Does larger sub necessarily mean better or deeper bass?

[mrpep]

Should an 18" provide lower deeper bass than a 10 or 12 or 15? I realize the box will have alot of say so as well but in general should a 18" in a well built box give deeper / lower bass than a 10 or 12 etc ?

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[Hertz Mafia]

It won't be deeper but it will be louder because more come aera so being louder it could SEEM deeper. Lol if your picking up what I'm putting down

 

[blazian87 10+ year member]

Should an 18" provide lower deeper bass than a 10 or 12 or 15? I realize the box will have alot of say so as well but in general should a 18" in a well built box give deeper / lower bass than a 10 or 12 etc ?

Not necessarily. As you know, most of it is based on box specs and the sub you're using. If you're comparing them all in a sealed box, then yea the 18" will definitely have more lower end. Some subs are meant for lows like sundown Z's or Fi Sp4, etc.. I'm running a single 10" B2 REF in a T-line right now that hits lower than alot of 12" and 15" setups in sealed and prefabs and even some ported setups I've owned before. I have mine tuned to 28hz with no SSF so that's why I can hit so low. If u want deep bass tho, you need to tune in the 30's going ported. My response is more flat and has a ton of bandwidth. If you're comparing them all in the ideal ported enclosure, the 18" will give you more output of the range that it hits. So it may possibly be louder with lows but not necessarily hit lower. So many variables, you're gonna have to be more specific with your plans.

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[mrpep]

ok, looks like ill stick with my 12 then ... it seems to be ideal I guess. Now, i did open a thread for a better box. I want those real real quiet lows , the box I have now is tuned to 29hz not sure what the limit on this sub I would have to see specs. Its a jl w6v3 12.

 

[Hertz Mafia]

Wtf is real real quiet lows?? So u want zero low end?

 

[LosIsATool 5,000+ posts]

The word of the day is displacement. A 12 with 30mm of excursion could have more output then a 18 with 15mm of excursion. All variables aside.

 

[jRi0T68]

The word of the day is displacement. A 12 with 30mm of excursion could have more output then a 18 with 15mm of excursion. All variables aside.

Not doubting you, but can you clarify how, when an 18 is over twice the cone area of a 12? What am I missing?

 

[LosIsATool 5,000+ posts]

Not doubting you, but can you clarify how, when an 18 is over twice the cone area of a 12? What am I missing?

Excurrision. It takes cone area and excursion to equal displacement. More displacement means more output.

 

[jRi0T68]

Excurrision. It takes cone area and excursion to equal displacement. More displacement means more output.

Right, but displacement is a measure of volume, which would be cone area x excursion. You'd need roughly 2.5 times the excursion of the 18 for the 12 to have equal displacement of the 18, because the 18 has roughly 2.5 times the cone area.

 

[LosIsATool 5,000+ posts]

Right, but displacement is a measure of volume, which would be cone area x excursion. You'd need roughly 2.5 times the excursion of the 18 for the 12 to have equal displacement of the 18, because the 18 has roughly 2.5 times the cone area.

18 is just a hair more then 2 12s. Again, there's a ton of variables. You also have to look at power handling/coil diameter and height. Higher power speakers tend to have higher xmax. It's possible is all I'm saying.

 

[jRi0T68]

I'm aware that it is. I just wanted to make sure there wasn't something I was missing when accounting for displacement. In a real world scenario, it's likely that a 12 with 30mm xmax would have overall better performance than an 18 with only 15mm, because it's likely got better power handling and more motor force, etc.

 

[germanyt 10+ year member]

More moving mass generally means lower lows but any 10 or 12 can play 20hz. They just don't do it with the authority of an 18.

 

[Papermaker85 5,000+ posts]

More moving mass generally means lower lows but any 10 or 12 can play 20hz. They just don't do it with the authority of an 18.

the only correct answer.. lol

 

[Hertz Mafia]

ok, looks like ill stick with my 12 then ... it seems to be ideal I guess. Now, i did open a thread for a better box. I want those real real quiet lows , the box I have now is tuned to 29hz not sure what the limit on this sub I would have to see specs. Its a jl w6v3 12.

1 w6 18" > 1 w6 12"

2 w6 12s > 1 w6 18"

 

[mrpep]

Wtf is real real quiet lows?? So u want zero low end?

yes I want silence to come out of my subs...