seth seems more noisey than my other hummers

[the guy who invented fire]

Re: seth seems more noisey than my other hummers

I LOVE a noisy hummer.

LOL!!!

[jmcorey]

Re: seth seems more noisey than my other hummers

Now you mention it I think I may have noticed this. Can anyone say why this would be the case? Or are we imagining it?

Seths are more microphonic than potted pickups. If you tap the pickup with your finger you hear the tap louder through the amp than you do with a potted one. Still love 'em though!

Fom a post by Bill Lawrence on another site: "The Alnico magnets under the coils of a traditional humbucker cause, due to their permeability, an imbalance of the humbucking effect resulting in some hum."

[Marcel]

Re: seth seems more noisey than my other hummers

in my experience, humbuckers with alnico 2s are a little noisy. alnico Vs are a little bit quieter and those with ceramics are the quietest

I remember a thread someone changes the magnets on a custom (5) and got
more noise.

"The Alnico magnets under the coils of a traditional humbucker cause, due to their permeability, an imbalance of the humbucking effect resulting in some hum."

i have to think about this a bit,
But that was what i thought first: it has to do something with the permeability.
Its a function of the outer magnetc field in ferromagneticas?!

[Marcel]

Re: seth seems more noisey than my other hummers

I think i've got a theory about this. If someone's interested?
I just have to know if this is right:
Ceramic magnets are "harder" (magnetically) than Alnico?!
Can somone verify this?

[bryvincent]

Re: seth seems more noisey than my other hummers

alnicos are made of metal, ceramics are not

[Archer_of_Fish]

Re: seth seems more noisey than my other hummers

A2 being more noisy than A5 ??!

I wont believe it until someone shows up with a SCIENTIFIC explanation. Sorry.

I don't buy it either. It doesnt seem logical.

[Biu]

Re: seth seems more noisey than my other hummers

Awww, does that mean Seths aren't good for hi-gain due to noise?

[bryvincent]

Re: seth seems more noisey than my other hummers

I don't buy it either. It doesnt seem logical.

it is more noticable on electrically noisy environment.a2s are only slightly noisier than the a5s. but both are very noticeably noisier than HBs with ceramics. try it yourself, put an a2 HB in one position and a ceramic HB on the other, the diff. in noise levels is very obvious when you flick the switch. it seems the weaker the magnet the noisier the pickup

[Marcel]

Re: seth seems more noisey than my other hummers

ok i'll try to explain: why weaker magnets hum more then stronger
But it's just my theory

The noise from the windings is cancelled in first order of the humbucking effect. But if you have an electromagnetical field E (electrical field) and
H (magnetically) field are changning with time.
The changing of H causes a changing of B:
B=µ0 (H + M)
The changing of B causes a "voltage":
U = - d/dt (int_A B * dA) ~ A * d/dt B *edit* I think this is called Faraday's Law
But now the interesting part: the Magnetization M changes when the outer magnetfield changes. You can see this in the hysteris curve.
On "harder" magnets the hystersis is "flatter" at the region where H ~ 0.
What i mean M changes less when H changes less on "harder" magnets
=> B changes less => U changes less.
That means the voltage which causes the hum is less => less hum on harder magnets.

At the bottom you see the Magnetization M as a function of the Magntical Field H:
The Area in the curve is bigger the strong or harder (dunno how it's called) the magnet is. On very strong magnets it is like a square. That means the magnetization nearly
change in a magneticfield. On "softer" or wekaer magnets the curve is more round.
The magnetization does change in a magnetfield.

To sum it up: the Alnico 2 is softer than Alnico 5 and the Magnetization
changes more in a electromagnetical field which implicates a higher voltage which is inducated.

Sorry for my bad english! It's just a theory. You need the datas of the magnets to prove this....
Hope somebody understand a little bit...

[bryvincent]

Re: seth seems more noisey than my other hummers

Awww, does that mean Seths aren't good for hi-gain due to noise?

that's why slash always has a hush noise reduction in his set-ups.