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Saturday, March 22, 2008

Information about Audio Video Cables 3

And next the optical cable is the connection of AUDIO which is very clarity and latest of all the audio connections.

A digital optical connection is a fiber-optic connection that is used for transferring digital audio signals (such as PCM, Dolby Digital, and DTS) from a source device, such as CD or DVD player and an AV receiver or Surround Sound Preamp/Processor. This connection is also referred to as a TOSLINK connection.
Its a ray passes through the fibre-optic and it carries the 5.1 sound from source to the destination.

Wednesday, March 19, 2008

Information About Audio Video Cables 2

Now the Component video cables are the same as normal cable but A Component Video Connection is a video connection in which the separate color and B/W elements of the signal are transfered via separate cables from a source, such as a DVD player, to a video display device, such as a Television or Video Projector. This connection is represented by three RCA cables -- that have Red, Green, and Blue connection tips. There are two types of component video connections in use for consumers: Y,Pb,Pr - Progressive Scan component video input/output connection, and Y,Cb,Cr - Interlaced scan only component video input/output connection.

Next An S-Video connection is an analog video connection in which the B/W and Color portions of the signal are transferred separately. The signal is then recombined by the Television or video recording device at the receiving end. The result is less color bleeding and more defined edges with a standard analog composite video connection.

Monday, March 17, 2008

Information about Audio Video Cables 1

The Audio Video Cables are most important for the Home Theatre Devices. Without Cables we can not pass the sigmals between each components. So lets have some information about them......

The above shown figure is the Analog Stereos cables transfer Left and Right stereo signals from components, such as, a CD player, Cassette Deck, VCR, and other devices to a stereo or surround sound amplifier or receiver. Red is designated for the Right Channel and White is designated for the Left Channel. These colors will correspond to the colors of the receiving end analog stereo connectors on an amplifier or receiver.
And the same as Audio left right channel cables, this is the Composite Video Connection is a connection in which both the Color and B/W portions of the video signal are transferred together. The actual physical connection is referred to as an RCA video connection and is usually Yellow at the tips.

Saturday, March 15, 2008

The Complete Home Theatre System 2 - Surround Sound

Surround sound is a term applied to several types of processes that enable the listener to experience sound coming from all directions, depending on the source material.

Getting Surroud Sound - The AV Receiver

To get surround sound, you need a component that can decode and reproduce surround sound from a source, such as a DVD. Most commonly, this component is referred to as an AV Receiver (Audio/Video Receiver), Home Theater Receiver, or Surround Sound Receiver.

A Preamplifier that switches and controls which audio and video source is selected (such as a DVD player, VCR, CD player, etc...) and processes the incoming stereo or surround sound signals and distributes them to the correct amplifier channels and the subwoofer output.

A built-in Multi-channel amplifier (5.1, 6.1, or 7.1 channels) that sends the surround sound signals and power to the speaker system.

Friday, March 14, 2008

The Complete Home Theatre System 1

The Sound of the Theatre which comes with 5.1 or 6.1 DOLBY DIGITAL PRO LOGIC SOUND in the home itself is called Home Theatre System. This is only the SOUND not the VISION (Video Display Device)

The only resource you need to select, purchase and install the best home theatre components for your budget!

The main components of the Home Theatre System includes mainly DVD PLAYER, A/V RECIEVER, SPEAKERS, SUB-WOOFER.

You will get the dought... why TV, Plasma or LCD will not include in the home theatre components? Yes, you are right without Video Device where we can see the Video. Ofcourse, we should have the Video Device (TV/LCD/Plasma) along with that we need have the effect of Theatre, So we need to buy the components of home theatre where we enjoy the Digital Sound in the HOME.

Thursday, March 13, 2008

RMS, PMPO and Frequency Response of the Speaker

15" 1000 watt JBL Sub-woofer

Here 1000 watt means its RMS value of wattage not in PMPO, PMPO watts is more than RMS and its not actually calculated. if we give watt in RMS, we can estimate actual power of the speaker. So always know the watts in RMS.

And now comming to the Frequency response of the speaker, we now take the example of above sub-woofer. Generally sub-woofer means it produces the low frequency volumes say bass, drums; it vibrants the floor, how big the sub-woofer you enjoy music that much.

Subwoofer response normally from 20Hz to 400Hz, means the frequency levels or the sound waves are not directional, they shake the floor, where as normal speakers response from above 400Hz to 16KHz.

Frequency Response of above sub-woofer is 25Hz – 400Hz,

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