1. Bubuka
The Donner DPM-1 Mechanical Metronome is a precision instrument designed to assist musicians in maintaining accurate tempo and rhythm during practice. This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your metronome.

Gambar 1: Hareupeun view of the Donner DPM-1 Mechanical Metronome.
2. Fitur Produk
- Wide Tempo Range: Capable of producing 40 to 208 beats per minute (BPM), suitable for various musical styles and practice needs.
- Adjustable Beat Selection: Offers beat selections of 0, 2, 3, 4, and 6, allowing for practice with different time signatures and rhythmic accents.
- Audible Wood Block Sound: Provides a clear and distinct wood block sound for beat indication, aiding in rhythm tracking, especially in environments with other instrument sounds.
- Operasi mékanis: Features a wind-up spring mechanism, eliminating the need for batteries and ensuring consistent, reliable performance.
- Konstruksi awét: Built with steel movement for longevity and a tempo tolerance of 1% for accuracy.
- Classic Pyramid Design: Sacara éstétisasing pyramid style with a central pendulum, a traditional design favored by musicians.

Gambar 2: Leuwihview of the metronome's rhythm patterns and tempo range.
3. Parentah Setup
- Unpack the Metronome: Carefully remove the metronome from its packaging.
- Cabut panutup hareup: Gently slide the front cover upwards and off the metronome to expose the pendulum and tempo scale.
- Remove the Pendulum Stopper: Locate the plastic or foam stopper that secures the pendulum during transport. Carefully remove this stopper. Retain it for future transport or storage.
- Angin mékanisme: Turn the winding key located on the side of the metronome clockwise until you feel resistance. Do not overwind.
- Teundeun dina Surface Stabil: Ensure the metronome is placed on a flat, stable surface to ensure accurate and consistent pendulum swing.

Figure 3: The metronome with its front cover removed, ready for use.
4. Parentah Operasi
- Set the Tempo (BPM): Adjust the sliding weight on the pendulum rod to the desired BPM. The scale on the rod indicates the tempo. Slide the weight up for a slower tempo and down for a faster tempo.
- Select the Beat: Use the beat selector lever on the side of the metronome to choose your desired beat pattern (0, 2, 3, 4, or 6). '0' indicates no accent, while other numbers indicate an accent on that beat.
- Start the Metronome: Gently push the pendulum to one side to initiate its swing. The metronome will begin to tick at the set tempo.
- Stop the Metronome: To stop the metronome, either allow the spring mechanism to unwind completely, or gently hold the pendulum until it stops swinging and replace the front cover.

Figure 4: The metronome in operation, providing a steady beat for musical practice.
5. Pangropéa
- beberesih: Wipe the exterior of the metronome with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Panyimpenan: When not in use for extended periods or during transport, replace the pendulum stopper and the front cover to protect the internal mechanism. Store in a dry, stable environment.
- Ngagulung: Always wind the metronome gently and avoid over-winding to prevent damage to the spring mechanism.
- Hindarkeun tetes: Mechanical metronomes are delicate instruments. Avoid dropping or subjecting the unit to strong impacts, as this can affect its accuracy and functionality.

Gambar 5: Detil view of the metronome's durable internal components.
6. Cara ngungkulan
- Metronome does not start: Ensure the spring mechanism is fully wound. Check that the pendulum stopper has been completely removed. Gently push the pendulum to initiate movement.
- Irregular beat: Verify that the metronome is placed on a perfectly flat and stable surface. Uneven surfaces can affect the pendulum's swing. Ensure the pendulum is not obstructed.
- Sound is too loud/soft: The volume of a mechanical metronome is generally not adjustable. Its design provides a clear, audible sound for practice. If the sound is unexpectedly low, check for any obstructions or internal issues.
- Pendulum stops prematurely: Ensure the metronome is fully wound. If the issue persists, the internal mechanism may require inspection.
7. Spésifikasi
| Nomer modél | DPM-1 |
| Item Beurat | 1.34 pon |
| Dimensi produk | 4.72 x 4.72 x 9.45 inci |
| Bahan Awak | Kai |
| Jenis Bahan | Kai |
| Ngaran Warna | Woodgrain-Red |
| Rentang Tempo | 40-208 BPM |
| Beat Selection | 0, 2, 3, 4, 6 |
| Tempo Tolerance | 1% |
8. Garansi jeung Rojongan
For warranty information and customer support, please refer to the documentation included with your product or visit the official Donner website. If you encounter any issues not covered in this manual, please contact Donner customer service for assistance.





