Introdución
The Infinity INFDSP4425 is a versatile 4-channel digital signal processor (DSP) with an integrated amplifier, designed to enhance your vehicle's audio system. It provides four finely-tuned and powered outputs, along with a dedicated subwoofer output. This unit accepts both RCA and speaker-level inputs, allowing for integration into various audio setups, including factory systems. The balanced differential inputs ensure optimal sound quality and noise rejection. This manual provides essential information for the proper installation, operation, and maintenance of your INFDSP4425.
Información de seguridade
Please read all instructions carefully before installing or operating the INFDSP4425. Failure to follow these guidelines may result in injury, damage to the unit, or damage to your vehicle.
- Desconecte sempre o terminal negativo da batería do vehículo antes de comezar calquera traballo eléctrico.
- Ensure proper grounding for all components to prevent electrical hazards.
- Use appropriate wire gauges for power and speaker connections as specified in the installation guide.
- Mount the unit securely in a location that does not obstruct vehicle operation or safety features.
- Avoid mounting the unit in areas exposed to excessive heat, moisture, or direct sunlight.
- Consulte cun profesional cualificado se ten dúbidas sobre algún paso de instalación.
- Este produto contén produtos químicos que o Estado de California sabe que causan cancro e defectos de nacemento ou outros danos reprodutivos.
O que hai na caixa
Verifique que estean presentes todos os compoñentes antes de continuar coa instalación:
- 1x Infinity INFDSP4425 Digital Signal Processor/Ampmáis vivo
- Wiring Harnesses (Power/Speaker Input, RCA Output)
- Hardware de montaxe
- Manual de usuario (este documento)
Configuración
Instalación física
Choose a mounting location that is dry, well-ventilated, and secure. Ensure there is sufficient space for wiring connections and heat dissipation. The unit can be mounted in various positions, such as under a seat, in the trunk, or behind a dashboard panel. Use the provided mounting hardware to secure the unit firmly to a solid surface.

Figura 1: En ángulo view of the Infinity INFDSP4425, illustrating its compact design and integrated mounting tabs for secure installation.
Conexións de cableado
The INFDSP4425 features clearly labeled wire connections for straightforward installation.
- Power (PWR): Connect the main power wire to the vehicle's positive battery terminal, ensuring an inline fuse is installed close to the battery.
- Terra (GND): Connect the ground wire to a clean, unpainted metal surface on the vehicle chassis.
- Remoto (REM): Connect the remote turn-on wire to your head unit's remote output. Alternatively, the unit supports DC offset or audio signal sensing for automatic turn-on.
- Entrada: The DSP accepts both RCA (low-level) and speaker-level (high-level) inputs. Connect your audio source to the appropriate input terminals.
- Saída: Connect the speaker outputs to your vehicle's speakers and the subwoofer pre-out to an external subwoofer ampmáis vivo.

Figura 2: The Infinity INFDSP4425 with its various wiring harnesses connected, including RCA outputs (white and red connectors) and the multi-colored speaker-level input harness. This view highlights the comprehensive connectivity options.

Figura 3: Un detallado view of the INFDSP4425's control panel, showing the remote port, turn-on mode switch (REM, DC, AUDIO), input level switch (LOW, HI), PC connection port, and the output/input wiring terminals.
Configuración inicial
After physical installation, the INFDSP4425 requires configuration using its dedicated DSP software. This software allows for precise tuning of equalization, crossovers, time alignment, and other audio parameters. Connect the unit to a computer via the USB port (labeled PC) and download the software from the official Harman websitio.
Instrucións de funcionamento
The primary operation of the INFDSP4425 involves using the DSP software to customize your audio settings.
- DSP Software: Launch the DSP software on your connected computer. The interface provides controls for:
- Igualación: Adjust the 31-band equalizer for each channel to fine-tune the frequency response.
- Crossovers: Set high-pass, low-pass, and band-pass filters for each speaker to direct appropriate frequencies.
- Aliñación horaria: Adjust the delay for each speaker to ensure sound arrives at the listening position simultaneously.
- Control de Ganancia: Independently adjust the output level for each channel.
- Control de fase: Adjust the phase of individual channels to correct acoustic issues.
- Interruptor de nivel de entrada: Set the "INPUT LEVEL" switch on the unit to "LOW" for RCA inputs or "HI" for speaker-level inputs.
- Modo de activación: Select the desired turn-on mode using the "TURN-ON MODE" switch:
- REM: Uses a traditional remote turn-on wire from the head unit.
- DC: Detects a DC offset on the speaker-level inputs to turn on.
- AUDIO: Detects an audio signal on the speaker-level inputs to turn on.
Mantemento
The Infinity INFDSP4425 requires minimal maintenance.
- Limpeza: Periodically wipe the unit with a soft, dry cloth to remove dust. Do not use harsh chemicals or abrasive cleaners.
- Ventilación: Ensure that the mounting location allows for adequate airflow around the unit to prevent overheating.
- Conexións: Comprobe periodicamente todas as conexións do cableado para asegurarse de que estean seguras e libres de corrosión.
Resolución de problemas
If you experience issues with your INFDSP4425, refer to the following common problems and solutions:
| Problema | Causa posible | Solución |
|---|---|---|
| No power indicator (PWR LED off) |
|
|
| Sen saída de audio |
|
|
| Son distorsionado |
|
|
| DSP software freezes or does not connect |
|
|
Especificacións
| Nome do modelo | INFDSP4425 |
| Potencia de saída | 4 x 25 W RMS |
| Vol. De entradatage | 12V (16 Volts Max) |
| Sorteo actual | 15A |
| Configuración da canle de son envolvente | 4.0 |
| Tecnoloxía de conectividade | USB (for DSP software) |
| Dimensións do produto (P x A x A) | 3.35" x 15.16" x 7.2" |
| Peso do elemento | 3.39 libras |
| Material | Metals, Plastics |
| Método de control | Remote (via DSP software) |
| Usos recomendados | Sistemas de audio para automóbiles |
Información da garantía
The Infinity INFDSP4425 comes with a limited warranty. For specific terms, conditions, and duration of the warranty, please refer to the warranty card included with your product or visit the official Infinity websitio. Garda o comprobante de compra para reclamacións de garantía.
Apoio
For technical assistance, software downloads, or further inquiries regarding your Infinity INFDSP4425, please visit the official Harman website or contact Infinity customer support.
- Oficial Websitio: www.harman.com (Harman is the parent company of Infinity)
- Atención ao cliente: Consulte a información de contacto proporcionada na páxina oficial websitio para a súa rexión.





