This device has a cast metal horn which improves the quality of the sound, and all you have to do is to slip the headphones on the inlet tubes of the horn and it is ready for use.
It consists of a pair of headphones and a variable resistance which have been calibrated.
It consists of a brass horn with a curve in it and in the bottom there is an adapter, or frame, with a set screw in it so that you can fit in one of your headphones and this is all there is to it.
If you want to add an amplifier tube then connect it to the posts instead of the headphones as described in the foregoing set.
The two headphones not only give a longer volume of sound than where a single one is used but there is a certain blended quality which results from one phone smoothing out the imperfections of the other.
This regenerative action of the battery current augments the original oscillations many times and hence produce sounds in the headphones that are many times greater than where the vacuum tube detector alone is used.
Jack sprang forward and snatched the headphones from the Inca's head.
As I was reading the news bulletin I suddenly became conscious of a regular ticking noise in the headphones I was wearing.
Anyway, he bought me a lovely pair of Telefunken headphones when the ship berthed at Constantinople (Istanbul) which I have to this day.
Broadcast receivers began to appear in the shops, either with headphones or large horn loudspeakers, but we never had one at home.
The English youth nodded, and yanked his own headphones off.
Their headphones being connected, Freddy Farmer had heard the orders at the same time.
The aircraft officer lifted his head, pressing his headphones tightly against his ears, as if to hear mores clearly.
Although the helmet restricted his peripheral vision, he still could hear clearly through headphones miked on the outside, although they did make the din of the hangar sound tinny and artificial.
Vance's headphones came alive as he heard the Russian.
Headphones and a mike gave him communications with the Shed direct, and the pushpots were balanced in groups, which cost efficiency but helped on control.
Brown's voice in the headphones said, "The rocket's cut acceleration.
The headphones said, "You will enter Earth's shadow in three minutes.
He heard a sound like a sob, and the headphones were silent.
Joe's headphones brought his explosive grunt when he suddenly saw the idea.
She started for it at four gravities acceleration, and Joe got his headphones to his ears and lay panting while he waited for the figures and information he had to have.
But it seemed millennia before the headphones said, staccato fashion: "You are on course and will reach speed in fourteen seconds.
Then Sally's voice sounded in the headphones Joe wore.
It's on the tape," Big Al replied, lifting off his headphones and scratching at his crew cut.
Armont unplugged the headphones from the radio, then turned up the volume, the better to overcome the rain and roar of surf.
He took off his headphonesand clamped them on to the phonograph that stood on a table near by.
He listened in for another moment then wonderingly took off the headphones while Herb grinned at him in triumph.
After a while, coming out of his dream, the old man began fumbling with the headphones as if he wanted to take them off, and Bob helped him.
Now, the surprising part of it all, and that which had caused the boys to proceed so cautiously, was the fact that the man wore headphones and was evidently receiving a message of some kind.
Had the radio boys not chanced to see the black-moustached man listening, with wireless headphones over his ears, the fact that the box contained a wireless receiving outfit might never have been discovered.
Finally the stammering voice ceased, and after they had waited several minutes longer to make sure that it would not resume, the boys took off their headphones and gazed at each other in utter bewilderment.
Frank smiled teasingly, as he folded the umbrella and pulled it back through the porthole, then laid off the headphones and began hauling in the ground wire.
Frank was at the porthole with his back turned and the headphones of Jack's ring-radio set clamped to his ears.
Keith slipped off the headphones and told Bowman what he had learned.
Then he hung the headphones up and turned to the bewildered Lance.
He pressed the button that deactivated the light, placed headphones on, dialed a few knobs on the console, and pressed "Play.
Zimbardo twirled, his eyes bulging, and flung the headphonesfrom him with all his force.
Cochrane wore headphones carrying what the communicator carried, as this broadcast went through an angled Dabney field relay system back to Lunar City and then to Earth.
But from each plastic helmet a six-inch antenna projected straight upward, and the microwaves of suit-talkies made a jumble of slightly metallic sounds in the headphones of each suit.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "headphones" in a variety of sentences. We hope that you will now be able to make sentences using this word.
