AVS › AVS Forum › Audio › DIY Speakers and Subs › DIY for a college student. Dayton RSS390HF in a ported box
New Posts  All Forums:Forum Nav:

DIY for a college student. Dayton RSS390HF in a ported box - Page 2

post #31 of 40
2/7/13 at 12:00am
Thread Starter 
Okay so my current plans are:

Dayton RSS390HF
CSS PA500 linked above
~6.5 cu ft. I'm going to aim for this but not complain too much if it ends up a little less due to bracing, ports, etc.
2, 23" ports
Tuning to 20 Hz which gives me this SPL


A couple questions:

What order is the subsonic filter? Can I change that, or will I have to live with it in terms of what it would do to rear port velocity and excursion, which is barely above the max. I doubt I'll ever raise it above even 90 dB, so I'm not too concerned with that.

Can I put the ports front facing? I think that would be a lot better looking, but would someone sitting near the sub feel the air moving?

What sort of bracing should I use? Minimal to increase volume?
Reply
Reply

AVS Top Picks

post #32 of 40
2/7/13 at 7:06am
The filter should be butterworth (which is 2nd order), you can not adjust it. Xmax is the maximum clean excursion, it is not the maximum limit, a hair over is fine. The ports can go where ever you want, just make sure you give them proper clearance. A 4" ports needs 4" of space between it and the back cabinet wall, so the box should be at least 27" in the dimension the ports are facing unless you want to mess with elbow fittings. Bracing simply needs to tie the panels together, here is what I'm doing with the sub I'm building right now



More 2" strips will be added for side to side bracing, but you get the idea. No need for a bunch of crazy looking full shelf panels. Getting the braces closer to the center of a panel is better, I'm going to have passive radiator's in my build.
Reply
Reply
post #33 of 40
2/7/13 at 9:56am
Thread Starter 
Awesome thank you! One last question: does the CSS amp you linked come with the 25 Hz boost or does my receiver provide that?
Reply
Reply
post #34 of 40
2/7/13 at 10:03am
Quote:
Originally Posted by edlittle View Post

Awesome thank you! One last question: does the CSS amp you linked come with the 25 Hz boost or does my receiver provide that?

The amp provides the boost.

I think you have a really good plan here. Should be an impressive sub and will be a huge upgrade over what you have now smile.gif
Reply
Reply
post #35 of 40
2/7/13 at 10:12am
That css amp does not have boost. You do not want boost.
Reply
Reply
post #36 of 40
2/7/13 at 10:18am
Thread Starter 
Sounds good! I'm just going to aim for the biggest box I can make up to about 9 cu ft and then see what happens! Shoot I forgot: do I need filler or insulation of any kind?
Reply
Reply
post #37 of 40
2/7/13 at 10:23am
Lining the walls with something is always a good idea, helps prevent internal sounds from escaping. An open cell foam mattress topper is a cheap option.
Reply
Reply
post #38 of 40
2/7/13 at 10:43am
Jay1 - just curious, what program are you using there?? It doesn't look like WinISD..
Reply
Reply
post #39 of 40
2/7/13 at 3:18pm
Its the newest version of winisd, got it from their facebook page.
Reply
Reply
post #40 of 40
2/7/13 at 10:50pm
Quote:
Originally Posted by Jay1 View Post

Its the newest version of winisd, got it from their facebook page.

Thanks, I didn't realize there was another version over at the Facebook page.. tinkeriing with it now, very nice. smile.gif
Reply
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: DIY Speakers and Subs

AVS Top Picks

AVS › AVS Forum › Audio › DIY Speakers and Subs › DIY for a college student. Dayton RSS390HF in a ported box