----- Critically Important -----
Adobe has deemed that the Flash content on web pages is too risky to be used by the general internet user. For virtually all modern browsers, support for Flash was eliminated on 1-1-2021. This means that those browsers will not display any of the interactive Flash demos/calculators/graphics on this (or any other) site.
The simplest (not the best) fix, for now, is to download the Ruffle extension for your browser. It will render the Flash files where they were previously blocked. In some browsers, you will have to click on the big 'play' button to make the Flash applets/graphics visible.
An alternative to Ruffle for viewing Flash content is to use an alternative browser like the older, portable version of Chrome (chromium), an older version of Safari for Windows or one of several other browsers. More information on Flash capable browsers can be found HERE. It's not quite as simple as Ruffle but anyone even moderately familiar with the Windows Control Panel and installation of software can use Flash as it was intended.


Power is a measure of the amount of work that is being done at a given point in time. If a bulldozer is pushing a pile of soil (or any other device doing work) at a given rate of speed, it is doing a certain amount of work. The actual amount of work being done is determined by the load presented by the soil (the amount of soil being moved) and the rate that the dozer is pushing it. To push the pile faster, the engine would have to produce more power. To push more soil at the original speed, the engine would have to produce more power. Think of pushing more soil as adding more speakers to an amp (wired in parallel - to be covered later). Think of pushing the original amount of soil at a faster rate as driving the speakers harder.

Power to a Speaker:
The power that an amplifier can produce is determined by the load presented by the speaker's voice coil and the amount of electrical force that the amp can apply to the woofer's voice coil. I'll go into more detail on these topics (amplifiers, electrical power, speakers, speaker loads...) later in this tutorial. In the following demo, you can see that the cone only moves a little at low power but more at high power. Click the buttons to switch between no power, low power and high power.

It seems that most everyone wants to get the most power from their car audio amplifiers. Later chapters will cover just how to maximize the output from your amplifier.


Click HERE to visit a friend's new car audio tech site.