I have a pair of 166's I bought while stationed in Japan in 1977 with the USMC. I reconed the speakers about 10 years ago as the foam on the wofers had long since deteriorated. Always loved the sound of JBL. To me, its very realistic.
Reconing the speakers was a bit tedious but not overly difficult. I got some pretty good advice form the company I bought the new foams from. Don't exactly recall the name but it was a place in Rochester, NY. Think it was about $40 or so, but that was a while ago.
Every now and then I use some furniture oil on the cabinets which I think are walnut and I have the black egg crate grills: still pretty distinctive. I remember thinking about the orange but those never would have survived my wife's tastes. Even now I am pressured to 'get rid of those big, ugly boxes'......never would have made it with the orange fronts.
Not that it matters, but I remember paying about $400 for the set in 1977.... probably a month's pay at the time.And that was a military discounted price.
Only competiton at the time were Bose and mostly because there was no amp that could over power them.
