What's new

My Second DIY Sub (1 Viewer)

Dingiswayo

Stunt Coordinator
Joined
Apr 25, 2007
Messages
167
Real Name
Matt
I'm designing the enclosure for my second diy sub and I'm wondering about enclosure shape. I read about volume and port size/length as the most important aspects of an enclosure but never do I read about shape.

So let's say, at the extreme, that you have a driver with 2" clearance behind the magnet but 3 ft^3 above it. Will that really function the same as a down-firing sub with the same volume directly behind the driver?

My current design for a dual 12" sub requires 7.5 ft^3, tuned to 21.14 Hz with four 5.5" x 6.1' ports; so I thought I'd make it a triangular pillar that fits into a corner (since it's gonna be a beast). I'm wondering if I can mount the drivers to the front with lots of volume above and below them or if I should make it basically a triangular cylinder sub, with drivers mounted at top and bottom.

Also the help file for WinISD says that rear port velocity of 23 ft/sec is high. My current design peaks at 21 ft/sec at 19Hz. Does that seem acceptable and can ports with greater diameter handle greater air port velocities without noticeable chuffing?
 

Robert_J

Senior HTF Member
Joined
Aug 22, 2000
Messages
8,350
Location
Mississippi
Real Name
Robert
Flared ports are best for keeping noise down. You can go with a larger diameter but the ports will be even longer. To compare real world "chuffing" experiments, check out this site.

-Robert
 

Users who are viewing this thread

Sign up for our newsletter

and receive essential news, curated deals, and much more







You will only receive emails from us. We will never sell or distribute your email address to third party companies at any time.

Latest Articles

Forum statistics

Threads
356,955
Messages
5,127,125
Members
144,215
Latest member
kennyhoward63@g
Recent bookmarks
0
Top