Short Video : AudioQueHD315 rippen some paper

[twisztdauthorit 10+ year member]

u sould get some trunk and roof flex videos =)... im getting the same setup as that inna about 3 days. but looks very nice

Camera doesn't seem to pick up flex as good as my eye does but ill put up a flex vid i took in a bit if i can encode it

 

[bass_lover1 10+ year member]

one more question
with an increased port size (I was recommended 72^2 inches)

What should i expect:

- more excursion?

- more db's ?

- lower sound quality?

may be obvious answers but i just want to be sure

In a similar sized box, and all you do is increase the cross section of the port, you'll get a lower tuning frequency, excursion would be highest below tuning, lowest at tuning and act similar to sealed above tuning, output would increase in the low end, and would be less peaky up top, SQ is in the eye of the beholder, so thats up to you //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Just an idea, 40hz is kinda high for a daily driver, they tend to be a bit peaky on higher frequencies, build an extension for your port and glue it in place, it may be a bit retarded looking, but it will lower your tuning frequency maybe you can shoot for about 33-35 hz instead of 40, also if you plan to rebuild the box anyway, you can use this as an idea of what it can sound like with a lower tuning frequency.

 

[twisztdauthorit 10+ year member]

In a similar sized box, and all you do is increase the cross section of the port, you'll get a lower tuning frequency, excursion would be highest below tuning, lowest at tuning and act similar to sealed above tuning, output would increase in the low end, and would be less peaky up top, SQ is in the eye of the beholder, so thats up to you //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Just an idea, 40hz is kinda high for a daily driver, they tend to be a bit peaky on higher frequencies, build an extension for your port and glue it in place, it may be a bit retarded looking, but it will lower your tuning frequency maybe you can shoot for about 33-35 hz instead of 40, also if you plan to rebuild the box anyway, you can use this as an idea of what it can sound like with a lower tuning frequency.

i wouldn't mind gluing on a few extra inches of wood to the port.. only problem is i have no space... grr wait just had an idea. I could make the port curve around the corner ... but then it wouldn't be on the same plain. Idk if that a good idea or not all the boxes i made have had ports facing the same way. As for tunning, alot of AQ users have said the sub is tuned best at 40hz in 4 cubes ported... i have one slab ob MDF to use and i wanna do the most i can with it.

even DJ from AQ said 40 hz would be great. but i guess i can go lower

So need opinions for the future box...

my goals-

airspace : I'll shoot for 4 cubes after all displacement.

port: atleast 70^2 in

tunning: 35hz

what are your guys feeling about keeping the port on the same plain,

is there that much of a difference?

 

[bass_lover1 10+ year member]

i wouldn't mind gluing on a few extra inches of wood to the port.. only problem is i have no space... grr wait just had an idea. I could make the port curve around the corner ... but then it wouldn't be on the same plain. Idk if that a good idea or not all the boxes i made have had ports facing the same way. As for tunning, alot of AQ users have said the sub is tuned best at 40hz in 4 cubes ported... i have one slab ob MDF to use and i wanna do the most i can with it.
even DJ from AQ said 40 hz would be great. but i guess i can go lower

So need opinions for the future box...

my goals-

airspace : I'll shoot for 4 cubes after all displacement.

port: atleast 70^2 in

tunning: 35hz

what are your guys feeling about keeping the port on the same plain,

is there that much of a difference?

I'd keep it on the same plane, you may run into phasing issues, but I'm not 100% certain on that. I was just stating, but hey if you like how it sounds now, why change it? Unless of course you are wanting something different, I'm only saying that because I personally would aim for 30-35 hz, but then again I don't think I'd own that driver anyway, kinda got out of the stupid loud phase a bit ago //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

4.0 cubes after displacement, 70^2 in of port, at about 30" long would get you right around 35hz, should be a good start //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[twisztdauthorit 10+ year member]

it does seem a little to high in the higher hz even the low end is still loud... i want lows..

no comps here so just gonna tune it down for daily driving... the main reason for rebuilding was to get a bigger port for this beast. but might as well get a differant tunning frequency and see how she blows.

 

[bass_lover1 10+ year member]

it does seem a little to high in the higher hz even the low end is still loud... i want lows..
no comps here so just gonna tune it down for daily driving... the main reason for rebuilding was to get a bigger port for this beast. but might as well get a differant tunning frequency and see how she blows.

If you want lows, aim for 32 then make the port a bit longer, about 38". The low end is still gonna be there at 40hz, but remember that anything below the tuning frequency the output will naturally roll off.

 

[twisztdauthorit 10+ year member]

Ok, you gave some very helpful and great input.

I'm not sure when i will be able to assemble a new box but i will post it up and show it off.

i think ill stick with 35 because i occasionally play some crazy techno music =)

I'm sure it will be plenty loud either way i go

 

[bdawson72 5,000+ posts]

nice

 

[B_Campbell 10+ year member]

If you want lows, aim for 32 then make the port a bit longer, about 38". The low end is still gonna be there at 40hz, but remember that anything below the tuning frequency the output will naturally roll off.

do you have any experience with this sub, if not why give advice as to how to install it?

 

[bass_lover1 10+ year member]

do you have any experience with this sub, if not why give advice as to how to install it?

I'm sorry I didn't realize that the characteristics of a ported box are only specific to certain drivers...

The theory behind a ported box is consistent regardless of the driver in use.

If you have no evidence to dispute anything put forth by my self, then why even bother typing?

 

[B_Campbell 10+ year member]

I'm sorry I didn't realize that the characteristics of a ported box are only specific to certain drivers...
The theory behind a ported box is consistent regardless of the driver in use.

If you have no evidence to dispute anything put forth by my self, then why even bother typing?

You went right around my question also, I did not say the theory was wrong, I am just saying why should you tell him whats best for the sub when you have not even played with one your self.

 

[twisztdauthorit 10+ year member]

well while you two are chatting away

15x4.5 x 28 long gives me 35hz (eats up 1 cube just with port space)

15x4.5 x 22.5 long give me 38 hz

15x4.5 x 19.5 long gives me 40 hz

just realized that i have a little less then 4 cubes lets say ~3.7 my port is 15x2.5 x ~11 long giving me around 38-40 hz

im guessing i will see quite a difference with a new box

 

[bass_lover1 10+ year member]

You went right around my question also, I did not say the theory was wrong, I am just saying why should you tell him whats best for the sub when you have not even played with one your self.

Did I mention best? Nope don't recall ever typing that...I don't have to have experience with the said driver to know how the differences in the box will change the overall characteristics of the setup. Everything I put forth is widely available knowledge on the design of ported boxes, I was giving him input on how variable X changes with respect to Y.

 

[B_Campbell 10+ year member]

I don't have to have experience with the said driver to know how the differences in the box will change the overall characteristics of the setup.

k //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[bass_lover1 10+ year member]

k //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Just curious, but was there a point to that? //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif