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  5. CO-70.4

CO-70.4

110 Watt

CO-70.4

Technical Highlights

  • Four times 70 WRMS power at 4 Ohms, switchable high-pass and low-pass filters.
  • Four times 110 WRMS at 2 Ohms, 220 WRMS bridged at 4 Ohms.
  • Input 0.2-8 Volts, automatic power-on via RCA input.
  • More technical details
€249.00
€249.00 €249.00
2% discount with credit card

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ProductCO-70.4

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1 year extra warranty

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datasheet
Audio System-CO-70.4-4-Kanal Verstärker-masori-kaufen
€249.00
€249.00 €249.00

CO-70.4 is a 4-Channel Amplifier from Audio System with Class-AB amplifier technology. The model features variable, switchable high-pass and low-pass filters and an optional RTC. The input sensitivity ranges from 0.2 to 8 volts. An RCA high-level input with automatic turn-on is integrated. The output power is 4 x 70 W RMS at 4 ohms, 4 x 110 W RMS at 2 ohms, or 2 x 220 W RMS mono at 4 ohms. The dimensions are 280 x 47 x 171 mm.

Features
  • 4-Channel Amplifier
  • Class-AB amplifier technology
  • Variable, switchable high-pass and low-pass filters
  • RTC optional
  • Input sensitivity 0.2–8 V
  • RCA high-level input with automatic turn-on
Technical Specifications
  • 4 x 70 W RMS at 4 ohms
  • 4 x 110 W RMS at 2 ohms
  • 2 x 220 W RMS mono at 4 ohms
  • Dimensions 280 x 47 x 171 mm

Frequently Asked Questions about CO-70.4

What power does the CO-70.4 provide at different impedances?

The CO-70.4 offers 4x 70 WRMS at 4 Ohm, ideal for speakers with higher impedance. If you reduce the impedance to 2 Ohm, you get 4x 110 WRMS, which allows for a significantly higher output. Additionally, you can switch the amplifier to a 2-channel mode at 4 Ohm to get 2x 220 WRMS for Subwoofer or other high-performance drivers. These power specifications demonstrate the flexibility of the amplifier in various setups, allowing you to achieve the optimal sound for your needs, whether you are driving large speakers or Subwoofer. The power is designed to cover a wide range of impedance configurations.

How do the switchable HP and LP filters work in the CO-70.4?

The switchable HP (high-pass) and LP (low-pass) filters in the CO-70.4 amplifier allow you to customize the frequency response. These filters provide precise control over the audio signal by eliminating unwanted frequencies either above or below a certain threshold. This is particularly beneficial when you want to highlight specific sound characteristics of your speakers or Subwoofer. By activating the filters, you can prioritize bass for Subwoofer or treble for speakers, tailoring the listening experience to your acoustic preferences, thereby maximizing the overall performance and sound quality of your Audio System.

What advantages does Class-AB technology offer in the Audio System CO-70.4?

Class-AB technology in the CO-70.4 provides an excellent balance between efficiency and sound quality. This amplifier class combines the low distortion and high sound potential of Class-A amplifiers with the efficiency and power of Class-B amplifiers. This results in clear and detailed sound across the entire frequency range. This is especially advantageous for music lovers who value detailed sound dynamics while also improving energy efficiency. By using Class-AB technology, the CO-70.4 prevents thermal overloads and ensures long-lasting, reliable performance.

How is the input sensitivity set on the CO-70.4?

The input sensitivity of the CO-70.4 can be flexibly adjusted between 0.2 to 8 volts. This allows you to seamlessly connect the amplifier to various audio sources, whether it's a car radio or an external audio player. A correctly set input level is crucial to avoid distortion and to utilize the full range of power and dynamics of the audio signal. This wide range of input sensitivity ensures that the CO-70.4 can deliver optimal performance under various circumstances and sources without encountering adaptation issues.

What are the dimensions of the CO-70.4 and how does this affect installation?

The CO-70.4 has compact dimensions of only 280 x 47 x 171 mm, which greatly simplifies its installation in vehicles or other tight spaces. Despite its powerful technology, the slim design allows for discreet placement, often even under seats or in side panels. This size gives you the flexibility to install the amplifier in vehicles with limited space without having to compromise on performance. The thoughtful design is one of the highlights that makes the CO-70.4 significantly advantageous for installation in a variety of cars.

How does the automatic turn-on of the RCA high-level input work on the CO-70.4?

The RCA high-level input of the CO-70.4 features an automatic turn-on function that significantly enhances the user-friendliness of the amplifier. Once an audio signal is detected, the amplifier automatically turns on. This function eliminates the need for manual on and off switching and ensures that the amplifier is always ready for use as soon as the audio system is activated. Additionally, this automation also protects the devices from unnecessary strain and reduces power consumption by only turning on the amplifier when audio signals are present.

What options does the optional RTC provide in the CO-70.4?

The RTC (Remote Turn-On Control) in the CO-70.4 gives you the option to turn the amplifier on or off from a remote source. This function is particularly useful when the amplifier is installed in a hard-to-reach location or when you prefer simple control. The RTC connection can easily be paired with a variety of control devices, providing additional flexibility in your audio system. With the optional RTC, handling the amplifier becomes even more convenient, as it can facilitate integration into various audio-visual system landscapes.

Are there any tips for the best placement of the CO-70.4 in the car?

When placing the CO-70.4, it is important to choose a location that allows for good ventilation while also providing protection from moisture and direct sunlight. Due to its compact size of 280 x 47 x 171 mm, you can easily mount it under the car seats or in the trunk. Ensure a solid installation to avoid vibrations while driving. A central location in the vehicle can help minimize cable lengths and thus improve signal quality. By positioning it correctly, you maximize the performance and durability of the Amplifier.

Is the CO-70.4 compatible with common car brands?

The CO-70.4 is compatible with most common car brands and models due to its universal input sensitivity of 0.2 to 8 volts and its compact dimensions. This flexibility allows the Amplifier to be integrated into both small cars and larger vehicles. The easy installation and adjustment of power to the specific vehicle configuration are additional advantages that the CO-70.4 offers. The dimensions allow for a variety of installation options, making this Amplifier an excellent choice for many car owners who value personalized sound.

What are the features of the RCA high-level input on the CO-70.4?

The RCA high-level input of the CO-70.4 offers excellent customization options for different source devices. With its automatic power-on function, the Amplifier is activated as soon as an audio signal is detected, significantly simplifying operation. This feature is particularly useful in combination with modern car radios and other sources that may not be equipped with traditional low-level outputs. The high-level input makes the CO-70.4 a very versatile device that is compatible with various audio setup configurations, ensuring a seamless transition between different audio sources.

Manufacturer information/responsible person

Axel Förderer
Audio System Germany
Falltorstraße 6
76707 Hambrücken
Germany

Contact: info@audio-system.de

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