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Don't you just hate when you can't tell if your speakers are overloaded or not. this can tell you if they are! (this is very dynamic to the speaker, as the bigger the speaker, the less power that goes to the LED)

Step 1: Materials

you will need few materials for this.

1 high power large LED. if you don't have that then use two or three regular LED's (depending on the power of your transmitter, computer LED's suggested)

speaker wire

speaker (s)

LED wire (optional)

a stereo or some audio transmitter

Step 2: Connecting the Led (s)

Get your speaker and LED's and connect the positive side of the led to the positive side to the speaker input. do the same for the ground side of both. (if you don't know what side of your LED is positive or ground, test it with a battery or low power power bank. you may have to soldier some wires to the LED(s))

if you have a bookshelf speaker, do the same for the terminals of your speaker. MAKE SURE ITS FIRMLY CONNECTED!!!!!!!

Step 3: Connecting the Speaker to Your Stereo

im pretty sure you know how to do this

Step 4: TEST IT!

turn on your transmitter and turn it up!
if the LED's blow or get darker, this means your clipping. (you really need to turn your music down if it blows the LED's)

Step 5: Why Does This Work

Sound signal is actually just a highly fine tuned version of AC current. And LED's are built to handle high stress situations (such as strobing and fast changing power input, aka audio) on a low power input (aka audio... again), so an LED is perfect for situations like this. and remember, the size of the speaker depicts how much is going into the led (a bigger or more high power speaker takes more energy so less power goes into the led and vice versa.) making it accurate with any speaker, it also provides for a cool light show in the dark.
<p>I have a question for those who made it. Did it work?</p>
Cool!!!!
<p>Not cool, hot !</p>
Guess we'll have to say that in the winters nowadays ;)<br><br>(Hope you're not from south pole because then I would seem mad as it's summers there...)
<p>nice</p>
<p>I have to say, I am not exactly sure what you think you've accomplished. LED's are still diodes. And in one direction, it conducts and lights, in the other direction it blocks the voltage. So just connecting an LED across the speaker terminals really doesn't do much of anything other then blink in sync to the music pulses, like a color organ. JMHO</p>
that's the point, to give you a visual to what's going in your speaker.
<p>Not really, in fact what you see isn't going into your speaker, it's going inot your leds as your Leds are parallel to them, this is the principle of energy distribution. Anyway, your leds won't last long, such leds (green) as a forward voltage of arround 2V, each time the voltage exceeds 2V leds are overcharged and they don't like that at all.</p>
I know, I'm still working on it but it is still cool how you can do that, really it's a project that. you do for fun. not really copyright material

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