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Old 10-02-2010, 03:16 PM
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Question 18" AA Havoc

Hey everyone, I'm looking to build a box for my AA Havoc for my Blazer. AA recommends between 6-10 cubes ported, and I've been planning on tuning it to 32hz. I need to find out the airspace that the sub itself takes up, does anyone know?

My amp is a RF T10001BD, birthed at ~1550rms. How much power should I run to the havoc? I'll be setting my gain with a DMM, and am planning on running the full 1500 to it.

This is the box I came up with using the RE box calc (not sure if it works with non L shaped ports?)but I fear my port area might be a little large, and that the box might be too big considering I'll be running a few hundered more than RMS for the sub.

thanks,
Lunari

Box Width: 41
Box Height: 22
Depth: 33
Wood Thickness: 1
Square port height: 20
square port width: 9.5
square port length 1: 22.5
Square port length 2: 0 (re audio's calc is made for L ports)
Total port length: 37.75
square port diameter 15.553633450
square port area: 190
square port volume internal: 7172.5
square port volume displaced: 7194
box volume (Ft3): 9.83
box volume (In3): 16986
Tuned Frequency (Fb): 32.5553121367231
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Old 10-02-2010, 03:18 PM
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i would take a guess and say the sub displacement is around .25 cu ft if its more or less it wont affect anything majorly. if you plan on overpowering it why not stay around 6 to 7 cu ft?
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Old 10-02-2010, 03:23 PM
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I was wanting to efficiency of a bigger box, but if I can get the job done with a smaller one I'm more than open to it. I'm not the best at designing boxes and would love some help if someone would be willing
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