Find unknown T/S parameters

[Pinhead-227]

I was given a 15" driver that had some very minor cone damage. A little glue and it works like new. The problem is, it doesn't have an enclosure. I would like to build a ported cab for the speaker but I know virtually nothing about this particular woofer. It seems to work pretty well down to about 25 Hz; I hooked it up to my amp/receiver and played some sine waves through it.

Since I don't have any equipment, how would I find the T/S parameters to build the properly tuned box? Can I simply build a tuned enclosure at a low frequency such as 20 Hz and expect the woofer to sound decent?

The driver came out of a JBL MS115 full-range cab.

[Mike P.]

The JBL MS115 used the 2032H woofer. The parameters can be found here:

http://www.thielesmall.com/database....orm=0&order=X#

[Pinhead-227]

So just by glancing at those specs this would be a terrible subwoofer, eh?

EDIT: AJ Design software concurs.

[ISLAND1000]

Mike P. wrote:

The JBL MS115 used the 2032H woofer. The parameters can be found here:

http://www.thielesmall.com/database....orm=0&order=X#

Another nice "bit of help " by the admin. Mike. Way to go Mike.
To the OP, yup the driver will make a poor sub. It WILL make a good midrange however.

[Mike P.]

So just by glancing at those specs this would be a terrible subwoofer, eh?

Yes, the Fs of 57 and the Xmax of 6.35 mm say it all.

[Pinhead-227]

Thanks again Mike; you've been a real help!