Electronics > Projects, Designs, and Technical Stuff
Electric guitar pickup - without permanent magnets: Core material, etc
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Benta:

--- Quote from: SiliconWizard on June 06, 2019, 03:33:00 pm ---Just a thought, but replacing permanent magnets with an equivalent static magnetic field generated by some coil would draw a significant amount of power. That may not be very practical unless you're ready to use a big battery.

--- End quote ---

Yes, of course. In the end, the guitar will either be heavy or need extra cables for power. Don't underestimate the permanent magnets in passive pickups, they're good.

Concerning sustain/decay control on guitars:
A good guitarist does this with the heel of his hand just above the bridge. No need for magnetics at all.

TinkeringSteve:

--- Quote from: Benta on June 06, 2019, 07:08:33 pm ---Concerning sustain/decay control on guitars:
A good guitarist does this with the heel of his hand just above the bridge. No need for magnetics at all.

--- End quote ---

Which is why Steve Vai has a built-in "e-bow" style sustainer in at least one of his JEMs, because the dude is a total noob.
[/troll]

Anyway, some interesting input here, will have to digest all when I've got a quiet hour or two.

As for "active pickup doesn't lie" - that's not really what it's about with E-guitars, though, is it.
Pickup, cable, amp, speaker are all part of the electro-mechanical modelling of the resonant guitar body that the typical e-guitar lacks, to give it character. Which is why people like to experiment with different pickups and other things. I have measured a couple, they tend to have different resonant frequencies (in the system, with same assembled capacitor in the guitar, and same external cable). Especially with lots of distortion afterwards, they can sound drastically different.

I understand the benefits of on-board buffers and such. It's one of the several possible routes to go. I think UJR also has controls to shift the resonance, before it's buffered - and then there's the buffer and his cable won't alter the sound by loading the whole thing.
Electro Detective:
Folks, if you like a bit of over the top sustain, here's an electric guitar maestro showing it done the old school way:

i.e. full control of the guitar and amp volumes, awesome chops  :o
with no pretense, hype, miles of pedals wasting stage real estate, or silly shaped axe required

Hope you like it   :-+

Three piece band:
youtube.com/watch?v=vkUpfw4Hf3w

same tune with band and orchestra:
youtube.com/watch?v=DR8JAFpiTdc

TinkeringSteve:
I like Gary Moore. Especially his playing in Colosseum II.
Ah, there's even a recording... but why is the singer not on that gig... ah I remember, one of the wives, or was it of the producer, found him "too flamboyant" and nagged them to let him go or something  :palm: He was pretty good.


I don't much like the feedback for sustain trick, though. The kind of tone you could get with that seems to be limited. Seems like a gimmick for certain situations. Feel free to correct me if I'm off, I've only tried that at bedroom sound levels sitting in front of the amp with cranked pre-gain, and as the tone is, to a big extent, produced by your air coupled feedback circuit, it seems to add a certain tonal quality that's not otherwise present...

Not nearly as insane a shredder as Vai, though. (who doesn't have that big of a pedal board, IIRC).
Or UJR. Watch the 1977 "sails of charon" video, where he basically invented shredding, and doesn't even look at his guitar while doing so :D
(this integrated player ignores my timestamp: forward to 01:07 past the babbling)


The "silly shaped axe" comment is just, eh, silly, though. If that was addressing Uli JR - watch the video in the OP. It's not just a shape, he can play notes in the upper violin range, Gary Moore could have only dreamt of.
If you see the above vid - apparently a strat will do just fine for him, if he playes notes in the regular range only ;)

Good reminder to listen to some Gary Moore / Colosseum II again, though!
Electro Detective:
Shredders and speed kings have been around for a while, Ritchie Blackmore, Alvin Lee and others were hard to beat in their day,
and refreshing alternatives to the Hendrix and Clapton duopoly  ;D

btw Randy Bachman in the Guess Who pulled some great sustain tones in the original 'American Woman' tune   

There's a lot you can do with a decent neck pickup in a block of good resonant wood, and playing technique, without relying on subtle amp feedback

fwiw there are parts where Gary Moore doesn't need the amp to assist in note torture  >:D



--- Quote from: TinkeringSteve on June 08, 2019, 10:42:27 am ---I like Gary Moore. Especially his playing in Colosseum II.
Ah, there's even a recording...

but why is the singer not on that gig...

ah I remember, one of the wives, or was it of the producer, found him "too flamboyant" and nagged them to let him go or something  :palm: He was pretty good.


--- End quote ---

Many good bands 'died' that way, someone 'said' something or bonked someone they shouldn't have,
homophobic issues (flamboyancy) 

or the best way to see the exit door are silly immature questions like 'but Dude, where's our money from the last tour..?'  :horse:

 ;D

 
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