LED Equaliser Shirt, retail $24.98 (www.lighterside.com...)
Manufactured by (Unknown)
Last updated 07-17-14

It looks like a black T-shirt.
It smells like a (recently laundered) black T-shirt.
But wait!!! What's that colored thing on the front, and what's that black box connected by a ribbon cable?

The LED Equaliser is a black T-shirt with an LED (light-emitting diode) display on the front that looks a lot like a spectrum analyser display on high-end audio equipment; the shirt's display is sound-sensitive, and gives you a nice light show whenever the T-shirt (and its wearer) are exposed to fairly loud music.

Upon closer examination (using an amplifier, speaker, and an exposed ⅛" male stereo phone plug), I was able to determine that the display uses EL (electroluminescent) panels rather than true LEDs -- but since the reseller labels this as an LED shirt, that's what I'll be calling it on this web page.


To use the LED Equaliser, feed it first (see directly below), and THEN you can go show it off at the rave.

Put it on like you would put any other T-shirt on, with that colored graphic facing the front.
At the bottom of the graphic on the inside of the shirt, there is a small black control box. On the back of the box near the upper edge, there is a medium-sized pushbutton switch. Press & release it once to turn the shirt on; press & release it again to neutralise it.

To adjust the sound sensitivity, turn the dial on the side of the control box; clockwise makes the display more sound-sensitive, counterclockwise makes it less sensitive.

The shirt ***MUST*** be hand-laundered - not machine washed or machine dried!!!
Unplug the controller and get rid of it...er...uh...put it in a dry place before washing the shirt.

Be certain the shirt is completely dry before plugging the controller back on and using the shirt. The plugs on the ribbon cable have arrows on them; just align the plugs so that the arrows are on the same side, and push them together. Do not twist.

Finally, DO NOT IRON the plastic part of the shirt...you'll almost certainly ruin "the good part" if you do.

To change the batteries, look on the small control box for a battery door. Slide the battery door off, gently place it on the ground, and kick it into the garden so the hungry, hungry praying mantids will think it's something yummy for their insect tummies and subsequently strike at it...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

If necessary, remove the two used up old AAA cells from the compartment, and dispose of or recycle them as you see fit.

Insert two new AAA cells into the compartment, orienting them so their flat ends (-) negatives face the springs for them in each chamber. The chambers appear to be rather tight fitting; you can reef on the batteries a bit to get them all the way in.

Slide the battery door back on, and be done with it.
Aren't you glad you didn't kick that battery door into the garden with all those hungry, hungry praying mantids now?

Here is what a praying mantis looks like.
I found this guy on the morning of 09-08-06 clinging to the basket of my scooter.

This is an LED T-shirt, not a flashlight designed to be carried around, thrashed, trashed, and abused. So I won't throw it against the wall, stomp on it, try to drown it in the toilet bowl or the cistern, run over it, swing it against the concrete floor of a patio, bash the controller open to check it for candiosity, fire it from the cannoņata (I guess I've been watching the TV program "Viva Piņata" too much again - candiosity is usually checked with a laser-type device on a platform with a large display or with a handheld wand), send it to the Daystrom Institute for additional analysis, or inflict upon it punishments that flashlights may have inflicted upon them.
So this section of the T-shirt's web page will seem SIGNIFICANTLY more bare than this section of the web page on a page about a flashlight that was born to be a flashlight.

The display looks like a graphic equalizer; but all of the segments respond to sound to the same degree, regardless of its frequency - that is, there is no frequency discrimination circuit in it at all. The display will appear the same whether the sound is low in pitch or high in pitch.

Photograph of the shirt with the display on; this one is focused mainly on the LED display.

Spectrographic analysis
Spectrographic analysis of part of the display.

Spectrographic analysis
SSpectrographic analysis of part of the display; spectrometer's response narroweed to a band between 500nm and 520nm to pinpoint emission peak wavelength, which is 507.490nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/46/ledqual.txt

USB2000 spectrometer graciously donated by P.L.

Shirt responding to demo zax from the Synth Werk computer program, titled, "SYNTH-WERK Trailer Demo HD bestservice"

The product *IS* sound-sensitive; you should have the sound on while viewing this video.

I soon determined that the display elements are not LED; they are in fact EL (electroluminescent).

Note that the EQ display appears to respond "upside-down" -- this is not a camera trick; the shirt actually behaves this way!!!

The next morning, the display operated the way you'd expect -- that is, lighting up from the bottom and going higher by going upward instead of downward!

I'm careful as h-e-double-bendy-straws to keep this website G-rated; the part of
the song I used was very carefully checked for potty language; there was none.

This video is 160.9996325471 megabytes (161,697,892 bytes) in length; dial-up users please be aware.
It will take no less than eight hundred five(!) minutes to load at 48.0Kbps.
This video is definitely ***NOT*** dial-up friendly!!!

The LED Equaliser Shirt responding to demo zax from the pee-cee demo, "Collapse" from the demo group The Brain Slayer that was released in 1992.

The product *IS* sound-sensitive; you should have the sound on while viewing this video.

This video shows the EQ display behaving normally -- that is, the lower segments illuminate first; the higher segments illuminate as the audio amplitude (volume) is higher.

This video is 172.1895347290 megabytes (172,535,862 bytes) in length; dial-up users please be aware.
It will take no less than eight hundred sixty(!) minutes to load at 48.0Kbps.
This video is definitely ***NOT*** dial-up friendly!!!

The LED Equaliser Shirt responding to the song, "Pac-Man is Naked and So Should You" by the Rochester New York comedy synth act, "Worm Quartet".

The product *IS* sound-sensitive; you should have the sound on while viewing this video.

This video is 6.0078247238 megabytes (6,201,006 bytes) in length; dial-up users please be aware.
It will take no less than twenty five minutes to load at 48.0Kbps.

Test unit was purchased on the The Lighter Side website on 06-14-14 and arrived on the afternoon of 06-18-14.

Product was made in Hong Kong.
A product's country of origin really does matter to some people, which is why I published it on this web page.

UPDATE: 07-06-14
My sister accidentally laundered this shirt ***AND*** machine-dried it with the controller still plugged in. I saw the controller in the bottom of the washingmachine on the morning of 07-03-14.
Needless to say, it was ruined

She did pay me to order another one, which should be here within 4 to 5 days.

UPDATE: 07-17-14
The replacement shirt arrived on the afternoon of 07-14-14, so that dreadful, "Failed or was destroyed during/after testing" can now safely be removed from its listings on this website.

    PRODUCT TYPE: Light-up sound-sensitive LED Tshirt
    LAMP TYPE: EL panels
    No. OF LAMPS: 117
    SWITCH TYPE: Slide switch on/off on controller
    BEZEL: N/A
    BATTERY: 4xAAA cells
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER- AND PEE-RESISTANT: Light splatter-resistance at maximum
    WARRANTY: Unknown/not stated


    This product is not intended to be used as a light source;
    therefore the standard ratings system will not be used.

LED Equaliser T-Shirt * (www.lighterside.com...)

Do you manufacture or sell an LED flashlight, task light, utility light, or module of some kind? Want to see it tested by a real person, under real working conditions? Do you then want to see how your light did? If you have a sample available for this type of real-world, real-time testing, please contact me at ledmuseum@gmail.com.

Please visit this web page for contact information.

Unsolicited flashlights, LEDs, and other products appearing in the mail are welcome, and it will automatically be assumed that you sent it in order to have it tested and evaluated for this site.
Be sure to include contact info or your company website's URL so visitors here will know where to purchase your product.

This page is a frame from a website.
If you arrived on this page through an outside link,you can get the "full meal deal" by clicking here.