Christopher NullTechHive

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Christopher Null is a veteran technology and business journalist. He contributes regularly to PC World and Wired, and is a technology columnist for Executive Travel magazine.

Tesla coil

Cutting the final cord: How wireless power and wireless charging works

We routinely stream music and video through the air without wires. We’ll soon be able to do the same with electricity.

Onkyo LS-B50

Onkyo LS-B50 sound bar review: An underwhelming home-theater effort

Don’t be fooled by its muscular appearance, this entry-level speaker system is a 98-pound weakling both in terms of features and performance.

color temperature

How to optimize your home lighting design based on color temperature

Once you understand what color temperature is and why it matters, you can choose the right types of light bulbs to improve the quality of your life at home.

oovoo logo primary

5 ooVoo problems even more annoying than the ads

The free video call service has its hangups, five of which we tackle here.

thinkstock 178637695

Building a better sound bar: TV manufacturers take on speaker builders

Do speakers manufacturers build better sound bars than TV manufacturers? We pit three companies from each camp against each other.

sony htct770

Sony HT-CT770 2.1 Sound Bar w/Wireless Subwoofer review: This sleek speaker delivers the goods

Don't let its relatively small size foo you: This sound bar pumps out big sound

denon dht s514

Denon DHT-S514 sound bar review: A disappointing effort from a noted speaker manufacturer

We've seen some fine audio products from Denon; unfortunately, this isn't one of them.

vizio s5451

Vizio S5451w-C2 54" 5.1 Sound Bar System review: A genuine 5.1-channel audio system

This sound bar delivers everything you big-screen TV needs, except for high-res audio support.

polk audio magnifi

Polk Audio MagniFi Voice Optimizing Wireless Soundbar review: Why no HDMI?

Staying within a $400 budget shouldn't force you to sacrifice HDMI connectivity.

sharp ht  sb602 3ql

Sharp HT-SB602 2.1 Channel Slim Sound Bar review: This humongous speaker delivers big value

This sound bar can fill a large room with great-sounding audio.

yamaha yas 203

Yamaha YAS-203 Sound Bar with Wireless Subwoofer review: Great sound, but light on features

This sound bar has a great price/performance ratio, but it lacks a number of important features.

google hangouts primary

The top 5 reasons why Google Hangouts never works

The right browser, the right app, the right plug-in...or the wrong one...we'll help you sort out the worst hangups of Hangouts.

skype logo open graph

Skype fails: 5 of the worst problems and how to fix them

Admit it: You've cursed at Skype. We all have. These tips will save your breath--and maybe save your meeting.

Guardzilla

Guardzilla review: This dirt-cheap home-security camera has some growing to do

If you’re looking for basic protection for your small apartment or home, this wireless camera has only minor flaws.

videoconferencing stock image oct 2014

Free videoconferencing tools: 5 creative ways they can help you get things done

Skype, GoToMeeting, and their ilk need not sit idly between meetings. Use the services to collaborate, train employees and more.