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Author Topic: The Ideal Mobile Dj Speaker  (Read 3905 times)

Chris Grimshaw

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Re: The Ideal Mobile Dj Speaker
« Reply #30 on: July 12, 2020, 08:45:03 am »

Pretty sure I put in a request back in 2016 for a dj subwoofer, needs to be a 12" cube capable of producing 128 db 15hz-120hz

6x 12" drivers would each require a one-way linear excursion of 143mm to produce 128dB@15Hz.
If we relax that to 35Hz, the one-way excursion needs to be 26mm, which feels possible.

This driver would probably get close:

Because there would be so many cones crammed into a tiny space, efficiency would be staggeringly low - around 80dB@1w, so the required power inputs would be phenomenal.
With six of those drivers crammed into a very very small box, you'd need around 100KW input to get the cones moving to their limits. That's a factor of 18x what they're rated for, well in excess of what's typically recommended.

So, with current technology it's not happening.

Bigger boxes help, but where's the fun in that?

« Last Edit: July 15, 2020, 09:38:14 am by Chris Grimshaw »
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Randy Pence

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Re: The Ideal Mobile Dj Speaker
« Reply #31 on: July 14, 2020, 11:19:56 am »

One of the dj world monitor standards is the funktion one psm318. I've never heard it, but the world famous Panorama Bar in Berlin uses them, despite having gone through 2 separate main sound systems from competing manufacturers.

In essence, it is a sub with loud mid-high pack, angled up towards the ears, quite similar to what drummers like to sit next to. i have a feeling that a good sub with coax/pointsource top combo can be had from quite a few other manufacturers, for example danley th118xl/sm60f (sm80m if one needs more juice)

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Re: The Ideal Mobile Dj Speaker
« Reply #31 on: July 14, 2020, 11:19:56 am »

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