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Discussion Starter #1
So I'm looking to port an enclosure I purchased off CL for my home audio setup. I have TWO Dayton Audio RSS315ho-44 DVC 12" HO's which will be powered by my 240wrms plate amp @ 4ohm.

The enclosure is a slant(wedge 2) dual sealed enclosure with seperate chambers.

Dimensions are:
34.625"W X 11.9375" H1 (Bottom Height) X 9.25" H2 (Top Height) X 12.625" D
Thickness = 5/8" MDF.

I figured my subs will get 0.959 cuft. each. If I go ported, I was thinking a 2" flared port in Each chamber @ 9.35" long will give me 30hz, but that would leave me with only ~1-2" from the wall depending on what sides I cut into. I am worried about port noise, especially if I throw more wattage at them.

If someone can check in bassBox or winsid, I'd like to see what has a better frequency response and higher output; sealed or ported (and what Hz is best). I want to get low for movies, but still sound good for music (rock and rap). Or tell me what size port and length I should get.

Here is my design (the slant is not that prominent):


The enclosure I will be stripping down, sand, and paint or wrap to appear like the setup below.




Here are my driver parameters:
 

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For that small of a box I would suggest you stay with them sealed and do not try to port the box! They would perform well and you could try with some EQ to lift up the low end. :T

There are a few issues with porting that can't be fixed in that small of a box. The 30 Hz tune is much too high for movies/HT content, you could easily bottom out the subs without an HPF/subsonic filter. The 2" port is way too small for a 12" subwoofer, you would hear chuffing, probably severely. You also don't have enough spare cabinet volume for a bigger port or lower tune.
 

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Discussion Starter #3
For that small of a box I would suggest you stay with them sealed and do not try to port the box! They would perform well and you could try with some EQ to lift up the low end.


There are a few issues with porting that can't be fixed in that small of a box. The 30 Hz tune is much too high for movies/HT content, you could easily bottom out the subs without an HPF/subsonic filter. The 2" port is way too small for a 12" subwoofer, you would hear chuffing, probably severely. You also don't have enough spare cabinet volume for a bigger port or lower tune.

I will leave it sealed then...sand and refinish the enclosure, then put some isolation feet or pads underneath. As far as EQing it, do I need an external equalizer? I'd have them running off my plate amp connected to my Yamaha HTR59-60. What recommendations do you have for me to lift up the low end?

Also, should I add polyfill? If so, how many pounds?

Thank you in advance
 

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It looks like your plate amp supports custom bass boost and cutoff by changing resistors. That isn't a super easy task, but it is doable. There might be some youtube videos for similar amplifiers that show the process. I would recommend the +3dB at 24-30 Hz, which would lower the anechoic f3 from 43 Hz to 34 Hz. Your subs will have xmax to spare in case you want to upgrade your amp in the future. Wire them in (4+4)||(4+4) for a total 4 ohm load.

WinISD file is attached

It should be a nice sounding sub!
 

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Discussion Starter #6
It looks like your plate amp supports custom bass boost and cutoff by changing resistors. That isn't a super easy task, but it is doable. There might be some youtube videos for similar amplifiers that show the process. I would recommend the +3dB at 24-30 Hz, which would lower the anechoic f3 from 43 Hz to 34 Hz. Your subs will have xmax to spare in case you want to upgrade your amp in the future. Wire them in (4+4)||(4+4) for a total 4 ohm load.

WinISD file is attached

It should be a nice sounding sub!
Thanks for the help man! Can't wait. I got it sanded down and ready for primer and paint.


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