The "8's vs 10" thread is getting old, I'm going with 8's...so quit arguing!

[Spud2388 10+ year member]

Ok, I'm the OP in the "8's vs 10's...worried about low end" thread and have given up hope on it. Theres 33 pages of arguing and nothing is really gettin accomplished. Yes, there is A LOT of information in there, most of it over my head, but I've come to a conclusion. I've decided to go with 3 DD 1508's ported to around 32-34hz. Yes, its goign to be hard to cram the appropriate box, along with a nine.1 and a nine.4 in a Dakota Quad Cab, but we'll see how it goes. My question is, what would be the appropriate size ported box for these and how many square inches of port should I have? I'm hoping for a loud sq setup, not spl by any means, and want to make sure the low end is somewhat decent.

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[Flipx99 5,000+ posts]

The DD site will show you exactly what to build.

Get the cf dustcap ones as there is more of a market for those.

 

[Louisiana_CRX 5,000+ posts]

You'd be better off tuning it at 40hz...It will play lower..than 40hz...That is just where the box peaks...with 3 shareing a common chamber you can go 2.5 cu ft ...Make your port length 16" long...and a 40" vent opening....You'll be happy with it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Louisiana_CRX 5,000+ posts]

The 2.5 does not include the port...and that is internal.....

 

[SeanDub 10+ year member]

Yeah, I was gonna say the same thing - tune higher. Tuning that low 1) will take up a lot of space in the form of port volume and 2) be rather low for DD subs, especially DD 8s. 40 hz will sound okay, maybe 36-38 for the best.

 

[massiveaudiocw 10+ year member]

I aggree w/ Louisiana, i would go w/ 2.25 - 2.5 cubes tuned 40hz w/ 16"^2 per cubic ft.

Corey

 

[Trey803 5,000+ posts]

what about the design of dd's subs makes them more suitable for higher tunning freq.?

 

[businessjournal 10+ year member]

dude 10s will be way better.

they'll play lower and get louder.

why would you want to use a midbass for a sub, anyway?

everyone knows that cone area = displacement = blah blah blah blah....

 

[SeanDub 10+ year member]

Jesus I hope he's kidding

 

[Flipx99 5,000+ posts]

See how easy this was.

You can probably find the 1508s for ~$130 each if you don't choose cf dustcap

 

[Flipx99 5,000+ posts]

what about the design of dd's subs makes them more suitable for higher tunning freq.?

The higher Fs I think. But how all that interplays, I do not know.

 

[businessjournal 10+ year member]

I'm in the middle of building a box for my two MB Quart RWE-204s, by the way...

WHICH ARE 8s! 8 INCHES FTW.

 

[SeanDub 10+ year member]

good

 

[audioholic 5,000+ posts]

This thread has pizazz.

 

[B_Campbell 10+ year member]

Tune lower than 40hz and you won't get quite the peaky response.