T/S for old subs

[Doug]

I have some older Cerwin Vega subwoofers, approx mid 80's and was wondering if anyone would hav the Thiele / Small for them.

Thanks😀

 

[Doug]

CV subs

Whoops I forgot to give the model number. They are ATW15's and also on the magnet is C5V.

Thanks

 

[Ron E]

You will have to measure them yourself. It is tedious, but easy to do. One article on how to do it:
http://www.epanorama.net/documents/audio/speaker_parameters.html

You use your soundcard equipped computer with an audio generator program (NCHtone makes a good free one) and a voltmeter and a couple resistors.

or you can go whole hog and use a free measurement system, called Speaker Workshop (google it).

I have some AT-12's from that era and they measure Fs=20, Qts=0.16 and Vas=360L...

About all I could say about the 15s is that you should expect low Q and High Vas - that's how they get the high sensitivity.