CassetteMaster | Sound Powered Telephones with Luke and Ricky Conversing and Having Fun @CassetteMaster | Uploaded 5 years ago | Updated 1 hour ago
LUKE PRESENTS again, with LUKE filming.
Here, I hook the two sound-powered telephones together, strung between two rooms, and me and Luke talk. Before that, we goofily set everything up!
I apologize, but for the sound-powered conversation, you need to turn the volume WAY up. Then back down again after the conversation is over.
These phones use no batteries. No amplifiers, not even a carbon microphone is used! Instead, it is just two electromagnetic transducers in each. Balanced-armature high-impedance transducers wired in parallel. Both the microphone and earpiece are identical transducers. Only two-conductor wire is needed to talk.
Sound recorded during the conversation section is picked up straight from the telephone using a telephone pickup coil. Although the sound picked up by the pickup coil was incredibly weak (much weaker than from a regular Western Electric or similar handset), it was a decent-enough, easy to hear volume in person, amazing for something entirely powered by the human vocal tract.
This video shows some of the weird side of my personality, which comes out big time when spending time with people I get along with so well, and with similar personalities such as my dear friend Luke!!!
LUKE PRESENTS again, with LUKE filming.
Here, I hook the two sound-powered telephones together, strung between two rooms, and me and Luke talk. Before that, we goofily set everything up!
I apologize, but for the sound-powered conversation, you need to turn the volume WAY up. Then back down again after the conversation is over.
These phones use no batteries. No amplifiers, not even a carbon microphone is used! Instead, it is just two electromagnetic transducers in each. Balanced-armature high-impedance transducers wired in parallel. Both the microphone and earpiece are identical transducers. Only two-conductor wire is needed to talk.
Sound recorded during the conversation section is picked up straight from the telephone using a telephone pickup coil. Although the sound picked up by the pickup coil was incredibly weak (much weaker than from a regular Western Electric or similar handset), it was a decent-enough, easy to hear volume in person, amazing for something entirely powered by the human vocal tract.
This video shows some of the weird side of my personality, which comes out big time when spending time with people I get along with so well, and with similar personalities such as my dear friend Luke!!!
