Amplifier-Loudspeaker Matching Formula in a Home Audio System

In terms of power, we compare the power of amplifier (watts) by the power handling capacity (watts) of the loudspeaker. Power capacity of the loudspeaker is measured by watts but actually the power of a speaker is measured by sound production capacity which is measured by decibel (dB). dB does not have linearity with power handling capacity (watts)

The electricity signal is transformed to sound energy by loudspeakers. Power handling capacity of the speaker is measured by watts but sound production capability is measured by dB. For instance there are speakers; both of them are 100 Watts. One produces 90 dB (1 mt 1watt) and other produces 93 dB. Second one does provide twice volume of sound by the same power compared the first.

By using the program below, you may easily calculate how much dB that you may provide by your system or you may choose your amplifier or speaker in accordance with your demand.

This unique software has been prepared in Ms Excel and does not have any similar one throughout world.

Calculation of sound volume has so many complexities. The furniture, room dimensions, floor coverings, windows, heat, humidity, number of people at the room etc my software can not provide 100% accuracy but it gives idea and guides listener through more conscious way. According to me, a full-range system should provide at least 93 dB of sound. Attacks of a symphonic orchestra may come close to such levels. So if you tend to set up a full range system, your aim should be to achieve 93 dB sound at the listening chair.

Input the parameters of your system to the software below and calculate what you have at your listening chair. In other words, put your desired parameters and calculate what hardware you should purchase.

I would like to add a foot note here that when you use the formula, result will be limited to the power of your speaker. If your power amplifier is powerful than your speaker, if yes, then input your speaker’s power to formula.

For instance assume your speaker has 100 Watts of power but your amplifier has 250 Watts of power. Your sound will be limited to your speaker, hence input 100 Watts of amplifier power but not 250 Watts.

Let me know about your experiment.

Please go to link below to use formula.

http://www.nonamehifi.com/how_much_watts.xls

Ozhan Atalay www.nonamehifi.com

December 2004 that article can be shared by referring to www.nonamehifi.com

Copyright © NonameHifi 

About the Author:

Ozhan Atalay President www.nonamehifi.com

December 2004 that article can be shared by referring to www.nonamehifi.com

Copyright © NonameHifi

Article Source: ArticlesBase.com – Amplifier-loudspeaker Matching Formula in a Home Audio System

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The introduction of high definition TV has truly enhanced the home cinema experience enjoyed by consumers, but it has also caused a lot of confusion and uncertainty. It doesn’t help that manufacturers have been focusing their efforts on several different connection types over the past decade, which means that there are now thousands of different devices on the market, all of which use different types of plugs. FireWire, DVI, and HDMI are all connection types that have enjoyed the limelight and have been found on the backs of TVs at one time or another, and now most consumers are totally confused about the differences between these connections and which type is best.

What’s The Big Deal About Connections?

Many people don’t understand why there is such a big deal about something as simple as a connection, surely it’s just a way of plugging the cable into the TV; surely all connections basically do the same thing? The war between different connection types really boils down to money. It costs companies a fortune to develop a new connection platform, therefore they are eager to get as many manufacturers using their connection as possible so that they can charge a royalty. If one connection emerges as the global standard, then it can be incredibly lucrative for the company that owns the royalty rights; hence the fierce competition to try and establish each of the connections mentioned above as the global standard connection for all HD devices.

The Emergence of HDMI

As the technology behind HD TV developed it quickly became apparent that a new connection was needed that not only delivered digital quality signals, but was also easy for consumers to use. The first attempt at a digital connection was FireWire – this used just one cable to deliver audio and video signals, and also allowed devices to communicate with each other. However FireWire never really gained much support from manufacturers and hence soon fell out of fashion without ever reaching its potential.

DVI was next and was originally developed for the PC industry. DVI cables only carried video signals, but they could support both digital and analogue connections. When home entertainment manufacturers saw that DVI had gained favour with PC users they started to incorporate DVI connections into their products. However, the large form factor and lack of audio support meant that it wasn’t ideally suited for use in home cinema systems.

HDMI is almost identical to DVI; however it does offer improvements in some important areas. For instance, HDMI cables use a plug with a much smaller form factor, which is important when space behind your home entertainment system is limited. HDMI is also able to carry both audio and video signals in a single cable, meaning that only one cable is needed to make a connection. HDMI cables can also carry a remote control command, which helps to simplify the process of connecting and using several devices together. Perhaps most importantly, HDMI cables are also relatively cheap to produce, and have therefore become a favourite with HD TV and home entertainment manufacturers.

HDMI Is The Sensible Choice

As you can see HDMI cables offer several advantages over the other types of connection, which explains why the vast majority of home entertainment equipment manufactured in the past couple of years almost certainly uses HDMI as the standard type of interface.

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