It may be possible to fix the Linton IIIXP's, but they weren't too hot when new and are pretty grim today IMO. You might tap up HiFi dave, who has a boxed pair intended for "test" functions. he may be willing to let them go...
Can I just say that griffin's had a definite sonic "flavour." very damped and "dry" in presentation as I recall, with a "pinched" quality I remember. Thirty years on, they may well perform differently on modern gear.
I'd look out for some original Mission 700's (even if you have to re-foam or replace the bass units...). They were so good with elderly equipment and not bad with better stuff too and they didn't "bite" like HB1's used to.
I can't go on and I can't go back, I don't feel so matter of fact,
I tried and tried to make good sense, What's the good to try it all again?