Rumors on Sub size/ end them here

[squeak9798 5,000+ posts]

I put a baseball on a tee, like I'm 4 years old again. I take a bat and swing at a 5lb ball with a given amount of force. The ball travels a distance relative to the weight of the ball and the amount of force I applied with the bat (just trying to keep things simple here). What if we use a 50lb ball and all other factors remain constant? Do we really think the ball is going to travel at the same velocity at any point in it's flight?

What you are describing is sensitivity though.

That doesn't mean the driver won't be able to respond to the signal properly (i.e. move 50 cycles per second for a 50hz tone)....it just won't be able to move as far in each direction in order to accomplish this (if we hold power constant).

What if we replace you with the Incredible Hulk in your example? I bet then we'll be able to get that ball to fly as far........

I agree with the point you are getting at, I think, which is that inductance isn't the ONLY factor. Mass is going to affect transient response via Q and manifest itself as overshoot and ringing, etc. But inductance is going to be the limiting factor on the impulse response, not the weight.

Though it's also worth noting that even though larger cones are typically "heavier" than smaller cones...due to other factors such as the increased cone area sensitivity for the larger driver will typically be higher than it is for the smaller driver with the lighter cone.

Great thread;

http://www.elitecaraudio.com/forums/showthread.php?threadid=106037

 

[newusername 10+ year member]

What you are describing is sensitivity though.
That doesn't mean the driver won't be able to respond to the signal properly (i.e. move 50 cycles per second for a 50hz tone)....it just won't be able to move as far in each direction in order to accomplish this (if we hold power constant).

What if we replace you with the Incredible Hulk in your example? I bet then we'll be able to get that ball to fly as far........

I agree with the point you are getting at, I think, which is that inductance isn't the ONLY factor. Mass is going to affect transient response via Q and manifest itself as overshoot and ringing, etc. But inductance is going to be the limiting factor on the impulse response, not the weight.

Though it's also worth noting that even though larger cones are typically "heavier" than smaller cones...due to other factors such as the increased cone area sensitivity for the larger driver will typically be higher than it is for the smaller driver with the lighter cone.

Great thread;

http://www.elitecaraudio.com/forums/showthread.php?threadid=106037

I realized immediately after posting that it was a poorly based analogy and your clarification is perfect. What I described is exactly like sensitivity as I described (to a certain extent) in this thread:

http://www.soundsolutionsaudio.com/forum/index.php?showtopic=8375

Thanks for the clarification.

 

[stishdr 10+ year member]

wow...so far i have learned a lot in this thread, gret job by the experts //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif for all us newbs out there, i appreciate good threads

 

[Hintzyboy 5,000+ posts]

OK, I read most of this thread except for the last few posts. I understand all the stuff about the cone velocity an whatnot, but have one question. If two woofers are playing the same material and have the same excursion (or the difference is negligible), what makes one woofer able to separate notes better, like when double-kicks come into play? Is this just a product of the materials in the woofer (ie surround material, suspension, etc.)? Or am i missing something big here?