1. Einleitung
This manual provides detailed instructions for the installation, operation, and maintenance of your ISUDAR SU6901 Slim Active Car Subwoofer. Please read this manual thoroughly before using the product to ensure proper function and safety.

The ISUDAR SU6901 slim active car subwoofer, showcasing its compact design and included wired remote control for bass level adjustment.
The ISUDAR SU6901 is a compact, active car subwoofer designed to deliver powerful bass in a space-saving form factor. It features a built-in amplifier and offers flexible connectivity options for various car audio systems.
2. Packungsinhalt
Überprüfen Sie, ob alle Artikel im Paket vorhanden sind:
- ISUDAR SU6901 Slim Active Car Subwoofer
- Kabelgebundene Fernbedienung
- Stromkabelbaum
- High-Level Input Wiring Harness
- Montagehalterungen (4x)
- Befestigungsschrauben
- Benutzerhandbuch (dieses Dokument)

The ISUDAR SU6901 subwoofer is shown alongside its complete set of accessories, including wiring harnesses, mounting brackets, screws, and the wired remote control.
3. Einrichtung und Installation
The ISUDAR SU6901 is designed for easy installation, often fitting under car seats due to its slim profile. Ensure the vehicle's battery is disconnected before beginning installation.
3.1 Auswählen eines Installationsorts
The compact dimensions of the subwoofer allow for flexible placement. Common locations include:
- Unter einem Autositz (Fahrer- oder Beifahrerseite)
- Im Kofferraum
- Behind a rear seat
Choose a location that provides adequate ventilation and is protected from direct sunlight or excessive heat. Ensure the subwoofer is securely mounted to prevent movement during vehicle operation.

Demonstration of the ISUDAR SU6901 subwoofer's compact size, allowing for discreet installation under a car seat to save space.
3.2 Kabelverbindungen
The SU6901 supports both RCA (low-level) and high-level (speaker) inputs, allowing compatibility with both aftermarket and factory stereo systems.
- Stromanschluss: Connect the main power wire (+12V) to the vehicle's battery (positive terminal) via an appropriate fuse (15A/20A recommended). Connect the ground wire (GND) to a clean, unpainted metal surface on the vehicle chassis.
- Ferneinschaltung (REM): Connect the remote turn-on wire to the remote output of your head unit. If your head unit does not have a remote output, the subwoofer features an "Auto Power On" function that detects audio signal.
- Audioeingang:
- Cinch-Eingang: Schließen Sie RCA-Kabel vom Subwoofer oder Vorverstärker Ihres Autoradios an.amp outputs to the "LOW LEVEL INPUT" jacks on the subwoofer.
- High-Level-Eingang: If your head unit does not have RCA outputs, use the provided high-level input harness. Connect the speaker wires from your head unit's speaker outputs to the corresponding inputs on the high-level harness, then plug the harness into the "HIGH LEVEL INPUT" port on the subwoofer.
- Fernbedienung: Plug the wired remote control into the "REMOTE CONTROL" port for convenient bass level adjustment.

An annotated diagram illustrating the various input and output connections on the subwoofer's control panel, including power, remote control, high-level input, low-level RCA input, phase, low pass filter, bass boost, and input gain.
4. Bedienungsanleitung
Once installed, you can adjust the subwoofer's settings to optimize its performance with your vehicle's audio system.
4.1 Einstellungen am Bedienfeld
The control panel on the subwoofer allows for fine-tuning of the audio output:
- Eingangsverstärkung: Adjusts the input sensitivity to match the output level of your head unit. Start low and gradually increase until desired volume is achieved without distortion.
- Tiefpassfilter (LPF): This variable filter allows you to set the upper frequency limit for the subwoofer, typically between 50Hz and 150Hz. This ensures the subwoofer only reproduces bass frequencies, preventing it from playing mid-range sounds.
- Bassverstärkung: Provides an adjustable bass enhancement, typically from 0 to +18dB, to increase the intensity of low frequencies. Use sparingly to avoid distortion.
- Phasensteuerung: A switch (0°/180°) to adjust the phase of the subwoofer's output relative to the main speakers. Adjust this to achieve the most cohesive bass response.
- Automatisches Einschalten: If using high-level inputs and no remote turn-on wire, set this switch to "ON" for automatic power detection.

This image highlights the high-strength protective alloy mesh, the frosted aluminum alloy body for vibration reduction, and the tunable low frequency pass, bass boost, and input gain controls.
4.2-Fernbedienung
The included wired remote control allows for convenient adjustment of the bass level from the driver's seat without needing to access the subwoofer directly.
5. Wartung
The ISUDAR SU6901 subwoofer requires minimal maintenance to ensure long-lasting performance.
- Keep the subwoofer clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Sorgen Sie für eine ausreichende Belüftung rund um das Gerät, um eine Überhitzung zu vermeiden.
- Überprüfen Sie regelmäßig alle Kabelverbindungen auf festen Sitz und Korrosion.
- Setzen Sie den Subwoofer keinen extremen Temperaturen oder Feuchtigkeit aus.
6. Fehlerbehebung
If you experience issues with your ISUDAR SU6901 subwoofer, refer to the following common problems and solutions:
| Problem | Mögliche Ursache | Lösung |
|---|---|---|
| Kein Ton vom Subwoofer |
|
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| Verzerrter Ton |
|
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| Der Subwoofer schaltet sich zeitweise aus. |
|
|
If the problem persists after trying these solutions, please contact ISUDAR customer support.
7. Spezifikationen
Detailed technical specifications for the ISUDAR SU6901 Slim Active Car Subwoofer:

A diagram showing the physical dimensions and a table of key specifications including model, type, speaker size, max power, bass boost, fuse, frequency range, and net weight.
| Besonderheit | Spezifikation |
|---|---|
| Modellname | SU6901 |
| Typ | Active Base Subwoofer |
| Lautsprechergröße | 6 x 9 Zoll |
| Maximale Leistungsabgabe | 600 Watt (Spitzenleistung) |
| RMS-Ausgangsleistung | 150 Watt |
| Frequenzgang | 50Hz - 150Hz |
| Bass Boost | 0 - +18dB |
| Sicherung | 15 A / 20 A |
| Konnektivitätstechnologie | RCA, Hochpegeleingang |
| Audioausgabemodus | Bass |
| Eingangslautstärketage | 12 Volt Gleichstrom |
| Montagetyp | Under-seat / Floor |
| Material | Aluminium |
| Abmessungen (L x B x H) | 28.96 x 22.1 x 7.37 cm (11.4 x 8.7 x 3.0 Zoll) |
| Nettogewicht | 4 kg |
| Produktmodellnummer | AM50SU06901 |
8. Garantie und Support
For warranty information and technical support, please refer to the warranty card included with your product or visit the official ISUDAR webBewahren Sie Ihren Kaufbeleg als Kaufnachweis auf.
For further assistance, you may contact ISUDAR customer service through their official channels.