Ok would it be worthwhile to create a standardized chart of max SPL at certain frequencies?

Example

10hz
15
20
25
30
all the way up to 100hz


Then test each sub in question with a test tone from a CD or from a computer and push that sub to its limit and figure out what the max spl for that sub is without going past what the sub is capable of.

Then even run a 10-100hz sweep to figure in the overall max spl at a sweep....

I wouldn't mind making the spreadsheet in Excel for us to use, the problem is I do not have all the subs like Craig, and Ear and some of the other lucky guys on this forum. Would this be helpful for buyers? Would this help to answer questions about subs and how they handle frequencies.....some of us are more concerned with certain sub aspects.

Personally for me I care alot about that low down bass from 10-40....other care more about the 30-60hz bass since more movies and more music use that...

I will no take it personal if you think this is worthless.....i'm just throwing out an idea I had and I don't know if its a good one or a bad one :D

I'd just like to see something that has the common subs we are all talking about on one sheet to compare numbers...
I'd love to see all fhe SVS and HSU (VTF and HO) subs on this list since we really spend alot of time talking about them. Of course other brands, JL, Velo, Rocket, ect would be wanted TOO since SVS and HSU are not the only dogs in the fight. :)

Absolutely yes.
I think Ilkka already has used a good standard by increasing the input stimulus starting from 90dB to whatever the sub is capable of in increments of 5dB. At 95 some subs start compressing and some at higher values. It is important to look at the compression charts too, so one can figure out when the limitations are being reached and how much farther the system can be pushed beyond the threshold of compression.

I have a call to action in the thread on "Multiple sub extrapolation".
Thanks,
-Jai

I'd like to see where all of these subs can REACH to.....for me ESPECIALLY in the 10-15-20-25hz range....whats the MOST we can get out of these subs?

Sure it would be great. But only if done under the exactly the same conditions using the same testing equipment. Otherwise, it becomes apples to oranges (or at least Gala to Delicious ;) ), just like comparing published reviews from different sources.

In the real world, it's a good idea, but not a practical one. Individual reviewers/testers don't have the resources to check all the models people might be interested in.

If you folks haven't read this Finnish subwoofer tests explained (http://www.hometheatershack.com/forums/subwoofer-tests/971-finnish-subwoofer-tests-explained.html), I recommend a read first.
If there are more people who can do this, and post their measurments, that would be great. I don't think conditions have to be exactly the same. As long as basic principles are followed (avoiding reflections, using correct calibration for mike, use the same software as much as possible) then this should work.
Measurments are measurements. When done right they will be useful.
-Jai