please help with using winisd to model skar txl 15

[Joe X]

This driver looks good at 4 net @32Hz 70 square inches of port area, here's port airspeed::

As is often (but not always) the case port area per cube provides a good guess 4x16 = 64 square inches.

[mike-g]

Is that a better program than winisd,I couldn't get port velocity that low,with cross section around 70sqin,just curious

[mike-g]

And thanks for taking the time to do that,I almost have it down to were I can model,and then design but not quite lol

[mike-g]

Ive definitely stepped up from the first time you helped me,and my two pioneer 12,and no idea how any of this works lmao

[Joe X]

Is that a better program than winisd,I couldn't get port velocity that low,with cross section around 70sqin,just curious

Check out how to enter data on WinISD and make sure the parameter units you enter are the same as the program is asking:

http://www.hometheatershack.com/forums/diy-subwoofers-general-discussion/6330-winisd-pro-tutorial-download-detailed-guide-how-use-winisd-pro.html

Here's some of the info you want to know from that thread:

This is the recommended method for entering driver parameters [if at any point you need to change the unit of a parameter simply click on the displayed unit and it will change]:

1. Enter Mms and Cms which results in Fs being calculated. If Mmm and Cms are not known enter Fs. If Fs and Mmm or Cms are known enter Fs and the other known value.
2. Enter Sd, Bl and Re. This will result in more auto calculations being made, but Qms and Qts will be blank. If Re is not available, go ahead and enter Sd and Bl.
3. Enter either Qms or Rms, whichever is available, generally Qms is available.
4. If Mms and/or Cms were not provided for input, now input Qes. This will cause some other fields to auto calculate.
5. Enter Hc, Hg and Pe if available. These are not required, however Pe (RMS Power Rating) will give a good idea of how much power signal input to model with.
6. Enter the number of voice coils. NOTE: Drivers using dual voice coils may cause the Bl and Re parameters to change when changing the connection wiring from parallel to series. Be sure to monitor these when changing the connection option, but WinISD should automatically change these values properly.
7. Correct Znom (nominal impedance) if needed. Many times this will change to 6 and should be 2 or 4... or the ultimate resistance (in ohms) you intend to run based on the voice coil configuration and your connection setting (parallel or series).
8. Enter Xmax and any other missing parameters if known and continue. DO NOT change any of the blue auto calculations. If they are only slightly different, this is okay. If they are off significantly, contact the manufacturer or vendor of the driver.

[mike-g]

I figured out how to enter the parameters and have them correct it's just I'm not understanding what's good when you're looking at the graphs and stuff like that,I'll reread it ty