I'm doubling it up right now. 18" subwoofer driver in an 8 cubic foot enclosure. The first box I ever made. 1/2 inch plywood right now.
Tags: pyle 18 inch subwoofer pl1890bl big huge sub movie theater cinema low bass tuning frequency hertz blue wave model loudspeaker enclosure home made box bass reflex port
One of the 820 feet Rugby Radio Station masts from the old VLF radio station. 8 were demolished out of 12 at one time in 2004; then the remaining four were demolished in 2007. Many years ago an ice storm heavily damaged them.
Tags: aerial helicopter surround sound thx test antenna transmitter broadcast tower tall 360 degree view skyworks 1923 verly low frequency station ltd limited
Powered by an amp not a headphone variable line level output connection. I just put RCA 30 watt six ohm mid range speakers in an old pair of earmuffs that had a large hollow area. All I did was remove the foam piece and cut the inside rim a little to fit the speakers which I just screwed into the plastic. These are probably the loudest headphones ever made.
Tags: very loud headphones earmuffs powerful loudest ear muffs homemade midrange high powered speaker line level blue noise protectors morsafe loudest headphones ever world's loudest
Video response to part one of this. Located off thistle street, Dead Frog Hollow in Hall/Penn Yan New York. In the middle of a field with no access road. It seems to be a weather tower; it only has anemometers (wind speed measurement) on it. It has stays at six different levels (24 total) but they are all very loose; with enough slack to make waves in them and to move the stake holding them in the ground around.
Tags: guywires radio tower hall new york dead frog hollow thistle street field weather mast anemometer wind stays loose bending bent tower bent
It says 90 degrees and sunny and it is Winter time in New York... Later it said different things for the two Alfred NY weathers when I added a second one. The Video response.
Tags: igoogle personalized page weather app new york 14802 alfred ny gorham new york geneva conditions forecast error glitch 14456 14461
All infrasonic frequencies shake my house as my box is tuned to 15 Hertz; which is TOO low; yes it is quite possible to be too low. AT 45 Hertz, I get MORE excursion than 15 Hertz because it is so high above the tuning frequency that it messes it all up. It's terribly distorted at frequencies over 30 Hertz.
Tags: bass subwofer 18 inch subwoofer pyle blue wave big speaker pl1890bl closet carpet soundproof door bass test woofer excursion test shake rattle vibration camera
This tower is about 200 feet high and has no access road or building; and the wires going up it are small; I think it is only for the five anemometers that are on it. It is moderately bent and EVERY guy wire on it is loose; extremely loose; basically just hanging by their own weight. So loose even that the stakes holding the guys to the ground had slack in them. It was not a lattice tower but rather a hollow aluminum pole; located in Dead Frog Hollow on Thistle Street in Penn Yan, New York....
Tags: hall new york antenna pole aluminum bent bending mast radio tower anemometer hall new york penn yan field weather tower radio tower
The speaker in this video is moving at full tilt excursion with a signal generator putting out a clean 15 Hertz bass tone. Look how my finger doesn't even appear to be touching the speaker yet you can hear it knocking. Also, observe how wildly the stopper bounces around and off the woofer as if by magic. The only speaker motion you can see is the effect the stopper has when it hits the cone.
Tags: subwoofer trick speaker effect camera effect hertz subwoofer loudspeaker camera framerate optical illusion trick special effect same frequency
