pultec circuit | Next Electronics

A simple three-band graphic equalizer circuit is constructed using a single op-amp IC, the LF351 (IC1), along with several passive components. The component values in this circuit are not highly critical, allowing for substitutions with nearby values that result in...

Audio Resonant Equalizer Circuit Design

This topic discusses a resonant equalizer, which is a distinct type of circuit compared to the standard audio equalizer, although both achieve similar outcomes. The key difference is that the frequency responses of both the high and low frequency equalizers...

Double five-band equalizer circuit

Figure 1-98 illustrates a double five-band equalizer circuit featuring a secondary connection. In this configuration, IC1 and IC14 serve as voltage amplifiers for each channel of the equalizer. The circuit also includes IC11, IC24, IC2, IC34, IC31, IC12, IC23, IC22,...

Arduino Vocal Effects Box

This Arduino-powered vocal effects box pitch shifts and distorts incoming audio signals to produce a wide variety of vocal effects. This project is an experiment with real-time digital signal processing using Arduino. It samples an incoming microphone signal at a...

3 band equalizer

A classic three-way tone control circuit that allows for the regulation of low, mid, and high frequencies of an acoustic signal. The boost/cut can be adjusted within a range of ± 18 dB/oct. The circuit operates on a supply voltage...

5 Band Equalizer Circuit using

Circuit LA3600 5 Band Equalizer Circuit Schematics. One type of tone control in audio electronics is the graphic equalizer. Graphic equalizers can be categorized into two types: bar and other configurations. The LA3600 circuit is a 5-band graphic equalizer designed to...

4 Band Equalizer schematic diagram

The following diagram illustrates a four-band blaster circuit. This blaster is utilized to enhance sound fidelity, emphasize specific instruments, eliminate unwanted noise, or create entirely new and distinct timbres. The four-band blaster circuit is designed to manipulate audio signals across four...

Strange EQ plot PULTEC build

A Drip Pultec V2 has been completed. Upon checking the EQ curves using SpectraFoo, an anomaly was observed. The curves for 20 Hz, 60 Hz, and 100 Hz appear as expected, but the 30 Hz curve shows irregularities. The Drip Pultec...

3 band equalizer circuit

This 3-band equalizer circuit is an active filter network designed to adjust bass, midrange, and treble audio frequencies. It utilizes the LM833 operational amplifier from National Semiconductors, which is known for its very low noise figure and wide frequency response. The...