Preamplifier + tone control circuit based TDA1524A

Preamplifier and tone control circuit based on the TDA1524A. The tone control circuit module is included in this preamplifier circuit, allowing for direct connection of the output channels to a stereo power audio amplifier circuit. This RIAA stereo preamplifier utilizes only conventional components, which can be easily sourced from electronics stores. The circuit is intended for use with a vinyl turntable equipped with analog outputs (RCA). It serves the dual function of a preamplifier and RIAA equalization. The circuit supports a total of four speakers at 4 ohms and 40 watts powered by 12V, making it suitable for automotive applications. Total harmonic distortion is relatively high, around 10% at full power; however, at half power (20W), it is less than 2%. It is not designed for high-performance audio systems in vehicles. The integrated audio TDA8571J, designed for automotive applications, complements this 40W amplifier circuit, enhancing the sound of the car radio or providing connectivity.

The preamplifier and tone control circuit based on the TDA1524A is designed to function effectively in automotive audio systems, particularly for users who wish to incorporate vinyl turntables. The TDA1524A is a versatile integrated circuit that simplifies the implementation of audio signal processing, providing both amplification and tone control functionalities.

The circuit features a built-in tone control module, allowing users to adjust bass and treble frequencies to suit their preferences. This is particularly advantageous in car audio systems where acoustic conditions can vary significantly. The preamplifier stage boosts the low-level signals from the turntable, ensuring that the audio output is sufficiently strong for subsequent amplification stages.

The RIAA equalization is crucial for vinyl playback, as it compensates for the frequency response characteristics of vinyl records. This ensures that the music is reproduced accurately, preserving the original sound quality. The circuit's compatibility with standard RCA outputs allows for easy integration with various audio components.

With a power rating of 40 watts at 12 volts and the capability to drive four 4-ohm speakers, the circuit is well-suited for car audio applications. The relatively high total harmonic distortion (THD) at full power indicates that while the circuit may not be suitable for audiophile-grade systems, it is adequate for general listening purposes in a vehicle. The THD drops significantly when operating at lower power levels, which can enhance listening comfort without compromising audio quality.

The inclusion of the TDA8571J amplifier further extends the circuit's capabilities, allowing for enhanced sound reproduction from the car's radio or other audio sources. This combination of components provides a practical solution for those looking to upgrade their car audio systems with the warmth and character of vinyl playback. Overall, this preamplifier and tone control circuit represents a cost-effective and efficient option for automotive audio enthusiasts.Preamplifier + tone control circuit based TDA1524A. Tone control circuit module is included in this preamplifier circuit, so you can connect the output channels directly to stereo power audio amplifier circuit. ThisRIAA stereo preamplifier uses only conventional components, you can easily find components at electronics store.

The circuit is intend ed to be used with a vinyl turntable equipped with analog outputs (RCA). It provides the dual function of preamplifier and RIAA. This circuitprovidesa total of fourspeakers4 ohmsand40Wat12vpowered. It is thereforeidealfor usein the car. Totalharmonic distortionis rather high, about 10%at full power. Butwithhalf the powerrequirements(20W)is lessthan 2%. Anyway itis not intendedtohave ahigh performancesystemin the car. With theintegratedaudioTDA8571Jdesignedforautomotive applications, this 40w amplifier circuit can expandthe soundof the car radioorconnecta. 🔗 External reference