You could use a simple transformer to break any ground loop between the rec= eiver and the microphone input. Just a thought. > On Aug 20, 2018, at 11:56 AM, Neil wrote: >=20 > Hi all, >=20 > I want to take the output of a baby monitor receiver (which has a small=20 > built-in speaker), and send the output to the input of a device that=20 > uses and electret/condenser mic (a Velleman MK171 voice changer),=20 > instead of the speaker. > I can use a votlage divider to attenuate the signal, but what would I=20 > need to do about the impedance to minimize distortion? >=20 > Cheers, > -Neil. >=20 > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist Just my $0.02, Jean-Paul N1JPL --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .