS: Toggles the effect on and off. The pedal features true bypass, ensuring your tone remains unaffected when the pedal is disengaged.
3. Setup
Follow these steps to set up your MXR M87 Bass Compressor:
- Qabbad il-kitarra bass tiegħek mal- INPUT jack of the M87 using a standard 1/4-inch instrument cable.
- Qabbad il- ĦRUĠ jack of the M87 to your amplifikatur jew il-pedala li jmiss fil-katina tas-sinjali tiegħek billi tuża kejbil ieħor tal-istrument ta' 1/4 pulzier.
- Connect a 9V DC power adapter (not included) to the QAWWA jack on the side of the pedal. Ensure the power supply meets the pedal's requirements (9V DC, center-negative).
- Ixgħel tiegħek amplifier and adjust its volume to a suitable level.
Vidjo 1: Overview of the MXR M87 Bass Compressor, demonstrating its features and connections.
4. Istruzzjonijiet Operattivi
The MXR M87 Bass Compressor is designed for intuitive operation. Experiment with the controls to find the perfect compression for your playing style and musical context.
Operazzjoni Bażika:
- Engage the pedal by pressing the BYPASS Swiċċ tas-saqajn. The STATUS LED will illuminate.
- Start with all control knobs (ATTACK, RELEASE, RATIO, INPUT, OUTPUT) at their 12 o'clock positions.
- Play your bass and adjust the INPUT knob until the GAIN REDUCTION LEDs show consistent activity, indicating that the compressor is engaging.
- Aġġusta l- PROPORZJONI knob to control the intensity of the compression. Lower ratios provide subtle smoothing, while higher ratios create a more pronounced, squashed effect.
- Irfina l- ATTAKK u ĦLAS knobs to shape the transient response and sustain characteristics. Faster attack settings will compress the initial pluck more, while slower attacks allow more punch. Faster release settings will return to uncompressed sound quickly, while slower releases provide longer sustain.
- Uża l- ĦRUĠ knob to match the volume of the compressed signal to your bypassed signal, or to provide a boost if desired.
Tips for Tone Shaping:
- For subtle peak limiting and dynamic control, use a lower RATIO setting (e.g., 2:1 or 4:1) with moderate INPUT.
- To achieve a more sustained and punchy tone, increase the RATIO and adjust ATTACK to be slightly slower, allowing the initial transient to cut through before compression engages.
- The GAIN REDUCTION LEDs are crucial for understanding how the compressor is reacting to your playing. Aim for consistent, but not excessive, gain reduction for natural-sounding compression.
5. Speċifikazzjonijiet
| Speċifikazzjoni | Valur |
|---|---|
| Piż tal-oġġett | 11.68 uqija |
| Dimensjonijiet tal-Prodott | 2.6"T x 6"W x 4.4"Għ |
| Numru tal-Mudell tal-Oġġett | M87 |
| Materjal tal-Korp | Aluminju |
| Kulur | Abjad |
| Tip ta' Konnettur | Jack tal-awdjo ta' 1/4 pulzier (6.35mm) |
| Interface tal-Ħardwer | Awdjo 1/4-il pulzier |
| Format tas-Sinjal | Analogu |
| Sors tal-Enerġija | Corded Elettriku |
| Voltage | 9 Volts |
| Batteriji | 1 9V battery required (not included) |
6. Manutenzjoni
To ensure the longevity and optimal performance of your MXR M87 Bass Compressor, follow these maintenance guidelines:
- Tindif: Use a soft, dry cloth to clean the pedal's exterior. Avoid abrasive cleaners or solvents, as they may damage the finish.
- Ħażna: Store the pedal in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove any batteries to prevent leakage.
- Konnessjonijiet: Periodically check all input/output jacks and power connections for any signs of wear or corrosion. Ensure cables are securely plugged in during use.
- Provvista tal-Enerġija: Always use a regulated 9V DC, center-negative power supply to prevent damage to the pedal.
7 Issolvi l-problemi
If you encounter issues with your MXR M87 Bass Compressor, refer to the following common troubleshooting steps:
- Ebda Ħsejjes:
- Iċċekkja l-konnessjonijiet kollha tal-kejbil (strument, amplifer, qawwa).
- Kun żgur li l-provvista tal-enerġija hija konnessa sew u qed taħdem.
- Ivverifika li l-istrument tiegħek u ampIl-lifer qed jaħdmu sew billi tinjora l-pedala.
- Check the OUTPUT knob setting; ensure it is not turned down completely.
- Ħoss/Ħoss mhux mixtieq:
- Ensure you are using a high-quality, isolated power supply.
- Iċċekkja għal kejbils difettużi.
- Try the pedal in a different location to rule out electrical interference.
- Adjust the INPUT and OUTPUT knobs to avoid overdriving your amplifier jew pedali oħra.
- Compression Not Engaging:
- Żid il- INPUT knob setting. The GAIN REDUCTION LEDs should light up when compression is active.
- Tiżgura l- PROPORZJONI knob is set above its minimum value.
8. X'hemm fil-Kaxxa
Your MXR M87 Bass Compressor package includes:
- MXR Bass Compressor Pedal
9. Garanzija u Appoġġ
For warranty information and technical support, please refer to the official MXR webis-sit jew ikkuntattja lin-negozjant awtorizzat tiegħek. Żomm il-prova tax-xiri tiegħek għal kwalunkwe talba ta' garanzija.





