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3 AQ HDc3 15's

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1 3 AQ HDc3 15's on Sun Mar 06, 2011 5:52 pm

mcbuggin


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not sure if this will happen but i might do SSNW what i am thinkin is subs forward with external round ports to the rear pure fart box lookin for it to be tuned to around 50-55hz. The max external dimentions are 18hX50wX18d that leaves me with 24" that i can make my ports. I am thinking divide the box into 3 equal sections with a 6 or 8" port for each. I think that 3 8" ports would be sick but let's see how she models and what you think. This will be ran off my D9's strapped at .7 if i did the math right then each sub should see around 4k for a burp Very Happy

2 Re: 3 AQ HDc3 15's on Sun Mar 06, 2011 6:53 pm

Vmann

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I'll see what I can do here soon! I think with SSNW you can get louder in that car than a wall will. I think a divider will hurt dB's though, especially if the internal geometry of each chamber becomes different, as you may have a slight phase shift between the woofers.


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3 Re: 3 AQ HDc3 15's on Sun Mar 06, 2011 7:33 pm

mcbuggin


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I think that i figured it to have a 10" round port 22" long to give me a tuneing of 57 but i couldn't make the program work so this is just a guess. By divideing the total enclosure in to 3 seperate ones I don't see how it would hurt but you can figure it better than me

4 Re: 3 AQ HDc3 15's on Sun Mar 06, 2011 7:34 pm

mcbuggin


150+ dB Daily
oh that is 1 10" port per sub just fyi

5 Re: 3 AQ HDc3 15's on Sun Mar 06, 2011 8:59 pm

mcbuggin


150+ dB Daily
ok i can do 16hX50wX24d with a external port 33wX13l and this is in a 81 honda not one that you have seen. Would like for it to be all out SPL but still play 50-65hz i have a song i can bass race with that's 55hz and the car i'm guessing will peak around 55-60

6 Re: 3 AQ HDc3 15's on Mon Mar 07, 2011 5:51 am

Vmann

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Ok, I see.

I'm having a real hard time coming up with a good analogy, but think of dividing the enclosure up into multiples as the acoustic equivalent to running a pair of unstrapped amplifiers.


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7 Re: 3 AQ HDc3 15's on Mon Mar 07, 2011 8:01 am

mcbuggin


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ok makes sense i guess

8 Re: 3 AQ HDc3 15's on Wed Mar 09, 2011 12:51 am

Vmann

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I'm starting on this tonight.


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9 Re: 3 AQ HDc3 15's on Mon Mar 21, 2011 5:03 pm

Vmann

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Mel, I've ran some numbers and graphs, if all you did was a bouble baffle you have 6.69^ft after woofer displacement, and tuning at 50hz puts your peak frequency at 61. I'll throw up some more infoz later!


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10 Re: 3 AQ HDc3 15's on Mon Mar 21, 2011 7:42 pm

mcbuggin


150+ dB Daily
let's see if we can tweek things to make it peak around 55 plz then i can still bass race if i end up useing this car

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