Interpreting WinISD results

Besides looking for a spike on the transfer function magnitude page, How would you interpret these results?

Qms 10.520,  Qts .460, Fs 22.01, Vas 3.310, DVC

I used a sealed enclosure with 2ft^3 of space.  How does that look?

I am so interested in all the technical aspects, but I still dont know what half of the stuff is that I am looking at!!

Post all parameters you have and the units of measurement, or provide a link to them.  And the woofer is DVC what? 

How was this woofer measured, with the coils in series?  These things are important.

Let it be up to the user of a program to sort through what he wishes to input first.  I wouldn't be able to do a thing with the parameters etc you mentioned.  You'll get better and quicker help by providing more info.

Man, I am sucking just a bit these days.   Here is the link, I was running the numbers for the 12dVQ with the mid insert in.

https://manuals.harman.com/INF/CAR/Owner%27s%20Manual/Perfect%20VQ%20OM%20FINAL%20(Revised%2012-2-02).pdf

I was wiring the sub on the program in parallel, sealed enclosure, .707 alignment, 2ft^3 of space in the enclosure.  Standard units of measure.

....

try this one, it is the product page, and the link is on the page.

https://www.infinitysystems.com/caraudio/product.aspx?ProdId='KAPPA+PERFECT12DVQ'&Ser=KPE&Cat=SUB

Here's a driver that exemplifies what DYohn was talking about in the article Loudspeaker Sensitivity vs Efficiency.  I used the calculator that I linked to in that article and found that although this 12DVQ is rated at a 92 db sensitivity according to the manual....the actual efficiency is much lower, and more in line with other subs.  Low insert:  87 db.  Mid insert:  85 db.  No insert:  83.75 db. 

Not quite 92 db, huh? 

gsezer, that manual gives a ton of good information on enclosure sizes and gives you ways to use the driver for multiple purposes.  If you look at the recommended enclosure sizes, you'll see that by the time you get as big as 1.25 cu ft (sealed), that no insert is used for best Q with the F3 point at 35 Hz.  With an EBP of 34, used with no insert, there is no question that this sub gets a sealed box.  I would build it just like that since you apparently have plenty of space for it, and not even look for reasons to work it up in a modeling program.

Use WinISD to work up the majority of subs on the market who give you less good information.  Or practice using it with the enclosure sizes given for the different Q inserts and get to know the program better that way.  You'll see that you have to change Qes (and therefore, Qts, so leave Qts blank for autocalculation) for each insert and without the insert.  You see they show the differences in Qes as .64, .46 and .31.  Bring up your database editor and change it in that for each insert Q, then save, then bring up "new project" so that it includes your data change.

I take it that going to a 2ft^3 box to get rid of a 2dB ripple is really not worth it.  Would you be satisfied with a 2dB ripple in your box/sub if you were not going for SPL?

After looking at it, you are right about the sensitivity.  Why would they bother to post those numbers if they know we can use a calculator to find out what it really is?  Hell, just using the calculator alone, I need to run some numbers to see what the sensitivity really is on other subs.  Maybe I need to just get a Brahma, you guys speak very highly of it in other threads!

BTW Thank you for the assistance, and your patience.  it is greatly appreciated.

Well dude, I think you got this thing nailed.  After your initial post in which I thought you might be a little bit on the clueless side (sorry, my bad!), you started to intrigue me with what you began to show.  So I worked this thing up to satisfy my own curiosity, and it looks like a 2 ft^3 box with the mid insert is the way to go.  Good work!

Here's a shot of the responses:  the lavender is 1.25 with no insert;  the white is 2.0 with mid insert;  the aqua is 1.25 with mid insert.  What you came up with looks the best.

perfect12dvq.jpg