Amplifier-Loudspeaker Matching Formula 1.0

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• Price: Free
• Operating system: Windows 95/98/Me/2000/XP/Vista/NT
• Date added: August 04, 2008
• Total Downloads: 5,312
• Downloads last week: 78
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CNET editors' review

Reviewed by: CNET Staff

Amplifier-Loudspeaker Matching Formula allows users to determine how many watts per channel an amplifier must have in order to obtain the desired volume level. At least, that's what we think it does. The program's description and interface are so poorly worded that it's hard to tell exactly what's going on.

For starters, users should be aware that this isn't a program so much as a fancy Excel spreadsheet; it does consist of a fairly nice-looking form, but it is built on and opens with Excel. The interface consists of a series of drop-down menus from which users select their speaker sensitivity, the size of their listening room, the furniture in their listening room, the listening distance from the speaker, and the desired volume. The program then calculates how many watts per channel are needed. And that's it. There's no Help file and no other indication of how any of this works or what users should do with this information. We recognize that audiophiles will likely make more sense of these results than we could--we have only a vague understanding of this stuff--but we can say pretty confidently that most users will find the program amateurish.

Amplifier-Loudspeaker Matching Formula is free. As it is an Excel file, no installation or uninstallation is required. We recommend this program with reservations; although it may provide a helpful calculation to some users, its overall execution leaves a lot to be desired.

Publisher's description

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 version is the first release on CNET Download.com.

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