1. Isingeniso
Thank you for choosing the NVX VAD8402v2 2-Channel Class D Ampi-lifier. Lokhu amplifier is designed to deliver high-quality audio performance for car, marine, and powersports applications. Featuring a compact design, robust power output, and marine-grade construction, the VAD8402v2 ensures reliable operation in various environments. Please read this manual thoroughly before installation and operation to ensure proper use and maximum performance.
2. Ulwazi Lokuphepha
Izinyathelo Zokuphepha Ezibalulekile:
- Njalo nqamula itheminali yebhethri yemoto ngaphambi kokuqala noma yimuphi umsebenzi kagesi.
- Qinisekisa ukusekelwa okufanele kwe- ampi-lifier eya ku-chassis yemoto.
- Sebenzisa izintambo ezifanele zokulinganisa ukuxhumanisa amandla, umhlabathi, kanye nesipikha njengoba kuchaziwe kule ncwadi.
- Gwema ukufaka i- ampi-lififier ezindaweni ezivezwe elangeni eliqondile, ukushisa okukhulu, umswakama, noma uthuli.
- Faka ngokuphephile i- ampi-lifier ukuvimbela ukunyakaza ngesikhathi sokusebenza kwemoto.
- Ungayisebenzisi i- amplifier if it is damaged or malfunctioning. Refer servicing to qualified personnel.
- Maintain a safe listening volume to prevent hearing damage.
3. Okuqukethwe Kwephakheji
Qinisekisa ukuthi zonke izinto zikhona kuphakheji:
- I-NVX VAD8402v2 Isigaba D Seziteshi Ezimbili Ampokokuphila
- Remote Bass Knob with Cable
- I-Hardware yokukhweza
- Incwadi Yomsebenzisi (le dokhumenti)

Image 1: NVX VAD8402v2 Amplifier with included remote bass knob.

Image 2: Close-up of the remote bass knob and its connecting cable.
4. Izici zomkhiqizo
- Peak Power Performance: 1680 Watts peak power for enhanced audio output.
- Robust RMS Power: Consistent sound with 300W x 2 chan. at 4 ohms, 420W x 2 chan. at 2 ohms, and 840W x 1 chan. bridged at 4 ohms.
- Ukwenza ngokwezifiso Umsindo: Variable high-pass and low-pass filters (40 - 500 Hz) and variable bass boost for precise sound tuning.
- Marine Certified Construction: Conformally coated, marine-grade circuit board for durability in harsh environments.
- Idizayini Eqinile: Features LED indicator lighting, 3-way protection circuitry, heavy-duty aluminum alloy heat sink, platinum-plated RCA level inputs, and screw terminals.
- Usayizi Ohlangene: Dimensions of 9.2"L x 7.2"W x 2.0"H for flexible installation.
5. Ukusetha nokufakwa
Ukufakwa okufanele kubalulekile ukuze kusebenze kahle futhi kuphephe. Uma ungaqiniseki nganoma yiziphi izinyathelo, xhumana nomfaki ochwepheshe.
5.1 Indawo Yokubeka
- Choose a location that provides adequate ventilation for the ampokokuphila.
- Ensure the mounting surface is solid and secure.
- Avoid areas prone to excessive vibration, heat, moisture, or dust.
- Allow sufficient space around the amplifier for wiring connections and adjustments.
5.2 Ukuxhunywa kwezintambo
Refer to the diagrams below for proper wiring.

Isithombe 3: Phezulu view kwe amplifier showing input and control panel.

Isithombe 4: Phansi view kwe amplifier showing power, ground, remote, and speaker terminals.
- Ukuxhuma Amandla (+12V): Connect a fused power cable (minimum 8 AWG recommended) directly from the positive terminal of the vehicle's battery to the +12V terminal on the amplifier. Install the fuse holder within 18 inches (45 cm) of the battery.
- I-Ground Connection (GND): Connect a ground cable (minimum 8 AWG recommended) from the GND terminal on the amplifier to a clean, unpainted metal surface of the vehicle chassis. Ensure a solid electrical connection.
- Ukuvula Okukude (i-REM): Xhuma ucingo olusebenzisa i-remote turn-on oluvela ku-remote output yeyunithi yakho yekhanda uye ku-REM terminal ku- ampi-lififier. Lolu cingo lukhombisa ukuthi ampi-lifier ukuze uvule futhi uvale ngesistimu yakho yomsindo.
- Okokufaka kwe-RCA: Connect RCA cables from your head unit's pre-out to the INPUT L and R RCA jacks on the ampokokuphila.
- Okukhiphayo kwesipika: Connect your speakers to the SPK OUT terminals. Ensure correct polarity (+ to + and - to -). For bridged operation, refer to the specific bridging instructions in the full manual (not provided here, but implied).
6. Iziqondiso Zokusebenza
The VAD8402v2 amplifier features several controls to fine-tune your audio system.

Isithombe 5: Okuningiliziwe view kwe ampiphaneli yokulawula ye-lifier.
6.1 Thola Ukulawula
The GAIN control matches the amplifier's input sensitivity to the output of your head unit. Start with the gain at minimum and slowly increase it until you hear distortion, then back off slightly. Do not use the gain control as a volume knob.
6.2 Crossover (X-OVER)
The X-OVER switch allows you to select the type of filter:
- I-HPF (Isihlungi Se-High Pass): Allows frequencies above the set point to pass through. Useful for full-range speakers to prevent low bass distortion.
- I-LPF (Isihlungi Se-Low Pass): Allows frequencies below the set point to pass through. Typically used for subwoofers.
- OKUGCWELE: Disables the crossover, allowing all frequencies to pass.
Adjust the HPF and LPF frequency knobs (40 - 500 Hz) according to your speaker specifications and desired sound.
6.3 I-Bass Boost
The BASS BOOST control allows you to increase the bass output at a specific frequency. Use this feature sparingly to avoid distortion and potential speaker damage.
6.4 Remote Bass Knob
Connect the remote bass knob to the "REMOTE" port on the amplifier. This allows for convenient adjustment of the bass level from your listening position.
7. Isondlo
- Gcina i- ampi-lififier ihlanzekile futhi ayinalo uthuli. Sebenzisa indwangu ethambile neyomile ukuze uyihlanze.
- Ensure all wiring connections remain secure. Periodically check for loose connections.
- Ungavimbeli i- amplifier's cooling fins or ventilation areas.
- Uma i amplifier becomes excessively hot, check for proper ventilation and speaker impedance.
8. Ukuxazulula izinkinga
| Inkinga | Imbangela Engenzeka | Isixazululo |
|---|---|---|
| Awekho Amandla/ Ampi-lififier ayivuli | Blown fuse, loose power/ground/remote wire, faulty remote turn-on signal. | Check fuse, verify all power connections, test remote wire for +12V when head unit is on. |
| Akukho okukhipha umsindo | Loose RCA cables, incorrect gain setting, speaker wires disconnected, ampI-lifier kumodi yokuvikela. | Check RCA connections, adjust gain, verify speaker wiring, check protection indicator. |
| Umsindo Ohlanekezelwe | Gain set too high, improper crossover settings, faulty speakers, low input voltage. | Reduce gain, adjust crossover, check speaker condition, ensure stable power supply. |
| Ampi-lififier Ukushisa Okudlulele | Insufficient ventilation, low speaker impedance, prolonged high-volume operation. | Improve ventilation, verify speaker impedance (should be 2-4 ohms per channel), reduce volume. |
9. Imininingwane
| Isici | Imininingwane |
|---|---|
| Inombolo Yemodeli | I-VAD8402v2 |
| Iziteshi | 2-Ishaneli |
| AmpLifier Ikilasi | Ikilasi D |
| Amandla Aphakeme | 1680 Watts |
| Amandla e-RMS (4 Ohms) | Iziteshi ezingama-300W x 2 |
| Amandla e-RMS (2 Ohms) | Iziteshi ezingama-420W x 2 |
| RMS Power (Bridged 4 Ohms) | 840W x 1 channel |
| Voltage | Ama-volt angu-12 (Okujwayelekile) |
| Isihlungi se-High Pass (HPF) | 40 - 500 Hz |
| Isihlungi se-Low Pass (LPF) | 40 - 500 Hz |
| Ubukhulu (L x W x H) | 9.2" x 7.2" x 2.0" (23.37 x 18.29 x 5.08 cm approx.) |
| Isisindo | 2.56 kg (cishe.) |
| Isitifiketi | I-Marine Certified |
10. Iwaranti kanye Nokusekela
NVX products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please visit the official NVX webisayithi noma uthinte umdayisi wakho ogunyaziwe. Gcina irisidi lakho lokuthenga njengobufakazi bokuthenga.