Slot Port RSD's

97eXpo · Post by **97eXpo** » Thu May 29, 2008 1:24 pm

i've been playin around with WinISD lately and ive decided to build a new box, gonna try a ported box this time. ive ended up with a 3.5cuft box tuned to 32hz. does these sound like okay numbers for a rsd12?

thanks in advance,
chad

Post by **Bfowler** » Thu May 29, 2008 1:34 pm

that sounds about right. let us know how it goes, i would really like to try that in a friend's suburban

Mackenzie · Post by **Mackenzie** » Thu May 29, 2008 4:28 pm

dam those use some big boxes..

97eXpo · Post by **97eXpo** » Thu May 29, 2008 7:02 pm

haha yeh, 2 12"s for a total of 7 cuft...good thing i got an suv:)

crx4spl · Post by **crx4spl** » Fri May 30, 2008 8:28 am

I would tune a little higher like 37hz
what type of car, a Suv that will take a lot to get low and loud.
How much power u have?

Post by **Bfowler** » Fri May 30, 2008 8:30 am

^why? (not a snotty remark, i have very little experiance with porting boxes)

will that help it blend better? just have more out put?

crx4spl · Post by **crx4spl** » Fri May 30, 2008 8:39 am

Well why else would u go slot port unless u wanted louder?
7 cu ft is pretty damn big for 2 12's! It's will take a lot more port area to tune at 32 hz. Will it get loud at low freequencys is the question. How much power will those subs take? Yes more output. Theres always a cabin gain! Maybee 7hz gain would give u about 39 which in theroy sounds great but most bass is much higher. Not knowing power levels it should get into 120 db range, so ya every db counts! JMHO

Post by **stipud** » Fri May 30, 2008 8:44 am

crx4spl wrote:I would tune a little higher like 37hz
what type of car, a Suv that will take a lot to get low and loud.
How much power u have?

On RSD subs? Those things are low end beasts. Tuning them to 37Hz would be extremely peaky, plus you'd lose all of the bottom end that the subs are famous for.

If you were tuning a typical subwoofer which is more suited to higher bass notes, like the Ryvals, I would agree with you.

97eXpo · Post by **97eXpo** » Fri May 30, 2008 1:44 pm

the car is an expedition and the subs are gonna be powered by a rsd 1200.1 at 2 ohms. please throw in ur advice, im new to ported boxes so any suggestions are gladly welcomed.

Post by **Bfowler** » Fri May 30, 2008 2:02 pm

I'm no ported expert by any stretch...but from what i have seen and read, the box you initially designed sounds perfect as it would build on what the subs are already good at. maybe Marc (brenzbmr) can chime in to either confirm this, or confirm CRX's advice on a higher tuning frequencies

97eXpo · Post by **97eXpo** » Sun Jun 01, 2008 10:50 am

Bfowler wrote:I'm no ported expert by any stretch...but from what i have seen and read, the box you initially designed sounds perfect as it would build on what the subs are already good at. maybe Marc (brenzbmr) can chime in to either confirm this, or confirm CRX's advice on a higher tuning frequencies

anyonnne??

this isnt gonna be a competition car by any means, just want a nice loud yet clean sounding box for a daily driver

thedeal7235 · Post by **thedeal7235** » Sun Jun 01, 2008 11:53 am

have u checked out the specs? i know when ive played around wityh slot/port boxes( most recently, switching from 3 10"s to 2 10's, then having to build seperate chambers b/c im using a rsd1200.1 per sub, it can get real tricky real quick- right now im running the diaMOND audio d6s(the are 4 ohms, wired in prallell = 2ohms for each amp-however i will be switching to 2 new rsdc 10(4ohms, soon, initialy i changed my chambers to accomodate 1.20 cubic ft. per chamber, that his the min. spec for the diamonds(which they just pound!!!, but when i get the new rsdc 10s in 4ohms, i know that is almost .40 cubic ft. than the specs, anyways, both my ports are 1.5inch wide, by 12" tall, and go back to 10.1 inches, and the diamonds are great, ive built 3 other boxes for rsdc and have accomodated making the boxes between .15-.40 larger-to accomodate port, and i may switch upto rsdc 12s( which i believ the specs show them at 1.25 cubic foot? i think, but heres a pic
http://i253.photobucket.com/albums/hh63 ... C03758.jpg
http://i253.photobucket.com/albums/hh63 ... C03760.jpg