focal 27a 11 sub box ideas

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=123425
Printed Date: May 15, 2024 at 9:40 PM

Topic: focal 27a 11 sub box ideas

Posted By: trdhawk
Subject: focal 27a 11 sub box ideas
Date Posted: September 09, 2010 at 10:33 AM

I am in the process of building a box for 3 Focal 27a 11" subs. I've been using Blaubox for over a decade now but am looking for a 2nd opinion on box size for this interesting driver. Here are the speaker specs and what I've modeled:

QTS: .44
FS: 39 hz
VAS: 21.43 Liters
XMax: 6mm
Cone: 20.5cm
Peak Power: 500w

From the looks of things I'm thinking a 1.25cu ft box single vented at 35hz per sub. I will be driving these guys pretty hard with an Eclipse DA7122 Monoblock so power is not a problem :)

Thanks in Adv!

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Brian Miller
Sacramento, California
86 MR2 Smallport
01 Golf Wagon VR6

Replies:

Posted By: icearrow6
Date Posted: September 09, 2010 at 12:36 PM

do one in a ported box, one in a seal box, and one in a bandpass box. That way u can't choose wrong... am i right?

LOL. don't take the above seriously.

your numbers look good. Just be sure that you have a sub sonic filter.

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Posted By: trdhawk
Date Posted: September 09, 2010 at 3:12 PM

hahahaha... Reading that after a pitcher at hooters is epic! Not a bad idea but I think it'll stick to a ported box. I appreciate the feedback and will post pics once I finish glassing my box :)

Anyone else have a bright idea? :P

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Brian Miller
Sacramento, California
86 MR2 Smallport
01 Golf Wagon VR6