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Who can make LED Equalizers such as the ones that go inside T-shirts but much smaller? Answered

My boyfriend and I own our own mask company. We used to put equalizers in the mouth piece. They were about 2inchs long by 4 inches wide and were powered by a AAA battery pack. The manufacture stopped making them and we are looking for someone new who could make them or something very similar in size. 

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What was the battery life on them like ? How many AAA ? How many elements on the bar graph - rows and columns ? They aren't "equalizers" they're just displays of the frequencies in the signal.

it had 2 AAA batteries and they would last quite awhile if we left it on constantly probably 24 hours. There are 8 rows and 11 columns.

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The things you have look like Electroluminescent panels to me- big area, not spectacularly bright ?

I was afraid of that. A flexible EL panel is custom manufactured, and will cost a lot of money to tool up for. We could mount LEDs on a flexible circuit board though, more expensive per unit than a custom EL panel, but no tooling

Im just not sure if that option would work for us, we would need to see a sample. How much does tool up cost? and how would I fine a custom manufacturer?