1. Introduction and 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.
Key Features:
- High performance in a super-flat design.
- Internal 440-watt peak Class D amplifier.
- Compatible with various car audio systems.
- Plug & Play connection for simplified installation.
- Comprehensive set of controls for fine-tuning in-car audio performance.
Figure 1: Front view of the HERTZ DBA 201F active under-seat subwoofer.
2. Safety Information
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.
- Electrical Connections: 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.
- Mounting: Securely mount the subwoofer to prevent it from becoming a projectile during sudden stops or accidents. Avoid mounting in locations that obstruct vehicle controls or 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.
- Hearing Protection: Prolonged exposure to high sound pressure levels can cause permanent hearing damage. Adjust volume to a safe level.
- Professional Installation: If you are unsure about any aspect of the installation, consult a qualified car audio professional.
3. What's in the Box
Verify that all components are present before beginning installation.
- 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)
- User Manual (this document)
Figure 2: Included accessories: remote control and wiring harness.
4. Setup and Installation
Proper installation is crucial for optimal performance and safety.
4.1 Choosing a Mounting Location
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.
- Allow for adequate 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 Wiring Connections
Refer to the wiring diagram on the unit and in the full manual for specific connections. General steps include:
- Power (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.
- Ground (GND): Connect the ground wire (typically black) to a clean, unpainted metal surface of the vehicle chassis. Ensure a solid electrical connection.
- Remote Turn-On (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.
- Audio Input:
- 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.
Figure 4: Rear panel connections and controls.
Figure 5: Subwoofer with wiring harness connected.
5. Operating Instructions
Once installed, adjust the subwoofer settings for optimal sound integration with your vehicle's audio system.
5.1 Control Panel Adjustments
The DBA 201F features several controls on its rear panel (refer to Figure 4 and Figure 6):
- GAIN: Adjusts the input sensitivity of the 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.
- PHASE: 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).
Figure 6: Detailed view of the control panel.
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. Maintenance
The HERTZ DBA 201F requires minimal maintenance.
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Do not use harsh chemicals or abrasive cleaners.
- Inspection: 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: Ensure that the area around the subwoofer remains clear to allow for proper heat dissipation.
7. Troubleshooting
If you experience issues with your DBA 201F, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power / Unit does not turn on |
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| No Sound |
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| Distorted Sound |
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| Subwoofer cuts out intermittently |
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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. Specifications
Technical specifications for the HERTZ DBA 201F active subwoofer.
| Brand | HERTZ |
| Model Number | DBA-201F |
| Speaker Size | 8 Inches (200mm) |
| Speaker Maximum Output Power | 440 Watts (Peak) |
| Frequency Response | 32 Hz (Lower limit) |
| Connectivity Technology | Wired |
| Audio Output Mode | Surround |
| Mounting Type | Under-seat / Tabletop Mount |
| Additional Features | Bass Boost, Remote Control |
| Controller Type | Remote Control, Touch (on unit) |
| Impedance | 0.4 Ohms |
| Power Source | Corded Electric (Vehicle 12V) |
| Input Voltage | 6 Volts (likely referring to signal input sensitivity) |
| Item Dimensions (D x W x H) | 13.58"D x 9.64"W x 3.11"H (345mm x 245mm x 79mm) |
| Item Weight | 10 Pounds |
| Compatible Devices | Car Audio System |
| Compatible Vehicle Types | SUVs, Select Cars, Trucks |
9. Warranty Information
The HERTZ DBA 201F is covered by a 1-Year Manufacturer Warranty. 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 website for customer support contact information.
