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Amplifier-loudspeaker Matching Formula in a Home Audio System
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
M-Audio Audiophile 2496
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