Speaker

I have a 4ohms speaker with 4'' dual cone. its from kingwood KW-401. I just want to find out the B(magnatic field), L(inductance), b(damping cofficient), M(effective mass of air).


I am looking for any speaker not nessary this one

Anyone can tell me the spec of a speaker because i search the net the never mention about B, L, b, M.

Help needed

Small dual cone speakers are very cheap and usually do not have any spec's.

Speaker spec's have Thiele-small parameters listed but use different letters that you do.

This website lists the parameters of over 4000 speakers:
The Thiele-Small Loudspeaker Database