1. הקדמה
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.
תכונות עיקריות:
- 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. בקרות ותכונות מעלview
The MXR M87 Bass Compressor features a complete array of controls to shape your bass tone effectively.

איור 1: למעלה view of the MXR M87 Bass Compressor, showing the control knobs and footswitch.
ידיות שליטה:
- לִתְקוֹף: 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.
- שחרור: Controls how quickly the compressor returns to its uncompressed state after the signal drops below the threshold. Higher settings result in a slower release.
- יַחַס: Determines the amount of compression applied once the signal exceeds the threshold. Higher ratios mean more aggressive compression.
- קֶלֶט: Sets the input level of your bass signal into the compressor. This control also affects when the compression threshold is met.
- תפוקה: מכוונן את עוצמת הקול הכוללת של הדוושה.
מחווני LED:
- נוריות הפחתת רווח: Ten bright LEDs provide visual feedback on the amount of gain reduction being applied in real-time. This helps in precisely setting the compression.
- סטטוס LED: Indicates whether the pedal is engaged (on) or in true bypass mode (off).
Jacks and Footswitch:

איור 2: צד view of the MXR M87 Bass Compressor, highlighting the input and output jacks.
- שקע קלט: Connect your bass guitar or the output of another pedal to this 1/4-inch input.
- OUTPUT ג'ק: Connect this 1/4-inch output to your amplifier או הקלט של הדוושה הבאה בשרשרת האותות שלך.
- שקע POWER: Connect a 9V DC power adapter (not included) to this jack.
- מעקף רגליים: Toggles the effect on and off. The pedal features true bypass, ensuring your tone remains unaffected when the pedal is disengaged.
3. התקנה
Follow these steps to set up your MXR M87 Bass Compressor:
- חבר את גיטרת הבס שלך ל קֶלֶט jack of the M87 using a standard 1/4-inch instrument cable.
- חבר את תְפוּקָה jack of the M87 to your amplifier או את הדוושה הבאה בשרשרת האיתות שלך באמצעות כבל מכשיר נוסף בגודל 1/4 אינץ'.
- Connect a 9V DC power adapter (not included) to the כּוֹחַ jack on the side of the pedal. Ensure the power supply meets the pedal's requirements (9V DC, center-negative).
- הפעל את שלך amplifier and adjust its volume to a suitable level.
סרטון 1: אוברview of the MXR M87 Bass Compressor, demonstrating its features and connections.
4. הוראות הפעלה
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.
פעולה בסיסית:
- Engage the pedal by pressing the מתג רגלי BYPASS. 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 קֶלֶט knob until the GAIN REDUCTION LEDs show consistent activity, indicating that the compressor is engaging.
- התאם את יַחַס knob to control the intensity of the compression. Lower ratios provide subtle smoothing, while higher ratios create a more pronounced, squashed effect.
- כוונן את לִתְקוֹף ו לְשַׁחְרֵר 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.
- השתמש ב- תְפוּקָה 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. מפרטים
| מִפרָט | עֵרֶך |
|---|---|
| משקל פריט | 11.68 אונקיות |
| מידות המוצר | אורך 2.6 אינץ', רוחב 6 אינץ', גובה 4.4 אינץ' |
| מספר דגם של פריט | M87 |
| חומר גוף | אֲלוּמִינְיוּם |
| צֶבַע | לָבָן |
| סוג מחבר | שקע שמע בגודל 6.35 מ"מ (1/4 אינץ') |
| ממשק חומרה | אודיו בגודל 1/4 אינץ' |
| פורמט אותות | אנלוגי |
| מקור כוח | חשמלי עם כבלים |
| כרך ידtage | 9 וולט |
| סוללות | 1 9V battery required (not included) |
6. תחזוקה
To ensure the longevity and optimal performance of your MXR M87 Bass Compressor, follow these maintenance guidelines:
- ניקוי: השתמשו במטלית רכה ויבשה לניקוי החלק החיצוני של הדוושה. הימנעו מחומרי ניקוי שוחקים או ממסים, מכיוון שהם עלולים לפגוע בגימור.
- אִחסוּן: 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.
- חיבורים: Periodically check all input/output jacks and power connections for any signs of wear or corrosion. Ensure cables are securely plugged in during use.
- ספק כוח: Always use a regulated 9V DC, center-negative power supply to prevent damage to the pedal.
7. פתרון תקלות
If you encounter issues with your MXR M87 Bass Compressor, refer to the following common troubleshooting steps:
- אין צליל:
- בדוק את כל חיבורי הכבלים (מכשיר, ampמשחרר, כוח).
- ודא שספק הכוח מחובר כראוי ופועל.
- ודא שהכלי שלך ו ampהמאיצים פועלים כראוי על ידי עקיפת הדוושה.
- Check the OUTPUT knob setting; ensure it is not turned down completely.
- רעש/זמזום לא רצוי:
- ודא שאתה משתמש בספק כוח מבודד ואיכותי.
- בדוק אם יש כבלים פגומים.
- Try the pedal in a different location to rule out electrical interference.
- Adjust the INPUT and OUTPUT knobs to avoid overdriving your ampליפר או דוושות אחרות.
- Compression Not Engaging:
- הגדל את ה קֶלֶט knob setting. The GAIN REDUCTION LEDs should light up when compression is active.
- להבטיח את יַחַס knob is set above its minimum value.
8. מה בקופסה
Your MXR M87 Bass Compressor package includes:
- MXR Bass Compressor Pedal
9. אחריות ותמיכה
For warranty information and technical support, please refer to the official MXR webאתר או צור קשר עם הספק המורשה שלך. שמור את הוכחת הרכישה שלך עבור כל תביעת אחריות.





