split coil flatwork dimension

[murof]

hello,

someone know exact pole distance of precision bass split coil?.... i would make hole in flatwork with cnc router

thanks
bye

[GlennW]

I have a book which says .375" on center.

[murof]

thanks

[murof]

how many turns about per coil? 10000 is it right?

[David Schwab]

how many turns about per coil? 10000 is it right?

5,000 per coil.

I still have a '72 P bass bobbin around here somewhere...I've been trying to locate it... but looking at a DiMarzio P clone I have here I read 0.383" (9.73mm) between poles. Get a set of covers and use those as a guide.

[GlennW]

I'm thinking about rewinding one and have decided to go with 10.56K total, or 5.28K per coil when I get around to it. I've seen that spec in a couple of reliable places. I have no idea how many turns it is. Good sounding split-P pickups are hard to find.

[David Schwab]

I don't know how many turns exactly either, but they are usually about 10K total resistance.

There's a lot of opinions on what a P bass is supposed to sound like. The one I object to mostly is that they have a really thick dark tone.. because they don't at all.

But people think of Motown, and forget the part about old dead LaBella flats, high action, and a big chuck-o-foam under the strings to make them super dead. And probably the tone all the way off too.

Chuck Rainey used dead roundwounds, and the tone all the way off. Those are two of the people that made me want to play bass. Another being Sir Paul. And Carol Kaye... more flats and foam.. but this time with a pick. (I used to use her picks back in the day, and she gave me a bunch more recently )

To me they always sounded round and a bit on the hollow side with flats... assuming you have the treble turned up. They also get a bit farty if you hit the strings hard. With roundwounds they were quite bright, but not in the Ric or Jazz type of way. I think three great examples are John Wetton with King Crimson, Ray Shulman with Gentle Giant, and of course Steve Harris, who got a really bright tone with flats.

Young players these days hear old recordings, and forget the part about the dead strings, the (sometimes awful) amps, and whatever else that got that tone. You can get a lot of tones from a P bass.

[mick]

Hmm , I thought it was 10,000 per coil? it's a very small coil..

Mick

[GlennW]

Here's something that says 10,000 turns for the P...doesn't specify if that one or both coils though. It has other info too.

http://www.provide.net/~cfh/pickups.html

It seems like they're very touchy as far as how much wire. It's like less than 10K sounds too thin and over 11K is too bassy. That's just by what I've seen/heard.

[David Schwab]

You can't get 10,000 turns on that coil! It's small and shallow.

Duncan has the vintage P bass pickup, model SPB-1, which he says is:

"A faithful reproduction of Leo Fender's 1957 dual coil pickup design. Same hand-fabricated forbon bobbins. Same plain enamel wire. Same hand ground, sand-cast magnets. Same great "warm 'n woody" tone. Comes with waxed cloth hookup cable and non-logo covers."

It's total resistance (both coils in series) is 11.6K.

Think what the resistance of 20,000 turns would be. You'd be in Gibson mudbucker territory.

[mkat]

You can't get 10,000 turns on that coil! It's small and shallow.

You know, for a while I thought it was 5000 per coil but I'm not so sure now. It's shallow, but wide and slightly longer than half a jbass neck bobbin. I made two pbass bobbins a while ago but haven't wound them yet. I think I'll wind them this week, the only way to know for sure...

Hmm , I thought it was 10,000 per coil? it's a very small coil..

Looking at the size of jbass and pbass bobbins, it kind of looks like 10 000 may fit.

[GlennW]

Duncan has the vintage P bass pickup, model SPB-1, which he says is:

"A faithful reproduction of Leo Fender's 1957 dual coil pickup design. Same hand-fabricated forbon bobbins.

My P-bass has a SPB-1 in it now, with a Dano RI lipstick by the neck. I don't really know what the P-bass sound is...a lot of variation. The SPD-1 is my fav out of the 10 or so I've tried, but just seems too bassy...not the the aggressive in-your-face bassy like the SPB-2, but bassy enough where I'll try rewinding one.

I need to make a surround for the Dano...there's a piece of tolex taped there now so I could see how it would look.

[David Schwab]

You know, for a while I thought it was 5000 per coil but I'm not so sure now. It's shallow, but wide and slightly longer than half a jbass neck bobbin. I made two pbass bobbins a while ago but haven't wound them yet. I think I'll wind them this week, the only way to know for sure...

Looking at the size of jbass and pbass bobbins, it kind of looks like 10 000 may fit.

10,000 turns on that bobbin will not read 5.8K. That's how you know its not 10,000 turns.

I've unwound a '72 P bass pickup, and then put 1000 turns back on it. There was not a lot of wire left over. I had a second stock unit but I sold it a few years back.

The DiMarzio Model P is only 11.3K, so it doesn't have much more than the Duncan version (if not less) wire on it. It has a slightly taller bobbin as well.

A 20K P bass pickup would sound like mud.

[mick]

Just found my notes from a rewind I did last year on an early 60's one , 10,200 with HF gave me 5.4k , it was reasonably warm here at the time I seem to recall . so I think that maybe 10,000 is around the correct figure and will indeed fit on one of those bobbins .
I have a rewind on an early 70's one that will be done today or tomorrow with PE , so I'll post some findings this week...


Mick

[mkat]

10,000 turns on that bobbin will not read 5.8K. That's how you know its not 10,000 turns.

Yeah, well, I don't know, it just seems to me that 10 000 turns will not read close to the vicinity of 10K or so either on a pbass bobbin. Anyway, looking forward to Mick's results unless I get to wind mine earlier.