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18" FI Q box

 

Gold Member
Username: Shortysetnies

Rock Vegas, NC US

Post Number: 2055
Registered: Mar-06
Im about to start building a box for a friend and hes getting an 18" FI Q. He wants it o be 8cu ft at 28hz... Hes looking for SQL that hits hard. What would you suggest for that box? I was thinking 32-34 but I have never messed w/ the Q. FI reccomends 28Hz but that sounds low. Any input? Thanks
 

Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 6204
Registered: Jul-06
I would do what the manufacturer recommends, that is usually what works best.

28 hz is low but not unheard of for car audio, especially for an SQ sub like the Q.
 

Gold Member
Username: Shortysetnies

Rock Vegas, NC US

Post Number: 2056
Registered: Mar-06
Do they suggest that for straight SQ or SQL?

I know people up here have them. What do you have them tuned to?
 

Gold Member
Username: Andrew571

Stillwater/Edmond, Oklahoma USA

Post Number: 1447
Registered: Oct-05
I did 32 Hz for my Q and it still destroyed the lows. I wonder how it woudl have been @ 28 Hz....

I say shoot for something in the middle
 

Silver Member
Username: Kingandsons07

Lincoln, Nebraska U.S.A

Post Number: 657
Registered: Feb-07
i have my mine at 32hz right now and it sound pretty good
 

Gold Member
Username: Shortysetnies

Rock Vegas, NC US

Post Number: 2057
Registered: Mar-06
so something like 30 maybe?
 

Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 6207
Registered: Jul-06
The size of the sub matters...... if Fi says 28 for the 18" then do 28
 

Gold Member
Username: Livin_loud

COD4 Addict

Post Number: 2214
Registered: Jan-06
i have mine at 30hz with 7cuft and love it :-) pounds the lows like a champ and sounds great doin it
 

Gold Member
Username: Tejcurrent

Post Number: 1091
Registered: Apr-07
Id do 28-30, whatever suits the buld easiest. It is an SQ sub so it was designed to sound best tuned lower. And as far as SPL, it's an 18 with 1000 watts on it, I'd hope it had some thump :-)
 

Gold Member
Username: Mike11202

DD9515G VFL 200.1 = : , Sewell, NJ US

Post Number: 1302
Registered: Nov-06
When I had my 15" Q for SQL I had it in

4.17 cu ft. @26.7 hz
 

Gold Member
Username: Mike11202

DD9515G VFL 200.1 = : , Sewell, NJ US

Post Number: 1303
Registered: Nov-06
http://smg.photobucket.com/albums/v407/mike11202/?action=view&current=MOV05439.f lv

http://smg.photobucket.com/albums/v407/mike11202/?action=view&current=MOV05440.f lv
 

Gold Member
Username: Shortysetnies

Rock Vegas, NC US

Post Number: 2060
Registered: Mar-06
Ok, I guess I will do 28 and see whats up then. Thanks guys

/thread
 

Gold Member
Username: Killerzracing71

Fredericksburg, Virginia United states

Post Number: 1952
Registered: Aug-05
REVive this thread my email i got from scott


The T1000 seems to bench out at 1400 or so Watts... which is about where the BP option comes in handy. If you have things setup correctly you can probably get away without it... or if you are really hard on systems and push them all day, it would be a wise choice.


Thanks,
Scott
Fi Car Audio
----- Original Message -----
From: me johnson
To: Sales Fi Car Audio
Sent: Monday, December 10, 2007 6:51 AM
Subject: Re: FI Q 18 enclosure specs


yeah i hear ya.... i think i might stick with 28hz...... i like low end.... but when i put it in win isd.... it gave me a curver that pretty good..... but whats the BP option...... doesnt it give an extra 400-500 watts or so???? do i need it for my T1000??

Sales Fi Car Audio <sales@ficaraudio.com> wrote: At 32Hz you get a bigger hump in the 35-50 range, Id rather tune it lower and deeper for a flatter response overall and a fatter bottom octave. Definitely personal preference... as we do have people that swear by a 45+Hz tuning for daily. I like things lower and deeper. It will still have a very solid mid to it as well.


Thanks,
Scott
Fi Car Audio
----- Original Message -----
From: me johnson
To: Sales Fi Car Audio
Sent: Saturday, December 01, 2007 6:05 PM
Subject: Re: FI Q 18 enclosure specs


Rf T1000bd stock elec so around 1.2k or so i beilive...... but i cant fit 12 cubes now i found out...... i want to be able to see out of my window and that will call for a taller box....


my next quetstion will it be a bad idea to tune it to 32hz.... 10 cubes

or just stick with 28hz..... but i now it will be a large increase in DB with a higher tuning....

i guess its just personal preference....

Sales Fi Car Audio <sales@ficaraudio.com> wrote:
With 12cuft tuned to 28Hz you will have a real strong bottom end with a bump in the 30-40 range as well. How much power do you have for it?


Thanks and have a good weekend,
Scott
Fi Car Audio
----- Original Message -----
From: me johnson
To: sales@ficaraudio.com
Sent: Thursday, November 22, 2007 12:20 PM
Subject: FI Q 18 enclosure specs


Is 12 cubes to much for that sub... i want that sub to go low real low im tuning it to 28hz its going in a caprice wagon
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