do you see any problem with the box design/port position?

[blackbonnie 5,000+ posts]

i dont see how this isnt properly deisgned. dd recommends these subs to have an air space or .7-1ft^3 each. the only thing i wasnt sure of was with the port being close to the sub, but my last box i had was with a 15" tc sub and that was just as close to the port as this one is and i never ran into any problems so i dont see why i would here. the only thing that i was really concerned about was if the port being to close to the hump would create any air flow problems. thats what i was wondering, and no one has given me a solid answer on that. i mean i personally dont think it will because the air has to always go through somewhere or around something so i dont see why this would be any different the the magnet or baskets of your subs.

 

[60ndown 10+ year member]

i dont see the hump/port being an issue, good luck.

 

[blackbonnie 5,000+ posts]

thanks, anyone else got some opinions

 

[Mr Cabinetry 10+ year member]

Honestly, if I thought there were any issue's with design, I would of said something.

It's well thought out and designed to fit the way you want it.

However, if the port is a cause of concern in some part, that's easy enough to fix, just make the port 8" width x 6" in height, that gets it up past the ****** hump and makes the subwoofer issue a non- issue.

Phil

Woodlawn Cabinetry

 

[blackbonnie 5,000+ posts]

well it does make the sub an issue, because once i hit the back wall i cant run the port 6" wide due to the limited depth of my enclosure and my port have to run 6" at the back wall. see internally i only have a surface of 19" x 12 " to mount my subs on downfiring. so it wouldnt be possible to have a 6" port and a 7.25" sub cutout on that sheet because it is only 12" deep and that gives me 13.25". i think this is the best overall design for me, and im gonna stick with this one. whats the worst that can happen, i have to make a different one? well ill take the chance but i have thought this out thouroughly and im gonna go with this.

 

[blackbonnie 5,000+ posts]

going once, twice...tomarrow might be build day

 

[60ndown 10+ year member]

final ohm load w 3 subs and can your amp do it?

 

[blackbonnie 5,000+ posts]

i have an ia 20.1, of course it is 1 ohm stable. it will be wired to 1.33 ohms. amp can do it, subs can take it, i can build it, can you feel it?

 

[60ndown 10+ year member]

i have an ia 20.1, of course it is 1 ohm stable. it will be wired to 1.33 ohms. amp can do it, subs can take it, i can build it, can you feel it?

i know everyone tunes dd subs close to 40hz, but there is A LOT of musical information closer to 30hz (depending on your music tastes) if its a daily box, for music, id like to see it tuned @ 35, or 32, instead of 38.

but its your box.

 

[blackbonnie 5,000+ posts]

well i will keep that in mind, maybe i will change it to around 35-36. i want it to hit real low, but i here that even around 40hz alot of people are very pleased with the lows

 

[60ndown 10+ year member]

well i will keep that in mind, maybe i will change it to around 35-36. i want it to hit real low, but i here that even around 40hz alot of people are very pleased with the lows

alot of people are 15 years old and never heard......'felt' 26hz, with autority.

most people make the change from spl as kids to sq as adults.

then there's us 'adults kids' that like sq at spl levels.//content.invisioncic.com/y282845/emoticons/veryhappy.gif.fec4fed33b4a1279cf10bdd45a039dae.gif

 

[blackbonnie 5,000+ posts]

so what do you recommend, i mean can these subs really hit the lows that well? i dont want to have high expectations but your making me feal like i need it. what would you recommend me tuning to

 

[60ndown 10+ year member]

so what do you recommend, i mean can these subs really hit the lows that well? i dont want to have high expectations but your making me feal like i need it. what would you recommend me tuning to

cant help with dd subs, i know they love the power and get loud, but if you want as much sq out of em as possible your gona need to talk to someone who knows / understands dd subs.

im sure you'll be happy either way, you got great subs lots of power so your going to have fun.

maybe start a new thread?

"how low can i tune dd 8" subs" //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[adas Pro Seller]

cant help with dd subs, i know they love the power and get loud, but if you want as much sq out of em as possible your gona need to talk to someone who knows / understands dd subs.
im sure you'll be happy either way, you got great subs lots of power so your going to have fun.

maybe start a new thread?

"how low can i tune dd 8" subs" //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

You dont have experience with em, they really are different with tuning then other subs. I had my 3 1508s tuned at 39hz, lows were crazy, and the box was a bit small. My box for 4 of them, little large tuned to 37hz and while it DOES drop off below 30hz because of almost no port loading, everything above 33hz sounds like the box is tuned to 32hz or so. My box peaks at 39hz in my car, and at 36hz i hit a 140.3 legal, 142.7 at 38-40hz. Thats not bad for lows to me, at least for 8s
I really wouldnt tune lower then 37-38, the subs then have wierd freq response in the 60-70s.

GET HER BUILT!//content.invisioncic.com/y282845/emoticons/veryhappy.gif.fec4fed33b4a1279cf10bdd45a039dae.gif

 

[blackbonnie 5,000+ posts]

sounds good, thanks guys