10" Compact Car Sub

[wogg]

Greetings builders! I've been occasionally building speakers and using Parts Express for a very long time, oddly enough I've never posted here. First off, there are some excellent woodworkers in here, well done!

I recently finished a new subwoofer build for a new to me car and thought I'd share. I wrote up the whole thing on my site, with the intention of it being a high level overview for those curious about speaker building. I'm sure this group would have some critique of some of my general speaker building information. It's not intended to be super in depth, just a beginner's guide.

Check it out here: http://woggmusic.com/the-art-of-do-i...peaker-design/

The sub is a single cubic foot slot ported enclosure for a Dayton reference series HF 10".

[thekorvers]

Re: 10" Compact Car Sub

Nice write-up!

[wogg]

Re: 10" Compact Sub

I'm removing "car" from the title, since the approach was to design the sub for a room, ignoring car interior boost. The interior boost serves to give me oodles of headroom and extension from the in room 30Hz F3 down well below 20Hz.

Here are additional details and pictures from my site, so you don't have to follow a link to see the write up.

The cabinet was modeled for a single cubic foot of internal volume with a slot wrapped around the back

I don't have a table saw or much show space, so all cuts were done on the ground with a skill saw and clamped straight edge

The box was incrementally assembled with the internal walls of the slot port dropped in the outside walls and glued / clamped in place.

I made a custom grill out of MDF with expanded sheet metal to protect the driver in the car.

(out of images to add locally)

I didn't graph a sine sweep, but tuned it using 1/3 octave RTA. All measurements were in car.


The sine sweep with the SPL meter was flat below 20Hz, and capable of 110dB from 35Hz up, and 100dB at 25Hz without any distortion of the wave visible on the scope.

I've been working on a single cube box for a smallish stereo listening room and can't seem to come up with anything as good as this one.