Little 59n - DC resistance and resonant peak when split

[Thomas_Desch]

First post for me in 2013, so happy new year to all of you.

The Duncan website only shows DC resistance and resonant peak for both coils together. Does anyone have the data for this pickup split? Or is there a formula to calculate it? (Divide DC res by 2, multiply resonant peak by 2 ?)

From the Duncan site:

Little '59

Model: SL59-1

DC Resistance: Neck: 9.86 k

Resonant Peak: Neck: 5.8 KHz

EQ: 7 / 5 / 6 (Treb / Mid / Bass)

 

[Lewguitar]

Re: Little 59n - DC resistance and resonant peak when split

Assuming the coils are matched, each coil should be approx. 4.93K.

Can't help with the resonant peak.

 

[Thomas_Desch]

Re: Little 59n - DC resistance and resonant peak when split

Thanks, Lew.

 

[freefrog]

Re: Little 59n - DC resistance and resonant peak when split

Divide DC res by 2, multiply resonant peak by 2 ?

None.
Resonant peaks depend on inductance, which is not always related to DC resistance. Even if you know the total inductance of a pickup (it should be something like 5.5 Henry for a little 59 according to the Rz provided), you can't simply divide it by 2 if you want the inductance of a single coil because humbuckers create "mutual inductance"...
Furthermore, the resonant peak must be calculated thx to a complex formula : 1 / pi x 2 x square root of (inductance x capacitance).
Once all these parms considered, I estimate the inductance of a splitted lil'59n as being somewhere between 2.4 and 2.5 H. It should give a resonant peak of approximatively 8.5khz.
I humbly recognize that it's pure speculation.

 

[Thomas_Desch]

Re: Little 59n - DC resistance and resonant peak when split

Thanks, freefrog.

When I suggested the factor of 2, I had a feeling that was rather on the optimistic side hehe.

I don't know enough electronics to get my head around your explanation. The data are not that important to me, but it would just be cool to be able compare the data of a split humbucker and a true single coil.

 

[freefrog]

Re: Little 59n - DC resistance and resonant peak when split

Thanks, freefrog.

You're welcome.

When I suggested the factor of 2, I had a feeling that was rather on the optimistic side hehe.

I don't know enough electronics to get my head around your explanation. The data are not that important to me, but it would just be cool to be able compare the data of a split humbucker and a true single coil.

Well, anyway, my explanations full of numbers weren't supposed to replace your ears: try to split the pickup and decide if you like it or not, it's definitively the best method. !-))

I say that because the resonant frequency is only one of the parms which make the "voice" of a mag pickup: there's many other factors to take in account (the "Q factor" among others).

If I can simply suggest something: don't hesitate to wire a pickup in parallel if you don't like it splitted. Parallel wiring is totally able to give a convincing single coil tone in some cases.

Another interesting trick is to wire a "dummy coil" in parallel with the humbucker.

 

[Thomas_Desch]

Re: Little 59n - DC resistance and resonant peak when split

I have tried it as a matter of fact, and I did like it, but it would be kind of neat or convenient to relate that sound to a set of data. But that would be too easy, wouldn't it? Haha.

I can say that much though, that the sound is quite "jangly". It definitely sounds like a single coil, but not your typical strat single coil. If anything, it actually reminds me of a tele neck pickup. Smooth and pleasant.

Anyway, I sent an email to Duncan Support for fun. If they come up with some hard facts, I'll post them here.