|Multi-Way Conventional loudspeakers with crossovers|
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|18th December 2004, 07:20 AM||#1|
"Different" Jensen woofers.
A couple years back I bought some strange Jensen 10" woofers,just because they were "different" and were cheap.
I think they are Jensen "3P" 10" woofers.
They are different because they use a flat (coated?) styrofoam cone (Piston),they almost look like a passive radiator,but have a fairly large magnet structure(and,of course,voice coil) on the back.They are only maybe ~4 inches deep.
I forget exactly what they say on the rear (they aren't here at the moment.)..
" Poly Piston ___ "
something along those lines.
Has anyone ever seen these? Perhaps someone has some info on them? Any ideas for a tweeter to match,x-over points,etc?
They should make an interesting project.
|16th November 2006, 03:28 PM||#3|
After a long time,I ran across these speakers again in my junk pile..
Here's some Pic's.
Anyone ever seen these before?
|4th November 2008, 05:14 AM||#5|
Digging up an olllddd thread
So,I finally found my papers with some test measurements on these speakers.
From Speaker Workshop:
Vas 2.129 CuFt
Le: 1.541 mH
L1: 0.239 mH
Re (DCR) 5.561 ohms
Xmax: 0.394 in
Sealed box volume 1.060 Cu Ft
Added Mass 0.035 Oz
I also have Impedance/Phase plots that I will try to scan.
Ohh,and the pics are now also on my photobucket site
Some interesting looking speakers,in any case. Still not sure what to do with them. Any thoughts?
|6th November 2008, 02:10 PM||#7|
diyAudio Member RIP
Join Date: Nov 2003
Location: Brighton UK
Sealed box or much larger but goes deeper TL or MLTL.
Must be used in a 3-way I would say, likely very dodgy midrange.
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