View Full Version : Need Veteran Assistance

02-09-2007, 01:35 AM
Well there comes a time when you want to learn to do thing yourself. I am about to het a 15" FI Q, and here are the specs on that:

Fs: 25.9 Hz | 24.9 Hz
Re: 0.7 Ohms/coil | 1.4 Ohms/coil
Qms: 5.64 | 5.72
Qes: .54 | .54
Qts: .49 | .49
Mms: 257g | 279g
Cms: 0.15mm/N | 0.15mm/N
Sd: 810cm^2 | 810cm^2
Vas: 135 l | 135 l
Spl: 88.2dB 1W/1m | 87.7dB 1W/1m
Bl: 10.4 N/A | 15.1 N/A
Xmax: 27mm
Rms: 1000W
Sealed box: 2-2.6 cuft
Ported box: 2.8-4 cuft @ 28-33Hz
Sub OD: 15.625
Cut ID: 14.125
Mounting depth: 8.500
Displacement: 0.19cuft

Here is what I got on my box so far:
Enclosure Type
Box Type:
Single 15" Straight Ported Standard Subwoofer Box

Subwoofer Information
Cutout diameter:
14.125 inches
Mounting Depth
8.5 inches

Enclosure Details
Dark Gray

Port Type:
Slot Port
Port Tuning:
31 Hz
Port Dimensions:
16.125 x 2.125 inches (Height x Width)(port length is not displayed)
Port area:
34.27 square inches
Number of Ports:
Net Internal Volume:
2.8 cubic feet
Port Volume:
0.72 cubic feet (includes displacement of port materials)
Subwoofer Displacement:
0.19 cubic feet per subwoofer
Total Internal Volume:
3.71 cubic feet
Number of Terminal Cups:
1 per subwoofer
Front Baffle:
Single-Layer Front Baffle - 3/4" Thick
Box Dimensions:
26.625" (w) x 18" (d) x 17.625" (h)

Here's what I have for actual material:
Panel Dimensions Qty Type
A. 26.625 x 18 (2) Top/Bottom
B. 26.625 x 16.125 (1) Back
C. 23.25 x 16.125 (1) Front
D. 16.5 x 16.125 (1) Left Side
E. 17.25 x 16.125 (1) Right Side
F. 14.375 x 16.125 (1) Port Section #1
G. 10.4375 x 16.125 (1) Port Section #2
H. .5 x 16.125 (1) End Spacer

:greedy: LOL, how does this look? I have done a couple of boxes before, but this will be my first sealed one and I see now that they are a pain in the but to assemble right.

02-09-2007, 01:36 AM
My badd, my first vented one.

02-09-2007, 02:11 AM
What are you asking exactly? You're missing port length BTW. Is that what you need from us?

And be more conciece next time. For example, we don't need to know that you are using 1 terminal cup per sub. A couple pics using sketchup would have given us all that information without all the text.

02-09-2007, 02:20 AM
What exactly are you asking? It looks nice to answer your question.

Wherd you get all that info from? Just in the other post you seemed totally clueless. I'm guessing you copied and pasted that from somewhere. Looks too organized for you.

Probably lookin at a port lenth of ~21 inches.

02-09-2007, 08:10 PM
I was given a site from one of the guys at the firehouse to go to and put in my max dimensions. I forgot exactly which. BTW, the port length is listed :16.125 x 2.125 inches (Height x Width)

02-09-2007, 08:12 PM
**** bholtmeier why don't you just say I'm stupid or something. I ONLY asked about the port hole size in the other thread, nothing else. If you notice, I said that I have done a box before, just never ported.

02-10-2007, 03:39 AM
I'd say to build it on your computer first, then post up a pic. Thats a ton easier for us then reading all that stuff.

02-10-2007, 03:42 AM
a good ported box might sound good, a bad ported box is gonna sound krap 4 sure.if you dont have good boxbuilding skillz id get someone to build it for you.

02-10-2007, 08:53 PM
I am going to make it in a sealed box instead, just to see how it sounds. I have made a couple of sealed boxes before, and they have been very simple to construct. I have noticed many people on here telling me not to make a ported box myself, and I guess I have no choice but to take the advice.