View Full Version : Enclosure design for 16 8's
05-02-2008, 11:38 AM
Looking at a clamshell design.
Considering doing it for my own.
However. The mouth, I can only get about 8x33.5....=268"s Surface area.
The speakers have a surface area of 804"s......16 8"s.
Any idea on how well it will work?
05-02-2008, 11:50 AM
What kind of 8's are they? I say bandpass if you're going to wall it.
05-02-2008, 11:51 AM
The final specs will look like this:
Re = 3.37 ohms (4 ohm nominal)
Fs = 34.9 hz
Qes = 0.5323
Qms = 6.93
Qts = 0.4943
Vas = 7.6 L
BL = 13.3 N/A
Mms = 127.7 grams
Cms = 162 um/N
Xmax = 12mm one-way linear (70% BL method)
Rated RMS Power = 200 watts
Depth = 4.25"
OD w/ gasket = 8 5/16"
Cut Out = 7"
0.280 ft^3 w/ F3 of 50 Hz (Qtc = 0.707)
0.60 ft^3 tuned to 30 Hz
F3 of 25 Hz
05-02-2008, 11:53 AM
Oh by the way, this is a trunk car, I will be attempting an IB, with the clamshell front.
going with clamshell because of space, I just don't have it.
05-02-2008, 11:57 AM
What are the rules and things to look out for in a clamshell? Do you need the opening/mouth to be as much surface area as the cones or what?
05-02-2008, 11:59 AM
that's what I'm not sure about.
I was told it'd at like a bandpass, and I had enough surface area that each 8" would have something like a 4x4" port.
05-02-2008, 01:10 PM
05-02-2008, 01:14 PM
sundown 8s huh?
05-02-2008, 02:30 PM
Someone that knows something about this please chime in! I am curious to know some things about clam-shells since it is more than likely going to be my next setup as well.
BTW how much power are you going to be running to the 8's?
05-02-2008, 02:43 PM
I will be running 1 or two sundown 3000D's
soo... anywhere from...
I can wire them to 1 ohm, or .25 ohms. or 4 ohms
8000 watts/ 500 each @ 1 ohm strapped
3200 watts/ 200 each @ 4 ohm strapped
kill 1 amp @ .25 ohms and get maybe 5000? with 312.5 per speaker.
Run 1 amp @ 1 ohm, and get 3000 / 187.5 to each speaker.
Rated 200, has been run 400, and burped at possibly 800.
05-02-2008, 03:08 PM