3. Bestseller Amplifier
  5. SALT-1.5

SALT-1.5

1500 Watt

SALT-1.5

Technical Highlights

  • 1,500 W @ 1 Ohm RMS power, 90% efficiency, 160 A fuse.
  • Class-D mono-block, 24dB subsonic and low-pass filter, 1 Ohm stable.
  • Wired remote control, display for voltage, temperature.
  • More technical details
€979.00
€979.00 €979.00
2% discount with credit card

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ProductSALT-1.5

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Sundown Audio-SALT-1-1-Kanal Verstärker-masori-kaufen
Sundown AudioSALT-1
Sundown Audio-SALT-1.5-1-Kanal Verstärker-masori-kaufen
€979.00
€979.00 €979.00

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The SALT-1.5 from Sundown Audio is a 1-channel amplifier that stands out due to its innovative Korean Class-D technology. With 15 years of development time, it offers optimal performance at realistic operating voltages in the 12V range. Special features include the dual MOS-FET PWM power supply and the ability for digital coupling as a Class D mono block amplifier. The amplifier impresses with a striking titanium design and a robust heat sink that underscores its high-quality workmanship. A wired remote control allows for monitoring of voltage, temperature, and clipping, while comprehensive protection mechanisms ensure a lasting sound experience.

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 to achieve even higher performance.
  • "Whether you are a world-class SPL competitor, a dedicated enthusiast, or a fan of sound quality, the SALT series will feel at home in your system."
  • "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 and is finished in a striking titanium color."
  • 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

  • 1,500 x 1 @ 1 ohm RMS mono
  • 750 x 1 @ 2 ohms RMS mono
  • 400 x 1 @ 4 ohms RMS mono
  • 24dB variable subsonic filter: 10HZ - 50HZ
  • 24dB variable low pass filter: 35Hz - 250Hz
  • Variable bass boost @ 45Hz 0-9dB
  • Digital Class-D Linkable Mono Block Amplifier
  • Phase shift control 0-180 degrees
  • Power, clipping & protection indicators included
  • Thermal, voltage, speaker short, and dc-offset protection circuitry
  • Included wired remote control displays voltage, temperature, and clipping
  • Input sensitivity: 6 V – 0.2 V
  • Efficiency: 90 % <
  • Signal-to-noise ratio: 90 dB <
  • Damping factor: 400 <
  • Frequency response: 10 Hz – 250 Hz
  • Tested voltage and THD: 12.8 V and less than 1% THD
  • Operating voltage: DC 9 V – 15.5 V
  • Recommended fuse: 160 A

Frequently Asked Questions about SALT-1.5

How does Class-D technology work in the Sundown Audio SALT-1.5 Amplifier?

The heart of the Sundown Audio SALT-1.5 is the Korean Class-D technology. This enables extremely efficient signal amplification through digital modulation. By using dual MOS-FET PWM power supply, a high power density is achieved with low losses. This leads to stable and efficient energy conversion, which can be particularly impressive in critical SPL competitions or audiophile setups. The ability to couple digitally as a mono block amplifier underscores the flexibility of the design. The high-end technology results in an efficiency of over 90%. This is a crucial feature, especially for enthusiasts and professional installations.

What power ratings does the Sundown Audio SALT-1.5 Amplifier achieve at different Ohm resistances?

The SALT-1.5 Amplifier features variable power output depending on the impedance. At a load of 1 Ohm, the amplifier delivers 1,500 Watts RMS, which is ideal for intense speaker drives. At a 2 Ohm load, the power drops to 750 Watts, optimized for medium to high volumes in a Hi-Fi setup. At 4 Ohm, 400 Watts RMS is available, a conscious choice for economical yet powerful sound systems. This amplifier is versatile and offers options for a multifaceted sound experience based on individual requirements.

What filter functions does the Sundown Audio SALT-1.5 offer?

The SALT-1.5 is equipped with a variety of filter options to precisely adjust the sound. The variable subsonic filter with -24 dB/octave operates between 10 Hz and 50 Hz and is suitable for eliminating unwanted low-frequency vibrations. The low-pass filter, also -24 dB/octave, can be set in the range of 35 Hz to 250 Hz, allowing for fine-tuning of the bass range. The amplifier additionally offers a variable bass boost at 45 Hz, ranging from 0 to 9 dB, which can strongly emphasize the low bass according to preference. This allows for optimal adjustment of the listening pleasure.

How does the heat sink influence the design and function of the amplifier?

The heatsink of the SALT-1.5 is not only an aesthetic aspect of the Amplifier but also crucial for heat dissipation. Made in a striking titanium finish, it impresses with robustness and effectiveness. Its special design efficiently dissipates heat from the internal components, enhancing the longevity of the Amplifier as well as its performance in long operating scenarios. The sizing of the heatsink is designed for maximum thermal stability and supports use in high-performance applications as well as in demanding sound environments.

How does the wired remote control of the SALT-1.5 work?

The wired remote control of the Sundown Audio SALT-1.5 provides real-time information on voltage, temperature, and clipping status. For tech-savvy users, this functionality is essential to constantly monitor the performance of the Amplifier and make adjustments. Especially when operating in borderline conditions, it is important to maintain control over these parameters at all times to minimize sound distortion and ensure the longevity of the components. This remote control allows for precise adjustments and significantly contributes to the safe and efficient use of the Amplifier.

What protection mechanisms does the Sundown Audio SALT-1.5 have?

The SALT-1.5 is equipped with a comprehensive 4-way protection circuit that includes essential safety mechanisms. It thermally responds to overheating by reducing or shutting off power to protect the internal components. The voltage protection monitors the input and operating voltage to prevent damage from over or under voltage. Short circuit and DC offset protection prevent damage from faulty speaker connections or direct current. These sophisticated protection mechanisms ensure reliable operation and make the Amplifier suitable for professional and demanding audio applications.

In which frequency ranges does the Sundown Audio SALT-1.5 Amplifier operate?

The frequency response of the SALT-1.5 covers the range from 10 Hz to 250 Hz, ideal for low-frequency applications in the audio field. This bandwidth allows for detailed reproduction of sub-bass to lower midrange. The Amplifier is particularly advantageous for sound configurations where deep bass strength is required. A signal-to-noise ratio of over 90 dB ensures that even at high levels, no disturbing background noise becomes audible, which is an important quality feature, especially when used in high-end HiFi systems. This underscores the ability of the SALT-1.5 to represent the finest nuances in the lower frequency spectrum.

What recommendations are there for the operating voltage and current fuse of the SALT-1.5?

For optimal operation of the SALT-1.5, an operating voltage in the range of 9 V to 15.5 V DC is recommended. This fits well within the typical voltage environment of vehicles. A tested voltage with a THD of less than 1% at 12.8 V shows the high sound purity that is achieved even under normal operating conditions. A 160 A Fuse is recommended to secure the circuit, ensuring that sudden current spikes do not damage the Amplifier. These specifications guarantee safe integration into automotive dynamic systems and effectively prevent electrical incidents.

What types of phase shift does the Sundown Audio SALT-1.5 Amplifier offer?

The Sundown Audio SALT-1.5 Amplifier offers a variable phase shift of 0 to 180 degrees. This setting allows for adjusting the phase of the audio output to meet the specific requirements of the system. In many installations, it may be necessary to change the phase of the subwoofer so that it resonates in harmony with the main speakers, ensuring coherent sound reproduction without interference. Especially when multiple Amplifiers or speaker groups operate in a system, adjusting the phase is essential to optimize the acoustic properties of the overall system.

What efficiency does the SALT-1.5 Amplifier from Sundown Audio have?

The SALT-1.5 achieves an efficiency of over 90%, which is particularly high for a digital Class-D mono block Amplifier. This efficiency is crucial for minimizing energy losses in the form of heat. A high efficiency also means that more of the supplied energy is actually converted into acoustic power rather than heat, reducing operating costs and lessening environmental impact. Especially in environments with limited heat dissipation, such as closed vehicle installations, this level of efficiency is critical to deliver power stably without overheating the device.

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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