Pt2399 Delay Schematic. Pt2399 echo and reverb basics the pt2399 is an echo processor ic manufactured by the princeton technology group. After the desired delay time the contents of the memory are converted back into an analogue signal.
The pt2399 is a cmos echo delay processor developed by princeton technology corp. The second schematic princeton has on their datasheet is the pt2399 surround delay application circuit. The pt2399 basic echo circuit is the one where the delayed output is fed back to the input to produce echoes.
The second advantage of the pt2399 is the cost.
The neptune differs from its predecessor in a few key ways however. The second schematic princeton has on their datasheet is the pt2399 surround delay application circuit. The second advantage of the pt2399 is the cost. The neptune delay is a pt2399 based digital delay with footswitch controlled modulation.