9.5ft^3**243in^2 port**18" Destroyer**32Hz

[Nukedsodapop 5,000+ posts]

but it's hard to get a grip on, I had to carry this one upstairs to my room from the garage,

it sucked so much

 

[coolahan 10+ year member]

yah yah you dragged it.

 

[SHiZNiLTi 10+ year member]

It will go in tomorrow, need to get a buddy over here to give me a hand. It must weigh near 100lbs...

You get it in yet, or still trying to find someone help load it up //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[PhatTonyDeMarco 5,000+ posts]

Yup I got it in yesterday. I have to say, I am unhappy with it. The huge port area was just for fun to see what kind of result I would get, and it isn't a good one. It hits the lows amazingly, it is by far the best sounding enclosure I have had for this woofer. However, it just isn't loud enough; it just doesn't have that authority that this 18 should. So, I am going to rebuild, 9.5 cubes with five 4" aeros I have from a previous box. I am hoping it will get just as low, while getting much louder...

All in all, it was fun and I have no complaints. I love to build, so it will just be another thing to do.

 

[SHiZNiLTi 10+ year member]

Interesting, so 25sq.in. of port per cuft is defiantly way too much When you rebuild are you going to cut down on the cuft at all, or do you think there was no output just due to the massive amount of port area?

Can you list what the other enclosures are that you've built for this 18? include port area and cuft.

Thanks!

 

[PhatTonyDeMarco 5,000+ posts]

Interesting, so 25sq.in. of port per cuft is defiantly way too much When you rebuild are you going to cut down on the cuft at all, or do you think there was no output just due to the massive amount of port area?
Can you list what the other enclosures are that you've built for this 18? include port area and cuft.

Thanks!

I actually got lazey today and just decided to chop off the port on this enclosure and add the aeros; so now it is 9 cubes @ 28Hz with five 4" aeros. If I get a chance to get her in tonight I will let you know how it goes.

I have built so many boxes for this sub...

6 cubes @ 35Hz with 70 inches of port

4.5 cubes @ 35Hz with the five aeros

7 cubes @ 37Hz with 120 inches of port

6.5 cubes @ 34Hz with 160 inches of port

and now I can add the 9.5 cubes @ 32Hz with 243 inches of port to the list

The 6.5 cubes with 160 inches of port was probably the loudest so far, and the box with the aeros had the best SQ by far. I don't have a mic, or access to one, so SPL is based on what I can tell by ear...

If this doesn't sound good, I think I'll save for a BTL. At least I can get t/s parameters for that, and it won't cook any time soon:yumyum:

 

[mazdakid 5,000+ posts]

should cover the sub hole on top, put it on the same side as the sub, and face it back or maybe it would sound ok with both facing up too

 

[PhatTonyDeMarco 5,000+ posts]

should cover the sub hole on top, put it on the same side as the sub, and face it back or maybe it would sound ok with both facing up too

I have tried all different firing positions, and sub up with port back has always been the loudest.

I got the aero box in tonight, and it is amazing. The lows are ball shaking...

I think my next build will be three 6 inchers. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[mazdakid 5,000+ posts]

i just thought with it that far up towards the roof it would be that great facing up

 

[SHiZNiLTi 10+ year member]

Cool, why not four 6 inchers, that would give you 113sq.in. of port? You think 85sq.in.(three 6 inchers) of port area is better when your at that big of a box?

I was planning on doing my new box @ 8 cubes with sub up and (4) 6" aeros back.

Can you takes of the finished box with the ports and make a video showing some lowend flex?

What kinda power are you feeding that 18?

 

[mazdakid 5,000+ posts]

the aeros would have to be extremely long to use 4 6" in 8 cubes, even 9 cubes they would have to be over 25" each

 

[SHiZNiLTi 10+ year member]

the aeros would have to be extremely long to use 4 6" in 8 cubes, even 9 cubes they would have to be over 25" each

Your right, I just added it up and I'd hafta do (4) 41" ports to get it tuned at 29hz.

To get 6 inch aero's to work at 29hz I'd hafta use (3) of them side firing each 29.5" long. My box is 37" so that would work perfect.

Hmm im gonna re-think this design now. Maybee sub up and ports to the side could work for me.

The biggest my cutout sheet for top and bottom is 37x27