[panomaniac]

Have a look at these.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=320278225497&ssPageName=ADME:B:SS:US:1123

3 pairs of nice oval Isophone tweeters. Should be just the thing for an OB rig.  I'd get them myself, (hate not to) but already have a great pair of open back Grundig tweeters I love.  The open back stuff does not come up often. And Graham say the oval drivers don't beam as much as round ones.

I do not know the tweeters or the seller (he's in Germany) but it looks like a good deal to me. About $44US per pair.
 Worth looking at, anyway. =)

[Graham Maynard]

Hi Michael,

Looks like the backs of the ones with lighter coloured cones are more genuinely 'open back' than the four with dark cones.

Cheers ...... Graham.

[Bemopti123]

They just got new owners.  Does anyone here know how to measure the specs or can recommend me a site for into and links?  Thanks!

PS: I just wonder what is the sensitivity and the frequency of these goodies.

[panomaniac]

Good for you!

There are some freewares out there that will measure what you need.  All you should really care about is the FR and the impedance curve. They are probably in the mids 90s for spl.  I use the Dayton WT3 to measure impedance.

Otherwise, just work by ear!  Just a cap and a resistor is all you need.

[scorpion]

I just bought these SABA Greencones to have two pairs of a bit different date: http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=250270586854 . I already have a pair of 8" and a pair of 16 x 9"  Greencones to match with and soon to be ordered Tone Tubby 8" ceramics.
It might pay to go to Ebay in Germany to get more of those Vintage drivers on sale: http://m6n.ebay.de/Audio-Hi-Fi__W0QQ_sacatZ10614?_trksid=p3907.m21 .
Just try to search for what you are interested in, like SABA, Greencone, Isophone, Grundig etc.

/Erling

[scorpion]

I forgot to give this essential link: http://www.german-vintage-loudspeakers.com/navid.1/home.htm . 

/Erling

[panomaniac]

There's a nice set on eBay that went up today.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=120294461335

Vintage Grundig oval midrange and oval tweeters.  Should make the heart of a damn fine OB system.  I'm temtped to snag them myself!   Just ad woofer and you should be in OB heaven.