MXR M303 Clone Looper Pedal User Manual

1. Einleitung

The MXR M303 Clone Looper Pedal is a compact effects unit designed for recording and layering audio loops. It offers up to 6 minutes of recording time with unlimited overdubs, and features such as double-speed, half-speed, and reverse playback. The pedal is equipped with an analog through-path and selectable buffered or true bypass switching to maintain signal integrity. Loops are stored even when the pedal is powered off.

Image 1.1: The MXR M303 Clone Looper Pedal, shown with three MXR patch cables and a 9V power adapter.

2. Packungsinhalt

• MXR M303 Klon-Looper-Pedal
• Dunlop ECB003 9V Power Adapter
• 3 MXR Premium Patch Cables (6-inch)

3. Bedienelemente und Anschlüsse

3.1 Bedienelemente auf der Oberseite

Abbildung 3.1: Oben view of the MXR M303 Clone Looper Pedal, highlighting the footswitches, knob, and indicator LEDs.

• REC/DUB Footswitch & LED (Red): Initiates recording, overdubbing, and undo/redo functions. The red LED indicates recording or overdubbing status.
• PLAY/STOP Footswitch & LED (Green): Controls loop playback and stopping. The green LED indicates playback status.
• Lautstärkeregler: Adjusts the output level of the loop.
• SPEED LED (Blue): Indicates when the loop is playing at half-speed or double-speed.
• REVERSE LED (Yellow): Indicates when the loop is playing in reverse.

3.2 Anschlüsse auf der Rückseite

Bild 3.2: Hinten view of the MXR M303 Clone Looper Pedal, showing the IN, OUT, CTR, EXP, and +9VDC jacks.

• IN-Buchse: 1/4-inch input for your instrument or other effects pedals.
• OUT-Buchse: 1/4-Zoll-Ausgang zu Ihrem amplifier or next effects pedal.
• CTR Jack: 1/4-inch input for an external MXR Tap Tempo Switch to control speed, reverse, and other functions.
• EXP Jack: 1/4-inch input for an external expression pedal (e.g., DVP volume pedal) to control loop output level, or an MXR Tap Tempo Switch for 'Play Loop Once' mode.
• +9VDC Jack: Power input for the included Dunlop ECB003 9V adapter.

4. Einrichtung

4.1 Stromanschluss

1. Connect the Dunlop ECB003 9V power adapter to the +9VDC jack on the rear of the pedal.
2. Stecken Sie das Netzteil in eine geeignete Steckdose.

Image 4.1: The Dunlop ECB003 9V power adapter, included with the pedal.

4.2 Audioverbindungen

1. Connect your instrument (e.g., guitar) or the output of another effects pedal to the IN jack using a 1/4-inch instrument cable.
2. Verbinden Sie AUS Klinke zu deinem amplifier or the input of the next effects pedal in your signal chain using a 1/4-inch instrument cable.

Image 4.2: An MXR premium patch cable, three of which are included for connecting pedals.

5. Bedienungsanleitung

5.1 Grundlegende Schleifenfunktionen

1. Aufnahme einer Schleife: Drücken Sie die AUFNAHME/DUB footswitch once. The red LED will illuminate, and recording will begin immediately. A flashing 4-count LED will precede the loop start to aid timing.
2. Ending the First Loop/Starting Playback: Drücken Sie die AUFNAHME/DUB footswitch again to end the initial recording and immediately begin playback. The red LED will turn off, and the green LED will illuminate.
3. Überspielen: While a loop is playing (green LED on), press the AUFNAHME/DUB footswitch once. The red LED will illuminate, indicating overdub mode. Play your additional layer. Press AUFNAHME/DUB again to stop overdubbing and return to playback.
4. Wiedergabe stoppen: While a loop is playing (green LED on), press the Wiedergabe/Stopp footswitch once. The green LED will turn off, and the loop will stop.
5. Resuming Playback: While the loop is stopped, press the Wiedergabe/Stopp footswitch once. The green LED will illuminate, and the loop will resume playback from the beginning.
6. Undoing the Last Overdub: While a loop is playing or stopped, press and hold the AUFNAHME/DUB footswitch for approximately 2 seconds. The last overdubbed layer will be removed.
7. Redoing the Last Overdub: After undoing an overdub, press and hold the AUFNAHME/DUB footswitch for approximately 2 seconds again to restore the undone layer.
8. Clearing All Loops: While a loop is playing or stopped, press and hold the Wiedergabe/Stopp footswitch for approximately 2 seconds. All recorded loops will be erased.

5.2 Loop Volume Adjustment

Der VOLUMEN knob controls the output level of the recorded loop. Rotate clockwise to increase volume and counter-clockwise to decrease it. This allows you to balance the loop's volume with your live instrument signal.

6. Erweiterte Funktionen

6.1 Speed Control (Half-Speed / Double-Speed)

While a loop is playing, quickly double-tap the AUFNAHME/DUB footswitch. Each double-tap will cycle through normal speed, half-speed (blue SPEED LED on), and double-speed (blue SPEED LED flashing). Half-speed doubles the loop length to 12 minutes, while double-speed halves it to 3 minutes.

6.2 Umkehrfunktion

While a loop is playing, quickly double-tap the Wiedergabe/Stopp footswitch. The loop will play in reverse, and the yellow REVERSE LED will illuminate. Double-tap again to return to forward playback.

6.3 External Control (CTR Jack)

Connect an MXR Tap Tempo Switch (sold separately) to the Klickrate jack for external control over various functions. Consult the Tap Tempo Switch manual for specific operations.

6.4 External Control (EXP Jack)

• Expression-Pedal: Connect a DVP volume pedal (sold separately) to the EXP jack to control the loop's output level externally.
• Play Loop Once Mode: Connect an MXR Tap Tempo Switch to the EXP jack. In this configuration, pressing the Tap Tempo Switch will play the loop once and then stop, allowing for stutter effects or precise loop triggering.

7. Wartung

To ensure optimal performance and longevity of your MXR M303 Clone Looper Pedal:

• Halten Sie das Pedal sauber und frei von Staub und Schmutz. Verwenden Sie zum Reinigen ein weiches, trockenes Tuch.
• Vermeiden Sie es, das Pedal extremen Temperaturen, hoher Luftfeuchtigkeit oder direkter Sonneneinstrahlung auszusetzen.
• Always use the specified 9V DC power adapter (Dunlop ECB003) to prevent damage.
• Disconnect power when the pedal is not in use for extended periods.

8. Fehlerbehebung

• Kein Ton:
  • Ensure all cables are securely connected to the correct IN and OUT jacks.
  • Verify the power adapter is properly connected and functioning.
  • Check the VOLUME knob position; ensure it is not set to minimum.
  • Test with different cables and a different power source if possible.
• Loop Not Recording/Overdubbing:
  • Stellen Sie sicher, dass das Pedal eingeschaltet ist.
  • Confirm the REC/DUB footswitch is being pressed correctly according to the operating instructions.
• Unerwartetes Verhalten:
  • Disconnect and reconnect power to reset the pedal.
  • Ensure no external controllers are inadvertently connected or sending conflicting signals to the CTR or EXP jacks.

9. Spezifikationen

10. Garantie und Support

For warranty information and technical support, please refer to the official MXR website or contact your authorized MXR dealer. Keep your proof of purchase for warranty claims.