please stop lol. this is crazy. Sq refers to recreating music accurate to the source material. that's it. you're goals dont give a shit about SQ. You're looking for the loudest sub that doesn't sound like shit.

download winisd, read a how-to guide, and model the subs.

 

will it model how the subwoofers will sound in the car? no (doesn't acount for cabin gain), but you can at least compare sub vs sub. 

Edited January 29, 201411 yr by lithium

I would say when you tune to 32Hz, It gives you the ability to play about 10Hz below tuning and sound well and also get good mid range bass from the woofers. That's why they recommend this tuning in their cut sheets. The Fs of the Q 12 D2 is 34, so I wouldn't tune much farther below 32.

what? why? 

lithium what do you mean what/why I'm not sure what your referring to

to cloud77's comment about tuning below Fs which i quoted. 

My bad just noticed that now. I don't believe in his saying you can play about 10 Hz below tuning and sound well but are you saying its ok to tune below the subs Fs by 3-4 Hz??

its done all the time in home theater systems. you shouldn't tune that low in car audio because most music doesn't go that low. maybe if every single song you listen to is full of sub 30hz stuff then consider tuning lower otherwise dont bother. 

 

the recommended enclosure specs from the manufacturer should be a fine place to start. 

a sub playing below tuning can be dangerous but that's why you set the subsonic filter. 

 

edit: understand that tuning below fs and a subwoofer reproducing frequencies below tuning are two different things. 

 

i was simply calling out cloud because he was making thing unnecessarily complicated and probably confusing you. 

Edited January 29, 201411 yr by lithium

I see what your saying. My main range is 30-32 Hz on music which is why I would like to tune to 31

tuning to 31 hz will be fine. and if you haven't modeled a sub before, you would see that one or two hz in either direction doesn't change much anyways. 

I would say when you tune to 32Hz, It gives you the ability to play about 10Hz below tuning and sound well and also get good mid range bass from the woofers. That's why they recommend this tuning in their cut sheets. The Fs of the Q 12 D2 is 34, so I wouldn't tune much farther below 32.

what? why?

From Fi:

Q 12 – We recommend using a sealed box in the neighborhood of .8-1.5 cubic feet of volume.

Ported box we recommend using 1.8-2.5 cubic feet @ 28-33Hz (I personally think that a 32 Hz tuning is optimal, and has the most output and is still the most musical daily driving). Use 12-16 square inches of vent area per one cubic foot of enclosure volume.

http://www.soundsolutionsaudio.com/forum/topic/44520-q-series-cut-sheets/

 

 

I would say when you tune to 32Hz, It gives you the ability to play about 10Hz below tuning and sound well and also get good mid range bass from the woofers. That's why they recommend this tuning in their cut sheets. The Fs of the Q 12 D2 is 34, so I wouldn't tune much farther below 32.

what? why?

 

From Fi:

Q 12 – We recommend using a sealed box in the neighborhood of .8-1.5 cubic feet of volume.

Ported box we recommend using 1.8-2.5 cubic feet @ 28-33Hz (I personally think that a 32 Hz tuning is optimal, and has the most output and is still the most musical daily driving). Use 12-16 square inches of vent area per one cubic foot of enclosure volume.

 

 

read your sentence that I pointed out. you're implied relationship is a false