This stereo
digital echo project is circuits pioneering in the use of the old echo circuit before using the IC-BBD to the digital system. By using a digital echo circuit IC designed especially for the heart to work.
This circuit is designed as a stereo system, to make it easy, and easy to-use applications, with your amplifier, followed circuit below.
The left channel input signal is entered pass through capacitor C1 to base pin of transistor Q1(2SC1815). Which is an input amplifier has a sufficient strength that enter to other next circuit section.
VR1 use to adjusts the input signal that is input to delay circuit has high strength. VR4 used to fine frequency of clock signal. If you fine frequency to lower, the voice repeated will distance a range but high frequency Audio is faster iterative, stacked, like an echo signal.
Circuit Stereo Digital KT5211P
The output from IC1 at pin 34 will be through to C18 and VR5 to base pin of
transistor Q3 for mixed with the direct signal has output is digital echo as you need.
The some output from IC1 will be pass to R22 and VR1 feed back to input of IC1 makes has The sound duplicate If we fine VR1 to have a lot of feedback signal will have many repetitive sound. Be very much careful not to adjust, so that the oscillation.