FS: University 6201 12" coaxial drivers

[JoshK]

They are matching makes. I'll verify but I believe the S/N's are consecutive. As far as T/S, I just got WT3 and haven't tried it yet. It might take a little bit before I get a chance.

When I bought them I wasn't given any such info. The Alnico demag issue though is overstated in general. If they were used for pro audio use, which it is unlikely these were, then the chance of such is not very likely.

 

[badman]

I've seen drivers with and without the demag issue. It's something you need to be sure of, via testing. I can only imagine how many people have mismatched speakers due to one having seen demagging and one not.

Fortunately, the WT3 is easy to use, see my review here:

http://www.enjoythemusic.com/diy/1108/dayton_wt3.htm

So you should have no trouble determining whether they're lossy on strength. If the woofer Qts seems high, then they've probably taken a hit.

 

[JoshK]

Well this makes a perfect opportunity to try it out. Thanks for the info.

 

[JoshK]

Coax1:

* f(s)= 59.22 Hz
* R(e)= 7.50 Ohms
* Z(max)= 35.81 Ohms
* Q(ms)= 2.961
* Q(es)= 0.785
* Q(ts)= 0.620
* L(e)= 0.35 mH

Coax2:

* f(s)= 59.22 Hz
* R(e)= 7.84 Ohms
* Z(max)= 35.57 Ohms
* Q(ms)= 3.127
* Q(es)= 0.883
* Q(ts)= 0.689
* L(e)= 0.49 mH

Coax3:

* f(s)= 64.60 Hz
* R(e)= 7.63 Ohms
* Z(max)= 31.32 Ohms
* Q(ms)= 2.601
* Q(es)= 0.838
* Q(ts)= 0.634
* L(e)= 0.50 mH

Of course, with an adjustable Lpad, its possible that I didn't have them in the same spot on all three measurements.

 

[badman]

Those High QTs might work well for an open baffle setup, like the JE Labs style. Not enough motor strength for me though.

Thanks anyway Josh, and good luck selling them.

 

[JoshK]

If anyone has interest, email me and I'll post these on ebay with a buy-it-now option. Ebay and Microsoft are running a 40% cashback promotion with BIN auctions when paid with paypal. Its a really great deal. Today only (Dec 1).

P.S. you have to have a US IP address for this to work.

 

[UncleArt]

I know it's six months after the fact... but are these gone?

 

[theAnonymous1]

I know it's six months after the fact... but are these gone?

2 years, 1 month, 17 days..... to be exact.

 

[Midnightmayhem]

are these still around? I could use one or 3