what does size matter of the sub?

[ChevyRidinLow]

generally speaking bigger subs can handle lower frequencies.

the size doesnt mean they play lower tho, its just a coincidence that they make larger woofers to play lower. although the more air movement there is would have an impact on noticability to the lower frequencies because it would be louder but if they are similar in making then they will most likely sound nearly identical

[Buck]

not really true at all, the size doesnt mean they play lower.

Look at the Fs of smaller subs, and watch it go down as you increase in size.

[jtomsic]

i 2 like the bigger subs.

[ChevyRidinLow]

Look at the Fs of smaller subs, and watch it go down as you increase in size.

yeah, i realized what i said wasnt what i meant. check it again.

[lowriderram_95]

i said thats a general idea, you really expect to explain the ENTIRE break down of speaker response and cone area, and low freq's and so on to someone asking the question he asked? i mean really speak to him in terms he will understand.. lol

good cover ''11er, there should really be a test or somethin for these people......

[Chriszle]

Subwoofer size and Fs are only two aspects as to how low a sub will play, and not even the most important. Box design is the most important factor in how low a sub will respond.

[T.I.K.]

Serious response, larger woofers (cone area wise) will be louder on the same power vs. one will a smaller cone.

Larger woofers usually have a lower Fs, lows FTW.

They also have a higher Mms, which means they may be a little, if you will, sloppier than smaller woofers.

Most of these things can be controlled by enclosure design, as well. So I like big woofers.

18 inches or bust, bitches

[RAM_Designs]

Within the same sub line using the same motor, the larger sub is going to have a lower Fs, higher Qts, higher Vas...basically the larger it gets the better it will work in a sealed box compared to its smaller counterparts. Some beefier subs such as the BL, BTL, etc can still maintain a lower qts and vas value that will still allow the larger sized subs to be very capable ported box woofers.

This isn't 100%, but a pretty good generality.

[Buck]

Within the same sub line using the same motor, the larger sub is going to have a lower Fs, higher Qts, higher Vas...basically the larger it gets the better it will work in a sealed box compared to its smaller counterparts. Some beefier subs such as the BL, BTL, etc can still maintain a lower qts and vas value that will still allow the larger sized subs to be very capable ported box woofers.

This isn't 100%, but a pretty good generality.

I concur. If you look at the BL 18"s EBP, it's very nice for ported.

[morespl]

Loudness is determined by alot of things not just size of woofer. If you have a 10 that is in the proper enclosure tuned closer to the resonant frequency of the vehicle with less impedance rise. The ten will be louder than a 15 on a improper enclosure tuned to the wrong frequency.

[hispls]

Assuming you are buying a properly designed woofer, have decided on a make and model, and can build a proper box, size is only relevent when deciding how much cone area you need. The tradeoffs from there are how much power you need to handle (more smaller woofers will handle more thermal power than few larger ones) and box volume (larger woofers need larger boxes to function properly).

lot of bad info here.

[RAM_Designs]

Loudness is determined by alot of things not just size of woofer. If you have a 10 that is in the proper enclosure tuned closer to the resonant frequency of the vehicle with less impedance rise. The ten will be louder than a 15 on a improper enclosure tuned to the wrong frequency.

But why assume that the larger sub is going to be in an improper install?

[audioholic]

They also have a higher Mms, which means they may be a little, if you will, sloppier than smaller woofers.

Not really true. MMS plays very little role in transient response of a subwoofer. Inductance is the biggest factor.

As I said in another thread earlier, is it fair to say heavier cars tend to be slower than lighter ones? Logic tells us lower moving mass will respond faster, so it should stand to reason that lighter cars are generally faster than heavier ones. But this leaves out some crucial details, like power applied to that mass.

[Buck]

Not really true. MMS plays very little role in transient response of a subwoofer. Inductance is the biggest factor.

As I said in another thread earlier, is it fair to say heavier cars tend to be slower than lighter ones? Logic tells us lower moving mass will respond faster, so it should stand to reason that lighter cars are generally faster than heavier ones. But this leaves out some crucial details, like power applied to that mass.

Lol just taking an educated guess.

[audioholic]

Look at the Fs of smaller subs, and watch it go down as you increase in size.

This only confirms that cone diameter is a factor in fs, not that it is the determining factor. When comparing drivers with the same motor, yes bolting a larger diameter cone to it will lower fs. But when the motor was designed, any reasonable fs could have been the target goal. This is how we can have 6" subwoofers, or 15" fullrange speakers.