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SMD HLC-2 High-Low Adapter
SKU:  HLC-2

HLC-2

SKU:  HLC-2

Technical Highlights

  • Max. input voltage 40V RMS, output voltage over 10V RMS.
  • Output impedance 100 Ohm, THD+N <0.003% for clear signal.
  • Audiophile op-amps, operating temperature range 6-18 VDC.
  • More technical details
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HLC-2 by SMD Description

The SMD HLC-2 is a High-Low Adapter with an integrated signal processor for processing incoming and outgoing signals. The military-grade high-speed power supply operates in the range of 6 to 18 V and is compatible with 16 V systems as well as STOP/START. It features operational amplifiers from Texas Instruments/Burr Brown and a double-layer FR4 board in military quality. High-frequency filtering removes Class-D noise at the factory radio output, which operates in Class A/B. The frequency range is 10 to 40,000 Hz ±0.3 dB, the signal-to-noise ratio is >115 dBA (20–20 kHz), and THD+N is <0.005 % (20 Hz–20,000 Hz) or <0.003 % at 1 kHz, 4 V RMS. The maximum input voltage is 40 V RMS BTL, and the maximum clean output voltage is >10 V RMS at 100 Ohm output impedance. The current consumption is 80 mA at 12.6 V, and a blue LED indicates operation. Dimensions: 10.4 x 5.5 x 2 cm. It can also be used as a line driver or phase inverter.

Features
  • High-Low Adapter
  • Integrated signal processor for signal processing
  • Military-grade high-speed power supply
  • Operational amplifiers from Texas Instruments/Burr Brown
  • Double-layer FR4 board in military quality
  • High-frequency filtering to remove Class-D noise
  • Class A/B output
  • Can be used as a line driver or phase inverter
  • Dimensions 10.4 x 5.5 x 2 cm
Technical Specifications
  • Operating voltage range 6 - 18 VDC
  • Frequency range (min gain) 10 - 40,000 Hz ±0.3 dB
  • Signal-to-noise ratio >115 dBA (20 - 20 kHz)
  • THD+N 20 Hz - 20,000 Hz <0.005 %
  • THD+N 1 kHz, 4 V RMS <0.003 %
  • Maximum input voltage 40 V RMS BTL
  • Maximum clean output voltage >10 V RMS
  • Output impedance 100 Ohm
  • Current consumption at 12.6 V 80 mA
  • Operating indicator blue LED

Frequently Asked Questions about HLC-2

What is the operating temperature range of the SMD HLC-2?

The SMD HLC-2 operates within an operating temperature range of 6 to 18 VDC, making it suitable for a variety of applications. Its military-grade high-speed power supply minimizes any interference even under changing conditions. The adapter is robust enough to reliably function in vehicle environments with stop/start technology and 16V systems. Thus, the HLC-2 is an extremely versatile high-low adapter that delivers consistently high performance under various voltage conditions. Ensure that the power source is within these parameters to guarantee optimal performance and avoid potential damage.

What is the signal-to-noise ratio of the SMD HLC-2?

The SMD HLC-2 offers an outstanding signal-to-noise ratio (SNR) of over 115 dBA in the range of 20 Hz to 20 kHz. This excellent specification ensures that the audio signal remains extremely clean and free from unwanted background noise. The use of audiophile operational amplifiers from Texas Instruments / Burr Brown further enhances this quality, allowing the HLC-2 to meet the claim of delivering a noise-free and linear audio signal. This feature is particularly important for audiophiles and professional applications to significantly improve sound quality.

What function does the SMD HLC-2 serve as a phase inverter?

The SMD HLC-2 can be used as a phase inverter by reversing the soldering of high-level inputs for connection. This is useful when you want to synchronize two identical bridge amplifiers, such as the subwoofer amplifiers from the E-series. You route the signal from the pass-through output of the first amplifier into the HLC-2 and output it with reversed polarity to the second amplifier. This allows you to optimally utilize the power of two amplifiers, either connected in parallel or in series as the optimal audio solution for complex setups.

What are the dimensions of the SMD HLC-2?

The SMD HLC-2 is compactly built and has dimensions of 10.4 x 5.5 x 2 cm. This small size allows for easy installation even in the smallest vehicles, such as motorcycles or golf carts. Thanks to integrated cable tie slots, you can easily secure the adapter and position it in a way that takes up little space while ensuring efficient functionality. Its low weight and compact design are particularly advantageous for applications that require a space-saving solution without sacrificing performance.

How is the SMD HLC-2 installed?

The installation of the SMD HLC-2 is straightforward thanks to its thoughtful design. The integrated slots for cable attachment allow for quick and secure mounting within the vehicle using standard cable ties. It can be easily attached in a suitable location in the car to optimally utilize the existing cable paths. Connecting with high-level factory radios is also simple by wiring the adapter to the existing outputs and amplifiers. Make sure that all connections are correct and secure to ensure optimal audio performance.

What role do the operational amplifiers play in the SMD HLC-2?

The operational amplifiers built into the SMD HLC-2 from Texas Instruments / Burr Brown are crucial for the audiophile sound quality of the high-low adapter. They significantly minimize noise and distortion, which is especially noticeable in higher-end car audio systems. These op-amps lead to an extremely linear and clean audio signal path, which shows consistent results even at high volumes and dynamic music passages. Especially if you enjoy listening to music loudly, you will appreciate the quality and performance of these amplifiers, as they enable clear and detailed playback.

What output voltage does the SMD HLC-2 deliver?

The SMD HLC-2 impresses with a maximum clean output voltage of over 10 V RMS. This high output voltage is ideal for pairing with various amplifiers to guarantee optimal power delivery. The output remains linear and low-noise, even under continuous load. The low output impedance of 100 Ohms plays a crucial role in making the signal transmission efficient and lossless. In complex audio systems, this ensures excellent sound fidelity and a balanced overall output, regardless of the speaker configurations you use.

What frequency ranges does the SMD HLC-2 support?

The SMD HLC-2 impressively supports a frequency range of 10 to 40,000 Hz with minimal amplification and an accuracy of +/-0.3dB. This wide spectrum ensures that the adapter processes both low bass and high frequencies with detail and precision, without compromising signal quality. Combined with high-quality signal processing technology, the HLC-2 is capable of authentically and faithfully transmitting the entire sound range of your audio source, which is particularly beneficial for diverse music genres.

What is the power consumption of the SMD HLC-2?

The SMD HLC-2 has a power consumption of 80 mA at 12.6 V, making it extremely efficient in operation. This low power consumption means that the adapter can be easily used in systems with limited power capacities. Due to its energy-efficient performance, the HLC-2 is particularly suitable for vehicles where energy consumption is critical, such as motorcycles or electric cars. The low energy requirement contributes to the longevity of the system and ensures stable performance with minimal power needs.

How does the high-frequency filter of the SMD HLC-2 affect the audio signal?

The high-frequency filter of the SMD HLC-2 plays a crucial role in signal processing. It removes disruptive Class-D noise that is often found in factory radios. As a result, the output signal is significantly clearer and more detailed, which is especially noticeable in high-quality audio applications. The integrated technology ensures that both complex music playback and clear voice transmission occur optimally, without being affected by high-frequency interference. For sound enthusiasts who are keen to achieve the best possible audio quality, the high-frequency filter is an essential component of the HLC-2's excellent performance.

Manufacturer information / responsible person

Cool Network
Kishan Loilargosain
Koninginnestraat 77
2515 Hospital The Hague
Netherlands

Contact: info@coolnetwerk.nl