Pt2399 Echo Reverb Effects Schematic Circuit. I believe what they mean by surround is reverb which is actually sort of achievable more on this later in the mods section if you set your circuit up right. After redrawing the basic echo circuit we can now clearly see that the power is fed through pin 1 and the analogue ground.
Circuit some values are slightly different on the breadboard. The pt2399 used by me can be used to create other sound effects such as delay reverb chorus flanger stereo expander. There is a bit of background white noise that is related to one of the pt2399 chips.
Furthermore the level of attenuation in the feedback loop is set by the repeats control potentiometer.
By using 100k resistor the input impedance of this pt2399 reverb circuit is around 50k determined by the r3 in parallel with r26 r28 series. There is a bit of background white noise that is related to one of the pt2399 chips. Pt2399 echo reverb effects schematic circuit brief description. I believe what they mean by surround is reverb which is actually sort of achievable more on this later in the mods section if you set your circuit up right.
