1. Introducció
This manual provides essential information for the proper installation, operation, and maintenance of your DS18 ZXI8.4D 8-inch High Excursion Car Audio Subwoofer. Please read this manual thoroughly before attempting installation or operation to ensure optimal performance and safety. The DS18 ZXI8.4D is designed to deliver powerful, clear bass for your car audio system.

Imatge 1.1: Frontal view of the DS18 ZXI8.4D Subwoofer.
2. Característiques del producte
The DS18 ZXI8.4D subwoofer incorporates advanced design and materials for superior audio performance:
- High Excursion Design: Engineered for significant cone movement, allowing for deep and impactful bass reproduction.
- Dual Voice Coil (DVC) 4-Ohm: Offers flexible wiring options to match various ampconfiguracions de lifier.
- 2-inch Voice Coil: Constructed to handle high power levels efficiently, minimizing distortion.
- Large Foam Surround: Contributes to the high excursion capability and helps produce smooth, crisp bass.
- Pressed Paper Cone: Provides a balance of rigidity and lightness for accurate sound reproduction.
- Low Fs (Resonance Frequency): Suitable for use in various enclosure types, including larger boxes with lower tuning.
- Strong Stamped Basket: Features an exclusive DS18 design for durability and structural integrity.

Image 2.1: Key features of the DS18 ZXI8.4D Subwoofer.
3. Contingut del paquet
En obrir el paquet, comproveu que tots els elements hi siguin presents i que no estiguin danyats:
- DS18 ZXI8.4D 8-inch High Excursion Car Audio Subwoofer (1 unit)
- Manual d'instruccions (aquest document)
4. Especificacions
Refer to the table below for detailed technical specifications of the DS18 ZXI8.4D subwoofer:
| Especificació | Valor |
|---|---|
| Nom del model | ZXI |
| Tipus d'altaveu | Subwoofer |
| Característica especial | High Excursion |
| Usos recomanats | Àudio del cotxe |
| Dispositius compatibles | Equip de música per a cotxes, Ampmés viu |
| Diàmetre del subwoofer | 8 polzades |
| Color | Negre |
| Dimensions del producte (P x A x A) | 8.58 "P x 8.58" W x 6.83" H |
| Pes de l'article | 13.87 lliures (6.31 quilograms) |
| Impedància | 4 Ohm (bobina de veu dual) |
| Potència de sortida màxima dels altaveus | 1200 Watts (Max) / 600 Watts (RMS) |
| Tecnologia de connectivitat | Cablejat (RCA) |
| Resposta de freqüència | 25 Hz - 880 Hz |
| Sensibilitat | 86 dB |
| Pes de l'imant | 104 Oz (4 x 26 oz) Ferrite Magnet |
| Diàmetre de la bobina de veu | 2 polzades |
| Profunditat de muntatge | 5.51" / 140 mm |
| Recort del deflector de muntatge frontal | 7.31" / 185.8 mm |

Image 4.1: Dimensional specifications for installation.
5. Configuració i instal·lació
Una instal·lació correcta és crucial per al rendiment i la longevitat del vostre subwoofer. Es recomana que la instal·lació la realitzi un professional qualificat.
5.1 Precaucions de seguretat
- Desconnecteu el terminal negatiu de la bateria del vehicle abans de començar qualsevol treball elèctric.
- Assegureu-vos que tot el cablejat estigui correctament aïllat i fixat per evitar curtcircuits i danys.
- Use appropriate gauge wiring for power, ground, and speaker connections.
- Munteu el subwoofer de manera segura per evitar que es mogui durant el funcionament del vehicle.
5.2 Consideracions sobre el tancament
The ZXI8.4D subwoofer performs well in both sealed and ported enclosures. The choice of enclosure will affect the subwoofer's sound characteristics:
- Tancaments segellats: Typically provide tighter, more accurate bass response, suitable for musicality.
- Tancaments portats: Generally offer louder output and deeper bass extension, often preferred for SPL (Sound Pressure Level) applications.
Consult a car audio specialist or refer to specific enclosure design guidelines for optimal performance based on your preferences and vehicle.
5.3 Wiring the Dual Voice Coil (DVC) Subwoofer
The ZXI8.4D features a dual 4-ohm voice coil. This allows for various wiring configurations to achieve different final impedances, which must match your ampimpedància de funcionament estable del lificador.
- Cablejat en paral·lel (2 ohms): Connecteu els terminals positius de les dues bobines de veu i els terminals negatius de les dues bobines de veu. Connecteu el amplifier's output to these combined terminals. This configuration results in a 2-ohm load.
- Cablejat en sèrie (8 ohms): Connecteu el terminal positiu d'una bobina mòbil al terminal negatiu de l'altra bobina mòbil. Connecteu el amplifier's positive output to the remaining positive terminal and the amplifier's negative output to the remaining negative terminal. This configuration results in an 8-ohm load.
Caution: Incorrect wiring can damage your amplifier or subwoofer. Always verify the final impedance before connecting to an ampmés viu.
6. Instruccions de funcionament
6.1 Amplifier Matching and Settings
Assegureu-vos el vostre amplifier is capable of providing sufficient power (600W RMS) at the chosen impedance. Set amplifier gains carefully to avoid clipping and distortion, which can damage the subwoofer.
- Configuració de guany: Comença amb el amplifier gain at its minimum. Gradually increase the gain until the desired volume is reached without audible distortion.
- Filtre de pas baix (LPF): Configura l'LPF al teu amplifier or head unit to filter out high frequencies, typically between 60Hz and 100Hz, depending on your system and preference.
- Filtre subsònic: If available, set the subsonic filter to protect the subwoofer from playing frequencies below its resonant frequency, especially in ported enclosures.
6.2 Període de rodatge
Allow a break-in period of approximately 20-30 hours of moderate listening before operating the subwoofer at high volumes. This allows the suspension components (surround and spider) to loosen up, improving performance and longevity.
7. Manteniment
The DS18 ZXI8.4D subwoofer requires minimal maintenance to ensure long-term performance:
- Neteja: Netegeu periòdicament el con i el seu voltant amb un drap suau i sec per eliminar la pols i les restes. Eviteu utilitzar productes químics agressius o humitat excessiva.
- Inspecció: Regularly inspect the subwoofer for any signs of damage to the cone, surround, or wiring connections. Ensure mounting screws remain tight.
- Medi ambient: Protegiu el subwoofer de temperatures extremes, la llum solar directa i la humitat.
8. Solució De Problemes
Si teniu problemes amb el subwoofer, consulteu els passos habituals següents per a la resolució de problemes:
| Problema | Causa possible | Solució |
|---|---|---|
| Sense so | Sense poder amplifier; loose wiring; incorrect input signal; amplificador en mode de protecció. | Comproveu amplifier power and ground connections. Verify RCA input signal. Inspect all speaker wires for secure connection. Check amplifier status indicator. |
| So distorsionat | Amplifier gain set too high; incorrect LPF setting; damaged voice coil; enclosure issues. | Reduir amplifier gain. Adjust LPF. Inspect subwoofer cone and voice coil for physical damage. Verify enclosure integrity. |
| greus febles | Incorrect wiring impedance; insufficient amplifier power; phase issues; improper enclosure. | Confirm correct voice coil wiring for desired impedance. Ensure amplifier provides adequate power. Check phase setting on amplifier/head unit. Review enclosure design. |
If problems persist after troubleshooting, contact DS18 customer support or a qualified car audio technician.
9. Informació de la garantia
The DS18 ZXI8.4D Subwoofer is covered by a Garantia limitada. This warranty typically covers defects in materials and workmanship under normal use for a specified period from the date of purchase. It does not cover damage resulting from improper installation, abuse, accident, neglect, unauthorized repair, or modification.
For specific warranty terms, conditions, and claim procedures, please refer to the warranty card included with your product or visit the official DS18 weblloc web. Conserveu el comprovant de compra per al servei de garantia.
10. Suport
For technical assistance, product inquiries, or warranty claims, please contact DS18 customer support through their official weblloc web o la informació de contacte proporcionada amb la documentació de compra.
DS18 is a registered trademark. All rights reserved.





