Yeah, I guess I was hoping that someone would magically respond that these were commonplace and shared some drivers with x commonly available speaker. No such luck![]()
Well, the KEF Drivers used in Wiggy's ad post are actually fairly commonplace in the US and if not, you can still get them from England in the used market.
The woofer is the famous oval "racetrack" KEF B139 SP1044, used in many original KEF designs and a lot of other British makes.
The Midrange is the equally famous KEF B110 SP1003 Bextrene midrange and the Tweeter is the well known KEF T27 melinex dome.
the mid and tweeter are better known as the drivers in the BBC/Rogers/Spendor LS3/5a before 1987. Several KEF speakers from around 1968 through 1980 used various combinations of these drivers.
The Fried Model R sort of represents a KEF Concerto in driver complement but switching to a transmission line/pressure tunnel and of course a different crossover.
All of these drivers can be sourced used, and occasionally new in box if one is lucky. However, as Wiggy mentioned, they are many times desired for DIY LS3/5a's or similar so can be sometimes costly to acquire IF you have an expectation of "inexpensive or cheap". Things in demand tend to be more expensive, and of course, you must factor in shipping.
I've sourced plenty of these drivers over the years, and if you pick and choose carefully, you can get deals, or you just pay the price if your need is great.
Frankly, if you live in/near INDY and can pick these up, your competition for these speakers is limited by geography, time and effort primarily. I've heard these speakers and they are quite good, although inefficient. They do have a sort of British reserve to them but do go decently deep. And I think they have a pretty good resale value, whole or, god forbid, parted out.
So, IMO, don't be deterred too much by worrying about spare parts needs. Like many JBL speakers, there is a value/cost to owning such speakers, and one should consider that if you have a particular budget level in mind. Otherwise, these speakers are worth owing and / or restoring.
I've got a pair of cabinets and all the requisite parts to put them back together again at some point. Just need time.