Self measured T/S

[bhg41088]

I want to measure the T/S parameters of some drivers i have sitting around, and also the frequency responce. I need to know how to do this. Any sites you guys can link me too?

[BlackDog]

try

http://sound.westhost.com/tsp.htm

or Google for "measure Thiele-Small"


Steve

[Rimband]

Hello bhg41088, you may want to try this URL;

http://www.mhsoft.nl/default1.asp

If you have an accurate audio generator and AC millivoltmeter, you may be in luck. Hope this helps!

[bhg41088]

i dont have any of that stuff, guess im SOL.

[BlackDog]

You can use your PC's soundcard as a Audio generator.
There is plenty of free software around on the Net to generate the signals you need for T/S measurements. AFAIK WinISD is one.

A decent digital multimeter is all you need to take measurements. A $50 one would be pretty good, and useful many other tasks as well!l

[B.VDBOS]

Try Speaker workshop, It mesures just about everything and you only need a P.C with a soundcard.
Its a bit tricky to set up and callabrate but once done its a very useful tool

[bhg41088]

well, it seems this would help me alot as i have alot of "mstery" drivers laying around. How much would the equipment cost? I want to use my computer for part of it. So what do i need, and what can be had for not too much. i need an Oscope i think. Can i use my home reciever as the "amp?"

[SY]

All you need is Speaker Workshop (free), a computer with a decent soundcard (which you probably have, but if not, a nice card can be gotten for $50), and a measurement jig like Eric Wallin's (about $20). You'll also need some sort of amp- your receiver would probably work, but you can even lash together a dedicated unit (you only need a few watts) with an LM1875 and a few Radio Shack parts for $30 or so.

That's it.

[bhg41088]

measurement jig?

[Bill Fitzpatrick]

Originally posted by bhg41088
measurement jig?

http://www.gti.net/wallin/audio/jig2/jig2.html