NVX XBBR2 X-Series 2-Channel Bass Restoration Processor User Manual

1. Introdución

The NVX XBBR2 is an advanced 2-channel bass restoration processor and line output converter designed to enhance the low-frequency response of your car audio system. It features parametric bass controls, impedance matching, and various turn-on modes, making it compatible with both factory and aftermarket head units. This manual provides detailed instructions for installation, operation, and troubleshooting to ensure optimal performance and longevity of your device.

Figure 1.1: NVX XBBR2 Bass Restoration Processor and Remote Level Control.

2. Información de seguridade

Please read all instructions carefully before installation and use. Failure to follow these guidelines may result in damage to the unit, your vehicle, or personal injury.

• Desconecte sempre o terminal negativo da batería do vehículo antes de comezar calquera traballo eléctrico.
• Ensure all wiring is properly routed and secured to prevent pinching or short circuits.
• Empregue cableado do calibre axeitado para as conexións de alimentación e terra, tal e como se especifica na sección de instalación.
• Non expoña a unidade á humidade nin a temperaturas extremas.
• Consulta cun instalador profesional de audio para automóbiles se tes algunha dúbida sobre algunha parte do proceso de instalación.

3. Contido do paquete

Verifica que todos os elementos estean presentes no paquete:

• NVX XBBR2 Bass Restoration Processor
• Wired Remote Bass Level Control
• Cable de control remoto (RJ11)
• Ferramentas de montaxe (parafusos)
• Desaparafusador pequeno
• Manual de usuario (este documento)

Figure 3.1: Wired Remote Bass Level Control and Cable.

Figure 3.2: Mounting Hardware and Screwdriver.

4. Características do produto

The NVX XBBR2 offers a range of features designed for superior audio processing:

• Active 2-channel Bass Restoration Processor with Parametric Bass Controls
• Preamp (RCA) and Speaker-level Inputs (Works with both Factory and Aftermarket Systems)
• Provides up to 9.5 Volts of output
• Auto turn-on via DC offset or Audio detection
• Load selection switch (20, 60, or 20K ohms) to prevent factory radio shut-down
• Control remoto de nivel de graves con cable incluído

Figure 4.1: High Output Voltage and Remote Bass Control.

Figure 4.2: Parametric Bass Controls for EQ Processing.

Figure 4.3: Auto Turn-On and Load Select Switches.

5. Controis e conexións

Familiarize yourself with the various controls and connection points on the XBBR2 unit.

Figure 5.1: Labeled Diagram of XBBR2 Inputs and Outputs.

5.1. Input Section

• High Level Input (L+, L-, R+, R-): Speaker-level inputs for connecting directly to a factory radio or amplifier's speaker outputs. These inputs can handle up to 225 Watts.
• Low Level Input (L, R): RCA inputs for connecting to an aftermarket head unit's preamp saídas.
• Load Select Switch (20KΩ, 60Ω, 20Ω): Adjusts the input impedance to prevent factory radios from shutting down due to sensing an incorrect load.

Figure 5.2: High and Low Level Input Terminals.

5.2. Output Section

• Output (L, R): RCA outputs to connect to your amplifier's input. Provides up to 9.5 Volts of output.
• Gain Knob (Min/Max): Adjusts the overall output level of the processed signal.
• LED de clip: Illuminates when the output signal is clipping, indicating distortion. Adjust the Gain knob down if this LED is consistently lit.
• Porto remoto: RJ11 port for connecting the wired remote bass level control.

Figure 5.3: RCA Output and Remote Port.

5.3. Power and Control Section

• +12 V: Main power input (connect to constant +12V from battery).
• GND: Ground connection (connect to vehicle chassis).
• REM IN: Remote turn-on input (connect to head unit's remote output or ignition).
• REM OUT: Remote turn-on output (provides a 12V signal to turn on an ampmáis vivo).
• Turn On Mode Switch (AUD, DC, REM): Selects how the unit turns on. AUD for audio signal detection, DC for DC offset detection on speaker-level inputs, REM for traditional remote wire turn-on.
• Ground Isolation Switch (200Ω, ISO, GND): Helps eliminate ground loop noise. 200Ω adds resistance, ISO isolates grounds, GND directly connects grounds.
• LED de enerxía: Illuminates when the unit is powered on.

Figure 5.4: Power, Ground Isolation, and Output Controls.

5.4. Bass Restoration Controls

• Wide Knob: Controls the width of the bass restoration frequency band. Adjusts how broad or narrow the restored bass frequencies are.
• Sweep Knob: Selects the center frequency of the bass restoration. Allows you to choose which specific low frequencies are enhanced.

Figura 5.5: Arriba View with Wide and Sweep Controls.

6. Configuración e instalación

Proper installation is crucial for the performance and safety of your XBBR2. It is recommended to have this unit installed by a qualified professional.

6.1. Lugar de montaxe

Choose a dry, well-ventilated location away from direct heat sources and moisture. Common locations include under a seat, in the trunk, or behind the dashboard. Ensure there is enough space for wiring and air circulation.

6.2. Conexións de cableado

1. Potencia (+12 V): Connect the +12V terminal to the vehicle's positive battery terminal using an appropriate gauge power wire (e.g., 14-18 gauge). Install an in-line fuse (not included) as close to the battery as possible.
2. Terra (GND): Connect the GND terminal to a clean, unpainted metal surface on the vehicle's chassis. Ensure a solid, low-resistance connection.
3. Entrada remota (REM IN): Connect the REM IN terminal to your head unit's remote turn-on output. If using speaker-level inputs and auto turn-on, this connection may not be necessary.
4. Remote Output (REM OUT): Connect the REM OUT terminal to the remote turn-on input of your amplificador(s).
5. Conexión de entrada:
   • For Factory Radios (Speaker Level): Connect the vehicle's speaker wires directly to the XBBR2's High Level Input terminals (L+, L-, R+, R-). Ensure correct polarity.
   • For Aftermarket Radios (Preamp Nivel): Connect RCA cables from your head unit's preamp outputs to the XBBR2's Low Level Input (L, R) RCAs.
6. Conexión de saída: Connect RCA cables from the XBBR2's Output (L, R) RCAs to your ampentrada do lifer.
7. Control remoto de graves: Plug the wired remote bass control cable into the Remote port on the XBBR2. Mount the remote control in an accessible location for easy adjustment.

6.3. Initial Switch Settings

• Cargar Seleccionar: Start with 20KΩ. If your factory radio shuts down or experiences issues, try 60Ω or 20Ω.
• Activa o modo: Seleccionar REM if using a dedicated remote wire. If using speaker-level inputs without a remote wire, try AUD (audio detection) or DC (DC offset detection).
• Illamento do solo: Start with ISO. If you experience ground noise (hissing, whining), try 200Ω or GND to find the quietest setting.

7. Instrucións de funcionamento

Once installed, the XBBR2 allows you to fine-tune your bass response.

1. Encender: Turn on your head unit. The XBBR2's Power LED should illuminate.
2. Establece a ganancia: With your head unit volume at about 75-80% of maximum, slowly increase the XBBR2's Gain knob until the Clip LED briefly flashes on the loudest bass notes. Then, back off the Gain slightly until the Clip LED rarely or never illuminates. This sets the maximum clean output.
3. Adjust Bass Restoration (Wide & Sweep): Play music with a good bass presence.
   • Sweep Knob: Rotate the Sweep knob to select the desired center frequency for bass enhancement. Experiment to find the frequency that best complements your music and speakers.
   • Wide Knob: Adjust the Wide knob to control the bandwidth of the bass restoration. A wider setting will affect a broader range of frequencies around the Sweep point, while a narrower setting will focus on a more specific frequency.
4. Control remoto de graves: Use the wired remote bass level control to adjust the overall bass output from the XBBR2 conveniently from your listening position. This control acts as a master volume for the bass restoration effect.

8. Mantemento

The NVX XBBR2 requires minimal maintenance to ensure long-term performance.

• Keep the unit clean and free of dust and debris. Use a soft, dry cloth for cleaning.
• Asegúrate de que todas as conexións estean ben fixadas. Comproba periodicamente o cableado para detectar calquera sinal de desgaste ou corrosión.
• Do not block the ventilation openings on the unit, if any, to prevent overheating.

9 Solución de problemas

If you encounter issues with your XBBR2, refer to the following common problems and solutions:

10. Especificacións

11. Garantía e soporte

NVX products are designed and manufactured to the highest quality standards. For warranty information, technical support, or service inquiries, please visit the official NVX websitio web ou póñase en contacto directamente co servizo de atención ao cliente. Garde o comprobante de compra para reclamacións de garantía.

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