hnash53.....I don't know if you ever see or might come across any Isophon/Telefunken(Noresco,Canadian) 12 in Ovals out on the coast,but they might be suitable for what you are asking about,depending,on your Music/volume preferences?
I hung on to my Alnico version pr.,and just now pulled them,and see they have a sticker on them,these were made/distributed(assembled into cabs) here in Canada under 'Noresco brand'.
I'm near certain they're identical to model Isophon ph2135,(check number please)and the reason I mention it,is they may in fact may be 'much cheaper' to you if you can find any under the Noresco name,mine I'm pretty sure are 8 ohm version,earliest Isophon version of them first came out in 16 ohm(I think?)
I remember turning up a friends Dad stereo(when he wasn't Home,haha),and it was for sure a near new Noresco ,which consisted of a turntable mounted on top of a solid state Integrated amplifier,(all original),and branded Noresco,and the speaker cabs were identical size,and also same real veneer Walnut,so its highly likley,same as my pair.
The above mentioned Noresco,were located out West in Vancouver(Canada),when I was a teen.
The TT was a Dual,and was attached,came with the unit.
The above Isophon/Noresco's I mention sound somewhat colored,but in my opinion really great with tubes,or low watt SS.
....I own above Coax version,with single cap,tweeters are alnico, with closed in back,& sounded 'Exceptional' for vintage,in my opinion!
And ...I only paid $10.00pr,minty Walnut cabs,so price was right.
Later,paid like $2.35 for 2 new caps,and it was like a night/day improvement,cheapest 'tweak' I've ever tried!
..I still don't want to give them up,as years ago scooped a 3-way Telefunken console pull,6 inch mids that Sound Absolutely Amazing,but was odd that their matched Telefunken tweeters sounded only so-so,and as far as I'm concerned the Isophon tweeters Totally blew them away,but hey was a 60's console,please keep that fact in mind,and would you want somebody else's tweeters to sound better than yours,so kinda makes sense in that respect,if Isophon made the drivers....
At the time was told woofers were made by Isofon,and are also 12 in Ovals,so this time,I want to mount one 12 Oval vertically,with 6 in Tele mid,then 12 in Tele oval woofer below,or just Dual 12's Coax on top,I'll try card board mock up,might use Mini dsp,and bi-amp..oh,oh,another retirement project!...O.M.G!
I ended up selling their Pine diy baffles,,and keeping above components..
I especially liked their sound using the Loudness(properly modded) switch on my re-capped Eico ST-70,(tube integrated)which gave sweet Phat bass,but you really have to 'watch your Volume',because,you could blow them,they supposedly sounded good in an apeirotic,box(aka Dynaco A-25)and with rear backs removed off speaker box cabs they came in.
Pretty sure I have participated in an AK thread,regarding above co-axials,years ago,another member mounted 1 per baffle vertically in an absolutely massive Wide/Tall OB plywood baffle,think it was like 5 ft across,so HUGE!....I think the bass was good,so may be worth pursuing....or not?.
I'm not a fan of Loudness switches,at all,consider them 'Distortion generators'....but for some reason the Eico sounded exceptionally good engaged at lower Listening levels,Jazz,so it suited lower listening nicely in my opinion.
EP Concert Kenny,tonight's movie/concert...Grand Theft Parsons,and 'Return to Sin City'....a Tribute to Gram Parsons...