rofl lollll

34-36 hz

when tuned too low you will need alot more power to get those low notes

the sub will move, u just wont hear it.

say that my greezy nuts

http://www.nut-allergy.co.uk/lots_nuts.jpg

when you tune at 30hz, and play a 30hz cycle, your subwoofers should not have excursion. (now i'm talking feeding RMS power to the sub)

there should be nothing but air velocity coming from the port.

the lower you tune, the flatter the response, the more you will hear and feel the lows in music (where applicable)

often times if you are tuned to low, you lose that 'peaky' freq range in the enclosure that often makes your system 'loud'. tuning low and flat is great for a variety of music, but wont yield the 'loud' results people look for in specific music/specific systems they build.

if someone listens to nothing but house music, i'd tun to 40hz
if someone listens to nothing but chopped and screwed music i'd tune to 30hz
if someone listens to a bunch a different music, i'd tune to 35hz

hopefully you see what i'm trying to get at.

35 is what I would suggest. My rap and dubstep both sound pretty good. jalat is right in that the lower tuned you are the less peaky yoursound will be. I was tuned to 39 or 40 hz with my old box and it did amazing when banging out 43 or 50 hz, but my new box does decent in that range and destroys 30 hz. Not to brag or anything but I now call myself a SLAB rider with this box :)

hahaha, too funny.

One thing that Jalat is missing...

How low you can tune also depends on the subs ability to reproduce them frequencies. Having a flat response is great for all sorts of music but if you go too low and the sub isn't really designed for it, you actually get a gentle roll off as opposed to a flat or peaky response.

Your FiQ would be fine @ both frequencies, but if Mike says flat is 2.25 @ 34hz then I'd go 2.25 @ 34hz. Any lower might result in a dip. I'm not positive as I've never owned one or even ran its specs, but I'm almost positive he's owned one before. Sure it may play a lil lower but for the extra few hz you will loose some of the output in the rest of the bandwidth.

Tuning low is great for getting the flattest possible response (most bandwidth) but too low will begin to slope right at highest frequency down... ie. 35hz is say 144.9 tuned flat, and 32hz (tuned to 35hz) is say 143.5 by tuning to 32hz you might now hit 143.8, but now 35hz is only 144.2 and 45hz (tuned flat @ 35hz) might have changed from 145 (flat) to 144.6. :dunno:

Of course changing internal volume does help sometimes. ;)

HTH

very good point. 2.5 @ 27hz or so would be like dead flat with the Q if i remember correctly.