Analog Delay from Russia

[peterv999]

I'm wondering why there is no compressor/expander here? Even with this wonderful single BBD design that is!! The compressor/expander could be used to compress and not expand with a 1:2 ratio. This would allow for the echotrail  to be extended much more and even would emphasis sustain of the guitar. Just tricks....

-Peter

[Valentinych]

BBD MN3005 has a good dynamic range (S/N ~= 75dB). With the right supply voltage (15V), the maximum level of input signal Vi >= 1V. Actually this value even more to ~1,4V.  I deliberately refused to use compressor/expander (compander?) – it "замыливает" sound (don't know how to say it in English). But applied the regulator input level (P1 on my diagram) and a peak level indicator (OP1b and LED1). Remember, as in old tapes? This proved to be very convenient.
A similar decision I am using in my rever on BBD MN3011. Only in peak indicator I applied green-red LED. Was very well – at a normal level of input signal indicator lights green, while increasing the level above the maximum color indicator becomes first yellow then red.

[Valentinych]

If someone wants to try this project, can share a PCB in the Sprint-layout 5.0.

[GodSaveMetal]

If someone wants to try this project, can share a PCB in the Sprint-layout 5.0.

I saw this, wow man I have sprint 6 you please post all you have of this or others in SPRINT??? please man! thanks a lot!