emp

High-end sound system, for half the price

High-end audio can be expensive, but there are deals to be had.

Take a gander at EMP Tek's nifty Limited Edition System that goes for $595. It's a three-piece affair with a stereo tube integrated amplifier and a pair of sweet-looking bookshelf speakers.

Call me jaded, but I've heard a bunch of iPod speaker systems in that price range that sounded like glorified boom boxes. And since most of them are single-box systems they don't do much in the way of stereo separation. Yes, they make bass, but it's always bloated, thick, and boomy bass. Impressive to some at first, but its not what you'd call hi-fi sound. These iPod systems' power amp wattage is rarely specified or it's wildly exaggerated. For $600 you should be able to get a decent sounding system, and there's no such thing as a decent sounding iPod speaker for that kind of money.

The EMP Tek Limited Edition System is something else again. Its 40-watt-per-channel rating seems about right. Small enough to fit on a desktop, it's just 6.6 inches wide, 4.5 high, and 10.25 deep, and the amp has three inputs. Two are minijacks, so you can plug your iPod/MP3 player in, and there's a stereo RCA input you might use to pump the sound of your DVD or Blu-ray player through the system. The amp's two tubes are backlit with blue LEDs, which look extra cool. The amp weighs 8 pounds.… Read more

DIY 'e-bombs' a threat to airliners

Box cutters, high flying geese and now this: a DIY electromagnetic pulse (EMP) weapon that can bring down a plane with a single microwave radio pulse blasted from the ground or even from the next seat over, according to experts.

The world's major military powers have tinkered with EMP warheads that broadcast radio-frequency shockwaves of hundreds of thousands of volts per meter. But now, any crackpot can build one of these "e-bombs" with low-cost equipment purchased online.

In analyzing electromagnetic weapons currently in development, the International Institute for Counter-Terrorism in Herzliya, Israel, discovered that there is plenty … Read more

"Novel" receiver to protect electronics against electromagnetic pulse attack

A Malibu, CA company is developing a new system to protect military communication gear from high-power microwave weapons, nuclear blast generated electromagnetic pulse (EMP) and the mythic, directed-energy "e-bomb".

One nuclear airburst can unleash the EMP equivalent to 100,000 volts per square centimeter, frying computer, radar and communication equipment within hundreds of miles. It's possible to protect electronic circuitry from EMP with something called a Faraday cage, or covering it up with 1 inch mesh, grounded, copper chicken wire as they've done with FEMA headquarters; problem is-nothing gets out either, which defeats the purpose when … Read more

Experience Music Project embraces iPods

I had a charter family membership Seattle's Experience Music Project or EMP, which opened in 2000. But after a couple years, I gave it up. The exhibits didn't change enough to warrant a lot of repeat visits, our periodic out-of-town guests had all been at least once, and the promise of early alerts about live shows at the museum never seemed to come through. (The one show I really wanted to see, the Television reunion in 2001, was sold out before I was ever informed about it.)

With a teenaged niece in town and my daughter just getting … Read more