1. Introducció
The NVX XDSP28 is an advanced 8-channel Digital Signal Processor (DSP) designed to enhance your car audio system. It features a 15-band parametric equalizer, adjustable high and low-pass filters, and various crossover types for precise sound customization. With 2 RCA inputs and 8 RCA outputs, built-in Bluetooth for audio streaming, and a remote level controller, the XDSP28 provides comprehensive control over your vehicle's sound environment. This manual provides detailed instructions for installation, operation, and troubleshooting to ensure optimal performance of your device.
2. Informació de seguretat
- Llegiu atentament totes les instruccions abans de la instal·lació i l'ús.
- Disconnect the vehicle's negative battery terminal before making any electrical connections.
- Assegureu-vos una correcta connexió a terra per evitar riscos elèctrics.
- No exposeu la unitat a la humitat ni a temperatures extremes.
- Mount the unit securely to prevent movement during vehicle operation.
- Consulteu un instal·lador professional d'àudio per a cotxes si no teniu clar quins passos d'instal·lació.
3. Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- NVX XDSP28 Digital Signal Processor Unit
- Remote Level Controller with Cable
- Manual d'usuari
- Maquinari de muntatge (cargols, etc.)
4. Producte acabatview
Familiarize yourself with the components and controls of the NVX XDSP28.
Figure 4.1: NVX XDSP28 Front Panel with Labeled Components
- Remote Out Sequencer: Activates other devices in sequence through a remote connection.
- Entrada remota (REM IN): Gira el amplifier on automatically with the radio or player.
- Ground Connector (GND): Connect to the battery's negative terminal.
- Positive Power Connector (+BAT): Connect to the battery's positive terminal.
- Pantalla LCD: Displays information and allows interaction with the processor.
- Main Control: A rotating knob to adjust processor system settings and navigate menus.
- Input LED Indicator: Shows when the channel's limiter is active or output is saturated.
- Remote Level Input: Connects the external remote level controller. Controls all eight outputs simultaneously.
- Audio Input (Inputs A, B): Independent RCA connectors for channels A and B.
- Audio Output (Outputs 1-8): RCA connectors for outputting processed audio.
- Indicador LED de sortida: Signals when the input signal is at maximum level.
- Output Select: Quickly press to adjust output channels or hold to mute.
Figura 4.2: superior view of the NVX XDSP28 unit, showing the main control knob, LCD display, and input/output connections.
Figura 4.3: posterior view of the NVX XDSP28, highlighting the power and remote connections.
Figure 4.4: The remote level controller for the NVX XDSP28, used for simultaneous output control.
5. Configuració i instal·lació
Una instal·lació correcta és crucial per a un rendiment òptim. Seguiu aquests passos amb atenció:
- Muntatge: Select a secure, dry location in your vehicle, away from heat sources and moisture. Use the provided mounting hardware to firmly attach the DSP unit.
- Connexions d'alimentació:
- Connecteu el + BAT terminal to the vehicle's positive battery terminal (or a constant 12V source) using appropriate gauge wire and an inline fuse (not included).
- Connecteu el GND terminal to a clean, unpainted metal surface on the vehicle chassis, ensuring a solid ground connection.
- Connecteu el REM IN terminal to the remote turn-on output of your head unit or ignition switch.
- Connexions d'entrada d'àudio: Connecteu les sortides RCA de la unitat principal a Inputs A i B on the XDSP28.
- Connexions de sortida d'àudio: Connecteu el Sortides 1-8 of the XDSP28 to the RCA inputs of your amplifiers. Ensure correct channel assignment for your speaker configuration.
- Remote Level Controller: Plug the remote level controller cable into the COMANDAMENT port on the DSP unit. Mount the controller in an accessible location for easy adjustment.
- Engegada inicial: Reconnect the vehicle's negative battery terminal. The DSP should power on, and the LCD display will illuminate.
6. Funcionament
The NVX XDSP28 offers extensive control over your audio system. All settings are adjusted via the Main Control knob and the LCD display.
6.1 Navegació de menús
- Gira el Control principal knob to scroll through menu options.
- Premeu el botó Control principal knob to select an option or confirm a setting.
- Manteniu premut el botó Control principal knob to exit a menu or return to the previous screen.
6.2 Equalització (EQ)
The XDSP28 features a 15-band parametric equalizer for precise frequency adjustments.
- Graphic EQ Presets: Select from 12 pre-defined graphic equalization presets such as Rock, Hip Hop, Pop, Vocal, and more.
- EQ paramètric: Manually adjust gain, frequency, and Q-factor for each of the 15 bands on both input and output channels.
6.3 Crossover Function
Configure high-pass and low-pass filters for each output channel to optimize speaker performance.
- Adjust cut frequencies for high-pass and low-pass filters.
- Select various crossover types and filter slopes (e.g., Butterworth, Linkwitz-Riley).
6.4 Time Alignment and Phase
Achieve perfect sound staging by adjusting the delay for each output channel.
- Adjust time delays in 0.02 ms increments.
- Set phase adjustments to 0° or 180° for each output.
6.5 Independent Gain and Limiter
- Independent Gain: Adjust the gain level for each output channel individually.
- Limitador: The integrated Limiter with Dynamic Attack-Release system protects your amplifiers and speakers from over-excursion and clipping.
6.6 Generador d'àudio
Utilize the built-in audio tone generator for precise tuning and system diagnostics.
- Generate frequency sweeps.
- Generate pink noise for RTA (Real-Time Analyzer) measurements.
6.7 Connectivitat Bluetooth
The XDSP28 features built-in Bluetooth for wireless audio streaming from your mobile device.
- Pair your device with the XDSP28 via Bluetooth settings on your phone.
- Bluetooth is for audio playback only; it does not support app-based control of DSP settings.
6.8 Remote Level Controller
The external remote level controller allows for convenient, simultaneous adjustment of all eight output levels.
7. Manteniment
- Keep the unit clean and free of dust. Use a soft, dry cloth for cleaning.
- Eviteu utilitzar productes químics aggressivs o netejadors abrasius.
- Assegureu-vos que totes les connexions estiguin ben fixades. Comproveu periòdicament el cablejat per detectar qualsevol signe de desgast o dany.
8. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| No power to the DSP. | Incorrect power wiring; Blown fuse; Loose ground connection. | Check +BAT, GND, and REM IN connections. Verify fuse integrity. Ensure a solid ground connection. |
| Sense sortida de so. | Incorrect input/output connections; DSP muted; Amplifier not powered on; Incorrect source selection. | Verify all RCA connections. Check DSP mute status (Output Select button). Ensure amplifiers are receiving remote turn-on signal. Confirm correct input source (A, B, or A+B). |
| So distorsionat o de mala qualitat. | Incorrect EQ settings; Improper crossover settings; Input signal too high/low; Limiter engaged excessively. | Adjust EQ settings. Review crossover frequencies and slopes. Check input gain levels. Monitor Input LED indicators for clipping. |
| Problemes de connexió Bluetooth. | Device not in pairing mode; Interference; Already connected to another device. | Ensure Bluetooth is enabled on your device and the DSP. Disconnect from other Bluetooth devices. Move closer to the DSP. |
| Main Control knob is overly sensitive. | Characteristic of the control mechanism. | Exercise caution and precision when rotating and pressing the knob for menu navigation and setting adjustments. |
| Remote Level Controller causes input glitches. | Potential unit-specific issue or interference. | Ensure the remote cable is securely connected and not damaged. If issues persist, try operating without the remote controller to isolate the problem. Contact support if necessary. |
9. Especificacions
| Característica | Especificació |
|---|---|
| Model | NVX XDSP28 |
| Nombre de canals | 8 (sortida) |
| Els canals d'entrada | 2 RCA |
| Canals de sortida | 8 RCA (up to 2 Volts output) |
| Equalitzador | EQ paramètric de 15 bandes |
| Ràtio senyal / soroll | > 94 dB |
| Distorsió harmònica total (THD) | 0.01% |
| Time Adjustment Increments | 0.02 ms |
| Ajust de fase | 0° o 180° |
| Graphic EQ Presets | 12 (Rock, Hip Hop, Pop, Vocal, etc.) |
| Subministrament mínim Voltage | 10 volts (CC) |
| Volum de subministrament màximtage | 16 volts (CC) |
| Dimensions (L x A x A) | 7.87" x 3.98" x 1.46" (200 mm x 101 mm x 37 mm) |
| Pes de l'article | 0.7 quilos |
| Bluetooth | Built-in (for audio streaming) |
| Remote Level Controller | Included, for simultaneous output control |
10. Garantia i Suport
NVX products are designed for reliability and performance. For specific warranty details, please refer to the warranty card included with your product or contact the retailer where the product was purchased. Keep your proof of purchase for warranty claims.
For technical assistance, troubleshooting beyond this manual, or service inquiries, please contact NVX customer support or the authorized dealer. Contact information can typically be found on the manufacturer's official weblloc web o a través del vostre distribuïdor.