Doepfer

Hi group,

working with the a188 bbd, i'm kind of hand-tied by the fact that i
need a filter (of which i only have two) to remove the clock signal
from the echoes produced. 

so i need to buy another one, or do i ? is there an easy way to build
a fixed freq lpf ? it's easy enough on the guitar, i.e. a passive
circuit, but what's the score with all this active circuitry ?

any help or advice greatly appreciated.

stu