Monday, December 30, 2013

Kaidaer Bluetooth Speaker

Kaidaer bluetooth speaker
If you’re going to be sharing your music on the go with other people, you’ll want something that sounds better than your phone’s screechy speakerphone. The dock-based speaker is dead, especially since Apple replaced the 30-pin with the Lightning connection on the iPhone 5. Wired speakers are also becoming harder to find. Basically, wireless is your only option. But devices that use Sonos or Airplay are prohibitively expensive for most people whereas Bluetooth comes baked into virtually every modern tablet, phone, and computer. Unlike other wireless standards, Bluetooth is not platform-specific. It’s also easy to pair and is a hard connection to inadvertently break. Basically, it’s everything you need from a wireless streaming protocol. Unfortunately, it may lack some of the features you want.

Sound quality is Bluetooth’s Achilles’ heel. Make no mistake, you will lose some of the fidelity  that would otherwise be preserved if you connected via AirPlay or a 3.5mm headphone jack. But that probably won’t matter in most cases for a couple of reasons. First of which is the speaker itself. A portable speaker needs to be, well, portable. Otherwise what’s the point? However, size matters when it comes to sound. You’re simply not going to be able to get as much bass out of a 1-inch driver as you would from an 8-inch sub–or even a 3 inch driver for that matter. So even in the best case scenario, you’re going to lose a chunk of sound quality. The second reason has to do with the source material. Streaming services are quickly becoming the preferred method of listening to music but truth be told, often times their quality can’t even match what you buy on iTunes, let alone CDs or vinyl. For example, you won’t notice any drop in quality if you’re listening to music using Spotify’s “Normal” and recommended streaming rate of 96 kbit/s. It’s also worth noting that some new music is deliberately mixed to be cruddy so it’ll sound acceptable on cheap headphones. The third reason is that your phone belongs on your person, not on a tabletop with a speaker on it, too far to check your messages.

Basically, lossy songs played through small speakers can only sound so good, and you’ll hit the limitations of the source and speaker well before you notice the drawbacks of Bluetooth.
What makes a good portable speaker?

We’ve addressed sound already, but beyond that true portability is a must. A speaker is a luxury and almost never a necessity, so unless it’s small enough to throw in your bag or pocket without hesitation, it’ll probably spend more time on your desk than entertaining you and your friends. This was something the Jambox absolutely nailed when it first came out and it’s why it became so popular so quickly. And now, the Mini Jambox (just announced in September of 2013) hopes to build on this, by shrinking the speaker’s thickness down to less than an inch.

…unless it’s small enough to throw in your bag or pocket without hesitation, it’ll probably spend more time on your desk…
You’ll also want a substantial battery (at least six hours of playback), solid sound quality (at least compared to others in this size and price range), and simple pairing. If you need to read the instruction manual to set it up, it’s poorly designed. Most speakers, or any Bluetooth device, make the cut — the process is rarely more complicated than pressing the pairing button or holding down the power button, until it blinks blue or blue and red. When it shows up in your device’s Bluetooth list, you tap it to pair. From then on, it should automatically connect.

As far as less crucial features go, most speakers are able to double as a speakerphone for conversations. As with music playback, some give more vocal clarity than others. We found that most conversations through any speakers made the other person say, “Am I on speakerphone?” so using a phone in a typical manner usually wins out.

Another not so necessary feature is the ability to charge devices from the speaker’s battery. The problem with this is that even speakers that offer this feature don’t have huge batteries to begin with (typically under 1500mAh which is about one fully charged iPhone). Best case scenario, you wind up with a half-charged phone and half-charged speaker that each have only a couple hours of life left. You’re better off with a dedicated external battery so you don’t have to choose between tunes and battery life. Definitely not a must have feature.
How we decided

There are dozens of Bluetooth speakers out there, especially in the sub-$150 range (including the original Jambox, which has recently been selling for as low as $130), so we let reviewers like PC Magazine, Wired, iLounge, and CNET pick out the best ones, models that appeared at the upper-end of multiple reviews — this meant nothing less than a 3.5/5, B rating, or an 8/10. These professional reviews were our main sources, but if there weren’t many reviews on a promising looking model, we looked at reviews of previous versions of updated models. We also assembled a long list of potential candidates from the floor at CES numbering in the dozens, almost all of which wound up being busts.

After thoroughly reading all the reviews we could get our hands on, we arrived at about a half-dozen top competitors. We parsed these with stricter criteria such as higher overall ratings and recommendations from audiophiles. We then called in and personally tested those finalists by playing everything from concert guitar (thanks, Geoff Morrison) and bass-heavy house, each using a variety of source materials from lossless CD quality to 96 kbit/s streaming. To control for bias, we tested each speaker in the same room location and with varying numbers of bodies in the room.

With the overall sound quality rated, we evaluated the everyday usability of each model, which meant bringing them on plane trips, using them in multiple rooms with different size crowds, and timing both playback and standby times of the battery life. We also looked at ease of pairing and portability. When all was said and done, the choice was clear.
Our Pick

It’s so portable it fits in a jacket pocket, but the sound it produces has enough power to clearly fill a room…
Logitech’s UE Mini Boom works because it’s a speaker that you’ll actually use. It’s so portable it fits in a jacket pocket, but the sound it produces has enough power to clearly fill a room and preserve the most important aspects of the song being played. On top of that, despite retailing for substantially less than the original Jambox, pretty much every reviewer agrees that it performs better.

As for specific numbers, the UE puts out 86 dB of sound from two 1.5-inch drivers, about equivalent to standing near a busy street and just beyond the 85 dB threshold at which hearing damage can start to set in–i.e. more than enough to fill a small room. It’s 4.4 inches wide, 2.6 inches deep and 2.4 inches high, approximately the size of either a can of food or four iPhones stacked on top of each other. It weighs a little over half a pound (Logitech’s site has it at 301 g or 0.7 pounds; when I weighed it myself, it came out to 299 g). With the speaker about four feet away from you, the UE works as a speakerphone with boardroom-ready clarity. The battery gives an astounding nine hours of playback, just shy of the manufacturer’s claimed ten hours and well north of the 6 hours you’d typically expect from one of these things.

The UE’s build quality is another highlight. Wrapping around its metal speaker grill is a rubberized shell feels like it can take a beating and adds traction to keep the speaker set on most surfaces. It also feels satisfyingly heavy when you pick it up in the way that most quality electronics tend to feel. (Think of an iPhone 4 versus its plasticky Android peers.) The UE also comes in several color combinations to fit your style.

The controls sit on the top and are pretty much idiotproof: pair, volume up, volume down. There’s everything you need and nothing you don’t. On the back, there’s a 3.5 mm input jack, a micro-USB port for charging and a sliding on/off switch. After I’d paired it with a phone, which took less than ten seconds, linking it back up to my iPhone 5 took less than three seconds on average. And it never failed, whether we turned the speaker on before the phone’s Bluetooth or turned on the speaker with the phone’s connection already on.

Even better, the sound quality–considering its size–was every bit as impressive as the reviewers made it out to be. Treble comes through cleanly, classical strings have their range preserved and the bass, while not bowel-loosening, transmits well enough to give hip hop and DJ sets enough punch to catch the beat. Above all, however, the UE’s ability to play at high volume without sounding fuzzy or distorted makes it an exceptional specimen in the sub-$100 price range. This was most clearly demonstrated by its ability to fill a room with rock and roll loud enough to get all 6 people’s heads bobbing to the beat.

And don’t forget, all that sound sits inside something that fits in a jacket’s breast pocket. Crazy.

The UE also gets points from us for charging via micro-USB. Since cheap Bluetooth speakers are so portable, especially the UE, you’ll want to bring it on trips to pump sound into your hotel room. Since micro-USB charges Kindles, the Nexus 7, most Android phones and a handful of other gadgets, adding the UE means you still only need to take one cable for all those devices when traveling. Plus then the cable is easy to replace should you lose it on accident. Another bonus of micro-USB charging is that you don’t need a fat, multiple-outlet-hogging AC adapter; any old USB port will do. It makes AC-adapter-dependent models look outdated by comparison. It’s a joy to be able to travel with only an Apple Lightning cable, my MacBook Air’s plug, and a micro-USB for my Kindle and the UE.

One helpful feature we found in our own testing that wasn’t specifically mentioned in many reviews was the fact that the UE has indicator sounds in addition to the blinking Morse code lights found on most other models. It has a specific chime for when it turns on, successfully pairs, and when it hits the maximum or minimum volume. It also will make a sound when there’s been no music or user activity for 15 minutes and it’s about to shut down to save battery. It’s a small feature that comes in handy to tell you when you can start playing music or make a speakerphone call.
Who else likes it?

Reviewers universally applaud the UE’s sound quality and value.

Ryan Waniata of DigitalTrends says, “At this size and price point, you’ll have a very difficult time finding a speaker that can outperform the UE Mini Boom. … the Mini Boom pulls off some of the most powerful sound we’ve heard from a speaker of its size, out-blasting most competing speakers we’ve evaluated.” They gave the Mini Boom an 8.5/10 and an Editors’ Choice designation.

At BetaNews, Ryan Fagioli said, “Amazingly, the sound is very balanced and without compromise –highs, mids and lows are all well represented. In other words, regardless of the genre, music sounds great.” He praised its easy connection to his Chromebook: “Pairing was a breeze here too. Bluetooth audio on ChromeOS is a fairly new feature but it works flawlessly.”

Comparing UE Mini Booms to the larger UE Boom, our pick for best rugged Bluetooth speaker, Rob LeFabvre at Cult of Mac says, “There’s got to be some fancy sound engineering inside these rugged little speakers to produce such a well-balanced sound in such a minuscule package. While not as ultimately loud as the UE Boom cylinder, the Mini Booms in concert are easily able to fill a normal sized room. They do fairly well outside, as well, letting me keep a recent outside BBQ well supplied with music at a livable volume.”
It’s not perfect

CNET wasn’t quite as enthusiastic. They gave its predecessor, the UE Mini Boombox, a solid-but-not-great 3.5 out of 5 stars. (They haven’t updated their review for the new Mini Boom, ostensibly because of the small number of noticeable changes.) Their main complaint was the lack of bass: “The truth is that these little speakers aren’t really designed to be cranked up and belt out big booming sound. They can play loud for their size and fill a small room with sound, but they tend to sound best at 6-8 on the volume scale rather than at 10. They also offer virtually no stereo separation since their internal drivers are crammed so close together.”

We agree with them. But at this price, you have to limit expectations for audio, and it doesn’t look like CNET wove that into their assessment. Save for this chunky, AA-powered Creative that they reviewed in 2010, CNET doesn’t have any sub-$150 Bluetooth speakers with more than 3.5 stars. We think their assessment, though overall flattering to the UE, doesn’t do much to invalidate other critics’ collective praise for the speaker.

Jeremy Horwitz at iLounge gave the Mini Boom a solid B+ rating, saying that UE’s claims of an expanded, 50-foot range are just that—claims. “Although Logitech promises Bluetooth streaming will work at up to 50-foot distances, we found that it only worked reliably at Bluetooth’s typical 33-foot range.” After that, they found dropouts and stuttering. Our experience was similar. While performance was robust through walls and in my apartment up to 25 feet, anything beyond that was met by intermittent transmission lapses.

At MacNN, Robert Fingas found the Android or iOS app-based ability to link two Mini Booms for surround sound to be flawed. “You also have to re-link Mini Booms each time you turn them on, so however much you might like the idea of having sound throughout a building or campsite, you’ll probably end up reverting to a single speaker out of frustration.” We agreed and had difficulty maintaining a consistent connection.

In short, the UE manages to be portable and easy to pair, get exceptional battery life, have a long wireless range, and sound as good as one can reasonably expect from a truly portable Bluetooth speaker.
Testing impressions

After reading all the experts’ impressions, we tried out a UE ourselves and found that our experiences matched up to those of the reviewers. After I’d paired it with a phone, which took less than ten seconds, linking it back up to my iPhone 5 took less than three seconds on average, and it never failed, whether we turned the speaker on first then the phone’s Bluetooth, or turned on the speaker with the phone’s connection already on. As Wired’s Mike Calore observed, the claimed 50-foot range doesn’t quite hold up. Ours was good to about 25 feet without obstructions. That’s plenty of connection power. In an apartment,  the sound came through clearly at about ten feet with a wall between the phone and the speaker.

Even better, the sound quality–considering its size–was every bit as impressive as the reviewers made it out to be. Treble comes through cleanly, classical strings have their range preserved, and the bass, while not bowel-loosening, transmits well enough to give hip hop and DJ sets enough punch to catch the beat. Above all however, the UE’s ability to play at high volume without sounding fuzzy or distorted makes it an exceptional specimen in the sub-$100 price range. This was most clearly demonstrated by its ability to fill a room with rock and roll loud enough to get all 6 people’s heads bobbing to the beat. And don’t forget, all that sound sits inside something that fits in a jacket’s breast pocket. Crazy.

The UE also gets points from us for charging via micro-USB. Since cheap Bluetooth speakers are so portable, especially the UE, you’ll want to bring it on trips to pump sound into your hotel room. Since micro-USB charges Kindles, the Google Nexus 7, most Android phones, and a handful of other gadgets, with the UE, you’ll only need to take one cable for all those devices when traveling. Plus they’re easy to replace should you lose it on accident. Another bonus is of micro-USB charging is that you don’t need a fat, multiple-outlet-hogging AC adapter. Any old USB port will do. It makes AC adapter dependent models look outdated by comparison. It’s a joy to be able to travel with only an Apple Lightning cable, my MacBook Air’s plug, and a micro-USB for my Kindle and the UE.

One helpful feature we found in our own testing that wasn’t specifically mentioned in many reviews was the fact that the UE has indicator sounds in addition to the blinking Morse code lights found on most other models. It has a specific chime for when it turns on, successfully pairs, and when it hits the maximum or minimum volume. It’s a small feature that comes in handy to tell you when you can start playing music or make a speakerphone call.

In short, The UE manages to be easy to pair, is portable, has a long wireless range, gets exceptional battery life, and sounds as good as one can reasonably expect from a truly portable Bluetooth speaker.

Wednesday, December 25, 2013

How Bluetooth Speaker Connect to Your iPhone

Nowadays iPhone and other smart phone become popular. One problem is their sound is not big enough. Now you can solve this problem using a bluetooth speaker. Just start matching your iPhone and bluetooth speaker. Then you can transfer your audio to bluetooth speaker.