Please help! How is this SOOO loud and low? - diyAudio
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Old 10th December 2009, 01:12 AM   #1
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Default Please help! How is this SOOO loud and low?

OK, I built this box, and it hit so hard and so low, I am floored. I need and understanding how this box is accomplishing this. Also I see simalarities between this and the

Box for 1 15(prior to 45 degree angles in the corners)
Click the image to open in full size.


Super Scooper for 1 18
Click the image to open in full size.

Please help
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Old 10th December 2009, 01:43 AM   #2
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What is it you need help with? You built a box that's made for bass delivery. So is the scoop. It might not be delivering as low as you think but most people aren't aware of just how low 40 or 50 Hz really is to the ears.
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Old 10th December 2009, 02:16 AM   #3
badman is offline badman  United States
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Quote:
Originally Posted by Cal Weldon View Post
What is it you need help with? You built a box that's made for bass delivery. So is the scoop. It might not be delivering as low as you think but most people aren't aware of just how low 40 or 50 Hz really is to the ears.
He needs help massaging his ego, it would seem. And that box isn't anything like a scoop, it's some kinda quarterwave resonator, like a TL.
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Old 10th December 2009, 02:30 AM   #4
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No my ego is fat enough, lol.

I need understanding WHY this is so loud. I have tried MANY speakers and MANY amps. almost all have done very well.

I have noticed this thing is very loud at 35-45hz. In 1/4 space it is really nice. But in 1/8 space. and with about 3Kw, I can barely stand to be near it.

Why is this so. How can I modify this design for say a 12, or 2 12s?

Can I modify this for 2 15s?

Has anyone tried the design I did?

Thank all who responded!
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Old 10th December 2009, 02:39 AM   #5
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Originally Posted by badman View Post
And that box isn't anything like a scoop
I was referring to the Mogale he posted.

3KW and you wonder why it is difficult to be near? Are you being funny with us? Do tell us what driver you have.
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Old 10th December 2009, 03:07 AM   #6
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AudioQue HD315, little brother to the DD3515 from Digital Designs. I have a video of the performance if you guys want to see it....
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Old 10th December 2009, 03:46 AM   #7
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I just watched a couple on YouTube. That kinda **** is too painful for me.
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Old 10th December 2009, 03:59 AM   #8
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Heres my buddies car with one installed.

YouTube - 1 AudioQue HDC315 custom built in a Caddy, Flexing

I just want to re-apply this design to 2 12s and eventually 2 15s. I have Hornresp and Akabak, but as I have only been using these for about a week, I am still far behind by advanced horn designers expectations.
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Old 10th December 2009, 04:26 AM   #9
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You won't be doing anything meaningful in hornresp with Digital Design products unless they give up Theile/Small parameters, or you measure them yourself. Why don't they give up proper specifications like the rest of the crap-driver companies (Pyle, Pyramid, Eminence, etc)? In my not so humble opinion, this company looks like a joke.

I've got a design in hornresp with six 15" crap-drivers in a front-loaded horn which will install in the back of my truck and do 142db at 55hz with 1500 watts input. Is there any combination of Digital Designs components in any of their recommended configurations that'll do 142db at any frequency given equal input power?
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Old 10th December 2009, 05:08 AM   #10
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Dimensions are needed so someone (maybe myself) can create an akabak script for you. HR won't model a scoop/transmission line.
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