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How To Install An Amplifier!
Pyle – Mini 2x75W Stereo Power Amplifier – PCA3
The remote turn on wire goes to the head unit. When the radio is on, it puts out 12 volts that turn the amplifier on. If you are using a factory radio that does not have a remote turn on (or power antenna wire) you can tap into, hook it up to the ignition, so that the amplifier does not remain on when you turn the car off.
Even though amplifiers are easy to install, a lot of things could go wrong. The most important thing to consider is where to get the power from: Straight from the battery. ALWAYS put a fuse as close to the positive battery terminal as possible. If the wire going to the back of the car shorts out, then the fuse will blow. If you don’t install a fuse or breaker and the wire shorts out, then the wire will carry so much current that the insulation will melt and could catch your car on fire. The size of the fuse should be the same rating as the fuses used by the amp(s) or less. The ground (-) should be hooked-up to a metal part of the car. It is not necessary to run a ground wire all the way to the battery.
When running power wires to the amp, keep them as far away from the RCA wires (see alternator noise section for more info), ideally on the other side of the car. It is OK to run the turn-on wire from the radio along with RCA’s, since it carries very little current.
Amplifiers produce a lot of heat and need to receive plenty of fresh air. If the amplifier is to be mounted under a seat, upside down, in a rack or enclosed, a fan or two might need to be used to increase air flow.
Streaming Flash on the iPhone?
Yes, you read well generally, and is true. modulation index, people who have done their best radio over 30 years, has released a new version of its Internet radio player in the Apple iPhone that supports streaming audio using the flash iPhone.
Why is this important? Because it solves three problems. Sound quality and reliability, economy of scale and interactivity
Problem 1 is the audio quality and reliability. Quality is determined by two factors, the sound quality of overheads and low transport. Today the vast majority of what you hear on the iPhone is more MP3 Shoutcast. Some people find a way to get HE AAC v1 Shoutcast on the iPhone with integrated decoder. But to get sound experience on the iPhone reliable while driving, you can send your food over 32Kbps. 24 kbit is even better. And all that HE AAC v1 love, takes up to 32Kbps to shoot (and MP3 at 32 kbps sounds like garbage.) This means that he must AAC v2, which is only possible if the iPhone application allows a codec of a good reliable source . (I do not mean the low quality faad2.) That has solved the problem of codec, but the issue of transport was still there. I also like Shoutcast, but it was never designed as a mobile streaming protocol. Works well when the connection is pretty reliable, but is frayed at the edges when you leave. HE-AAC v2 delivered through RTMP protocol in Flash Media Server, addresses both issues. You get a high quality codec, delivered in a reliable transport. solid sound that makes the most demanding GM station proud. One problem solved.
Problem 2 is the economy of scale. Despite moving transmission becomes popular, yet cume listeners in office. That means that stations must provide a separate server to get moving or they had to bring your PC flow. Now that Flash streaming with HE-AAC v2 is availble on the iPhone, the stations do not have to choose. They may have a single stream to serve Windows, Mac and iPhone, reducing overhead and requirements for graduation. It also means that stations can choose from a wide variety of CRC, giving them control over their own destiny. Problem 2 solved.
Problem 3 is interactivity. As much as this may offend the purists (mostly, I think that fall in this country) radio stations are visual and interactivity to help differentiate the Internet radio. To support Flash streaming protocol and establish a format for metadata and advertising AlbumArt index modulation station solution provides the album with the ability to listen Click “buy now” links and graphics synchronized to ads audio, once more with a click through iPhone, Windows and Mac Problem 3 solved.
barriers continue to fall and the industry is developing more and more mature solutions to Internet radio from a real company. Since we are 10 years in this business, I am happy to see