Hertz Dieci DBA 201 Active Subwoofer Double Passive Radiator Sub Box Enclosure

The Hertz Dieci DBA 201 is an active 8-inch (200 mm) subwoofer enclosure with a built-in 220W RMS (440W peak) Class D amplifier and double passive radiators, from Hertz's Dieci range.

This listing is the DBA 201. The Hertz Dieci DBA 201 is also available in a super-flat under-seat version: Hertz Dieci DBA 201 F Active Under Seat Subwoofer.

Because the amplifier is built in, no separate subwoofer amplifier is needed. It accepts speaker-level signals from factory radios as well as RCA line-level signals from aftermarket head units.

Key specifications

• Driver: 200 mm (8 in.), 0.4 ohm
• Amplifier: 220W RMS, 440W peak, Class D
• Enclosure: solid MDF with double passive radiators
• Frequency response: 50 to 150 Hz
• Low-pass filter: 50 to 150 Hz at 24 dB/oct
• Bass boost: 0 to 6 dB at 45 Hz; phase 0 to 180 degrees
• Subsonic filter: 15 Hz at 24 dB/oct
• Inputs: speaker level 1.2 to 30 V RMS, RCA 0.2 to 5 V RMS
• Operating voltage: 6.5 to 18 V
• Auto turn-on (audio sense) and Plug & Play Molex harness

DBA 201 SUB BOX

200 (8) mm (in.) | 440 W peak | 0.4 Ohm | Active subwoofer box with double passive radiators

High performance in a compact stylish design

The DBA 201 enclosure is built from solid MDF and optimised with FEM simulation to maximise subwoofer output. The 8-inch driver's massive magnet maintains precise cone control even at maximum excursion.

Extra full set of controls to fine-tune the in-car performance

The built-in 24 dB/oct low-pass crossover filter has a variable corner frequency (50 to 150 Hz) to match the DBA 201 to your speaker system. Adjustable bass boost (0 to 6 dB at 45 Hz) compensates for OEM sound equalisation. The phase inverter (0 to 180°) optimises phase alignment regardless of the subwoofer's position in the car. The subsonic filter (15 Hz at 24 dB/oct) protects the cone from over-excursion and the amplifier from overheating. Input sensitivity control maximises overall system output while preventing clipping.

Auto turn-on and standby mode

The built-in audio sense circuit turns the DBA 201 on automatically and times out to standby when no signal is detected. Audio sense can be disabled when a remote turn-on wire is available.

The 440W peak (220W RMS) Class D amplifier uses He-Li technology (high efficiency/low impedance), optimised for the 0.4 Ω load of the DBA 201 driver. It draws less current from the vehicle's electrical system than a conventional amplifier.

The DBA 201 handles speaker-level signals up to 30 V (1.2 V to 30 V RMS) with USS for OEM systems, and RCA line-level inputs (0.2 V to 5 V RMS) for aftermarket head units. Low idling current and a wide operating voltage range (6.5 V to 18 V) make it fully EV compatible.

A Plug & Play Molex® harness — including the power connection — lets you unplug and remove the DBA 201 quickly whenever you need the extra cargo space.