1. परिचय
The Gravity 4000.1D is a high-performance Class D monoblock amplifier designed for automotive audio systems. This amplifier delivers 4000 Watts maximum power and is stable at 1 Ohm, 2 Ohm, and 4 Ohm loads, making it suitable for driving subwoofers. It features a digital design with a MOSFET power supply for efficient operation. This manual provides essential information for proper installation, operation, and maintenance of your ampलाइफायर
2. सुरक्षितता खबरदारी
- कोणतीही स्थापना सुरू करण्यापूर्वी वाहनाचे बॅटरी निगेटिव्ह टर्मिनल नेहमी डिस्कनेक्ट करा.
- नुकसान किंवा शॉर्ट सर्किट टाळण्यासाठी सर्व वायरिंग योग्यरित्या रूट केलेले आणि सुरक्षित असल्याची खात्री करा.
- इंस्टॉलेशन विभागात नमूद केल्याप्रमाणे योग्य गेज पॉवर आणि ग्राउंड वायर वापरा.
- स्थापित करा ampओव्हरहाटिंग टाळण्यासाठी हवेशीर भागात लिफायर.
- माउंट करणे टाळा amplifier in locations exposed to direct sunlight or excessive moisture.
- जर तुम्हाला कोणत्याही इंस्टॉलेशन पायऱ्यांबद्दल खात्री नसेल तर व्यावसायिक कार ऑडिओ इंस्टॉलरचा सल्ला घ्या.
3. पॅकेज सामग्री
पॅकेजमध्ये सर्व वस्तू आहेत का ते तपासा:
- Gravity 4000.1D Class D Car Ampअधिक जिवंत
- Remote Bass Knob with Cable
- माउंटिंग हार्डवेअर (स्क्रू)
- वापरकर्ता मॅन्युअल (हा दस्तऐवज)
- SoundXtreme AP6 Bass Machine (Bundle Component)
4. उत्पादन संपलेview
सह स्वतःला परिचित करा amplifier's layout and connections.

आकृती 1: शीर्ष view of the Gravity 4000.1D Class D Car Amplifier, showing the 'GRAVITY' logo and 'WARZONE' branding, along with the model number 'WZ 4000-1D'.
4.1 Input and Control Panel

आकृती 2: क्लोज-अप view च्या amplifier's input and control panel. This side features RCA input jacks, a remote bass knob port, and various adjustment controls.
- एलईडी संरक्षित करा: प्रकाशित होते तेव्हा ampलाइफायर संरक्षण मोडमध्ये आहे.
- रिमोट करा: Port for connecting the wired remote bass knob.
- इनपुट (RCA): Audio signal input from your head unit or source.
- BRIDGE IN: Used for bridging multiple amplifiers (refer to advanced setup).
- लाभ: ची इनपुट संवेदनशीलता समायोजित करते ampलाइफायर
- LPF (लो पास फिल्टर): Adjusts the low-pass crossover frequency (40 Hz ~ 180 Hz).
- सबसोनिक: Adjusts the subsonic filter frequency (0 Hz ~ 50 Hz).
- BASS BOOST FREQ: Selects the center frequency for bass boost (30 Hz, 40 Hz, 60 Hz).
- बेस बूस्ट: Adjusts the level of bass boost (0 dB ~ 12 dB).
- पॉवर एलईडी: प्रकाशित होते तेव्हा ampलाइफायर चालू आहे.
4.2 Power and Speaker Terminal Panel

आकृती 3: क्लोज-अप view च्या amplifier's power and speaker terminal panel. This side includes connections for power, ground, remote turn-on, and speaker outputs.
- वक्ता: Output terminals for connecting your subwoofer(s).
- POWER (+12V): Connects to the positive terminal of the vehicle's battery.
- REM (रिमोट): Connects to the remote turn-on output of your head unit.
- GND (ग्राउंड): Connects to a solid chassis ground point in the vehicle.
5. स्थापना
३.१ माउंट करणे Ampअधिक जिवंत
Choose a mounting location that is dry, well-ventilated, and secure. Ensure there is sufficient airflow around the amplifier to prevent overheating. The amplifier can be mounted horizontally or vertically. Use the provided mounting screws to secure the amplifier to a solid surface in your vehicle.
5.2 वायरिंग कनेक्शन
Proper wiring is crucial for optimal performance and safety. Refer to Figure 3 for terminal locations.
- पॉवर कनेक्शन (+12V): Run a heavy-gauge power cable (e.g., 4-gauge or larger) directly from the vehicle's positive battery terminal to the amplifier's +12V terminal. Install an in-line fuse holder with an appropriate fuse (not included) within 18 inches (45 cm) of the battery.
- ग्राउंड कनेक्शन (GND): Run a heavy-gauge ground cable (same gauge as power cable) from the amplifier's GND terminal to a clean, unpainted metal surface on the vehicle's chassis. Ensure a good electrical connection by scraping away any paint or rust. The ground cable should be as short as possible, ideally less than 3 feet (1 meter).
- रिमोट टर्न-ऑन कनेक्शन (REM): Connect a smaller gauge wire (e.g., 18-gauge) from the amplifier's REM terminal to the remote turn-on output of your head unit. This wire tells the amplifier to turn on when your head unit is active.
- आरसीए इनपुट कनेक्शन: Connect RCA cables from the pre-out outputs of your head unit to the INPUT RCA jacks on the ampलाइफायर
- स्पीकर कनेक्शन: Connect your subwoofer(s) to the SPEAKER output terminals. Ensure correct polarity (+ to + and - to -). The amplifier is stable down to 1 Ohm. Consult your subwoofer's specifications for proper wiring configurations to achieve the desired impedance.
- रिमोट बास नॉब: Plug the remote bass knob cable into the REMOTE port on the amplifier and mount the knob in a convenient location for adjustment.
6. ऑपरेशन
५.१ प्रारंभिक पॉवर-अप
After all connections are made and verified, reconnect the vehicle's battery. Turn on your head unit. The POWER LED on the amplifier should illuminate. If the PROTECT LED illuminates, refer to the Troubleshooting section.
6.2 समायोजित करणे Ampलाइफायर सेटिंग्ज
Adjust these settings carefully to optimize sound quality and prevent damage to your speakers.
- लाभ: Start with the GAIN control at minimum. Play a familiar piece of music at a moderate volume on your head unit. Slowly increase the GAIN until you hear distortion, then back off slightly. This sets the amplifier's input sensitivity to match your head unit's output.
- LPF (लो पास फिल्टर): Adjust the LPF to filter out frequencies above your desired subwoofer range. A common starting point is 80-100 Hz. This ensures only low frequencies are sent to your subwoofer.
- SUBSONIC Filter: This filter removes extremely low frequencies that your subwoofer cannot reproduce efficiently, preventing damage and improving sound quality. Set it slightly below your subwoofer's port tuning frequency or around 25-30 Hz for sealed enclosures.
- BASS BOOST FREQ & BASS BOOST: Use these controls to enhance bass output at a specific frequency. Start with Bass Boost at 0 dB and adjust only if needed. Excessive bass boost can cause distortion and damage.
6.3 Remote Bass Knob

Figure 4: The wired remote bass knob, used for convenient adjustment of bass level from the driver's seat.
The remote bass knob allows you to adjust the subwoofer output level conveniently from your listening position. This control typically acts as a master volume for the subwoofer channel, allowing you to fine-tune bass levels without accessing the ampथेट लिफायर.
7. तपशील
| वैशिष्ट्य | तपशील |
|---|---|
| मॉडेल | 4000.1D |
| आउटपुट पॉवर | 4000 वॅट्स कमाल |
| वर्ग | वर्ग डी |
| स्थिरता | 1 Ohm, 2 Ohm, 4 Ohm Stable |
| S/N गुणोत्तर | > 70 dB |
| वारंवारता प्रतिसाद | एक्सएनयूएमएक्स हर्ट्ज ~ एक्सएनयूएमएक्स हर्ट्ज |
| THD | < 0.2% |
| बास बूस्ट लेव्हल | 0 ~ 12 डीबी |
| LPF (लो पास फिल्टर) | एक्सएनयूएमएक्स हर्ट्ज ~ एक्सएनयूएमएक्स हर्ट्ज |
| सबसॉनिक फिल्टर | 0 ~ 50 Hz |
| इनपुट्स | High and Low Level Inputs |
| परिमाण (L×W×H) | ५२५ मिमी (२०.७ इंच) × ३८० मिमी (१५.० इंच) × ४८० मिमी (१८.९ इंच) |
| चॅनेलची संख्या | १ (मोनोब्लॉक) |
| माउंटिंग प्रकार | मुक्त स्थायी |
8. समस्या निवारण
जर तुम्हाला तुमच्या amplifier, consult the following table:
| समस्या | संभाव्य कारण | उपाय |
|---|---|---|
| Amplifier does not turn on (POWER LED off) | No power, no ground, or no remote signal. Blown fuse. | Check +12V, GND, and REM connections. Verify in-line fuse. |
| PROTECT LED illuminates | Short circuit in speaker wiring, impedance too low, overheating, or DC offset. | Check speaker wiring for shorts. Verify speaker impedance. Ensure proper ventilation. Allow ampथंड करण्यासाठी लिफायर. |
| आवाज आउटपुट नाही | No input signal, incorrect gain setting, or speaker wiring issue. | Check RCA input connections. Adjust GAIN. Verify speaker connections and polarity. |
| विकृत आवाज | GAIN set too high, improper crossover settings, or damaged speakers. | Reduce GAIN. Adjust LPF and Subsonic filters. Inspect speakers for damage. |
| Engine noise/whine | Poor grounding, RCA cable routing, or power cable interference. | Ensure solid ground connection. Route RCA cables away from power cables. Consider a ground loop isolator. |
9. देखभाल
To ensure the longevity and optimal performance of your Gravity 4000.1D ampजीवनदायी:
- ठेवा amplifier clean and free of dust. Use a soft, dry cloth for cleaning.
- Ensure that the cooling fins are not obstructed to allow for proper heat dissipation.
- सर्व वायरिंग कनेक्शन घट्टपणा आणि गंज यासाठी वेळोवेळी तपासा.
- वर द्रव सांडणे टाळा ampलाइफायर
10. SoundXtreme AP6 Bass Machine (Bundle Component)
The Gravity 4000.1D amplifier may be bundled with a SoundXtreme AP6 Bass Machine. This component is designed to enhance bass response and provide additional control over low frequencies in your audio system.

Figure 5: The SoundXtreme AP6 Bass Machine, a high-performance bass processor included in some bundles.
For detailed installation and operation instructions for the SoundXtreme AP6 Bass Machine, please refer to its dedicated user manual, as its functionality is separate from the Gravity 4000.1D ampलाइफायर
11. हमी आणि समर्थन
For warranty information and technical support, please refer to the documentation provided with your purchase or contact Gravity customer service. Keep your proof of purchase for warranty claims.