1. Nhanganyaya
This manual provides detailed instructions for the proper installation, operation, and maintenance of your Gravity G3-12D4 12-inch car audio subwoofer and Gravity WZ3000.1D Class D amplifier, along with the included 4-gauge amplifier installation kit. Please read this manual thoroughly before beginning installation to ensure correct setup and optimal performance.
2. Safety Information
Gara uchicherechedza zvinotevera zvekuchengetedza panguva yekuisa uye kushanda:
- Disconnect the vehicle's negative battery terminal before any wiring to prevent electrical shorts.
- Iva nechokwadi chekuti waya dzese dzakarongwa zvakanaka uye dzakabatana zvakanaka kudzivirira kukuvara kubva kumicheto yakapinza kana zvikamu zvinofamba.
- Use appropriate gauge wiring as specified in this manual to handle current loads and prevent overheating.
- Install fuses at the battery and near the amplifier as instructed to protect against power surges.
- Avoid mounting components in locations that obstruct vehicle operation or safety features.
- Do not expose components to excessive moisture or extreme temperatures.
- Tsvaga rubatsiro rwenyanzvi kana usina chokwadi nezvematanho ekuisa.
3. Package Zviri mukati
Ona kuti zvinhu zvese zviripo mupasuru yako:
- Gravity G3-12D4 12-inch Car Audio Subwoofer
- Gravity WZ3000.1D Class D Amplifier
- 4 Gauge Amplifier Installation Kit, including:
- 17 ft. 4 Gauge Power Cable
- 3 ft. 4 Gauge Ground Cable
- Inline AGU Fuse Holder with 80A + 100A Fuses
- 17 ft. Double Shielded RCA Cable
- 17 ft. 18 Gauge Turn-On Cable
- 20 ft. 16 Gauge Speaker Wire
- All necessary accessories and terminals
- Kiyi Yekudzora Bass Remote
4. Zvigadzirwa zveChigadzirwa
Gravity G3-12D4 Subwoofer
- Dual 4 Ohm Voice Coil Configuration
- Competition Grade Pressed Paper Cone
- Yakakwirira Roll Foam Yakapoteredza
- Advanced Air Flow Cooling System
Gravity WZ3000.1D Amplifier
- Class D MOSFET Power Amplifier
- Stable at 1 Ohm, 2 Ohm, and 4 Ohm loads
- High and Low Level Inputs
- Variable Low Pass Crossover (LPF)
- Anoshanduka Bass Boost
- Subsonic Firita
4 Gauge AmpLifier Installation Kit
- High Quality Thick 4 Gauge Power and Ground Cables
- Inline AGU Fuse Holder with multiple fuses for protection
- True Sound Double Shielded RCA Cable for clear signal transmission
- Complete set of accessories and terminals for a professional installation
5. Setup uye Kuiswa
Proper installation is crucial for performance and safety. If you are not confident in your ability to install this system, please consult a professional installer.
5.1. Mounting the Subwoofer
The G3-12D4 subwoofer requires a suitable enclosure (not included) for optimal performance. Ensure the enclosure is properly sealed and sized according to subwoofer specifications. Mount the subwoofer securely to the enclosure using appropriate screws, ensuring a tight seal around the mounting flange.

Mufananidzo: Mberi view of the Gravity G3-12D4 12-inch subwoofer, showing the black cone with a red Gravity logo and red stitching on the foam surround.

Mufananidzo: Rear view of the Gravity G3-12D4 12-inch subwoofer, displaying the magnet structure and speaker terminals.
5.2. Kuisa Amplifier
Select a mounting location for the WZ3000.1D amplifier that is dry, well-ventilated, and protected from physical damage. Common locations include under a seat, in the trunk, or mounted to a custom amplifier rack. Ensure there is sufficient airflow around the amplifier for cooling. Secure the amplifier firmly using screws.

Mufananidzo: Side view of the Gravity WZ3000.1D amplifier, showing the heat sink fins for cooling.
5.3. Wiring the System
Follow these steps carefully for wiring the amplifier and subwoofer:
- Power Cable (Red 4 Gauge): Run the 17 ft. 4 gauge power cable from the vehicle's positive battery terminal to the amplifier location. Install the inline AGU fuse holder within 18 inches (45 cm) of the battery. Do not insert the fuse until all wiring is complete.
- Ground Cable (Black 4 Gauge): Connect the 3 ft. 4 gauge ground cable from the amplifier's ground terminal to a clean, unpainted metal surface on the vehicle chassis. Ensure a solid, low-resistance connection. The ground point should be as short as possible.
- Remote Turn-On Cable (Blue 18 Gauge): Connect the 17 ft. 18 gauge turn-on cable from the amplifier's REM terminal to the remote turn-on output of your head unit. This cable signals the amplifier to turn on and off with the head unit.
- RCA Signal Cables: Connect the 17 ft. double shielded RCA cable from the RCA outputs of your head unit to the RCA INPUTs on the WZ3000.1D amplifier.
- Speaker Wiring (16 Gauge): Connect the 20 ft. 16 gauge speaker wire from the amplifier's speaker output terminals to the G3-12D4 subwoofer. Ensure correct polarity (+ to + and - to -). For a single G3-12D4 (dual 4-ohm voice coils), you can wire the voice coils in parallel for a 2-ohm load or in series for an 8-ohm load. The WZ3000.1D amplifier is stable down to 1 ohm, so a 2-ohm parallel configuration is recommended for maximum power output.
- Remote Bass Control: Connect the remote bass control knob to the dedicated REMOTE port on the amplifier. Mount the knob in an accessible location for easy adjustment.

Image: Front panel of the Gravity WZ3000.1D amplifier, displaying RCA inputs, remote control port, and various adjustment knobs.

Image: Rear panel of the Gravity WZ3000.1D amplifier, showing the power input terminals (+12V, GND, REM) and speaker output terminals.

Image: The remote bass control knob, used for adjusting subwoofer output level from the driver's seat.
5.4. Final Connection
Once all wiring is securely connected and checked for shorts, insert the appropriate fuse (80A or 100A, depending on your system's power draw) into the inline AGU fuse holder near the battery. Reconnect the vehicle's negative battery terminal.
6. Operating Instructions
After installation, power on your head unit. The amplifier should turn on automatically (indicated by a power LED). Adjust the amplifier settings as follows:
- GAIN (Input Level): Start with the GAIN control at minimum. Play a familiar track with strong bass at about 75% of your head unit's maximum volume. Slowly increase the GAIN until you hear distortion, then back off slightly. This sets the ampLifier's input sensitivity kuti ienderane nemusoro wako wabuda.
- LPF (Low Pass Sefa): This control filters out high frequencies, allowing only low frequencies to pass to the subwoofer. Set the LPF between 40 Hz and 180 Hz. A common starting point is 80 Hz, but adjust to blend smoothly with your main speakers.
- SUBSONIC Filter: This filter removes extremely low frequencies below the audible range that can cause damage to the subwoofer. Set it between 0 Hz and 50 Hz. A setting around 25-30 Hz is often suitable for ported enclosures, while sealed enclosures may not require it as much.
- BASS BOOST FREQ: This selects the frequency at which the bass boost will be applied. Adjust this to enhance a specific bass frequency range.
- BASS KUSIMBISA: This control increases the output level at the selected bass boost frequency (0-12 dB). Use sparingly to avoid distortion and potential speaker damage.
- Remote Bass Control: This knob allows you to adjust the subwoofer's output level conveniently from your listening position without affecting other amplifier settings.
7. Kuchengeta
To ensure longevity and optimal performance of your car audio system:
- Gara uchitarisa zvese zvakabatana netambo kuti zvionekwe kuti hazvina kusimba here kana kuti hazvina ngura.
- Keep the amplifier and subwoofer free from dust and debris. Use a soft, dry cloth for cleaning.
- Iva nechokwadi chekuti ampMafin ekutonhodza eLifier haana kuvharwa kudzivirira kupisa zvakanyanya.
- Avoid exposing the subwoofer cone to direct sunlight for extended periods, as UV rays can degrade materials.
8. Kugadzirisa matambudziko
Kana ukasangana nematambudziko, tarisa kune anotevera akajairika matambudziko uye mhinduro:
| Dambudziko | Zvinogona Kukonzera | Solution |
|---|---|---|
| Hapana Simba / Amplifier haibatike | Fuse inoputika Simba risina simba kana kubatana kwepasi Hapana chiratidzo chekubatidza chiri kure | Check and replace fuse in fuse holder Iva nechokwadi chekuti kubatana kwese kwemagetsi nepasi kwakachengeteka Check remote wire connection to head unit and amplifier |
| Hapana Ruzha kubva kuSubwoofer | Tambo dzeRCA dzakabviswa kana kuti dzine dambudziko Waya dzesipika dzakabviswa kana kupfupiswa Ampkuwedzera kwe lifier kwakaderera zvakanyanya Vhoriyamu yeyuniti yemusoro yakaderera zvakanyanya | Tarisa RCA kubatana Verify speaker wire connections and check for shorts Gadzirisa amplifier gain Wedzera vhoriyamu yeyuniti yemusoro |
| Yakakanganiswa Inzwi | Gain set yakanyanya Damaged speaker or amplifier Incorrect LPF or Bass Boost settings | Deredza amplifier gain Inspect speaker and amplifier for damage Adjust LPF and Bass Boost settings |
| AmpLifier Kupisa | Kushaya mhepo yakakwana Mutoro we impedance usina kukodzera Gain set yakanyanya | Iva nechokwadi chekuyerera kwemhepo kwakaringana amplifier Simbisa maspeaker impedance match amplifier's stable load Deredza amplifier gain |
9. Zvinotsanangurwa
Gravity G3-12D4 Subwoofer
- Speaker Size: 12 Inches
- Voice Coil Configuration: Dual 4 Ohm
- Peak Power: 2000 Watts (each)
- RMS Power: 1000 Watts (each)
- Frequency Response: 30 - 500 Hz
- Sensitivity: 87 dB
Gravity WZ3000.1D Amplifier
- Max Power: 3000W @ 1 Ohm
- Kirasi: D
- Stable Impedance: 1 Ohm, 2 Ohm, 4 Ohm
- Signal-to-Noise Ratio (S/N): 70 dB
- Frequency Mhinduro: 8 Hz ~ 180 Hz
- Yese Harmonic Distortion (THD): 0.2%
- Bass Boost Level: 0 ~ 12 dB
- Low Pass Filter (LPF): 40 Hz ~ 180 Hz
- Subsonic Filter: 0 ~ 50 Hz
- Dimensions (L×W×H): 223.5mm (8.8 in) × 211mm (8.3 in) × 64.5 mm (2.5 in)
4 Gauge AmpLifier Installation Kit
- Power Cable: 17 ft. 4 Gauge
- Ground Cable: 3 ft. 4 Gauge
- Fuse Holder: Inline AGU with 80A + 100A Fuses
- RCA Cable: 17 ft. Double Shielded
- Turn-On Cable: 17 ft. 18 Gauge
- Speaker Wire: 20 ft. 16 Gauge
10. Warranty uye Tsigiro
Gravity products are designed for reliability and performance. For specific warranty terms and conditions, please refer to the warranty card included with your product or contact Gravity customer support. Keep your purchase receipt as proof of purchase for any warranty claims.
For technical support or inquiries, please visit the official Gravity websaiti kana kubata dhipatimendi ravo rebasa revatengi.