50 Watt Amplifier ICL8063

Description: This is a handy, easy to build general purpose 50 watt amp. The amp has an input for a radio, TV, stereo or other line level device. It also has a phono input for a record player, guitar, microphone or other un-amplified source. With the addition of a low pass filter at the input, it makes a great amp for a small subwoofer. More: 1. I know I skipped R4. That is not a problem 2. Distortion is less than 0.1% up to 100HZ and increases to about 1% at 20kHz. 3. I haven't been able to find anyone who sells a suitable T1. You can always use two 24V 5A units in series. If you are bu

This general-purpose 50-watt amplifier is designed to accommodate various audio sources, making it versatile for home audio applications. The amplifier features both line-level inputs for devices such as radios, TVs, and stereo systems, as well as a dedicated phono input that caters to unamplified sources like record players, guitars, and microphones.

The circuit can be enhanced with the integration of a low-pass filter at the input stage, which is particularly beneficial for subwoofer applications, ensuring that only the desired low-frequency signals are amplified. This filter can be implemented using passive components such as resistors and capacitors, allowing for tailored frequency response suitable for subwoofer performance.

The amplifier's performance metrics indicate a low total harmonic distortion (THD) of less than 0.1% at frequencies up to 100 Hz, which is excellent for maintaining audio fidelity. However, as the frequency approaches 20 kHz, the distortion level increases to approximately 1%, which is common in many audio amplifiers and may be acceptable depending on the application.

Regarding power supply considerations, the circuit specifies the use of a transformer (T1) to provide the necessary voltage and current levels for operation. If a suitable transformer is unavailable, an alternative solution is to connect two 24V, 5A power supplies in series, which would effectively provide the required voltage for the amplifier's operation.

Overall, this amplifier design presents a straightforward and effective solution for audio amplification needs, with the flexibility to adapt to various input sources and applications.This is a handy, easy to build general purpose 50 watt amp. The amp has an input for a radio, TV, stereo or other line level device. It also has a phono input for a record player, guitar, microphone or other un-amplified source. With the addition of a low pass filter at the input, it makes a great amp for a small subwoofer. 1. I know I skipped R4. That is not a problem :-) 2. Distortion is less than 0.1% up to 100HZ and increases to about 1% at 20kHz. 3. I haven't been able to find anyone who sells a suitable T1. You can always use two 24V 5A units in series. If you are bu