its called WinISD Pro

Download WinISD Pro

its free and works well i promise its not a virus or anything just a helpful program

it is pretty cool...i tested out my computer speaker response with the tone generator,,,it was pretty neat...my computer sub hits best at 70 - 80 hz.

you should try Bassbox pro. Thats the one I use. There is also LSPcad, and Calsod. Calsod is a steriod injected ultra,...ultra,... ultra high end $3000 program that allows you to fine to the box and crossover design to a new level. You can modify EVERYTHING About the in car performance with it. I used to have it, but my computer crashed and I lost it. LSPcad is great too. You can get most of them free on fileshare

I myself also enjoy winisd for port measurement and tuning, another good one is leap.

LEAP (Loudspeaker Enclosure Analysis Program) is the God of all design programs. You can accomplish system modelling in ways never before imagined. However, it assumes that you've got a lot of advanced knowledge in your head to begin with. The wise wizard of audio design
[img]graemlins/bow.gif[/img] (HCD)showed me a thing or three with LEAP that made me toss my copy of CALSOD into the furnace. Expensive; HUGELY. Astonishing; absolutely. Potential for learning; Unlimited.
Go to the LinearX website, and check out the demos.
Linear X Leap 5.0

just talked to hcd at the vac a couple of weeks ago, when he speaks i stop whatever im doing and listen for as long as he is willing to talk

pardon my stupidity.. but who/what is HCD?

he is talking about howard doctor from the vancouver audio clinic, speaker designer and engineer for many companies

Too true, Dave. Listening to Howard for 10 minutes will impart more useful information than you could extract on your own within the average, say, year or so. You've really got to up your game to keep pace with the man. He's forgotten more than we'll ever know.