No, you aren’t looking at a 30 year old Teac graphic equalizer that somebody modified. The MWA-002 Network Music Player created by [GuzziGuy] is built entirely from new components, and easily ...

The main component of this 3 band graphic equalizer is LM833 produced by National Semiconductor. LM833 has a very low noise, and a band / amplifier of 15MHz and a rise speed of 7V/s. The cut points ...

The five band graphic equalizer described here was designed to connect between two video recorders, so that the frequency response can be corrected somewhat.

One of the products was a system comprising a 200-W amplifier, a tape deck, a turntable, and a 10-band graphics equalizer. The equalizer split the audio-frequency range of 20 Hz to 20 kHz into 10 ...