Tips

A recent post to the http://www.hackint0sh.org/news/394>hackint0sh.org forum reveals that Apple has included GPS hardware in all iPhones shipped worldwide even in countries that don't allow GPS. We previously reported on missing GPS functionality in Egypt here. According to the Hackint0sh post:

"Hurray for everyone who lives in a country GPS is diabled on the 3G. Our user were able to unlock the GPS for crippled devices in Egypt an other countries. Other than stated by Apple, GPS is NOT left out at factory and can easily be enabled."

The … Read more

Though the iPhone offers one of the best Mobile Web browsers around, surfing through full HTML pages can be a little tedious if you have a slow connection. So for those Goldilocks moments when a full HTML site is too much and a WAP site is just not enough, there's the new CNET iPhone experience.

Optimized for the iPhone classic and the iPhone 3G, the CNET iPhone experience offers all the content you'd find on the regular site, including product reviews, stories, and blogs from CNET News and Crave and videos from CNET TV. But unlike the standard … Read more

Let's face it, setting up a home theater with five speakers and a subwoofer is a hassle.

Home-theater-in-a-box systems ease the pain somewhat, but you still have to run wires to five speakers and a subwoofer. Single-speaker sound bar systems? Sure, they eliminate the tangle of wires, but they're just glorified stereo bars and never really sound all that good. You can get much better sound from a decent set of stereo speakers.

You could put together a much better sounding system with Integra's DSR-4.8 DVD/AV receiver ($600) and a nice pair of speakers and possibly a subwoofer. It's a stereo receiver with 50 watts per channel with a built-in DVD/DVD-Audio/SACD player; video connectivity includes a 1080p HDMI output, one HDMI input, and two composite inputs. (You can multiply the usefulness of that single HDMI input by adding an inexpensive HDMI switcher that multiplies the number of available outputs.)

Let's compare and contrast an Integra DSR-4.8 based system with Yamaha's YSP-4000 single-speaker surround system ($1,800). The Yamaha is self-powered so it doesn't need an AV receiver, but it doesn't make much bass. So, you'll need to add a subwoofer, like Yamaha's YST-FSW150 ($280) and a DVD or Blu-ray player.

Fifty watts may not seem like much, but Integra components sound pretty good; pair the DSR-4.8 with efficient speakers you'd get a big sound. Klipsch's RB-61 bookshelf speakers ($499/pair) would be ideal and make better and more powerful bass than the YSP-4000, so some of you won't have to get a sub. But if you're thinking about going whole hog, I like Klipsch's Sub-12 subwoofer ($500). That's all together a $1,600 MSRP system, so it's at least $500 less expensive than the Yamaha system.

The Integra/Klipsch system would be way, way more dynamic, with vastly greater clarity for movies and music (single-speaker systems never quite sound right for music). To be fair, the Yamaha big claim to fame is its ability to produce a facsimile of surround sound from the single speaker, and it's the best of its type (I've reviewed a ton of single-speaker surround systems for CNET--both units with built-in video connectivity and those without--so I should know). The Integra/Klipsch is strictly stereo, but it'll be really good stereo. Big and wide, with a great sense of depth and spatiality.… Read more

What are the chances you'll actually watch a DVD/Blu-ray more than once or twice?

I know a lot of folks who never watch most of the discs they buy. They've already seen the film when it was in theaters, and enjoyed it, so they buy it. Sure, little kiddies can watch a flick over and over again, but if you're over 12 it's a rare film that bears repeated viewing.

Box sets are even worse. OK, it's one thing to buy a three-disc box like Law & Order - The Second Year, but who'… Read more

Listen, if you're buying speakers, the best thing to do is listen to them. If you can't, you'll learn a lot perusing specifications.

Online shoppers need the most info, but even brick-and-mortar buyers can predict quite a lot about a prospective speaker's performance and system compatibility by looking at the numbers. Tech talk gets you woozy? No problem, the main points of interest would be the dimensions of the speaker and how much the thing weighs.

Hint: bigger and heavier speakers almost always sound better than small, lightweight ones.

So far, so good, but woofer size also provides clues about how much bass a speaker will produce. Bigger woofers make more bass than smaller ones, but the cabinet's size is almost as important a factor as woofer size in determining bass quality/quantity. Multiple woofers may look impressive, but they're less reliable predictors of bass oomph; we've tested lots of skinny speakers with two, three, four, or more drivers that didn't make much bass. The cabinets were too damned small, four 3-inch woofers don't make as much bass as one 6-inch woofer in a larger box.

You might hope the frequency response specification, "38 Hertz -- 22,000 Hertz," would predict how much bass the speaker would make. The first part of that spec, "38 Hertz" refers to the bass output--the lower the number--the deeper the bass. Ah, but since there wasn't any reference to the tolerance of the spec, it's just about useless. Some manufacturers include a "+/-" after the frequency response number, something like 38 Hertz - 22,000 Hertz +/- 3 dB, and that helps a bit. Any speaker that reaches 50 Hz or lower can be considered "full range" and doesn't necessarily need to be partnered with a subwoofer--for music. Multichannel (5.1, 6.1, 7.1) home Theater applications almost always require subwoofers.

I have less to say about tweeters, other than to recommend buying speakers with tweeters; a fair number of pricey "sound bar" speakers are tweeterless. That's not to say they will sound bad, just not as detailed and clear as speakers with decent tweeters. … Read more

Stereophile magazine editor John Atkinson's recent article, "Getting the best from your loudspeakers," provides gobs of useful information.

Atkinson's observation that "inexpensive speakers, optimally set up, may well outperform more expensive models just plonked down willy-nilly" is absolutely true. Proper speaker placement is crucial to getting the best sound out of your speakers.

The article explains how room acoustics affect the sound of speakers, and it's definitely a complex relationship. You won't need a microphone or any technical skill to get the job done, but an Atkinson-produced Stereophile test CD can be a big help when fine-tuning speaker placement.

Perhaps his most important bit of advice comes early on: "Entire books have been written about the relationship between loudspeakers and room acoustics, but the starting point for any successful setup is to position the two speakers and your listening chair as the pieces of an equilateral triangle; that is, the speakers are each as far away from you as they are from each other."… Read more

The audiophile lexicon goes way, way back, at least to the early 1950s hi-fi craze. Here's a place to get a grip on it.

The Audiophile Wiki was initiated by PS Audio's Paul McGowan to help answer questions about audio.

"For years, I have been on a personal crusade to put whatever effort I could into helping raise awareness of our industry," McGowan said. "I have spent hundreds (probably thousands) of hours answering questions about everything from how to connect a loudspeaker to how a transistor works, all in service to PS Audio customers and … Read more

Here's a thought: instead of wading through dozens of ringtone-making apps to find one suited to your iPhone, why not try--what else?--iTunes for Windows and Mac?

In this Insider Secrets video, CNET Editor Brian Tong gives you the lowdown on producing ringtones for your Apple phone using nothing but Apple's own free music library and player.

The warnings aren't exactly subtle. The very first page of nearly every manual threatens, in large type: "Caution. Risk of electrical shock" and "Heed all warnings."

These cautions are used without any sense of proportion or logic. For example, A/V receiver owners are advised: "To reduce the risk of fire or electric shock do not expose this appliance to snow, rain, dripping or moisture." So forget about poolside installation of your new 200 watt per channel receiver.

I liked this one, found on a single speaker surround system manual, "Do not touch hot spots during and immediately after use." I guess these warnings are used by the company's lawyers in cases of product liability, but do they work?

"Ladies and gentlemen of the jury, I think we have proved beyond reasonable doubt that the plaintiff, Mr. Jones, willfully touched his Acme Z1000 speaker's hot spots, which unfortunately resulted in the loss of his pinky finger. The defense rests."

Here's one from an A/V receiver manual: "Use only with the cart, stand, tripod, bracket or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus to avoid injury from tip-over." Huh? So in other words, by placing your new receiver on unauthorized furniture, you're at some risk.

Then again, it doesn't say anything about dropping the 42-pound receiver on your foot when placing the receiver on a cart, stand, tripod, bracket, or table specified by the manufacturer. So there's a loophole. Let the lawsuits begin.… Read more