Promise Technology
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Review Of Two Digital Wireless Headphones - The New Trend In Wireless?
Watching TV at night without disturbing others is probably the prime application for wireless headphones. Not being tied to a headphone cord is one of the biggest reasons for the popularity of wireless headphones. Yet in the past these headphones never really compared with traditional corded headphones in terms of sound quality and reliability. Mostly the transmission technology would degrade the sound and be susceptible to interference. Are new advances in wireless transmission technology able to cope with the drawbacks of the previous generation of wireless headphones? We will take a look at some of the most recent models of digital wireless headphones to see how they stack up compared to traditional corded models.
In this review, we will take a look at the Sennheiser RS180 and the Amphony Model 2500. Both of these models utilize digital audio transmission. Simply put, the wireless signal that is broadcast by the transmitter will undergo a conversion process. Then the resulting information is broadcast to the digital wireless headphones and converted back to audio. Using this new wireless technology, none of these models exhibited the noise that we are used to from previous generation wireless headphones. Both models claim to transmit CD quality audio.
At first glance, the Sennheiser headphones are constructed as open headphones, i.e. sound from the headphone transducers will penetrate to the outside while the Amphony headphones are closed. Choosing open or closed headphones is a matter of personal preference. A closed model, such as the Amphony, will lower the sound level heard by others which is good when listening over headphones without disturbing others and also will block exterior noise more. Both models come with comfortable velours ear cushions and fit snugly.
The RS180 transmitter acts as a support base for the headphones. When not in use, the headphones can be suspended from the transmitter. The transmitter offer an analog audio input, yet no digital inputs. The Amphony 2500 transmitter offers analog inputs, one coaxial digital and one optical digital input. As such the Model 2500 transmitter can connect to newer plasma TVs, most of which no longer have analog audio outputs. The Model 2500 transmitter will automatically recognize whether there is a digital signal present and switch to the corresponding input.
Comparing both models in terms of sound quality, the RS180 has a light sort of quality and excels at the midrange but is low on the bass. As such the RS180 is most suitable for listening to vocal racks and light music. The Model 2500 has a more pronounced bass response, but in no way aggressive and is well balanced. The wireless transmission no longer has the problems of older headphones and the sound quality of both models rivals corded headphones. The only limitation is the fact that wireless headphones are powered by batteries and thus will never be able to blast the same volume as corded headphones connected to a good headphone amp. However, both models were able to achieve reasonably loud levels, the Model 2500 more so than the RS180.
The RS180 sends it’s signal at 2.4 GHz. The transmitter supports up to four headphones. The Model 2500 operates at 5.8 GHz and supports an unlimited number of headphones. The RS180 operating ranged is specified by Sennheiser as 300 ft In an indoor test environment, we were able to get a clean signal up to around 100 ft with both the RS180 and the Model 2500 which should be plenty for most users. The Model 2500 transmitter can connect to secondary transmitters which are called RangeBoosters that allow expanding the headphone operating range even further.
Battery life is 15 hours per charge for the RS180 and 30 hours for the Model 2500. The RS180 wireless headphones sell for around $300 and the Model 2500 for around $200.
If You Had to Choose an HD Camcorder Today?
My grandfather is not well and I want to get his fantastic stories recorded on camcorder so that my kids (to be) can see him and hear how wonderful he is. My wedding is also coming up this Summer.
Anyway, the long and the short of it is that I want to get the best sub 2000 (Canadian dollars) HD camcorder within 30 days and with the technology being so new I am having a hard time debating the pros and cons.
My wishlist:
- low light HD recording
- accessory shoe for adding a better microphone (i.e. shotgun)
- It seems HDV is still the best option because HDD has lesser quality video (?)
- I am not so sure about AVCHD because I am not confident that a camcorder with that technology will be able to get updated (firmware) well enough to keep up with the growth of this promising technology (?). Right now I understand it is so-so.
- Must have true 16:9 aspect
- low noise
So the question. If you HAD to buy one today what would you buy?
AND, what if you waited 1mo?
I would get one that is 1080i compatible with HDMI output, has surround sound capability, and has good ergonomics.
H a p p y
H o m e
T h e a t e r i n g !
Nike's new marketing mojo (Money)
How the legendary brand blew up its single-slogan approach and drafted a new
playbook for the digital era.
_By Scott Cendrowski, writer-reporter_
FORTUNE -- Few outsiders have visited the third floor of the Jerry Rice
Building at Nike's headquarters. Even most Nike employees know little about
just what the staffers working here, on the north side of the company's
192-acre campus in Beaverton, Ore., actually do. A sign on the main MORE
PROMISE Technology @ Computex 2011 - Booth Tour
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