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SALT-4

1 review

4000 Watt

SALT-4

1 review

Technical Highlights

  • Power: 4000W RMS @ 1 Ohm, 2000W RMS @ 2 Ohm, 1000W @ 4 Ohm.
  • Impedance: Stable at 1 Ohm, Efficiency: over 90%, 4-way protection.
  • Operating voltage: 9-15.5V, Phases: 0-180 degrees, THD: less than 1%.
  • More technical details
€2,349.00
€2,349.00 €2,349.00
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ProductSALT-4

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Warranty terms
datasheet
Sundown AudioSALT-6
Sundown Audio-SALT-6-1-Kanal Verstärker-masori-kaufen
Sundown Audio-SALT-3-1-Kanal Verstärker-masori-kaufen
Sundown AudioSALT-3
Sundown Audio-SALT-4-1-Kanal Verstärker-masori-kaufen
€2,349.00
€2,349.00 €2,349.00

More power than SALT-4 here!

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Discover your love for music with the SALT-4, a 1-channel amplifier from Sundown Audio. With this amplifier, you will experience the next generation of Korean Class-D technology. The SALT amplifier series promises optimal performance at realistic operating voltages and is the result of 15 years of experience in the high-end amplifier sector. Whether you are a world-class music competitor or just a music fan, the SALT-4 will bring out the best in your audio system. Designed with a keen eye for detail, the amplifier offers high performance and durability. The exterior appearance, with its heavy, titanium-colored heat sink, is just as impressive as its technical specifications. Additionally, the remote control with temperature, voltage, and clipping display makes monitoring your system easier. Enhance your music enjoyment with SALT-4.

properties

  • The Sundown Audio SALT amplifiers represent the pinnacle of Korean Class-D amplifier technology. They stand on the shoulders of three previous generations of Korean high-end amplifiers from 15 years (the SAZ v.1, SAZ v.2, and SCV series) to achieve even higher performance. Our customers have been asking us for many years to produce amplifiers that deliver optimal performance at realistic operating voltages in the 12-volt range and not at 14+ volts. The SALT - Sundown Audio Low-Voltage Technology - series is our answer!
  • "Whether you are a world-class SPL competitor, a dedicated enthusiast, or simply a fan of sound quality, the SALT series will feel at home in your system. Each individual model has been designed with great attention to detail to ensure that they bring a smile to your face every time the music starts playing, and that they will last for many years to come."
  • Cosmetically, they deviate significantly from our original design, which is an external indicator of the improved performance level. The heatsink is the heaviest we have ever produced, has the largest surface area, and is finished in a striking titanium color. These amplifiers look as good as they sound, and once you hold one in your hands, the build quality is obvious. The icing on the cake is the revised remote control with temperature, voltage, and clipping indicators, allowing you to easily monitor the vital signs of your valuable audio system.
  • Digital connectable Class D mono block amplifier
  • Dual MOS-FET PWM Power Supply
  • Stable 1-Ohm Load
  • 24 dB/Octave - Variable Low-Pass Filter
  • 24 dB/Octave - Variable Subsonic Filter
  • 9 dB/Octave - Variable Bass Boost
  • 180° variable phase shift
  • 4-way protection circuit (thermal, voltage, speaker short circuit, DC offset)
  • Wired remote control with voltage and temperature display and clipping indicator

Technical Data

  • Input sensitivity: 6V - 0.2V
  • 4000 x 1 @ 1 Ohm RMS Mono
  • 2000 x 1 @ 2 Ohm RMS Mono
  • 1000 x 1 @ 4 Ohm RMS Mono
  • Variable Subsonic Crossover Filter: 10HZ - 50HZ
  • Variable low-pass filter: 35Hz - 250Hz
  • Bass boost at 45Hz 0-9dB
  • Efficiency: 90% <
  • Signal-to-noise ratio: 90DB <
  • Damping factor : 400 <
  • Frequency response: 10 Hz - 250 Hz
  • Control of the phase shift 0-180 degrees
  • Tested Voltage & THD: 12.8V & less than 1% THD
  • Operating voltage: DC 9V - 15.5V input voltage
  • Recommended fuse: 400 Amperes
  • Dimensions 56 cm L x 21.8 cm W x 6.6 cm H

datasheet

Open data sheet

Frequently Asked Questions about SALT-4

What power does the Sundown Audio SALT-4 Amplifier provide?

The Sundown Audio SALT-4 Amplifier offers an impressive output power of 4000 Watts RMS at 1 Ohm. This is particularly useful for music lovers who desire powerful audio performance. At 2 Ohm, it delivers 2000 Watts RMS and at 4 Ohm still provides a remarkable 1000 Watts RMS. These high outputs are ideal for applications with subwoofers and ensure that the amplifier maintains its performance even with demanding music pieces. It operates at supply voltages between 9V and 15.5V, allowing flexibility in various car systems, while the input sensitivity ranges from 6V to 0.2V, accommodating a wide spectrum of input signals.

What filter systems are integrated into the SALT-4?

The SALT-4 integrates several highly effective filter systems to optimize sound quality. A 24 dB/octave variable low-pass filter allows you to finely tune the bass range and reduce unwanted frequencies. The subsonic filter, also 24 dB/octave, is adjustable from 10 Hz to 50 Hz and protects your speakers from damage caused by excessively low frequencies. The variable bass boost of 9 dB at 45 Hz enables you to specifically enhance certain bass frequencies. These features are essential for perfectly adapting the sound to your preferences and the acoustics of your vehicle.

How does the heat sink of the SALT-4 affect performance?

The SALT-4 is equipped with a particularly heavy heat sink in titanium color, which optimizes heat dissipation and efficiently maintains the amplifier's performance. Especially at high outputs or during long listening sessions, effective cooling is crucial to avoid thermal shutdowns. The heat sink provides the largest surface contact area that Sundown Audio has ever developed, ensuring maximum heat dissipation. The striking titanium color not only adds aesthetic value but also improves thermodynamic properties. This technical design significantly enhances the longevity of the amplifier.

What protection features does the SALT-4 Amplifier have?

The SALT-4 Amplifier is equipped with a 4-way protection circuit that provides essential safety functions. This includes thermal protection to prevent overheating, as well as voltage protection to safeguard against excessive voltage spikes. A speaker short-circuit protection is implemented to prevent damage in case of shorts. Additionally, the DC offset protection guards against DC shifts that could damage audio components. These comprehensive protection features not only ensure safety and reliability but also contribute to the longevity of the amplifier and keep your audio system in a safe operating condition.

Is the SALT-4 Amplifier compatible with all vehicles?

The physical dimensions of the SALT-4 are 56 cm in length, 21.8 cm in width, and 6.6 cm in height. These measurements are crucial to ensure compatibility within the installation spaces of most vehicle types. Given this size, the amplifier should be able to fit in most trunks or vehicle rear areas. However, when integrating it into your vehicle, it is advisable to consider the specific space conditions, especially if additional components are housed in the trunk. Careful planning during installation can avoid space shortages or placement issues.

How does the remote control of the SALT-4 work?

The remote control of the SALT-4 Amplifier is a sophisticated control instrument specifically designed to facilitate the monitoring and control of your audio system. It includes displays for temperature, voltage, and clipping, allowing you to keep an eye on the operating conditions of the amplifier at all times. These displays inform you about the thermal load and voltage status of your system, which is particularly beneficial when playing power-hungry music. The clipping indicator provides visual feedback on whether the amplifier is reaching its power limit, helping to avoid sound distortion.

What are the acoustic features of the SALT-4?

The SALT-4 offers a wide acoustic spectrum with a frequency response of 10 Hz to 250 Hz. This allows for precise representation of both very deep bass and mid-range frequencies. With an efficiency of over 90%, the amplifier is also extremely energy-efficient, which conserves the vehicle's Battery. The signal-to-noise ratio is over 90 dB, ensuring clear and noise-free sound. The damping factor of over 400 provides precise control of the speaker diaphragm movements, further enhancing sound quality. These features make the SALT-4 a top choice for audiophiles.

How can the phase shift of the SALT-4 be adjusted?

The phase shift of the SALT-4 Amplifier can be set between 0 and 180 degrees, providing enormous flexibility in sound setup. This feature is particularly important when using subwoofers to ensure that the bass plays in harmony with the main speakers. By accurately adjusting the phase, timing issues caused by different speaker placements can be resolved. In systems with multiple amplifiers, this optimizes the perception of the soundstage. It is an important feature to fully exploit the potential of your audio system and minimize sound distortions.

What testing criteria has the SALT-4 Amplifier undergone?

The SALT-4 Amplifier was tested at a voltage of 12.8V, with a total harmonic distortion of less than 1%. These tests are essential to ensure that the amplifier meets its promises regarding performance and sound quality under realistic conditions. The THD values are crucial for the sound purity and quality that the amplifier provides. Adhering to these testing criteria guarantees that you receive an amplifier that is not only powerful but also meets audiophile standards. These tests ensure that the SALT-4 operates reliably and faithfully even at peak loads.

How does the Dual MOS-FET PWM power supply affect the performance of the SALT-4?

The Dual MOS-FET PWM power supply of the SALT-4 ensures efficient energy conversion and high power stability. MOS-FETs offer high switching speed and low resistance, resulting in minimal energy losses and maximum efficiency. This technology allows the amplifier to handle large power ranges without overheating or power loss. Especially if you enjoy listening to music at high volumes, this type of power supply ensures that the amplifier is always optimally supplied and delivers full sound quality. The PWM circuit also enhances precision and control over the output power, resulting in clearer and more powerful sound.

Manufacturer information/responsible person

JR Labs
Rainer Jakob
Heinrich-Hertz-Straße 13 A
46325 Borken
Germany

Contact: jakobrainer@jr-labs.eu

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