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1 4
420 Watts RMS
Stetsom  |  SKU: HL400.1 BASS

STETSOM HL400.1 BASS – 420 W RMS 2 Ohm Mono Subwoofer Amplifier

€99.90
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Description

A compact monoblock amplifier entirely dedicated to bass

The STETSOM HL400.1 BASS is a subwoofer-only amplifier. It delivers up to 420 W RMS at 2 ohms and 14.4 V, with adjustable filters and bass boost to tailor the low end to your system.

420 W RMS
at 2 ohms and 14.4 V, with 1% total harmonic distortion
5 to 250 Hz
A response dedicated to low frequencies
125 × 124 × 50 mm
Width × length × height

Key Features

Adjustable bass

  • Adjustable high-pass and low-pass filters with an 18 dB/octave slope.

Two input levels

  • Low-level inputs from 0.2 to 6 V and high-level inputs from 1.5 to 20 V.

Compact design and protection

  • 50 mm high enclosure with speaker short-circuit, overheating, and out-of-range input voltage protection.

Description

When your system lacks low-end punch, a dedicated amplifier can entrust the low frequencies to your subwoofer. The STETSOM HL400.1 BASS focuses on this purpose with a 5 to 250 Hz response. Available from Sound Auto Concept, this monoblock combines a compact footprint with useful settings to integrate the subwoofer into the rest of the system.

The high-pass filter is adjustable from 5 to 35 Hz, while the low-pass filter covers 30 to 250 Hz. The bass boost offers a setting from 0 to 14 dB at an adjustable frequency from 30 to 60 Hz. The power ratings are detailed below to clearly distinguish between measurements at 13.8 V and 14.4 V.

  • Exclusively intended for amplifying a subwoofer.
  • 400 W RMS at 2 ohms and 13.8 V, or 420 W RMS at 14.4 V, with 1% total harmonic distortion.
  • High- and low-level inputs to adapt to the source signal level.
  • Indicated power input: 1 × 6 mm².
  • Recommended fuse: 30 A.

Technical Specifications

Specification Value
Brand and model STETSOM HL400.1 BASS
Type Monoblock low-frequency amplifier for subwoofer only
Power at 4 ohms and 13.8 V 245 W RMS at 1% total harmonic distortion
Power at 2 ohms and 13.8 V 400 W RMS at 1% total harmonic distortion
Power at 4 ohms and 14.4 V 275 W RMS at 1% total harmonic distortion
Power at 2 ohms and 14.4 V 420 W RMS at 1% total harmonic distortion
Operating voltage 9 to 15.5 V
Frequency response 5 to 250 Hz
Signal-to-noise ratio > 90, unit not specified in the provided data
Low-level input sensitivity 0.2 to 6 V
High-level input sensitivity 1.5 to 20 V
High-pass filter 5 to 35 Hz, 18 dB/octave slope
Low-pass filter 30 to 250 Hz, 18 dB/octave slope
Bass boost 0 to 14 dB, adjustable frequency from 30 to 60 Hz
Height 50 mm
Width 125 mm
Length 124 mm
Power input 1 × 6 mm²
Recommended fuse 30 A
Protection Speaker short-circuit, thermal, and out-of-range input voltage

Why choose it

  • To power a subwoofer with an amplifier specifically dedicated to low frequencies.
  • To benefit from clearly stated power ratings according to impedance and supply voltage.
  • To adjust the low-frequency reproduction range using the two adjustable filters.
  • To have high- and low-level inputs in a compact format.

⚠️ IMPORTANT - INSTALLATION: It is IMPERATIVE to connect this amplifier to the impedance recommended by the manufacturer and to use the recommended cable size. For amplifiers over 2000 W RMS, the vehicle's original battery is no longer sufficient. It is strongly recommended to adapt the electrical supply (additional battery, upgraded alternator) to the amplifier's power consumption to avoid any risk of failure and ensure optimal performance. CAUTION: Any voltage drop below 12 V can damage the product.

Check before installation

Provide the recommended 30 A fuse and check the wiring as well as the impedance of your subwoofer. The stated operating range is 9 to 15.5 V; this does not eliminate the installation precautions above. This model is not intended for mid-range speakers or tweeters.

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Stetsom

STETSOM HL400.1 BASS – 420 W RMS 2 Ohm Mono Subwoofer Amplifier

€99.90

A compact monoblock amplifier entirely dedicated to bass

The STETSOM HL400.1 BASS is a subwoofer-only amplifier. It delivers up to 420 W RMS at 2 ohms and 14.4 V, with adjustable filters and bass boost to tailor the low end to your system.

420 W RMS
at 2 ohms and 14.4 V, with 1% total harmonic distortion
5 to 250 Hz
A response dedicated to low frequencies
125 × 124 × 50 mm
Width × length × height

Key Features

Adjustable bass

  • Adjustable high-pass and low-pass filters with an 18 dB/octave slope.

Two input levels

  • Low-level inputs from 0.2 to 6 V and high-level inputs from 1.5 to 20 V.

Compact design and protection

  • 50 mm high enclosure with speaker short-circuit, overheating, and out-of-range input voltage protection.

Description

When your system lacks low-end punch, a dedicated amplifier can entrust the low frequencies to your subwoofer. The STETSOM HL400.1 BASS focuses on this purpose with a 5 to 250 Hz response. Available from Sound Auto Concept, this monoblock combines a compact footprint with useful settings to integrate the subwoofer into the rest of the system.

The high-pass filter is adjustable from 5 to 35 Hz, while the low-pass filter covers 30 to 250 Hz. The bass boost offers a setting from 0 to 14 dB at an adjustable frequency from 30 to 60 Hz. The power ratings are detailed below to clearly distinguish between measurements at 13.8 V and 14.4 V.

  • Exclusively intended for amplifying a subwoofer.
  • 400 W RMS at 2 ohms and 13.8 V, or 420 W RMS at 14.4 V, with 1% total harmonic distortion.
  • High- and low-level inputs to adapt to the source signal level.
  • Indicated power input: 1 × 6 mm².
  • Recommended fuse: 30 A.

Technical Specifications

Specification Value
Brand and model STETSOM HL400.1 BASS
Type Monoblock low-frequency amplifier for subwoofer only
Power at 4 ohms and 13.8 V 245 W RMS at 1% total harmonic distortion
Power at 2 ohms and 13.8 V 400 W RMS at 1% total harmonic distortion
Power at 4 ohms and 14.4 V 275 W RMS at 1% total harmonic distortion
Power at 2 ohms and 14.4 V 420 W RMS at 1% total harmonic distortion
Operating voltage 9 to 15.5 V
Frequency response 5 to 250 Hz
Signal-to-noise ratio > 90, unit not specified in the provided data
Low-level input sensitivity 0.2 to 6 V
High-level input sensitivity 1.5 to 20 V
High-pass filter 5 to 35 Hz, 18 dB/octave slope
Low-pass filter 30 to 250 Hz, 18 dB/octave slope
Bass boost 0 to 14 dB, adjustable frequency from 30 to 60 Hz
Height 50 mm
Width 125 mm
Length 124 mm
Power input 1 × 6 mm²
Recommended fuse 30 A
Protection Speaker short-circuit, thermal, and out-of-range input voltage

Why choose it

  • To power a subwoofer with an amplifier specifically dedicated to low frequencies.
  • To benefit from clearly stated power ratings according to impedance and supply voltage.
  • To adjust the low-frequency reproduction range using the two adjustable filters.
  • To have high- and low-level inputs in a compact format.

⚠️ IMPORTANT - INSTALLATION: It is IMPERATIVE to connect this amplifier to the impedance recommended by the manufacturer and to use the recommended cable size. For amplifiers over 2000 W RMS, the vehicle's original battery is no longer sufficient. It is strongly recommended to adapt the electrical supply (additional battery, upgraded alternator) to the amplifier's power consumption to avoid any risk of failure and ensure optimal performance. CAUTION: Any voltage drop below 12 V can damage the product.

Check before installation

Provide the recommended 30 A fuse and check the wiring as well as the impedance of your subwoofer. The stated operating range is 9 to 15.5 V; this does not eliminate the installation precautions above. This model is not intended for mid-range speakers or tweeters.

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