2 8'' vs 1 12''?

[gb22 10+ year member]

I've recently been running a 12'' FI Q in a ported box tuned to 32hz, powered with an AQ1200.. I really liked the system, but really didn't think it produced the SPL i was looking for.

Now, my trunk is pretty small. The box for my Q was 2.5^3 and barely fit. I am going to be purchasing my next sub/subs soon but can't decide on what I want.

I will be doing the Big 3 to help my electrical. I have a new BRZ 1700.1 that ill use for power.

Ive been considering ordering 2 SA-8 V2 D2, wiring them to 2 ohm(1200w), and putting them in a ported box tuned to 32hz. Ive never heard nor ran 8 inch subs, so how would their spl output compare to a single 12?

My other options include a single 10 or single 12, probably SSA. I want a good mix of great low end power, SQ and SPL

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[TaylorFade 10+ year member]

Ouput between the 2 will be very close. But the box for the 8's will be about half the size.

 

[Kangaroux 5,000+ posts]

At only 2 ohms for the 8's I would say the 12 will be louder.

 

[neonrt 10+ year member]

Really depends on the install, but the 12 has more cone area, and the fi-q's got fairly loud.

I would go perhaps 2 -10's if you are looking to downsize but perhaps go sealed to save space.

On a side note i would bet the 12 fi-q would be significantly louder

 

[travicles 10+ year member]

If you say you're ordering the D4's then they wire down to 1 ohm not 2 ohms. Anyways though, the output should be pretty close. If you are strapped for space, I guess 2 8's aren't a bad option. If you're really wanting more output, I suggest 2 10's.

 

[gb22 10+ year member]

If you say you're ordering the D4's then they wire down to 1 ohm not 2 ohms. Anyways though, the output should be pretty close. If you are strapped for space, I guess 2 8's aren't a bad option. If you're really wanting more output, I suggest 2 10's.

Im just not sure if I could even fit 2 10's in a ported box back there though lol. If it was sealed, yes, but ive never ran sealed before

 

[AnthonyO 10+ year member]

Yeah, everybody has already said it. The 12 has a little more cone area but I would say they are within 1or2 db of each other. Now heres something no one has recommended yet, so I'll be the first. How about 3 8's dual 2ohm series to 4 ohm each and parallel down to 1.33ohm at the amp. More cone area than the 12 and still smaller enclosure.

 

[fasfocus00 5,000+ posts]

Yeah, everybody has already said it. The 12 has a little more cone area but I would say they are within 1or2 db of each other. Now heres something no one has recommended yet, so I'll be the first. How about 3 8's dual 2ohm series to 4 ohm each and parallel down to 1.33ohm at the amp. More cone area than the 12 and still smaller enclosure.

i've have 3 8s a few times, very surprising how well they sound. done 4 8 a few times too. i have to with anthony on this one and go with 3 8s or even 4 8s.

 

[gb22 10+ year member]

Thats interesting.. hadnt considered doing 3 but sounds like a good idea. That would give them their rms500w apiece too