P Bass wiring 1 V 1 T with series parallel and phase

[markuser]

Is there a diagram for the P bass around where the Vol and Tone have DPDT push pulls controlling Phase and series/parallel? The P bass has a humbucking pickup design, is phase switching possible with itself? can it be split? Where is the gram?

I want a few more sounds out of my trusty P.

[Deleted]

Hmm series or parallel I'd say.
As one pickup does 2 strings and the other does the other 2 strings.
X+ to output
X- to common A
Y+ to common B
Y- to Ground

Up A to Ground
Down A to Down B
Up B to Output

Series and parallel for a P-Bass

[markuser]

Would that be rewarding? Would I actually have extra sounds?

Dare I ask if a split would be possible? Like cut the strings for a low cut or high cut.

Angle bunny I like how you put words too the picture. I just see a mess, a picture, and i trust it works.

[thetragichero]

phase switch shouldn't make much of a difference, sounds like a waste of a switch/pot. the pickup is split EA and
DG so little to no interaction between the two coils
I've heard of folks doing series/parallel. wouldn't definitely have a different sound (since it would be about 1/4 of the impedance). whether that sound is useful to what you may play or not is another thing

"split" or "coil cut" would be fine.... as long as you only want to play on two strings

[newey]

phase switch shouldn't make much of a difference, sounds like a waste of a switch/pot. the pickup is split EA and
DG so little to no interaction between the two coils

Hmm. I wonder.

I don't recall ever hearing anyone trying this, so we're speculating a bit, but the split between the strings is not a precise split, as the magnetic window is imprecisely "focused" on just two strings- there will be some overlap. Playing technique may also have an impact, as more string excursion would result the "other" coil getting a bit of signal, I would think. A slap-bass technique might get some interesting tones.

Mind you, I'm just spitballin' here. But it might be worth a try.

We often note that OOP sounds are more useful when there is less cancellation of signals- N + (-B) on a Strat sounds better than N + (-M), for example. The same might be true between coils that are physically next to each other, but inducing signal from different strings.

Not sure there is any way to realistically model such a wiring, so maybe we need someone to step up and be the proverbial guinea pig.

[markuser]

Aug 27, 2019 15:32:05 GMT -5 thetragichero said:

as long as you only want to play on two strings

Nahh ... um really? It won't sound the other two strings at all? Yikes, that is a cut. The strings prox should be close enough for something of a signal.

Come on , I am sure somebody threw a phase and a split/series /parallel on a 'P'. Out of habit, or boredom.

[thetragichero]

take your pick



EA or DG?

[Deleted]

Basically it's one pickup split over two levels.

Phase I did think only work with two pickups on the same string ..
So could do this with PP bass or J Bass even musicman humbucker bass but I think the P-Bass on its own, no.

So parallel and series , I don't know what the sound will do .. but I don't think it will do anything bad so why not.





If looking for things to do and try.. have a look at this.

Dolganoff Megatone i am a FAN of his as he is trying different things
tho its a kinda replacement for a Normal Tone Pot 
Google can Translate most of it if dont understand french

[sumgai]

Today's Nut(z)Shell Theory:


In point of fact, "phase inversion (or reversal)" is dependent on the signal formed in two coils, but derived from one source - in this case, a vibrating string. Phase inversion between two pups that are not being excited by the same string is a non-starter. QED. (Focused fields have a drop-off ratio of the fourth power, hence any imagined overlap will be non-noticible outside of a laboratory.)


Parallel vs. Series. Different story here.

In a series relationship, the impedances will add (just like resistors), and the overall effect on tone will be to reduce the highs and emphasize the lows/mids. In a parallel lash-up, the opposite is true. When Leo first let the Telecaster Bass escape his factory, he put the pickups in series in order that the bass not be so piercing as to compete with the lead instruments. Not to mention, in those days, there were very few amplifiers/speaker boxes that could easily recreate the lower frequencies, so any help he could give them was a bonus... in his mind.

Times do change, eh?  At least, according to Bob Dylan they do.

sumgai

[JohnH]

I think that the series/parallel switch might make a really big change for the brighter, though at the cost of lower volume in parallel mode. If you take a look at some of the p-bass test results from Antigua, they tend to have considerable inductance, hence bringing their resonant peak quite low in frequency when feeding through a normal cable. Parallel wiring quarters the inductance, for a relatively larger, higher-frequency peak.

Another thing that I'd definately try if I had a bass, would be a built-in buffer or buffered cable. These simple active circuits work very well with very few parts. They extend the top end, and despite the low fundamentals of a bass, I think the high treble can be even more important on a bass even than on a guitar.

[sumgai]

John,


I think we're getting a bit mixed up here - the inductance of a coil (in ancient times, it was called an inductor) is fairly immutable. However, the inductive reactance is what changes with frequency... and that leads to impedance being the deciding factor in calculating the effect of a either a cap or a coil on what frequencies will be heard at the output.

(For those who just tuned in, we can simplify the term Impedance to mean that it is essentially nothing more than resistance to an AC signal.  Both are shown in units of Ohms.  Of course there's more to it, a lot more, but for us guitar modders, that's it in a nutshell.)

---

All,

Impedance is calculated as a product of frequency, DC resistance and inductive reactance. (Ditto for capacitors, but substitute capacitive reactance.) There are many, many websites out there with lots of info, some simple enough for the lay person, others that go way beyond a PHd-level thesis.  As you go searching aboot, try not to get bogged down with those latter sites.

But yes, the impedance of one inductor will be doubled if another similarly-valued inductor is placed in series with it, and the overall impedance of two similar inductors in parallel will be half of the value of one inductor... or a quarter of the total in our series example.  Knowing this, we can extrapolate that a series circuit will present a higher impedance to the following circuit (amp, pedal, etc.).  But sadly for us as guitar players, is the fact that the cable's capacitive impedance will work with that higher inductive impedance to suppress the higher frequencies..  And of course, the opposite is true for a parallel setup, the higher frequencies won't be so severly depressed, so the signal will seem more pronounced, by comparison.

And for what it's worth, the overall volume level of two pups, as measured on laboratry instruments, will be less than one-half of decibel different between them.  Not so easily demonstrated, unless one's workbench is populated with test equipment costing more than one's automobile.  Remember, if the highs are missing, and you think the mids/lows have been emphasized by comparison, then your ears are (and in truth, your brain is) compensating for that differentiation.  Since no two people hear the same thing in exactly the same way, it's a bit of a stretch to 'assume' that everyone gets the same results. (i.e. the old saw that goes "Series is louder".)  I know I don't think that series is louder... in fact I think it's only "more muddy" because the highs are missing, which leads me to believe that there's no clarity, something I consider important in a sound/tone.

But that's just me.  As usual, YMMV.

Final note: If you're really worried aboot your Mojo Tone, then you'll understand why ChrisK and I have always said that the best cable is made out of RF.  In other words, ditch the wire-and-rubber and get a radio!  Your ears will thank you.  Not to mention, there goes absolutely all of the hum you ever suffered - all of it!

That's my morning dump!

HTH

sumgai

[markuser]

Electricity is a lie. Totally.

The powerline's are too big and long. The resistance is too great, it adds up from the length and girth. They could force it through if they could make infinite station power, then the material would melt and fail. The lines stretch too far, that's mega resistance at a quantum level.

The power comes from me. I got the power. The magic of the music in me..

Haha

[thetragichero]

i don't think we have a schematic for that

[reTrEaD]

Aug 29, 2019 16:00:34 GMT -5 markuser said:

Electricity is a lie. Totally.

The powerline's are too big and long. The resistance is too great, it adds up from the length and girth. They could force it through if they could make infinite station power, then the material would melt and fail. The lines stretch too far, that's mega resistance at a quantum level.

The power comes from me. I got the power. The magic of the music in me..

Haha

Thank you, Benji

[markuser]

If not for transferring power then what...

My guess is the lines divide the gang territories , and determine maximum building height.

Telephones are totally real though.

[Deleted]

Passive, i was working on a Active one that changes but working with a power supply 
was thinking maybe a CUT out on the guitar that has a Battery Pod that clicks in hmmm every thing has wear and tear
I do have a CRAZY Active Bass circuit but i dont think would fit in a Jazz Guitar Hole more P-Bass with Jazz Pickup