Can you help me identify this Vintage Dividing Network?

[gunsforfun]

I found this vintage dividing network driving an Altec horn and a Jim Lansing 150-4 15". It has two spools. I have never seen one like it before. Please see the pictures attached. It works great. I bet Jim wound it himself. Please help me identify it. If you really like it, make me an offer. :) [email protected]

[glen]

Well the design and layout look very similar to these old Lansing Manufacturing dividing network designs:

http://www.lansingheritage.org/images/lmco/bulletins/7a.jpg

But the "inspected by" stamp might point to a bigger company.

[subwoof]

That looks exactly like a jensen xover I sold about 5 yrs ago. It was 500Hz and if I remember had similar stampings.

Back then home "hifi" large systems had different components from different manufacturers. The system I had used a partician sub, university mids and EV tweets.

sub

[Steve Schell]

Gunsforfun, I agree with subwoof that the network was made by Jensen. They also supplied other companies like I.P.C., so maybe that is why it is not labeled as a Jensen product. Anyway, the looks of yours is typical of the Jensen theatre system networks of the 1940s. Someone must have acquired it at some point and paired it up with the Altec horn and JBL woofer.

High quality passive networks like yours were used exclusively in the early theatre systems. They designed them for high (for the time) power handling, long term reliability, and low insertion loss. The Western Electric, RCA, Lansing and other top tier system networks used large air core coils and paper in oil capacitors. Most of these networks still work fine today after a 60 or 70 year "break in period."

[gunsforfun]

Thank you for the information! : ) :)