Question about slapping noise.

[Burnam]

Today I received my Type-r 1222D (Dual 2ohm) and this Ported Box.

BTW it's running off a Kenwood kac-7252 //content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif (500wrms @ 4Ohms)

Installed it and set my gains and the subwoofer sounds good buuuut

there is a kind of slapping sound that is ammitted at the higher notes (low passed at 60hz)

The weird part is, when I put a t-shirt in the port it blocks the sound.

I've seen a few posts on here about this issue, but no real answer. I'm guessing it's just the box??

Only problem is I don't have any means to build a box or have one made around here (that I know of)

Thanks for any help

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[RFThump85 10+ year member]

I guess thats what u get for buying alpine subs and not rockford!

 

[Burnam]

I guess thats what u get for buying alpine subs and not rockford!

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif ...........no:uhoh:

I guess I'll do somemore experimentation and if it doesn't work out I'll email woofersetc.

I'll try to check the port to see if it's loose. thanks for the help

 

[xluben 10+ year member]

is the speaker wire too long?

you may have to tape the excess to a box wall.

also a loose piece or any leak could also cause the noise.

i would also have thought it could be clipping the amp, except for the fact it stops when you put a shirt in the port.

it could still be something with the amp settings (what are all the settings?)

 

[xluben 10+ year member]

BTW, I did the calculation, and that box is:

(approx) 1.5ft^3 Net Volume Tuned to 34Hz

also could be port noise, according to winisd it should be right on the edge of port nosie with that thin of a port and that much power.

PS. that sub could handle double that power. you could have probably gotten a 1 ohm stable amp that'd do quite a bit more power for the same price //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[Burnam]

thanks for the reply.

i'm gonna check the speaker wire tomorrow after work. i think that might be it...since it's not held down and runs striaght to the back of the box.

as for the amp, i've had it for a while and i'm upgrading here in a few weeks-a month. i plan on running my front stage off that when i get a new amp and eventually i'll get some components. all in time though...

 

[FOSGATE JOE 10+ year member]

I guess thats what u get for buying alpine subs and not rockford!

i'm in rf guy but there subs' ****' I will never buy rf subs again:blackeye: