1. Introduktion og overview
The HERTZ DBA 201F is an 8-inch (200mm) super-flat active under-seat subwoofer system designed to enhance the bass response in your vehicle's audio system. This compact unit features an internal Class D amplifier, providing powerful low-frequency output while maintaining a slim profile for flexible installation options.
Nøglefunktioner:
- High performance in a super-flat design.
- Internal 440-watt peak Class D amplivligere.
- Compatible with various car audio systems.
- Plug & Play connection for simplified installation.
- Comprehensive set of controls for fine-tuning in-car audio performance.

Figur 1: Forside view of the HERTZ DBA 201F active under-seat subwoofer.
2. Sikkerhedsoplysninger
Please read all safety instructions carefully before installing and operating the DBA 201F subwoofer. Failure to follow these guidelines may result in injury, damage to the product, or damage to your vehicle.
- Elektriske forbindelser: Ensure all power connections are made correctly and securely. Disconnect the vehicle's battery before starting any electrical work. Use appropriate gauge wiring and fuses as specified.
- Montering: Monter subwooferen sikkert for at forhindre, at den bliver til et projektil under pludselige opbremsninger eller ulykker. Undgå montering på steder, der blokerer bilens betjeningselementer eller airbags.
- Ventilation: Ensure adequate ventilation around the unit to prevent overheating. Do not cover the subwoofer with carpets or other materials that may impede airflow.
- Høreværn: Prolonged exposure to high sound pressure levels can cause permanent hearing damage. Adjust volume to a safe level.
- Professionel installation: If you are unsure about any aspect of the installation, consult a qualified car audio professional.
3. Hvad er der i æsken
Kontroller, at alle komponenter er til stede, før installationen påbegyndes.
- HERTZ DBA 201F Active Subwoofer Unit
- Wiring Harness (Power, Ground, Remote, Speaker Level Inputs)
- Remote Bass Level Control with Cable
- Mounting Hardware (screws, brackets if applicable)
- Brugervejledning (dette dokument)

Figure 2: Included accessories: remote control and wiring harness.
4. Opsætning og installation
Korrekt installation er afgørende for optimal ydeevne og sikkerhed.
4.1 Valg af monteringssted
The DBA 201F is designed for under-seat installation due to its super-flat profile. Consider locations that:
- Provide sufficient clearance for the unit and its wiring.
- Sørg for tilstrækkelig ventilation.
- Do not interfere with seat movement, vehicle controls, or safety systems.
- Offer a secure mounting surface.

Figure 3: Dimensions of the DBA 201F for placement consideration.
4.2 Ledningsforbindelser
Refer to the wiring diagram on the unit and in the full manual for specific connections. General steps include:
- Effekt (B+): Connect the main power wire (typically red) to the positive terminal of the vehicle's battery. Ensure an in-line fuse (not supplied, typically 15A as per product specifications, but verify with the unit's fuse holder) is installed close to the battery.
- Jord (GND): Connect the ground wire (typically black) to a clean, unpainted metal surface of the vehicle chassis. Ensure a solid electrical connection.
- Fjerntænding (REM): Connect the remote turn-on wire (typically blue or yellow) to the remote output of your head unit. This signal turns the subwoofer on and off with your car stereo.
- Lydindgang:
- RCA (Low-Level) Input: If your head unit has RCA pre-outs, connect them to the RCA inputs on the subwoofer.
- Speaker Level (High-Level) Input: If your head unit does not have RCA outputs, connect the speaker wires from your head unit directly to the speaker level inputs on the subwoofer's wiring harness.

Figur 4: Tilslutninger og betjeningselementer på bagpanelet.

Figure 5: Subwoofer with wiring harness connected.
5. Betjeningsvejledning
Når subwooferen er installeret, skal du justere dens indstillinger for optimal lydintegration med bilens lydsystem.
5.1 Justeringer på kontrolpanelet
The DBA 201F features several controls on its rear panel (refer to Figure 4 and Figure 6):
- GEVINST: Justerer indgangsfølsomheden for amplifier. Start with the gain at minimum and slowly increase it until the subwoofer output matches the rest of your system without distortion.
- LO-PASS (Low-Pass Filter): Sets the upper frequency limit for the subwoofer. Frequencies above this setting will be filtered out. Typically set between 50Hz and 100Hz, depending on your main speakers.
- BASS BOOST: Provides an adjustable boost to bass frequencies, usually around 45Hz. Use sparingly to avoid distortion.
- FASE: Allows you to adjust the phase of the subwoofer output (0° or 180°) to match the phase of your main speakers. Adjust this setting to achieve the most coherent bass response.
- REMOTE CONTROL TURN ON: Switch between DC (DC offset detection for high-level input) or AUDIO (audio signal detection for high-level input) for automatic turn-on, or ON for remote wire turn-on.
- INPUT: Selects between PRE (RCA/low-level input) and SPK (speaker/high-level input).

Figur 6: Detaljeret view af kontrolpanelet.
5.2 Remote Bass Level Control
The included remote bass level control allows for convenient adjustment of the subwoofer's output level from the driver's seat. Connect it to the designated port on the subwoofer.
6. Vedligeholdelse
The HERTZ DBA 201F requires minimal maintenance.
- Rensning: Brug en blød, tør klud til at rengøre enhedens yderside. Brug ikke skrappe kemikalier eller slibende rengøringsmidler.
- Inspektion: Periodically check all wiring connections to ensure they are secure and free from corrosion. Inspect the unit for any signs of damage or overheating.
- Ventilation: Sørg for, at området omkring subwooferen forbliver frit for at muliggøre korrekt varmeafledning.
7. Fejlfinding
If you experience issues with your DBA 201F, refer to the following common problems and solutions.
| Problem | Mulig årsag | Løsning |
|---|---|---|
| No Power / Unit does not turn on |
|
|
| Ingen lyd |
|
|
| Forvrænget lyd |
|
|
| Subwooferen afbrydes periodisk |
|
|
Note regarding fuses: The DBA 201F is designed with a 15A fuse. If this fuse repeatedly blows, it may indicate an underlying electrical issue, a short circuit, or the unit being driven beyond its intended limits. Ensure proper wiring and consult a professional if the issue persists.
8. Specifikationer
Technical specifications for the HERTZ DBA 201F active subwoofer.
| Mærke | HERTZ |
| Modelnummer | DBA-201F |
| Højttaler størrelse | 8 tommer (200 mm) |
| Højttaler Maksimal udgangseffekt | 440 watt (peak) |
| Frekvensrespons | 32 Hz (nedre grænse) |
| Forbindelsesteknologi | Kablet |
| Lydudgangstilstand | Omgive |
| Monteringstype | Under-seat / Tabletop Mount |
| Yderligere funktioner | Bass Boost, Remote Control |
| Controller type | Remote Control, Touch (on unit) |
| Impedans | 0.4 Ohm |
| Strømkilde | Corded Electric (Vehicle 12V) |
| Input bindtage | 6 Volts (likely referring to signal input sensitivity) |
| Varedimensioner (D x B x H) | 345 mm x 245 mm x 79 mm (13.58 cm D x 9.64 cm B x 3.11 cm H) |
| Varens vægt | 10 pund |
| Kompatible enheder | Car Audio System |
| Kompatible køretøjstyper | SUVs, Select Cars, Trucks |
9. Garantioplysninger
The HERTZ DBA 201F is covered by a 1 års producentgaranti. This warranty typically covers defects in materials and workmanship under normal use.
To claim warranty service, please retain your proof of purchase and contact the authorized HERTZ dealer or the manufacturer's customer support. The warranty does not cover damage caused by improper installation, accident, misuse, abuse, negligence, or unauthorized modification.
10. Support
For further assistance, technical support, or service inquiries regarding your HERTZ DBA 201F, please contact your authorized HERTZ dealer or visit the official HERTZ webwebsted for kontaktoplysninger til kundesupport.