Suppliers of Pro-Audio Equipment

Graphic equalizers consist of 15 or 30 band-pass filters, each corresponding to a 1/3 octave frequency. Traditional equalizer designs utilize standard discrete components to implement these band-pass filters. The Apex GX and PE series have demonstrated superior performance by employing hybrid circuits that utilize Dynamic Laser Trimming (DLT) technology.

Graphic equalizers play a crucial role in audio signal processing by allowing users to adjust the amplitude of specific frequency bands, thereby modifying the tonal balance of the sound. The architecture of a graphic equalizer typically involves a series of band-pass filters, each tuned to a specific frequency range. In a standard configuration, these filters are designed to operate within 1/3 octave frequency bands, resulting in either 15 or 30 adjustable bands.

The conventional approach to constructing these filters involves the use of discrete components such as resistors, capacitors, and operational amplifiers. While this method is effective, it can lead to variations in performance due to component tolerances and environmental factors. Each filter's response can be affected by the precision of the components used, which may result in less-than-ideal equalization outcomes.

In contrast, the Apex GX and PE series incorporate advanced hybrid circuits that leverage Dynamic Laser Trimming (DLT) technology. DLT is a precision adjustment technique that uses laser trimming to fine-tune the resistance values in the circuit. This process allows for high accuracy and consistency in filter performance, significantly reducing the effects of component tolerances. As a result, the hybrid circuits in these models provide enhanced frequency response and improved overall sound quality.

The implementation of DLT technology in graphic equalizers not only optimizes the performance of each band-pass filter but also contributes to the reliability and longevity of the device. This innovation represents a significant advancement in the field of audio engineering, allowing for more precise control over sound reproduction and enabling users to achieve their desired audio characteristics with greater accuracy.Graphic equalisers are made of 15 or 30 band-pass filters, one for each 1/3 octave frequency. Conventional equaliser designs use standard discrete components to realise these band-pass filters. Apex GX- and PE- series achieved far better results by using hybrid circuits applying Dynamic Laser Trimming (DLT) technology. 🔗 External reference