1. Introducció
This manual provides detailed instructions for the installation, operation, and maintenance of your AIYIMA 5.25 Inch Subwoofer Sound Speaker Driver. Designed for home theater and Hi-Fi audio systems, this woofer delivers powerful low-frequency sound. Please read this manual thoroughly before use to ensure optimal performance and longevity of your speaker driver.
2. Producte acabatview
The AIYIMA 5.25 Inch Subwoofer Sound Speaker Driver is a high-quality component designed to reproduce deep and accurate bass frequencies. It features a robust construction suitable for various audio applications, including custom speaker builds and replacements in existing systems. Available in 4 Ohm and 8 Ohm impedance options, it offers flexibility for different ampconfiguracions de lifier.

Figura 2.1: Frontal view of the speaker driver.

Figure 2.2: 8 Ohm Speaker Driver variant.

Figure 2.3: 4 Ohm Speaker Driver variant.
3. Especificacions
Refer to the table below for detailed technical specifications of the speaker driver.
| Paràmetre | Valor |
|---|---|
| Diàmetre de la unitat | 5.25 inches (Outer diameter 133mm) |
| Resistance (Impedance) | 4-8Ω ± 15% |
| Potència nominal | 20-40W |
| Peak Power (PMPO) | 120W |
| Sensibilitat | 88 dB |
| Qts | 0.55 |
| Resposta de freqüència | 68Hz-4500Hz |
| Resonant Frequency (FO) | 68 Hz |
| Volum equivalent | 6.5L |
| Screw Diagonal Hole Spacing | 140 MM |
| Speaker Opening Diameter | 120 MM |
| Alçada de l'altaveu | 75 MM |
| Speaker Countersink | 4 MM |
| Crossover d'àudio | Bidireccional |
| Material | Metall (material del gabinet) |
| Certificació | CE, RoHS |

Figure 3.1: Speaker front dimensions.

Figure 3.2: Speaker side dimensions.

Figure 3.3: Thiele Small Parameters.

Figure 3.4: Frequency Response Graph.
4. Configuració
Proper installation is crucial for the performance of your speaker driver. Follow these steps carefully:
- Enclosure Preparation: Design or select an appropriate speaker enclosure (box) with an internal volume of approximately 6.5 liters, as indicated by the equivalent volume (Vas) specification. Ensure the speaker opening diameter is 120mm.
- Muntatge: Secure the speaker driver into the prepared opening using screws. The screw diagonal hole spacing is 140mm. Ensure a tight seal between the speaker frame and the enclosure to prevent air leaks, which can negatively impact bass response.
- Cablejat: Connect the speaker terminals to your amplifier or crossover network. The speaker has two terminals, typically marked for positive (+) and negative (-). Ensure correct polarity to avoid phase issues in your audio system. This speaker supports audio line communication.
- Crossover Integration: As this is a subwoofer/woofer, it is designed for low-frequency reproduction. It is recommended to use an appropriate crossover network to filter out higher frequencies, directing only the bass signals to this driver. The speaker is designed for a two-way audio crossover system.
5. Instruccions de funcionament
Once installed, operate your speaker driver as part of your complete audio system:
- Encès: Enceneu el vostre amplificador i font d'àudio.
- Control de volum: Start with a low volume level and gradually increase it to your desired listening level. Avoid excessively high volumes that cause audible distortion, as this can damage the speaker.
- Període d'entrada: New speaker drivers often benefit from a 'break-in' period. Play music at moderate volumes for several hours to allow the suspension components to loosen up, which can improve sound quality.
- Integració del sistema: For optimal performance, ensure your amplifier's output impedance matches the speaker's impedance (4 Ohm or 8 Ohm). If using a dedicated subwoofer amplifier, adjust its gain and crossover frequency settings to blend seamlessly with your main speakers.
6. Manteniment
To ensure the longevity and performance of your speaker driver, follow these maintenance guidelines:
- Neteja: Gently wipe the cone and surround with a soft, dry cloth to remove dust. Avoid using harsh chemicals or excessive moisture.
- Condicions ambientals: Keep the speaker in a dry environment, away from direct sunlight, extreme temperatures, and high humidity.
- Protecció: Avoid physical impact to the speaker cone or surround. If the speaker is exposed, consider using a protective grille.
- Comprovació del cablejat: Reviseu periòdicament les connexions del cablejat per assegurar-vos que estiguin ben fixades i que no presentin corrosió.
7. Solució De Problemes
If you encounter issues with your speaker driver, refer to the following troubleshooting tips:
| Problema | Causa possible | Solució |
|---|---|---|
| No hi ha so de l'altaveu | Cablejat solt o incorrecte Amplifier off or faulty Problema amb la font d'àudio | Check all wiring connections for proper polarity and secure fit. Ensure amplifier is powered on and functioning. Verify audio source is playing correctly. |
| So distorsionat | Volum massa alt Configuració incorrecta del crossover Damaged speaker cone/voice coil | Reduce volume. Adjust crossover frequency on amplifier/receiver. Inspect speaker for visible damage; if damaged, replacement may be necessary. |
| Baixos febles o fangosos | Incorrect enclosure volume Problemes de fase Insuficient amppotència de lificació | Ensure enclosure volume matches recommended specifications. Check speaker polarity. Verify amplifier provides adequate power (20-40W RMS). |
| Speaker makes buzzing noise | Muntatge solt Voice coil rubbing Interferència del bucle de terra | Tighten mounting screws. If voice coil rub is suspected, speaker may be damaged. Check for ground loop issues in your audio system. |
8. Consells d'usuari
- Potència RMS: While the peak power is 120W, the rated power (RMS) is 20-40W. It's best to match your amplifier's output to the rated power for sustained, clean audio without risking damage.
- Rendiment de baix: This speaker is noted for good bass reproduction, particularly for music genres like organ music. However, for very dynamic and demanding low-frequency content, such as heavy drum beats, it might not provide the deepest excursion. It is primarily designed for home audio, not high-SPL concert or car audio applications.
- Low-Frequency Focus: The speaker excels at low frequencies, especially around 60Hz. Ensure your audio system's crossover is set to leverage this characteristic for optimal sound.
- Disseny de tancament: The quality of your speaker enclosure significantly impacts the performance of this driver. A well-designed and sealed enclosure is crucial for achieving tight and impactful bass.
9. Garantia i Suport
AIYIMA products are manufactured to high-quality standards. For any technical support, warranty claims, or service inquiries, please contact your retailer or the official Aiyima support channels. Keep your purchase receipt as proof of purchase for warranty purposes.