Есть классное интервью с Cesar Diaz - техником SRV по усилкам
http://www.tonequest.com/pdf_pubs/samples/TQRDiaz.pdf (1.7 Мб)
Так как раз говорится про датчики и вообще звук в т.ч. и Хендрикса, который использовал "post CBS guitars with the big headstocks" - так что датчики 54 года не покатят

TQR: Why?
Because of the way they were set up, and because of the
pickups. They didn’t say, “Lets put the weakest one in the
neck position, the next weakest one in the middle, and the
strongest pickup on the bridge.” They didn’t realize things
like that until much later on. A few years ago, I visited the
Custom Shop and I met Abagail Ybarra , the lady who had
been winding the Strat pickups in the 60’s. I had done a lot of
rewinding and testing of the Stratocaster pickups from that
era, because my whole thing was, “How did Jimi Hendrix get
his tone?” That’s how I got anywhere – helping people get
that tone, and it was definitely Stevie Ray’s thing, getting
Jimi’s tone. Anyway, spending all of that time examining and
testing those pickups when I was young and had the time, I
realized that all of the pickups from that era were about 200
turns off, and the resistance was much lower. And I began to
put this together – why was Hendrix only using the post CBS guitars
with the big headstocks? You’ll see very few pictures of him playing a
pre CBS Strat, even though Jimi had access to any guitar that was
ever made – Les Paul Standards, all of the Strats, Broadcasters – all
of that stuff was around to be given to him for free. Why did he choose
to only use Stratocasters from that period? To begin with, the
bigger headstock gives you more sustain, because the more
meat you have on the neck, the more sustain you’re going to
get. But also, the least amount of gain you have coming out
of the pickups, the better it’s going to sound when you run
through a fuzzbox or any kind of gain device. Obviously,
Jimi wasn’t a very scientific guy – he just did it because it
sounded good, but in any case, that’s what he chose to do for
a specific reason. When I was at the Fender Custom Shop, I
asked Abigail Ybarra if the winding machine was off in the
counter. Her eyes got huge and she said, “How do you know
that?” I said, “Well, I’ve taken a lot of pickups apart and I
know that you wound them by turns, and I’ve seen published
figures that so many turns equalled so much resistance.”
Personally, I’ve never gone strictly by the number of turns,
I’ve always checked the resistance. No matter what my
counter would say, I’d always test the resistance when it
looked like the coil was getting fat at certain points. I’d set it
up so that the neck pickup would be about 5.5K or 5.75K,
and go only up to 6.0K ohms – any more than that and you’re
just going to get mud. I know that because I’ve had hundreds
of pickups go through my hands.
TQR: So to sum it up, the Strat pickups of the mid to late
60’s were of lower resistance – weaker – and
because of that they sounded better when combined
with certain gain-boosting effects…
Yeah, it made them clearer and more appropriate for being
used with a lot of different effects.