A Look at Apples New Wireless Headphones

You may have noticed that the latest Apple iPhone no longer has a headphone jack. Apple needed to save some space in its phone and thus couldn’t afford to equip their latest generation phone with a classic headphone jack. Obviously, many people will hate this decision but I guess you will have to live with that omission if you want to purchase their phone.

However, there are some wireless headphones that have been released which promised to be super small and work perfectly with the phone. In fact, they use a proprietary wireless technology. They are tiny and carry batteries inside. Despite having batteries built-in, they are extremely lightweight. Supposedly they last for five hours per charge but I haven’t actually tried that out. Obviously, the operating time also depends on how much you drive the headphones. They don’t have much range but I could cover distance of up to …

Some Thoughts about the Material Used for Inductor Coils in Audio Amplifiers

Most of today’s audio amplifiers use a Class-D architecture. This architecture benefits from offering high power efficiency compared to traditional audio amplifiers. However, at their output, these amplifiers require a low-pass filter which is designed to remove the unwanted switching components which are generated by the switching stage. This low-pass filter is typically formed by a coil and a capacitor. Some more advanced low-pass filters operate with two coils and two capacitors.

However, the coil material has an impact on amplifier performance. In particular, the material will impact the distortion as well as the losses of the amplifier. Most notably, one parameter affects performance. It is called permeability. This parameter describes how many windings are required in order to achieve a certain inductance given a certain type of coil. The larger this parameter, the lower the number of windings per inductance.

Having a low number of windings has the advantage …

How Do Bluetooth Receivers Work?

Bluetooth audio receivers have been around for decades. Primarily, they are being used for turning speakers into wireless speakers capable of receiving music from a portable device. In this post, I’m going to focus on audio receivers in particular. There are also some other Bluetooth dongles on the market which are designed for transmitting and receiving data. I am not going to talk about those types of receivers.

Typically you can find these types of audio receivers for less than $100. Some models such as the Bluetooth receivers at http://www.amphony.com/products/bluetooth-audio-receiver.htm have special features such as an integrated power amplifier. Also, more and more audio amplifier manufacturers are integrating Bluetooth into their products. Having Bluetooth, you can receive audio from a Bluetooth-enabled device. This can be quite practical. Typically, these amplifiers have a selector which either sets the input to one of the hard-wired audio inputs or the wireless.

cordless speakers

Aside from …

How Well the Wireless Speakers Work Outdoors?

People are finding more and more interesting applications for wireless speakers. Many of these applications involve streaming from a Bluetooth-enabled device. For that particular purpose, Bluetooth speakers are optimal. However, there are also some other applications such as streaming music outside of your house. For this application, Bluetooth speakers are usually not suitable because of the short wireless range.

wireless speakers with an iPod cradle

The range of Bluetooth speakers is typically less than 50 feet. However, there are some wireless speakers from Amphony available which have much larger operating range. Some models actually can get up to 600 feet and range. For outdoor applications, I would definitely consider one of those alternatives. The fact is that the range which is specified by the manufacturer does usually not apply to situations where the signal is traversing walls and partitions. The reason for that is the signal gets weaker every time it goes through wall. This fact …

Some Tips for Using an MP3 Player

In this article, I will look at how to properly use an MP3 player. I will also introduce some of the common functions which are supported by most devices on the market. Please note that modern smart phones have applications which support many of the same functions as MP3 players. Therefore, you can use these tips with your cell phone as well. So just spent a few minutes and read through the next sections. I’m sure that you will uncover some functions which you didn’t realize were available.

The MP3 player has replaced CD players for the most part. The fact is that MP3 players are just much more convenient than CD players. First of all, you don’t have to carry around a collection of CDs. Second of all, MP3 players are much smaller and more rugged. They work even if you knock them around. They are usually small enough …

Learn How to Properly Set up Some Wireless Speakers

If you have never installed speakers then don’t worry. By purchasing some wireless speakers, you can eliminate a lot of work that traditionally was associated with installing speakers in your home. Wireless speakers allow much more flexibility than regular speakers. You don’t have to worry where you going to run speaker wire and also you don’t have to worry about covering up the wiring that you have installed. Therefore purchasing wireless speakers is a good option. However, make sure that the speakers that you by meet certain requirements. In this post I’m going to review some of these requirements and also offer some advice for properly setting up these types of speakers.

new wireless speakers

Depending on how big the rumors in which you plan on setting up the speakers, you will have to carefully consider the wattage specification of the speakers. Output wattage usually is directly related to how loud the speakers …