sub box math, am i doing it right?

k, well i plan to start building this box some time this coming week. im picking up a new amp for my mids/highs tonight so with luck the sub wont over power everything... i was thinking of using a sealed sub in my truck tomororw to find the optimal HZ that my cab resonates at and then tuning my sub box to that frequency. does that make since? is it worth doing?

na, if you want to measure the resonance of your cabin then you need to use a source with a known response so that you have something to compare it to. the sub woofer and box will have its own resonance peaks and you need to know which peaks came from which source.

ok, here it is. a fully built and reenforced box as i intend to build it. only missing routered edges and fiber glass in the cornors. what do we think of this guy? is it ready to build? album of design

ncc74656 wrote: ok, here it is. a fully built and reenforced box as i intend to build it. only missing routered edges and fiber glass in the cornors. what do we think of this guy? is it ready to build? album of design

Dead link... No workie...It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

i just clicked it and it worked fine for me. ill post it again here: https://imgur.com//a/Qgmbk#0 https://imgur.com//a/Qgmbk#0

That bracing is certainly better than none at all, but seriously... BRACE IT! Did you see the way I brace a 10" driver?!? You're using a MUCH larger driver, and a vented enclosure to boot! More bracing. Seriously. More.It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

I have no idea why your copy/paste process is adding additional slashes, but it is... Here's what he's trying to show... ::::EDIT:::: Never mind... the servers are filtering the address... Copy and paste this: https://imgur.com/a/Qgmbk#0It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Here are a few examples of bracing, most of it proper. Linky And as you scroll down, you'll see a few examples of very poor bracing, especially the carpet-covered pre-fab enclosures with none at all. Those are certain to disappoint.Support the12volt.com

ok, so is the dynamics of air flow over the bracing an issue? it looks like nearly half of the space in the box is taken up by "bracing" what if i used steel mounted to the sides of the box instead of wood. i would need less of it to obtain the same rigidity right? im just worried that ill have to double the size of the box seeing as id be taking up what seems to be close to 35% of its volume by wood. at that rate id be at 5.2 cubic feet instead of 8...

At the frequencies you'll be running, no. Air flow will be no issue at all. As far as using steel vs. wood? Ummm... Never tried that, but I can't say it wouldn't work. All you are really looking for is rigidity. Honestly, though...? I'm betting you'll see that if you use a space-frame like the pics are all showing, you'll be displacing FAR less than you think.It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."