Installing rear speakers can be quite a hassle. Usually it involves stringing speaker wire across room. However, in some situations the additional speaker wire will not be pleasing to the eye. Instead of putting up with clutter, you might want to opt for a wireless solution. However, these solutions even though they reduce the amount of wired and your room, they also have some drawbacks which you should be aware of.

They you take a look at some of these drawbacks and also discuss ways to improve performance. Lately, wireless surround kits have upped their performance by incorporating digital audio transmission. The advantage being that audio packets can be retransmitted in case they are being dropped due to wireless interference. However, the inherent drawback is that there will be a slight delay in the transmission. The delay is necessary because data packets have to be held in the buffer prior to transmission. The same is true on the receive side. Typically, the latency that wireless kits have might be in the order of 10 to 30 ms. Any more than that and you will notice a delay …

This blog is geared towards discussing products which utilize wireless signals. Smart phones as well as computers utilize Wi-Fi and Bluetooth as common wireless protocols. However, regardless of what wireless protocols being used, all devices have to meet frequency regulations which are enforced by law enforcement agencies. These standards are usually harmonized across different countries but to differ between the Americas and Europe. In this post I will focus on ensuring that products to meet these regulations.

One would assume that only transmitting devices would have to pass frequency regulations. But the fact is that pretty much all consumer electronic products to have to meet certain regulations in the United States. Frequency commissions for devices which are not intentionally radiating energy are described detail in the relevant regulations.

However, devices which do not transmit energy don’t usually have to apply for an FCC ID number. Nonetheless you will have to make sure the device complies with the relevant regulations. If it turns out later on that the device does not meet those standards then local law enforcement may require you to recall products.

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Installing speakers in cars comes naturally as many people like to shorten their trips by putting on some music. However, there certain things that can go wrong when installing power amplifiers into a car. I will show you some problems that can potentially cause problems and also how to avoid these.

First of all, a power amplifier that is used in a car runs of the car battery. The first problem that arises is if you drain a large amount of current from the battery, the voltage will go down tremendously. Therefore, you should have a mechanism that disables the amplifier if the voltage of the battery is below a certain threshold. This will ensure that you can start your car without problems.

Also, when making the connections, I recommend to connect the positive power terminal of the amplifier with a positive terminal of the battery and then to connect the ground terminal with the car chassis rather than the battery negative terminal. When making the connection, there will usually be a spark. This spark can cause a small explosion if done immediately on top of the …