Used in a sound installation for concert hall from our customer’s feedback

Here’s the feedback from our customer who is using a customized switching power supply D-50F15 from our company.Let’s go check this where and how he used it!

okay, it’s been a while! but as of the beginning of October 2015, i have exhibited an installation together with the artist Cecilia Sterner, at Malmö Live, which a concert hall in the city of Malmö. this project is aimed primarily at children, although not necessarily so… it was a chance to practice some subversive thinking about the organization of sounds into music, from a very fundamental angle. inspiration for this was taken from Dr. Suess, who is one of my heroes. children of a certain age have not yet been completely brainwashed with pop, or tradition, and take most things they hear with a much more open mind than adults are capable of. they will treat nursery rhymes, orchestral intruments, and noise more or less equally, provided the environment supports this. enter “KLONK!” Leta Leka Ljud.

this wasn’t meant to be so much about music, although it is musical… it is about sound. and play。

here are some images:

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the basic technical solution was to use loopers and media players instead of computers… a very simple redundant structure that could sustain damage to some parts and still work, in a sophisticated capacity. i made recordings of the sounds i wanted and had them constantly playing. the LM3866 chip amp has a “mute” function which was controlled by a timer/relay switch. it’s easy to add some fade in and out time to the chip… all the parts are already in there. a little time constant and you have a smooth transition. i made 21 channels of powered speakers of various types. all the sounds were muted until some kid tripped them. then they would pop up for a fixed period. sometimes it was a little scary when that happened! all part of the dream.

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the basic little “KLONKER” looks like this. the back was 1/4″ aluminum for a heatsink. i mounted the LM3866, a switching supply, fuse and a 555 based delay relay gadget. wired a trip wire to the box… boom. the full range 3″ driver is a “BMR”… a cheap variation on a Manger (no matter what the manufacturer says…). i got a bunch of them surplus and they were perfect for this. this driver is the seed for the Naim BMR driver.

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here you see a bigger one.

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this is a “toobapig” it is adjusted with EQ and is mounted inside the tree, which acts as a horn. it makes sousaphone like elephants on parade. not all the time! just suddenly, you heard em coming…

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various bits of KLONK getting readied to go…

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some KLONKERS were built into the round loops. the kids would be climbing on them and suddenly they would start clanging and whistling. there were little trip switches and actual buttons for them to find.

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the hanging “ljusfrukt” had more melodic phrases… they were fun. Ed Menton built them for Cilla.

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here you see the installation

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weird fruit!

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KLONK tree

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these are “KLONKSVAMP” they are powered inverted horns with buttons to trip them. these were very popular.

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these loops were super peaceful until they weren’t. kids hid inside, and then they would come screaming out of them! over and over again. super popular.

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not all of the sounds were electronic! we gave the kids every opportunity to take charge of KLONK. we had to touch up and repair things regularly. those swedish kids can really run amok! love it.

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opening day. we collaborated with the symphony orchestra’s musicians. everyday someone came with a flute, french horn or trombone. that was magic. they would wander around… improvising.

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Cilla projected northern lights on screens hanging. the use of fabric in this piece was fabulous.